Author: "Porter, T.A." - Searchworks@Jio Institute Digital Library Search Results

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39 results on '"Porter, T.A."'

1. Inference of the Local Interstellar Spectra of Cosmic-Ray Nuclei Z ≤ 28 with the GALPROP–HELMOD Framework: Prediction Capability and Hints of Excesses

Author: Masi, Nicolo, primary, Masi, N., additional, Boschini, M. J., additional, DellaTorre, S., additional, Gervasi, M., additional, Grandi1, D., additional, Johannesson, G., additional, LaVacca, G., additional, Moskalenko, I.V., additional, Pensotti, S., additional, Porter, T.A., additional, Quadrani, L., additional, Rancoita, P.G., additional, Rozza, D., additional, and Tacconi, M., additional
Published: 2023
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2. The Fermi-LAT Light Curve Repository

Author: Abdollahi, S., Ajello, M., Baldini, L., Ballet, J., Bastieri, D., Gonzalez, J. Becerra, Bellazzini, R., Berretta, A., Bissaldi, E., Bonino, R., Brill, A., Bruel, P., Burns, E., Caputo, R., Caraveo, P.A., Cibrario, N., Ciprini, S., Orestano, P. Cristarella, Cutini, S., d'Ammando, F., de Gaetano, S., Digel, S.W., Di Lalla, N., Di Venere, L., Domínguez, A., Ferrara, E.C., Fiori, A., Fukazawa, Y., Fusco, P., Gammaldi, V., Gargano, F., Garrappa, S., Gasbarra, C., Gasparrini, D., Giglietto, N., Giordano, F., Giroletti, M., Green, D., Grenier, I.A., Guiriec, S., Gustafsson, M., Horan, D., Hou, X., Johannesson, G., Kerr, M., Kocevski, D., Kuss, M., Latronico, L., Li, J., Liodakis, I., Longo, F., Loparco, F., Lorusso, N., Lott, B., Lovellette, M.N., Lubrano, P., Maldera, S., Manfreda, A., Martí-Devesa, G., Mazziotta, M.N., Mereu, I., Michelson, P.F., Mizuno, T., Monzani, M.E., Morselli, A., Moskalenko, I.V., Negro, M., Omodei, N., Orlando, E., Ormes, J.F., Panzarini, G., Perkins, J.S., Persic, M., Pesce-Rollins, M., Pillera, R., Porter, T.A., Principe, G., Raino, S., Rando, R., Rani, B., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Sanchez-Conde, M., Saz Parkinson, P.M., Serini, D., Sgro, C., Siskind, E.J., Spandre, G., Spinelli, P., Suson, D.J., Tajima, H., Thompson, D.J., Torres, D.F., Valverde, J., Wadiasingh, Z., Wagner, S., Wood, K., and HEP, INSPIRE
Subjects: gamma ray, photon, [PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph], GLAST
Abstract: The Fermi Large Area Telescope (LAT) light curve repository (LCR) is a publicly available, continually updated library of gamma-ray light curves of variable Fermi-LAT sources generated over multiple timescales. The Fermi-LAT LCR aims to provide publication-quality light curves binned on timescales of 3 days, 7 days, and 30 days for 1525 sources deemed variable in the source catalog of the first 10 years of Fermi-LAT observations. The repository consists of light curves generated through full likelihood analyses that model the sources and the surrounding region, providing fluxes and photon indices for each time bin. The LCR is intended as a resource for the time-domain and multi-messenger communities by allowing users to quickly search LAT data to identify correlated variability and flaring emission episodes from gamma-ray sources. We describe the sample selection and analysis employed by the LCR and provide an overview of the associated data access portal.
Published: 2023

3. Spectra of Cosmic Ray Fluorine, Sodium and Aluminum and the Hints of Low-energy Excesses

Author: Masi, Nicolo, primary, Boschini, M. J., additional, DellaTorre, S., additional, Gervasi, M., additional, Grandi, D., additional, Johannesson, G., additional, LaVacca, G., additional, Moskalenko, I.V., additional, Pensotti, S., additional, Porter, T.A., additional, Quadrani, L., additional, Rancoita, P.G., additional, Rozza, D., additional, and Tacconi, M., additional
Published: 2022
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4. A gamma-ray pulsar timing array constrains the nanohertz gravitational wave background

Author: Ajello, M., Atwood, W.B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Berretta, A., Bhattacharyya, B., Bissaldi, E., Blandford, R.D., Bloom, E., Bonino, R., Bruel, P., Buehler, R., Burns, E., Buson, S., Cameron, R.A., Caraveo, P.A., Cavazzuti, E., Cibrario, N., Ciprini, S., Clark, C.J., Cognard, I., Coronado-Blazquez, J., Crnogorcevic, M., Cromartie, H., Crowter, K., Cutini, S., d'Ammando, F., de Gaetano, S., de Palma, F., Digel, S.W., Di Lalla, N., Dirirsa, F. Fana, Di Venere, L., Domínguez, A., Ferrara, E.C., Fiori, A., Franckowiak, A., Fukazawa, Y., Funk, S., Fusco, P., Gammaldi, V., Gargano, F., Gasparrini, D., Giglietto, N., Giordano, F., Giroletti, M., Green, D., Grenier, I.A., Guillemot, L., Guiriec, S., Gustafsson, M., Harding, A.K., Hays, E., Hewitt, J.W., Horan, D., Hou, X., Johannesson, G., Keith, M.J., Kerr, M., Kramer, M., Kuss, M., Larsson, S., Latronico, L., Li, J., Longo, F., Loparco, F., Lovellette, M.N., Lubrano, P., Maldera, S., Manfreda, A., Martí-Devesa, G., Mazziotta, M.N., Mereu, I., Michelson, P.F., Mirabal, N., Mitthumsiri, W., Mizuno, T., Monzani, M.E., Morselli, A., Negro, M., Nieder, L., Ojha, R., Omodei, N., Orienti, M., Orlando, E., Ormes, J.F., Paneque, D., Parthasarathy, A., Pei, Z., Persic, M., Pesce-Rollins, M., Pillera, R., Poon, H., Porter, T.A., Principe, G., Racusin, J.L., Raino, S., Rando, R., Rani, B., Ransom, S.M., Ray, P.S., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Roy, J., Sanchez-Conde, M., Saz Parkinson, P.M., Scargle, J., Scotton, L., Serini, D., Sgro, C., Siskind, E.J., Smith, D.A., Spandre, G., Spiewak, R., Spinelli, P., Stairs, I., Suson, D.J., Swihart, S.J., Tabassum, S., Thayer, J.B., Theureau, G., Torres, D.F., Troja, E., Valverde, J., Wadiasingh, Z., Wood, K., Zaharijas, G., UAM. Departamento de Física Teórica, Ajello, M., Atwood, W. B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bellazzini, R., Berretta, A., Bhattacharyya, B., Bissaldi, E., Blandford, R. D., Bloom, E., Bonino, R., Bruel, P., Buehler, R., Burns, E., Buson, S., Cameron, R. A., Caraveo, P. A., Cavazzuti, E., Cibrario, N., Ciprini, S., Clark, C. J., Cognard, I., Coronado-Bl??zquez, J., Crnogorcevic, M., Cromartie, H., Crowter, K., Cutini, S., D'Ammando, F., De Gaetano, S., de Palma, F., Digel, S. W., Di Lalla, N., Fana Dirirsa, F., Di Venere, L., Dom??nguez, A., Ferrara, E. C., Fiori, A., Franckowiak, A., Fukazawa, Y., Funk, S., Fusco, P., Gammaldi, V., Gargano, F., Gasparrini, D., Giglietto, N., Giordano, F., Giroletti, M., Green, D., Grenier, I. A., Guillemot, L., Guiriec, S., Gustafsson, M., Harding, A. K., Hays, E., Hewitt, J. W., Horan, D., Hou, X., J??hannesson, G., Keith, M. J., Kerr, M., Kramer, M., Kuss, M., Larsson, S., Latronico, L., Li, J., Longo, F., Loparco, F., Lovellette, M. N., Lubrano, P., Maldera, S., Manfreda, A., Mart??-Devesa, G., Mazziotta, M. N., Mereu, I., Michelson, P. F., Mirabal, N., Mitthumsiri, W., Mizuno, T., Monzani, M. E., Morselli, A., Negro, M., Nieder, L., Ojha, R., Omodei, N., Orienti, M., Orlando, E., Ormes, J. F., Paneque, D., Parthasarathy, A., Pei, Z., Persic, M., Pesce-Rollins, M., Pillera, R., Poon, H., Porter, T. A., Principe, G., Racusin, J. L., Rain??, S., Rando, R., Rani, B., Ransom, S. M., Ray, P. S., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Roy, J., S??nchez-Conde, M., Saz Parkinson, P. M., Scargle, J., Scotton, L., Serini, D., Sgr??, C., Siskind, E. J., Smith, D. A., Spandre, G., Spiewak, R., Spinelli, P., Stairs, I., Suson, D. J., Swihart, S. J., Tabassum, S., Thayer, J. B., Theureau, G., Torres, D. F., Troja, E., Valverde, J., Wadiasingh, Z., Wood, K., Zaharijas, G., Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Unité Scientifique de la Station de Nançay (USN), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire Univers et Particules de Montpellier (LUPM), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), and Fermi-LAT
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), Gravitational Waves, astro-ph.HE, noise, radio wave, Multidisciplinary, Astrophysics::High Energy Astrophysical Phenomena, gravitational radiation: background, DEAE-Dextran, binary, FOS: Physical sciences, Física, Diethylaminoethyldextran, GLAST, monitoring, gamma ray, black hole, galaxy, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - High Energy Astrophysical Phenomena, Pulsars, pulsar
Abstract: Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, los autores pertenecientes a la UAM y el nombre del grupo de colaboración, si lo hubiere, La Editorial no permite publicar la versión editorial, After large galaxies merge, their central supermassive black holes are expected to form binary systems. Their orbital motion should generate a gravitational wave background (GWB) at nanohertz frequencies. Searches for this background use pulsar timing arrays, which perform long-term monitoring of millisecond pulsars at radio wavelengths. We used 12.5 years of Fermi Large Area Telescope data to form a gamma-ray pulsar timing array. Results from 35 bright gamma-ray pulsars place a 95% credible limit on the GWB characteristic strain of 1.0 × 10-14 at a frequency of 1 year-1. The sensitivity is expected to scale with tobs, the observing time span, as t-13/6obs. This direct measurement provides an independent probe of the GWB while offering a check on radio noise models
Published: 2022

5. The on-orbit calibration of the Fermi Large Area Telescope

Author: Abdo, A.A., Ackermann, M., Ajello, M., Ampe, J., Anderson, B., Atwood, W.B., Axelsson, M., Bagagli, R., Baldini, L., Ballet, J., Barbiellini, G., Bartelt, J., Bastieri, D., Baughman, B.M., Bechtol, K., Bédérède, D., Bellardi, F., Bellazzini, R., Belli, F., Berenji, B., Bisello, D., Bissaldi, E., Bloom, E.D., Bogaert, G., Bogart, J.R., Bonamente, E., Borgland, A.W., Bourgeois, P., Bouvier, A., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Burnett, T.H., Busetto, G., Caliandro, G.A., Cameron, R.A., Campell, M., Caraveo, P.A., Carius, S., Carlson, P., Casandjian, J.M., Cavazzuti, E., Ceccanti, M., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C.C., Chiang, J., Chipaux, R., Cillis, A.N., Ciprini, S., Claus, R., Cohen-Tanugi, J., Condamoor, S., Conrad, J., Corbet, R., Cutini, S., Davis, D.S., DeKlotz, M., Dermer, C.D., de Angelis, A., de Palma, F., Digel, S.W., Dizon, P., Dormody, M., do Couto e Silva, E., Drell, P.S., Dubois, R., Dumora, D., Edmonds, Y., Fabiani, D., Farnier, C., Favuzzi, C., Ferrara, E.C., Ferreira, O., Fewtrell, Z., Flath, D.L., Fleury, P., Focke, W.B., Fouts, K., Frailis, M., Freytag, D., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., Goodman, J., Grenier, I.A., Grondin, M.-H., Grove, J.E., Guillemot, L., Guiriec, S., Hakimi, M., Haller, G., Hanabata, Y., Hart, P.A., Hascall, P., Hays, E., Huffer, M., Hughes, R.E., Jóhannesson, G., Johnson, A.S., Johnson, R.P., Johnson, T.J., Johnson, W.N., Kamae, T., Katagiri, H., Kataoka, J., Kavelaars, A., Kelly, H., Kerr, M., Klamra, W., Knödlseder, J., Kocian, M.L., Kuehn, F., Kuss, M., Latronico, L., Lavalley, C., Leas, B., Lee, B., Lee, S.-H., Lemoine-Goumard, M., Longo, F., Loparco, F., Lott, B., Lovellette, M.N., Lubrano, P., Lung, D.K., Madejski, G.M., Makeev, A., Marangelli, B., Marchetti, M., Massai, M.M., May, D., Mazzenga, G., Mazziotta, M.N., McEnery, J.E., McGlynn, S., Meurer, C., Michelson, P.F., Minuti, M., Mirizzi, N., Mitra, P., Mitthumsiri, W., Mizuno, T., Moiseev, A.A., Mongelli, M., Monte, C., Monzani, M.E., Moretti, E., Morselli, A., Moskalenko, I.V., Murgia, S., Nelson, D., Nilsson, L., Nishino, S., Nolan, P.L., Nuss, E., Ohno, M., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J.F., Ozaki, M., Paccagnella, A., Paneque, D., Panetta, J.H., Parent, D., Pelassa, V., Pepe, M., Pesce-Rollins, M., Picozza, P., Pinchera, M., Piron, F., Porter, T.A., Rainò, S., Rando, R., Rapposelli, E., Raynor, W., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Reyes, L.C., Ritz, S., Robinson, S., Rochester, L.S., Rodriguez, A.Y., Romani, R.W., Roth, M., Ryde, F., Sacchetti, A., Sadrozinski, H.F.-W., Saggini, N., Sanchez, D., Sander, A., Sapozhnikov, L., Saxton, O.H., Saz Parkinson, P.M., Sellerholm, A., Sgrò, C., Siskind, E.J., Smith, D.A., Smith, P.D., Spandre, G., Spinelli, P., Starck, J.-L., Stephens, T.E., Strickman, M.S., Strong, A.W., Sugizaki, M., Suson, D.J., Tajima, H., Takahashi, H., Takahashi, T., Tanaka, T., Tenze, A., Thayer, J.B., Thayer, J.G., Thompson, D.J., Tibaldo, L., Tibolla, O., Torres, D.F., Tosti, G., Tramacere, A., Turri, M., Usher, T.L., Vilchez, N., Virmani, N., Vitale, V., Wai, L.L., Waite, A.P., Wang, P., Winer, B.L., Wood, D.L., Wood, K.S., Yasuda, H., Ylinen, T., and Ziegler, M.
Published: 2009
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6. The First Fermi-LAT Solar Flare Catalog Appendix

Author: Ajello, M, Baldini, L, Bastieri, D, Bellazzini, R, Berretta, A, Bissaldi, E, Blandford, R.D, Bonino, R, Bruel, P, Cameron, R, Caputo, R, Cavazzuti, E, Cheung, C.C, Chiaro, G, Costantin, D, Cutini, S, D'Ammando, F, De Palma, F, Di Lalla, N, Dirirsa, F, Di Venere, L, Fegan, S.J, Fukazawa, Y, Funk, S, Fusco, P, Gargano, F, Gasparrini, D, Giordano, F, Giroletti, M, Green, D, Guirec, S, Hayes, E, Hewitt, J.W, Horan, D, Johannesson, G, Kovac'evic, M, Kuss, M, Larsson, S, Latronico, L, Li, J, Longo, F, Lovellette, M.N, Lubrano, P, Maldera, S, Manfreda, A, Marti-Devesa, G, Mazziotta, M.N, Mereu, I, Michelson, P.F, Mizuno, T, Monzani, M.E, Morselli, A, Moskalenko, I, Negro, M, Omodei, N, Orienti, M, Orlando, E, Paneque, D, Pei, Z, Persic, M, Pesce-Rollins, M, Petrosian, V, Piron, F, Porter, T.A, Principe, G, Racusin, J.L, Raino', S, Rando, R, Rani, B, Razzano, M, Razzaque, S, Reimer, A, Reimer, O, Serini, D, Sgro', C, Siskind, E.J, Spandre, G, Spinelli, P, Tak, D, Troja, E, Valverde, J, Wood, K, and Zaharijas, G
Subjects: Astrophysics::High Energy Astrophysical Phenomena, Physics::Space Physics, Astrophysics::Solar and Stellar Astrophysics
Abstract: We present the appendix of the First Fermi-Large Area Telescope (LAT) Solar flare catalog covering the 24thSolar cycle. The catalog (published in ApJS) contains 45 Fermi-LAT Solar flares (FLSFs) with emission in theγ-ray energy band (30 MeV -10 GeV) detected with a significance ≥5σ over the years 2010-2018. A subsample containing 37 of these flares exhibit delayed emission beyond the prompt-impulsive hard X-ray phase with 21 flares showing delayed emission lasting more than two hours. No prompt-impulsive emission is detected in four of these flares. We also report the first time observations of GeV emission from 3 flares originating from Active Regions located behind the limb (BTL) of the visible Solar disk. We report the light curves, spectra, best proton index and localization (when possible) for all the FLSFs and correlations with Solar multi-wavelength phenomena. The gamma-ray spectra is consistent with the decay of pions produced by >300 MeV protons. The work presented in the First Fermi Solar Flare Catalog contains the largest sample of high-energy gamma-ray flares ever reported and provides the unique opportunity to perform population/correlation studies on the different phases of the flare and thus allowing to open a new window in solar physics. This work is on behalf of the Fermi Large Area Telescope Collaboration. The First Fermi LAT Solar Flare Catalog has been accepted for publication on ApJS.
Published: 2020
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7. Anisotropy studies around the galactic centre at EeV energies with the Auger Observatory

Author: Abraham, J., Aglietta, M., Aguirre, C., Allard, D., Allekotte, I., Allison, P., Alvarez, C., Alvarez-Muñiz, J., Ambrosio, M., Anchordoqui, L., Anjos, J.C., Aramo, C., Arisaka, K., Armengaud, E., Arneodo, F., Arqueros, F., Asch, T., Asorey, H., Atulugama, B.S., Aublin, J., Ave, M., Avila, G., Bacelar, J., Bäcker, T., Badagnani, D., Barbosa, A.F., Barbosa, H.M.J., Barkhausen, M., Barnhill, D., Barroso, S.L.C., Bauleo, P., Beatty, J., Beau, T., Becker, B.R., Becker, K.H., Bellido, J.A., BenZvi, S., Berat, C., Bergmann, T., Bernardini, P., Bertou, X., Biermann, P.L., Billoir, P., Blanch-Bigas, O., Blanco, F., Blasi, P., Bleve, C., Blümer, H., Boghrat, P., Boháčová, M., Bonifazi, C., Bonino, R., Boratav, M., Brack, J., Brunet, J.M., Buchholz, P., Busca, N.G., Caballero-Mora, K.S., Cai, B., Camin, D.V., Capdevielle, J.N., Caruso, R., Castellina, A., Cataldi, G., Cazón, L., Cester, R., Chauvin, J., Chiavassa, A., Chinellato, J.A., Chou, A., Chye, J., Claes, D., Clark, P.D.J., Clay, R.W., Clay, S.B., Connolly, B., Cordier, A., Cotti, U., Coutu, S., Covault, C.E., Cronin, J., Dagoret-Campagne, S., Quang, T. Dang, Darriulat, P., Daumiller, K., Dawson, B.R., de Almeida, R.M., de Carvalho, L.A., De Donato, C., de Jong, S.J., de Mello, W.J.M., Junior, de Mello Neto, J.R.T., De Mitri, I., de Oliveira, M.A.L., de Souza, V., del Peral, L., Deligny, O., Selva, A. Della, Fratte, C. Delle, Dembinski, H., Di Giulio, C., Diaz, J.C., Dobrigkeit, C., D’Olivo, J.C., Dornic, D., Dorofeev, A., Dova, M.T., D’Urso, D., DuVernois, M.A., Engel, R., Epele, L., Erdmann, M., Escobar, C.O., Etchegoyen, A., Ewers, A., Facal San Luis, P., Falcke, H., Fauth, A.C., Fazio, D., Fazzini, N., Fernández, A., Ferrer, F., Ferry, S., Fick, B., Filevich, A., Filipčič, A., Fleck, I., Fokitis, E., Fonte, R., Fuhrmann, D., Fulgione, W., García, B., Garcia-Pinto, D., Garrard, L., Garrido, X., Geenen, H., Gelmini, G., Gemmeke, H., Geranios, A., Ghia, P.L., Giller, M., Gitto, J., Glass, H., Gobbi, F., Gold, M.S., Gomez Albarracin, F., Gómez Berisso, M., Gómez Herrero, R., Gonçalves do Amaral, M., Gongora, J.P., Gonzalez, D., Gonzalez, J.G., González, M., Góra, D., Gorgi, A., Gouffon, P., Grassi, V., Grillo, A., Grunfeld, C., Grupen, C., Guarino, F., Guedes, G.P., Gutiérrez, J., Hague, J.D., Hamilton, J.C., Harakeh, M.N., Harari, D., Harmsma, S., Hartmann, S., Harton, J.L., Haungs, A., Healy, M.D., Hebbeker, T., Heck, D., Hojvat, C., Homola, P., Hörandel, J., Horneffer, A., Horvat, M., Hrabovský, M., Huege, T., Iarlori, M., Insolia, A., Kaducak, M., Kalashev, O., Kampert, K.H., Keilhauer, B., Kemp, E., Klages, H.O., Kleifges, M., Kleinfeller, J., Knapik, R., Knapp, J., Koang, D.-H., Kolotaev, Y., Kopmann, A., Krömer, O., Kuhlman, S., Kuijpers, J., Kunka, N., Kusenko, A., Lachaud, C., Lago, B.L., Lebrun, D., LeBrun, P., Lee, J., Letessier-Selvon, A., Leuthold, M., Lhenry-Yvon, I., Longo, G., López, R., Lopez Agüera, A., Lucero, A., Maldera, S., Malek, M., Maltezos, S., Mancarella, G., Manceñido, M.E., Mandat, D., Mantsch, P., Mariazzi, A.G., Maris, I.C., Martello, D., Martinez, N., Martínez, J., Martínez, O., Mathes, H.J., Matthews, J., Matthews, J.A.J., Matthiae, G., Maurin, G., Maurizio, D., Mazur, P.O., McCauley, T., McEwen, M., McNeil, R.R., Medina, G., Medina, M.C., Medina Tanco, G., Meli, A., Melo, D., Menichetti, E., Menshikov, A., Meurer, Chr., Meyhandan, R., Micheletti, M.I., Miele, G., Miller, W., Mollerach, S., Monasor, M., Monnier Ragaigne, D., Montanet, F., Morales, B., Morello, C., Moreno, E., Morris, C., Mostafá, M., Muller, M.A., Mussa, R., Navarra, G., Nellen, L., Newman-Holmes, C., Newton, D., Thi, T. Nguyen, Nichol, R., Nierstenhöfer, N., Nitz, D., Nogima, H., Nosek, D., Nožka, L., Oehlschläger, J., Ohnuki, T., Olinto, A., Oliveira, L.F.A., Olmos-Gilbaja, V.M., Ortiz, M., Ostapchenko, S., Otero, L., Palatka, M., Pallotta, J., Parente, G., Parizot, E., Parlati, S., Patel, M., Paul, T., Payet, K., Pech, M., Pe¸kala, J., Pelayo, R., Pepe, I.M., Perrone, L., Petrera, S., Petrinca, P., Petrov, Y., Pham Ngoc, D., Pham Thi, T.N., Piegaia, R., Pierog, T., Pisanti, O., Porter, T.A., Pouryamout, J., Prado, L., Junior, Privitera, P., Prouza, M., Quel, E.J., Rautenberg, J., Reis, H.C., Reucroft, S., Revenu, B., Řídký, J., Risi, A., Risse, M., Rivière, C., Rizi, V., Robbins, S., Roberts, M., Robledo, C., Rodriguez, G., Rodríguez Frías, D., Rodriguez Martino, J., Rodriguez Rojo, J., Ros, G., Rosado, J., Roth, M., Roucelle, C., Rouillé-d’Orfeuil, B., Roulet, E., Rovero, A.C., Salamida, F., Salazar, H., Salina, G., Sánchez, F., Santander, M., Santos, E.M., Sarkar, S., Sato, R., Scherini, V., Schieler, H., Schmidt, T., Scholten, O., Schovánek, P., Schüssler, F., Sciutto, S.J., Scuderi, M., Semikoz, D., Sequeiros, G., Shellard, R.C., Siffert, B.B., Sigl, G., Skelton, P., Slater, W., De Grande, N. Smetniansky, Smiałkowski, A., Šmída, R., Smith, B.E., Snow, G.R., Sokolsky, P., Sommers, P., Sorokin, J., Spinka, H., Strazzeri, E., Stutz, A., Suarez, F., Suomijärvi, T., Supanitsky, A.D., Swain, J., Szadkowski, Z., Tamashiro, A., Tamburro, A., Tascau, O., Ticona, R., Timmermans, C., Tkaczyk, W., Todero Peixoto, C.J., Tonachini, A., Torresi, D., Travnicek, P., Tripathi, A., Tristram, G., Tscherniakhovski, D., Tueros, M., Tunnicliffe, V., Ulrich, R., Unger, M., Urban, M., Valdés Galicia, J.F., Valiño, I., Valore, L., van den Berg, A.M., van Elewyck, V., Vazquez, R.A., Veberič, D., Veiga, A., Velarde, A., Venters, T., Verzi, V., Videla, M., Villaseñor, L., Vo Van, T., Vorobiov, S., Voyvodic, L., Wahlberg, H., Wainberg, O., Waldenmaier, T., Walker, P., Warner, D., Watson, A.A., Westerhoff, S., Wiebusch, C., Wieczorek, G., Wiencke, L., Wilczyńska, B., Wilczyński, H., Wileman, C., Winnick, M.G., Xu, J., Yamamoto, T., Younk, P., Zas, E., Zavrtanik, D., Zavrtanik, M., Zech, A., Zepeda, A., Zha, M., and Ziolkowski, M.
Published: 2007
Full Text: View/download PDF

8. An upper limit to the photon fraction in cosmic rays above 10 19 eV from the Pierre Auger Observatory

Author: Abraham, J., Aglietta, M., Aguirre, C., Allard, D., Allekotte, I., Allison, P., Alvarez, C., Alvarez-Muñiz, J., Ambrosio, M., Anchordoqui, L., Anjos, J.C., Aramo, C., Arisaka, K., Armengaud, E., Arneodo, F., Arqueros, F., Asch, T., Asorey, H., Atulugama, B.S., Aublin, J., Ave, M., Avila, G., Bacelar, J., Bäcker, T., Badagnani, D., Barbosa, A.F., Barbosa, H.M.J., Barkhausen, M., Barnhill, D., Barroso, S.L.C., Bauleo, P., Beatty, J., Beau, T., Becker, B.R., Becker, K.H., Bellido, J.A., BenZvi, S., Berat, C., Bergmann, T., Bernardini, P., Bertou, X., Biermann, P.L., Billoir, P., Blanch-Bigas, O., Blanco, F., Blasi, P., Bleve, C., Blümer, H., Boghrat, P., Boháčová, M., Bonifazi, C., Bonino, R., Boratav, M., Brack, J., Brunet, J.M., Buchholz, P., Busca, N.G., Caballero-Mora, K.S., Cai, B., Camin, D.V., Capdevielle, J.N., Caruso, R., Castellina, A., Cataldi, G., Cazón, L., Cester, R., Chauvin, J., Chiavassa, A., Chinellato, J.A., Chou, A., Chye, J., Claes, D., Clark, P.D.J., Clay, R.W., Clay, S.B., Connolly, B., Cordier, A., Cotti, U., Coutu, S., Covault, C.E., Cronin, J., Dagoret-Campagne, S., Dang Quang, T., Darriulat, P., Daumiller, K., Dawson, B.R., de Almeida, R.M., de Carvalho, L.A., De Donato, C., de Jong, S.J., de Mello, W.J.M., Jr., de Mello Neto, J.R.T., De Mitri, I., de Oliveira, M.A.L., de Souza, V., del Peral, L., Deligny, O., Della Selva, A., Delle Fratte, C., Dembinski, H., Di Giulio, C., Diaz, J.C., Dobrigkeit, C., D’Olivo, J.C., Dornic, D., Dorofeev, A., Dova, M.T., D’Urso, D., DuVernois, M.A., Engel, R., Epele, L., Erdmann, M., Escobar, C.O., Etchegoyen, A., Ewers, A., Facal San Luis, P., Falcke, H., Fauth, A.C., Fazio, D., Fazzini, N., Fernández, A., Ferrer, F., Ferry, S., Fick, B., Filevich, A., Filipčič, A., Fleck, I., Fokitis, E., Fonte, R., Fuhrmann, D., Fulgione, W., García, B., Garcia-Pinto, D., Garrard, L., Garrido, X., Geenen, H., Gelmini, G., Gemmeke, H., Geranios, A., Ghia, P.L., Giller, M., Gitto, J., Glass, H., Gobbi, F., Gold, M.S., Gomez Albarracin, F., Gómez Berisso, M., Gómez Herrero, R., Gonçalves do Amaral, M., Gongora, J.P., Gonzalez, D., Gonzalez, J.G., González, M., Góra, D., Gorgi, A., Gouffon, P., Grassi, V., Grillo, A., Grunfeld, C., Grupen, C., Guarino, F., Guedes, G.P., Gutiérrez, J., Hague, J.D., Hamilton, J.C., Harakeh, M.N., Harari, D., Harmsma, S., Hartmann, S., Harton, J.L., Healy, M.D., Hebbeker, T., Heck, D., Hojvat, C., Homola, P., Hörandel, J., Horneffer, A., Horvat, M., Hrabovský, M., Iarlori, M., Insolia, A., Kaducak, M., Kalashev, O., Kampert, K.H., Keilhauer, B., Kemp, E., Klages, H.O., Kleifges, M., Kleinfeller, J., Knapik, R., Knapp, J., Koang, D.-H., Kolotaev, Y., Kopmann, A., Krömer, O., Kuhlman, S., Kuijpers, J., Kunka, N., Kusenko, A., Lachaud, C., Lago, B.L., Lebrun, D., LeBrun, P., Lee, J., Letessier-Selvon, A., Leuthold, M., Lhenry-Yvon, I., Longo, G., López, R., Lopez Agüera, A., Lucero, A., Maldera, S., Malek, M., Maltezos, S., Mancarella, G., Manceñido, M.E., Mandat, D., Mantsch, P., Mariazzi, A.G., Maris, I.C., Martello, D., Martinez, N., Martínez, J., Martínez, O., Mathes, H.J., Matthews, J., Matthews, J.A.J., Matthiae, G., Maurin, G., Maurizio, D., Mazur, P.O., McCauley, T., McEwen, M., McNeil, R.R., Medina, G., Medina, M.C., Medina Tanco, G., Meli, A., Melo, D., Menichetti, E., Menshikov, A., Meurer, Chr., Meyhandan, R., Micheletti, M.I., Miele, G., Miller, W., Mollerach, S., Monasor, M., Monnier Ragaigne, D., Montanet, F., Morales, B., Morello, C., Moreno, E., Morris, C., Mostafá, M., Muller, M.A., Mussa, R., Navarra, G., Nellen, L., Newman-Holmes, C., Newton, D., Nguyen Thi, T., Nichol, R., Nierstenhöfer, N., Nitz, D., Nogima, H., Nosek, D., Nožka, L., Oehlschläger, J., Ohnuki, T., Olinto, A., Oliveira, L.F.A., Olmos-Gilbaja, V.M., Ortiz, M., Ostapchenko, S., Otero, L., Palatka, M., Pallotta, J., Parente, G., Parizot, E., Parlati, S., Patel, M., Paul, T., Payet, K., Pech, M., Pe¸kala, J., Pelayo, R., Pepe, I.M., Perrone, L., Petrera, S., Petrinca, P., Petrov, Y., Pham Ngoc, D., Pham Thi, T.N., Piegaia, R., Pierog, T., Pisanti, O., Porter, T.A., Pouryamout, J., Prado, L., Jr., Privitera, P., Prouza, M., Quel, E.J., Rautenberg, J., Reis, H.C., Reucroft, S., Revenu, B., Řídký, J., Risi, A., Risse, M., Rivière, C., Rizi, V., Robbins, S., Roberts, M., Robledo, C., Rodriguez, G., Rodríguez Frías, D., Rodriguez Martino, J., Rodriguez Rojo, J., Ros, G., Rosado, J., Roth, M., Roucelle, C., Rouillé-d’Orfeuil, B., Roulet, E., Rovero, A.C., Salamida, F., Salazar, H., Salina, G., Sánchez, F., Santander, M., Santos, E.M., Sarkar, S., Sato, R., Scherini, V., Schmidt, T., Scholten, O., Schovánek, P., Schüssler, F., Sciutto, S.J., Scuderi, M., Semikoz, D., Sequeiros, G., Shellard, R.C., Siffert, B.B., Sigl, G., Skelton, P., Slater, W., Smetniansky De Grande, N., Smiałkowski, A., Šmída, R., Smith, B.E., Snow, G.R., Sokolsky, P., Sommers, P., Sorokin, J., Spinka, H., Strazzeri, E., Stutz, A., Suarez, F., Suomijärvi, T., Supanitsky, A.D., Swain, J., Szadkowski, Z., Tamashiro, A., Tamburro, A., Tascau, O., Ticona, R., Timmermans, C., Tkaczyk, W., Todero Peixoto, C.J., Tonachini, A., Torresi, D., Travnicek, P., Tripathi, A., Tristram, G., Tscherniakhovski, D., Tueros, M., Tunnicliffe, V., Ulrich, R., Unger, M., Urban, M., Valdés Galicia, J.F., Valiño, I., Valore, L., van den Berg, A.M., van Elewyck, V., Vazquez, R.A., Veberič, D., Veiga, A., Velarde, A., Venters, T., Verzi, V., Videla, M., Villaseñor, L., Vo Van, T., Vorobiov, S., Voyvodic, L., Wahlberg, H., Wainberg, O., Waldenmaier, T., Walker, P., Warner, D., Watson, A.A., Westerhoff, S., Wiebusch, C., Wieczorek, G., Wiencke, L., Wilczyńska, B., Wilczyński, H., Wileman, C., Winnick, M.G., Xu, J., Yamamoto, T., Younk, P., Zas, E., Zavrtanik, D., Zavrtanik, M., Zech, A., Zepeda, A., Zha, M., and Ziolkowski, M.
Published: 2007
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9. The offline software framework of the Pierre Auger Observatory

Author: Argirò, S., Barroso, S.L.C., Gonzalez, J., Nellen, L., Paul, T., Porter, T.A., Prado Jr., L., Roth, M., Ulrich, R., and Veberič, D.
Published: 2007
Full Text: View/download PDF

10. Properties and performance of the prototype instrument for the Pierre Auger Observatory

Author: Abraham, J., Aglietta, M., Aguirre, I.C., Albrow, M., Allard, D., Allekotte, I., Allison, P., Alvarez Muñiz, J., do Amaral, M.G., Ambrosio, M., Anchordoqui, L., Andrews, R., Anguiano, M., dos Anjos, J.C., Aramo, C., Argiro, S., Arisaka, K., Arteaga, J.C., Atulugama, S., Ave, M., Avila, G., Baggio, R., Bai, X., Barbosa, A.F., Barbosa, H.M.J., Barnhill, D., Barroso, S.L.C., Bauleo, P., Beatty, J., Beau, T., Becker, K.-H., Bellido, J.A., Bello, P., Bergmann, T., Berman, E., Bertou, X., Biermann, P., Billoir, P., Biral, R., Bluemer, H., Bohacova, M., Bollmann, E., Bonifazi, C., Boratav, M., Boselli, A., Brack, J., Brunet, J.-M., Bui-Duc, H., Cabrera, V., Camin, D.V., Capdevielle, J.-N., Carreño, A., Cartiglia, N., Caruso, R., de Carvalho, L.A., Casanova, S., Casimiro, E., Castellina, A., Castro, J., Cattaneo, P.W., Cazon, L., Cester, R., Chávez, N., Cheam, D., Chiavassa, A., Chinellato, J.A., Chiosso, M., Chou, A., Chye, J., Cillis, A., Civit, B., Claes, D., Clark, P.D.J., Clay, R.W., Cohen, F., Cordero, A., Cordier, A., Cormier, E., Cotzomi, J., Cotti, U., Coutu, S., Covault, C.E., Creusot, A., Cronin, J.W., Cuautle, M., Dagoret-Campagne, S., Dang-Quang, T., Da Silva, P., Darling, J., Darriulat, P., Daumiller, K., Dawson, B.R., de Bruijn, L., De Capoa, A., de Oliveira, M.A.L., de Souza, V., Della Selva, A., Deligny, O., Diaz, J.C., Dobrigkeit, C., D'Olivo, J.C., Dorofeev, A., Dova, M.T., Dye, A., DuVernois, M.A., Engel, R., Epele, L.N., Eschstruth, P., Escobar, C.O., Etchegoyen, A., Facal San Luis, P., Fauth, A.C., Fazzini, N., Fernández, A., Ferrero, A.M.J., Fick, B., Filevich, A., Filipčič, A., Fonte, R., Fulgione, W., Gámez, E., Garcia, B., Garcia, C.A., Geenen, H., Gemmeke, H., Germain-Renaud, C., Ghia, P.L., Gibbs, K., Giller, M., Gitto, J., Glass, H., Gómez Berisso, M., Gomez Vitale, P.F., González, J., Gora, D., Goodwin, A., Gouffon, P., Grassi, V., Grillo, A.F., Grunfeld, C., Grygar, J., Guarino, F., Guedes, G., Guerard, C., Gumbsheimer, R., Harton, J.L., Hasenbalg, F., Heck, D., Hernández, J.M., Hoffer, D., Hojvat, C., Homola, P., Horvat, M., Hrabovsky, M., Insolia, A., Jaminion, S., Jerónimo, Y., Jiang, L., Kaducak, M., Kampert, K.-H., Keilhauer, B., Kemp, E., Klages, H., Kleifges, M., Kleinfeller, J., Knapp, J., Kopmann, A., Kunka, N., Kutschera, M., Lachaud, C., Lapolla, M., Letessier-Selvon, A., Lhenry-Yvon, I., Lloyd-Evans, J., López, R., Lopez Aguera, A., Lucano, M., Luna, R., Ma, Y., Manceñido, M.E., Manfredi, P.F., Manhaes, L., Mantsch, P., Mariazzi, A.G., Markus, M.J., Martin, G., Martineau, O., Martinez, J., Martinez, N., Martı́nez, O., Mathes, H.-J., Matthews, J.A.J., Matthews, J., Matthiae, G., Marques, E., Matussek, P., Maurin, G., Maurizio, D., Mazur, P., McCauley, T., McEwen, M., McNeil, R.R., Medina, C., Medina, M.C., Medina-Tanco, G., Melo, D., Melocchi, M., Menichetti, E., Menshikov, A., Meyer, F., Meyhandan, R., Meza, J.C., Miele, G., Miller, W., Mohammed, M., Monnier-Ragaigne, D., Morello, C., Moreno, E., Mostafa, M., Mussa, R., Nassini, H., Navarra, G., Nellen, L., Nerling, F., Newman-Holmes, C., Nicotra, D., Nigro, S., Nitz, D., Nogima, H., Nosek, D., Nuñez, M., Ohnuki, T., Olinto, A., Ostaptchenko, S., Palatka, M., Parente, G., Parizot, E., Pasaye, E.H., Pastrone, N., Patel, M., Paul, T., Pedraza, I., Pekala, J., Pelayo, R., Pepe, I.M., Pérez-Lorenzana, A., Perrone, L., Peshman, N., Petrera, S., Petrinca, P., Pham-Ngoc, D., Pham-Trung, P., Pierog, T., Pisanti, O., Playez, N., Ponce, E., Porter, T.A., Prado Junior, L., Privitera, P., Prouza, M., Pryke, C.L., Rafert, J.B., Raia, G., Ranchon, S., Ratti, L., Ravignani, D., Re, V., Reis, H.C., Reucroft, S., Revenue, B., Richter, M., Ridky, J., Risi, A., Risse, M., Rizi, V., Roberts, M.D., Robledo, C., Rodriguez, G., Rodriquez, J., Rodriquez Martino, J., Román, S., Rosa, L., Roth, M., Rovero, A.C., Salazar, H., Salina, G., Sanchez, F., Santander, M., dos Santos, L.G., Sato, R., Schovanek, P., Scherini, V., Sciutto, S.J., Sequeiros-Haddad, G., Shellard, R.C., Shibuya, E., Siguas, F.V., Slater, W., Smetniansky-De Grande, N., Smith, K., Snow, G.R., Sommers, P., Song, C., Spinka, H., Suarez, F., Suomijärvi, T., Supanitsky, D., Swain, J., Szadkowski, Z., Tamashiro, A., Thornton, G.J., Thouw, T., Ticona, R., Tkaczyk, W., Todero Peixoto, C.J., Tripathi, A., Tristram, G., Trombley, M., Tscherniakhovski, D., Tuckey, P., Tunnicliffe, V., Urban, M., Uribe Estrada, C., Valdés, J.F., Vargas, A., Vargas, C., Vazquez, R., Veberič, D., Veiga, A., Velarde, A., Vernotte, F., Verzi, V., Videla, M., Vigorito, C., Villaseñor, L.M., Vlcek, M., Voyvodic, L., Vo-Van, T., Waldenmaier, T., Walker, P., Warner, D., Watson, A.A., Wiebusch, Ch., Wieczorek, G., Wilczynska, B., Wilczynski, H., Wild, N.R., Yamamoto, T., Zas, E., Zavrtanik, D., Zavrtanik, M., Zepeda, A., Zhang, C., and Zhu, Q.
Published: 2004
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11. Searching the Gamma-ray Sky for Counterparts to Gravitational Wave Sources: Fermi GBM and LAT Observations of LVT151012 and GW151226

Author: RACUSIN, J, BURNS, E, GOLDSTEIN, A., CONNAUGHTON, V., WILSON-HODGE, C.A., JENKE, P., BLACKBURN, L., BRIGGS, M, BROIDA, J, CAMP, J, CHRISTENSEN, N., HUI, C M, LITTENBERG, L, SHAWHAN, P, SINGER, L., VEITCH, J, BHAT, P, CLEVELAND, W., FITZPATRICK, G, GIBBY, M, VON KIENLIN, A, MCBREEN, S, MAILYAN, B., MEEGAN, C.A., PACIESAS, W.S., PREECE, R.D., ROBERTS, O.J., STANBRO, M, VERES, P, ZHANG, B.-B, ACKERMANN, M., ALBERT, A., ATWOOD, William B., AXELSSON, Magnus, BALDINI, L., BALLET, Jean, BARBIELLINI, Guido, BARING, Matthew G., BASTIERI, D., BELLAZZINI, R., BISSALDI, E., BLANDFORD, R.D., BLOOM, E.D., BONINO, R., BREGEON, J., BRUEL, Pascal, BUSON, S., CALIANDRO, G.A., CAMERON, R. A., CAPUTO, R., CARAGIULO, M., CARAVEO, P. A., CAVAZZUTI, E., CHARLES, E., CHIANG, J., CIPRINI, S., COSTANZA, F., CUOCO, A., CUTINI, S., D'AMMANDO, F., DE PALMA, F., DESIANTE, R., DIGEL, S. W., LALLA, N. Di, DI MAURO, M., DI VENERE, L., DRELL, P S., FAVUZZI, C., FERRARA, E.C., FOCKE, W.B., FUKAZAWA, Y., FUNK, S, FUSCO, P., GARGANO, F., GASPARRINI, D., GIGLIETTO, N., GILL, G., GIROLETTI, M., GLANZMANN, T., GRANOT, J., GREEN, D., GROVE, J.E, GUILLEMOT, Lucas, GUIRIEC, S., HARDING, A.K., JOGLER, T., JÓHANNESSON, G., KAMAE, T., KENSEI, S., KOCEVSKI, D., KUSS, M., LARSSON, S., LATRONICO, L., LI, J., LONGO, F., LOPARCO, F., LUBRANO, P., MAGILL, J. D., MALDERA, S., MALYSHEV, D., MCENERY, J. E., MICHELSON, P.F., MIZUNO, T., MORSELLI, A., MOSKALENKO, I. V., NEGRO, M., NUSS, E., OMODEI, N., ORIENTI, M., ORLANDO, E., ORMES, J. F., PANEQUE, D., PERKINS, S., PESCE-ROLLINS, M., PIRON, Frédéric, PIVATO, G., PORTER, T.A., PRINCIPE, G., RAINÒ, S., RANDO, R., RAZZANO, M., RAZZAQUE, S., REIMER, A., REIMER, O., SAZ PARKINSON, P.M., SCARGLE, J.D., SGRÒ, C, SIMONE, D, SISKIND, E. J., SMITH, D, SPADA, F, SPINELLI, P, SUSON, D.J., TAJIMA, H, THAYER, J.B, TORRES, D.F, TROJA, E, UCHIYAMA, Y, VIANELLO, G, WOOD, K.S., WOOD, M., NASA Goddard Space Flight Center (GSFC), GSFC Laboratory for High Energy Astrophysics (LHEA), University of Alabama in Huntsville (UAH), Universities Space Research Association (USRA), NASA Marshall Space Flight Center (MSFC), Massachusetts Institute of Technology (MIT), Center for Space Plasma and Aeronomic Research [Huntsville] (CSPAR), Carleton College, Observatoire Royal de Belgique, Department of Physics and Astronomy [Northfield], University of Maryland [College Park], University of Maryland System, University of Birmingham [Birmingham], University College Dublin [Dublin] (UCD), Jacobs Technology ESCG, Max-Planck-Institut für Extraterrestrische Physik (MPE), University College of Dublin, Deutsches Elektronen-Synchrotron [Hamburg] (DESY), Los Alamos National Laboratory (LANL), Santa Cruz Institute for Particle Physics (SCIPP), University of California [Santa Cruz] (UC Santa Cruz), University of California (UC)-University of California (UC), Royal Institute of Technology [Stockholm] (KTH ), Istituto Nazionale di Fisica Nucleare [Pisa] (INFN), Istituto Nazionale di Fisica Nucleare (INFN), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (INFN, Sezione di Trieste), Department of Physics and Astronomy [Houston], Rice University [Houston], Istituto Nazionale di Fisica Nucleare, Sezione di Padova (INFN, Sezione di Padova), Istituto Nazionale di Fisica Nucleare, sezione di Bari (INFN, sezione di Bari), Kavli Institute for Particle Astrophysics and Cosmology (KIPAC), Stanford University, Istituto Nazionale di Fisica Nucleare, Sezione di Torino (INFN, Sezione di Torino), Laboratoire Univers et Particules de Montpellier (LUPM), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Dipartimento di Fisica 'M. Merlin' dell'Università e del Politecnico di Bari, Politecnico di Bari, Istituto di Astrofisica Spaziale e Fisica Cosmica - Milano (IASF-MI), Istituto Nazionale di Astrofisica (INAF), Agenzia Spaziale Italiana (ASI) Science Data Center, Istituto Nazionale di Fisica Nucleare, Sezione di Torino, Istituto di Radioastronomia [Bologna] (IRA), UGC-DAE Consortium for Scientific Research, AUTRES, Unité Scientifique de la Station de Nançay (USN), Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Hiroshima City University, SLAC National Accelerator Laboratory (SLAC), Open University of Israël, Department of Natural Sciences [Ra'anana}, Naval Research Laboratory (NRL), Friedrich-Alexander-Universität, University of Iceland [Reykjavik], Tokyo University of Science [Tokyo], Institut de Ciencies de l'Espai [Barcelona] (ICE-CSIC), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (INFN, Sezione di Perugia), Erlangen Centre for Astroparticle Physics (ECAP), Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tor Vergata (INFN, Sezione di Roma Tor Vergata), Istituto di Radioastronomia INAF, Department of Physics and Astronomy [Denver], University of Denver, Max-Planck-Institut für Kernphysik (MPIK), Max-Planck-Gesellschaft, Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, PPM Group [University of Johannesburg], Department of Geology [University of Johannesburg], University of Johannesburg [South Africa] (UJ)-University of Johannesburg [South Africa] (UJ), Universität Innsbruck [Innsbruck], NASA Ames Research Center (ARC), Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université de Cergy Pontoise (UCP), Université Paris-Seine-Université Paris-Seine-Centre National de la Recherche Scientifique (CNRS), NYCB Real-Time Computing Inc., Lattingtown, NYCB Real-Time Computing Inc. [Lattingtown], Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Purdue University [West Lafayette], Nagoya University, Department of Physics, Rikkyo University [Tokyo], University of California [Santa Cruz] (UCSC), University of California-University of California, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Montpellier 2 - Sciences et Techniques (UM2), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Dipartimento di Fisica M. MerlinUniversitte del Politecnico di Bari, Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO), Dipartimento di Fisica \M. Merlin' dell'Universita e del Politecnico di Bari, Science Institute, University of Iceland, Université Montpellier 2 - Sciences et Techniques (UM2), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), University of Johannesburg (UJ)-University of Johannesburg (UJ), Leopold-Franzens Universitat Innsbruck, École normale supérieure - Paris (ENS Paris), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Purdue University Calumet Department of Chemistry and Physics, National Institute for Nuclear Physics (INFN), Stanford University [Stanford], Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université d'Orléans (UO)-Observatoire des Sciences de l'Univers en région Centre (OSUC), PSL Research University (PSL)-PSL Research University (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-Centre National de la Recherche Scientifique (CNRS), Stanford Linear Accelerator Center (SLAC), Consejo Superior de Investigaciones Científicas [Spain] (CSIC), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), École normale supérieure - Paris (ENS Paris)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, and PSL Research University (PSL)-PSL Research University (PSL)-Université de Cergy Pontoise (UCP)
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), gravitational waves, Astrophysics::High Energy Astrophysical Phenomena, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], FOS: Physical sciences, gamma rays: general, methods: observational, Astrophysics - High Energy Astrophysical Phenomena
Abstract: We present the Fermi Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) observations of the LIGO binary black hole merger event GW151226 and candi- date LVT151012. No candidate electromagnetic counterparts were detected by either the GBM or LAT. We present a detailed analysis of the GBM and LAT data over a range of timescales from seconds to years, using automated pipelines and new techniques for char- acterizing the upper limits across a large area of the sky. Due to the partial GBM and LAT coverage of the large LIGO localization regions at the trigger times for both events, dif- ferences in source distances and masses, as well as the uncertain degree to which emission from these sources could be beamed, these non-detections cannot be used to constrain the variety of theoretical models recently applied to explain the candidate GBM counterpart to GW150914., 27 pages, 1 table, 11 figures, Submitted to ApJ
Published: 2017

12. Fermi LAT Stacking Analysis of Swift Localized Gamma-ray Bursts

Author: Ackermann, M., Ajello, M., Anderson, B., Atwood, W.B., Axelsson, M., Baldini, L., Barbiellini, G., Bastieri, D., Bellazzini, R., Bhat, P.N., Bissaldi, E., Bonino, R., Bottacini, E., Brandt, T.J., Bregeon, J., Bruel, P., Buehler, R., Buson, S., Caliandro, G.A., Cameron, R.A., Caragiulo, M., Caraveo, P.A., Cecchi, C., Charles, E., Chekhtman, A., Chiang, J., Chiaro, G., Ciprini, S., Claus, R., COHEN-TANUGI, J., Conrad, J., Cutini, S., D'Ammando, F., De Angelis, A., De Palma, F., Desiante, R., Di Venere, L., Drell, P.S., Favuzzi, C., Focke, W.B., Franckowiak, A., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Giglietto, N., Giordano, F., Giroletti, M., Godfrey, G., Grenier, I.A., Grove, J.E., Guiriec, S., Hewitt, J.W., Hill, A.B., Horan, D., Johannesson, G., Kocevski, D., Kouveliotou, C., Kuss, M., Larsson, S., Li, J., Li, L., Longo, F., Loparco, F., Lovellette, M.N., Lubrano, P., Mayer, M., Mazziotta, M.N., Mcenery, J.E., Michelson, P.F., Mizuno, T., Monzani, M.E., Morselli, A., Murgia, S., Nemmen, R., Nuss, E., Ohno, M., Ohsugi, T., Omodei, N., Orienti, M., Orlando, E., Paneque, D., Perkins, J.S., Pesce-Rollins, M., Piron, F., Pivato, G., Porter, T.A., Racusin, J.L., Raino, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Schaal, M., Schulz, A., Sgro, C., Siskind, E.J., Spada, F., Spandre, G., Spinelli, P., Takahashi, H., Thayer, J.B., Tibaldo, L., Tinivella, M., Torres, D.F., Tosti, G., Troja, E., Vianello, G., Von Kienlin, A., Werner, M., Wood, K.S., Laboratoire Univers et Particules de Montpellier (LUPM), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Fermi-LAT, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), and Département de Physique des Particules (ex SPP) (DPhP)
Subjects: Astrophysics::High Energy Astrophysical Phenomena, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract: We perform a comprehensive stacking analysis of data collected by the Fermi Large Area Telescope (LAT) of gamma-ray bursts (GRB) localized by the Swift spacecraft, which were not detected by the LAT but which fell within the instrument's field of view at the time of trigger. We examine a total of 79 GRBs by comparing the observed counts over a range of time intervals to that expected from designated background orbits, as well as by using a joint likelihood technique to model the expected distribution of stacked counts. We find strong evidence for subthreshold emission at MeV to GeV energies using both techniques. This observed excess is detected during intervals that include and exceed the durations typically characterizing the prompt emission observed at keV energies and lasts at least 2700 s after the co-aligned burst trigger. By utilizing a novel cumulative likelihood analysis, we find that although a burst's prompt gamma-ray and afterglow X-ray flux both correlate with the strength of the subthreshold emission, the X-ray afterglow flux measured by Swift's X-ray Telescope (XRT) at 11 hr post trigger correlates far more significantly. Overall, the extended nature of the subthreshold emission and its connection to the burst's afterglow brightness lend further support to the external forward shock origin of the late-time emission detected by the LAT. These results suggest that the extended high-energy emission observed by the LAT may be a relatively common feature but remains undetected in a majority of bursts owing to instrumental threshold effects., Comment: Contact Authors: D. Kocevski, danielkocevski@nasa.gov; J. Chiang, jchiang@slac.stanford.edu; J. Racusin, judith.racusin@nasa.gov; 39 page, 13 figures, 1 Table, Accepted to ApJ
Published: 2016

13. DeCesar 19,43 , A. De Luca 44

Author: Abdo, A.A., Ajello, Marco, Allafort, A., Baldini, Luca, Ballet, Jean, Barbiellini, Guido, G. Baring, M., Bastieri, D., Bel Ore, A., Bellazzini, R., Bhattacharyya, B., Bissaldi, E., D. Bloom, E., Bonamente, E., Bottacini, E., J. Brandt, T., Bregeon, J., Brigida, M., Bruel, Pascal, Buehler, R., Burgay, M., H. Burnett, T., Busetto, G., Buson, S., A. Caliandro, G., A. Cameron, R., Camilo, F., Caraveo, P. A., M. Casandjian, J., Cecchi, C., C Elik, O., Charles, E., Chaty, S., Chaves, R.C.G., Chekhtman, A., W. Chen, A., Chiang, J., Chiaro, G., Ciprini, S., Claus, R., Cognard, Ismaël, Cohen-Tanugi, J., R. Cominsky, L., Conrad, J., Cutini, S., d'Ammando, F., de Angelis, A., E. Decesar, M., de Luca, A., R. den Hartog, P., de Palma, F., D. Dermer, C., Desvignes, G., W. Digel, S., Di Venere, L., S. Drell, P., Drlica-Wagner, A., Dubois, R., Dumora, D., M. Espinoza, C., Falletti, L., Favuzzi, C., C. Ferrara, E., B. Focke, W., Franckowiak, A., C. C. Freire, P., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Germani, S., Giglietto, N., Giommi, P., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., V. Gotthelf, E., A. Grenier, I., Grondin, M.-H., E. Grove, J., Guillemot, L., Guiriec, S., Hadasch, D., Hanabata, Y., K. Harding, A., Hayashida, M., Hays, E., Hessels, J., Hewitt, J., B. Hill, A., Horan, D., Hou, X., E. Hughes, R., S. Jackson, M., Janssen, G.H, Jogler, T., J Ohannesson, G., P. Johnson, R., S. Johnson, A., J. Johnson, T., N. Johnson, W., Johnston, S., Kamae, T., Kataoka, J., Keith, M., Kerr, M., Knödlseder, Jürgen, Kramer, M., Kuss, M., Lande, J., Larsson, S., Latronico, L., Lemoine-Goumard, M., Longo, F., Loparco, F., N. Lovellette, M., Lubrano, P., G. Lyne, A., N. Manchester, R., Marelli, M., Massaro, F., Mayer, M., N. Mazziotta, M., E. Mcenery, J., A. Mclaughlin, M., Mehault, J., F. Michelson, P., P. Mignani, R., Mitthumsiri, W., Mizuno, T., A. Moiseev, A., E. Monzani, M., Morselli, A., V. Moskalenko, I., Murgia, S., Nakamori, T., Nemmen, R., Nuss, E., Ohno, M., Ohsugi, T., Orienti, M., Orlando, E., F. Ormes, J., Paneque, D., H. Panetta, J., Parent, D., S. Perkins, J., Pesce-Rollins, M., Pierbattista, M., Piron, F., Pivato, G., J. Pletsch, H., Porter, T.A., Possenti, A., Rain O, S., Rando, R., M. Ransom, S., S. Ray, P., Razzano, M., Rea, N., Reimer, A., Reimer, O., Renault, N., Reposeur, T., Ritz, S., W. Romani, R., Roth, M., Rousseau, R., Roy, J., Ruan, Ji, Sartori, A., M. Saz Parkinson, P., D. Scargle, J., Schulz, A., Sgr O, C., Shannon, R., J. Siskind, E., Smith, David Stanley, Spandre, G., Spinelli, P., W. Stappers, B., W. Strong, A., J. Suson, D., Takahashi, H., G. Thayer, J., B. Thayer, J., Theureau, Gilles, J. Thompson, D., E. Thorsett, S., Tibaldo, L., Tibolla, O., Tinivella, M., F. Torres, D., Tosti, G., Troja, E., Uchiyama, Y., L. Usher, T., Vandenbroucke, J., Vasileiou, V., Venter, C., Vianello, G., Vitale, V., Wang, N., Weltevrede, P., L. Winer, B., T. Wol, M., L. Wood, D., S. Wood, K., Wood, M., Yang, Z., Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Unité Scientifique de la Station de Nançay (USN), Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université d'Orléans (UO), Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (LPC2E), Observatoire des Sciences de l'Univers en région Centre (OSUC), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National d’Études Spatiales [Paris] (CNES), Laboratoire Univers et Particules de Montpellier (LUPM), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Montpellier 2 - Sciences et Techniques (UM2), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), FERMI, Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Istituto Nazionale di Fisica Nucleare, sezione di Bari (INFN, sezione di Bari), Istituto Nazionale di Fisica Nucleare (INFN), IEEC-CSIC, Universitat Autònoma de Barcelona (UAB), Fermi-LAT, Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics::High Energy Astrophysical Phenomena, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: International audience; This catalog summarizes 117 high-confidence > 0.1 GeV gamma-ray pulsar detections using three years of data acquired by the Large Area Telescope (LAT) on the Fermi satellite. Half are neutron stars discovered using LAT data, through periodicity searches in gamma-ray and radio data around LAT unassociated source positions. The 117 pulsars are evenly divided into three groups: millisecond pulsars, young radio-loud pulsars, and young radio-quiet pulsars. We characterize the pulse profiles and energy spectra and derive luminosities when distance information exists. Spectral analysis of the off-peak phase intervals indicates probable pulsar wind nebula emission for four pulsars, and off-peak magnetospheric emission for several young and millisecond pulsars. We compare the gamma-ray properties with those in the radio, optical, and X-ray bands. We provide flux limits for pulsars with no observed gamma-ray emission, highlighting a small number of gamma-faint, radio-loud pulsars. The large, varied gamma-ray pulsar sample constrains emission models. Fermi's selection biases complement those of radio surveys, enhancing comparisons with predicted population distributions.
Published: 2013

14. High-Energy Gamma-Ray Emission From Solar Flares: Summary of Fermi LAT Detections and Analysis of Two M-Class Flares

Author: Ackermann, Markus, Ajello, Marco, Albert, A., Allafort, A., Baldini, Luca, Barbiellini, Guido, Bastieri, D., Bechtol, K., Bellazzini, R., Bissaldi, E., Bonamente, E., Bottacini, E., Bouvier, A., J. Brandt, T., Bregeon, J., Brigida, M., Bruel, Pascal, Buehler, R., Buson, S., A. Caliandro, G., A. Cameron, R., Caraveo, P. A., Cecchi, C., Charles, E., Chekhtman, A., Chiang, J., Chiaro, G., Ciprini, S., Claus, R., Cohen-Tanugi, J., Conrad, J., D'Ammando, F., De Angelis, A., De Palma, F., D. Dermer, C., W. Digel, S., Di Venere, L., Do Couto E Silva, E., S. Drell, P., Drlica-Wagner, A., Favuzzi, C., J. Fegan, S., B. Focke, W., Franckowiak, A., Fukazawa, Y., Gargano, F., Gasparrini, D., Germani, S., Giglietto, N., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., E. Grove, J., Guiriec, S., Hadasch, D., Hayashida, M., Hays, E., Horan, D., Inoue, Y., S. Jackson, M., Jogler, T., Kamae, T., Kawano, T., Kuss, M., Lande, J., Larsson, S., Latronico, L., Lemoine-Goumard, M., Longo, F., Loparco, F., N. Lovellette, M., Lubrano, P., Mayer, M., N. Mazziotta, M., F. Michelson, P., Mizuno, T., A. Moiseev, A., Monte, C., E. Monzani, M., Moretti, E., Morselli, A., V. Moskalenko, I., Murgia, S., Murphy, R., Nemmen, R., Ohno, M., Okumura, A., Omodei, N., Orienti, M., Orlando, E., F. Ormes, J., Paneque, D., H. Panetta, J., S. Perkins, J., Pesce-Rollins, M., Petrosian, V., Piron, F., Pivato, G., Porter, T.A., Razzano, M., Sgro, C., Spandre, G., Spinelli, P., Takahashi, H., Takeuchi, Y., Tanaka, Y., G. Thayer, J., B. Thayer, J., J. Thompson, D., Tibaldo, L., Tinivella, M., Tosti, G., Troja, E., Tronconi, V., Vandenbroucke, J., Vasileiou, V., Vianello, G., Vitale, V., Werner, M., S. Wood, K., Wood, M., Yang, Z., Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire Univers et Particules de Montpellier (LUPM), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Istituto Nazionale di Fisica Nucleare, sezione di Bari (INFN, sezione di Bari), Istituto Nazionale di Fisica Nucleare (INFN), IEEC-CSIC, Universitat Autònoma de Barcelona (UAB), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Fermi-LAT
Subjects: [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics::High Energy Astrophysical Phenomena, Physics::Space Physics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract: We present the detections of 19 solar flares detected in high-energy gamma rays (above 100 MeV) with the Fermi Large Area Telescope (LAT) during its first four years of operation. Interestingly, all flares are associated with fairly fast Coronal Mass Ejections (CMEs) and are not all powerful X-ray flares. We then describe the detailed temporal, spatial and spectral characteristics of the first two long-lasting events: the 2011 March 7 flare, a moderate (M3.7) impulsive flare followed by slowly varying gamma-ray emission over 13 hours, and the 2011 June 7 M2.5 flare, which was followed by gamma-ray emission lasting for 2 hours. We compare the Fermi-LAT data with X-ray and proton data measurements from GOES and RHESSI. We argue that a hadronic origin of the gamma rays is more likely than a leptonic origin and find that the energy spectrum of the proton distribution softens after the 2011 March 7 flare, favoring a scenario with continuous acceleration at the flare site. This work suggests that proton acceleration in solar flares is more common than previously thought, occurring for even modest X-ray flares, and for longer durations., Comment: Contact authors: A. Allafort, N. Giglietto, N. Omodei, V. Petrosian, Y. Tanaka. 14 pages, 5 figures, 4 tables. Submitted to Astrophysical Journal
Published: 2013

15. Fermi-LAT Observations of Two Gamma-Ray Emission Components from the Quiescent Sun

Author: A. Abdo, A., Ackermann, Markus, Ajello, Marco, Baldini, Luca, Ballet, Jean, Barbiellini, Guido, Bastieri, D., Bechtol, K., Bellazzini, R., Berenji, B., Bonamente, E., W. Borgland, A., Bouvier, A., Bregeon, J., Brez, A., Brigida, M., Bruel, Pascal, Buehler, R., Buson, S., A. Caliandro, G., A. Cameron, R., Caraveo, P. A., M. Casandjian, J., Cecchi, C., Charles, E., Chekhtman, A., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Conrad, J., Cutini, S., De Angelis, A., De Palma, F., D. Dermer, C., W. Digel, S., Do Couto E Silva, E., S. Drell, P., Dubois, R., Favuzzi, C., J. Fegan, S., B. Focke, W., Fortin, P., Frailis, M., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giglietto, N., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., A. Grenier, I., Grillo, L., Guiriec, S., Hadasch, D., Hays, E., E. Hughes, R., Iafrate, G., Jóhannesson, G., S. Johnson, A., J. Johnson, T., Kamae, T., Katagiri, H., Kataoka, J., Knödlseder, Jürgen, Kuss, M., Lande, J., Latronico, L., Lee, S.-H., M. Lionetto, A., Longo, F., Loparco, F., Lott, B., N. Lovellette, M., Lubrano, P., Makeev, A., N. Mazziotta, M., E. Mcenery, J., Mehault, J., F. Michelson, P., Mitthumsiri, W., Mizuno, T., A. Moiseev, A., Monte, C., E. Monzani, M., Morselli, A., V. Moskalenko, I., Murgia, S., Nakamori, T., Naumann-Godo, M., L. Nolan, P., P. Norris, J., Nuss, E., Ohsugi, T., Okumura, A., Omodei, N., Orlando, E., F. Ormes, J., Ozaki, M., Paneque, D., Pelassa, V., Pesce-Rollins, M., Pierbattista, M., Piron, F., Porter, T.A., Rainò, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Ritz, S., F.-W. Sadrozinski, H., L. Schalk, T., Sgrò, C., H. Share, G., J. Siskind, E., D. Smith, P., Spandre, G., Spinelli, P., S. Strickman, M., W. Strong, A., Takahashi, H., Tanaka, T., G. Thayer, J., B. Thayer, J., J. Thompson, D., Tibaldo, L., F. Torres, D., Tosti, G., Tramacere, A., Troja, E., Uchiyama, Y., L. Usher, T., Vandenbroucke, J., Vasileiou, V., Vianello, G., Vilchez, N., Vitale, V., E. Vladimirov, A., P. Waite, A., Wang, P., L. Winer, B., S. Wood, K., Yang, Z., Ziegler, M., Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire Univers et Particules de Montpellier (LUPM), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Fermi-LAT, Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], 96.60.Tf Solar electromagnetic radiation 96.60.Vg Particle emission, solar wind 96.60.P- Corona 96.50.sb Composition, energy spectra and interactions 96.60.qe Flares, [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], Astrophysics::High Energy Astrophysical Phenomena, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, gamma rays: general, [PHYS.ASTR.SR]Physics [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], gamma rays, Astrophysics - Solar and Stellar Astrophysics, cosmic rays, astroparticle physics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Sun: heliosphere, Astrophysics - High Energy Astrophysical Phenomena, Sun: X-rays, Solar and Stellar Astrophysics (astro-ph.SR), Astrophysics::Galaxy Astrophysics, Sun: atmosphere
Abstract: We report the detection of high-energy gamma rays from the quiescent Sun with the Large Area Telescope (LAT) on board the Fermi Gamma-Ray Space Telescope (Fermi) during the first 18 months of the mission. These observations correspond to the recent period of low solar activity when the emission induced by cosmic rays is brightest. For the first time, the high statistical significance of the observations allows clear separation of the two components: the point-like emission from the solar disk due to cosmic ray cascades in the solar atmosphere, and extended emission from the inverse Compton scattering of cosmic ray electrons on solar photons in the heliosphere. The observed integral flux (>100 MeV) from the solar disk is (4.6 +/- 0.2 [statistical error] +1.0/-0.8 [systematic error]) x10^{-7} cm^{-2} s^{-1}, which is ~7 times higher than predicted by the "nominal" model of Seckel et al. (1991). In contrast, the observed integral flux (>100 MeV) of the extended emission from a region of 20 deg radius centered on the Sun, but excluding the disk itself, (6.8 +/-0.7 [stat.] +0.5/-0.4 [syst.]) x10^{-7} cm^{-2} s^{-1}, along with the observed spectrum and the angular profile, are in good agreement with the theoretical predictions for the inverse Compton emission., The Astrophysical Journal, in press. Corresponding authors: Monica Brigida, Nicola Giglietto, Igor V. Moskalenko, Elena Orlando
Published: 2011

16. DETECTION OF HIGH-ENERGY GAMMA-RAY EMISSION DURING THE X-RAY FLARING ACTIVITY IN GRB 100728A

Author: A. Abdo, A., Ackermann, Markus, Ajello, Marco, Baldini, Luca, Ballet, Jean, Barbiellini, Guido, G. Baring, M., Bastieri, D., Bechtol, K., Bellazzini, R., Berenji, B., N. Bhat, P., Bissaldi, E., D. Blandford, R., Bonamente, E., Bonnell, J., W. Borgland, A., Bouvier, A., Bregeon, J., Brigida, M., Bruel, Pascal, Buehler, R., Buson8, S., A. Caliandro, G., A. Cameron, R., Caraveo, P. A., M. Casandjian, J., Cecchi, C., Charles, E., Chekhtman, A., Chiang, J., Ciprini, S., Claus, R., Connaughton, V., Conrad, J., Cutini, S., De Angelis, A., De Palma, F., D. Dermer, C., Do Couto, E., S. Drell, P., Dubois, R., Favuzzi, C., Fukazawa, Y., Fusco, P., Gargano, F., Gehrels, N., Germani, S., Giglietto, N., Giommi, P., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Granot, J., A. Grenier, I., Guiriec, S., Hadasch, D., Hanabata, Y., E. Hughes, R., J 'Ohannesson, G., S. Johnson, A., Kamae, T., Katagiri, H., Kataoka, J., Kerr, M., Knödlseder, Jürgen, Kuss, M., Lande, J., Latronico, L., Lee, S.-H., Longo, F., Loparco, F., Lott, B., Lubrano, P., N. Mazziotta, M., E. Mcenery, J., M'Esz'Aros, P., F. Michelson, P., Mizuno, T., A. Moiseev, A., E. Monzani, M., Morselli, A., V. Moskalenko, I., Murgia, S., Nakamori, T., Naumann-Godo, M., L. Nolan, P., P. Norris, J., Nuss, E., Ohsugi, T., Okumura, A., Omodei, N., Orlando, E., S. Paciesas, W., Pelassa, V., Pesce-Rollins, M., Pierbattista, M., Piron, F., Porter, T.A., L. Racusin, J., Rain'O, S., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., C. Reyes, L., Roth, M., F.-W. Sadrozinski, H., Sgr'O, C., J. Siskind, E., D. Smith, P., Sonbas, E., Spandre, G., Spinelli, P., Stamatikos, M., S. Strickman, M., Takahashi, H., Tanaka, T., Tanaka, Y., G. Thayer, J., B. Thayer, J., F. Torres, D., Tosti, G., Troja, E., Uehara, T., L. Usher, T., Vandenbroucke, J., Vasileiou, V., Vianello, G., Vilchez, N., Vitale, V., Von Kienlin, A., P. Waite, A., Wang, P., L. Winer, B., S. Wood, K., Yamazaki, R., Yang, Z., Ziegler, M., L. Piro, And, Silva, E., Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), GLAST, Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Univers et Particules de Montpellier (LUPM), Université de Montpellier (UM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de recherche en astrophysique et planétologie (IRAP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Abdo, A. A., Ackermann, M., Ajello, M., Baldini, L., Ballet, J., BARBIELLINI AMIDEI, Guido, Baring, M. G., Bastieri, D., Bechtol, K., Bellazzini, R., Berenji, B., Bhat, P. N., Bissaldi, Elisabetta, Blandford, R. D., Bonamente, E., Bonnell, J., Borgland, A. W., Bouvier, A., Bregeon, J., Brigida, M., Bruel, P., Buehler, R., Buson, S., Caliandro, G. A., Cameron, R. A., Caraveo, P. A., Casandjian, J. M., Cecchi, C., Charles, E., Chekhtman, A., Chiang, J., Ciprini, S., Claus, R., Connaughton, V., Conrad, J., Cutini, S., Angelis, A., Palma, F., Dermer, C. D., E. d. C., Drell, P. S., Dubois, R., Favuzzi, C., Fukazawa, Y., Fusco, P., Gargano, F., Gehrels, N., Germani, S., Giglietto, N., Giommi, P., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Granot, J., Grenier, I. A., Guiriec, S., Hadasch, D., Hanabata, Y., Hughes, R. E., Johannesson, G., Johnson, A. S., Kamae, T., Katagiri, H., Kataoka, J., Kerr, M., Kn\odlseder, J., Kuss, M., Lande, J., Latronico, L., Lee, S., Longo, Francesco, Loparco, F., Lott, B., Lubrano, P., Mazziotta, M. N., Mcenery, J. E., Meszaros, P., Michelson, P. F., Mizuno, T., Moiseev, A. A., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nakamori, T., Naumann Godo, M., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Okumura, A., Omodei, N., Orlando, E., Paciesas, W. S., Pelassa, V., Pesce Rollins, M., Pierbattista, M., Piron, F., Porter, T. A., Racusin, J. L., Rain\`o, S., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Reyes, L. C., Roth, M., Sadrozinski, H. F., Sgr\`o, C., Siskind, E. J., Smith, P. D., Sonbas, E., Spandre, G., Spinelli, P., Stamatikos, M., Strickman, M. S., Takahashi, H., Tanaka, T., Tanaka, Y., Thayer, J. G., Thayer, J. B., Torres, D. F., Tosti, G., Troja, E., Uehara, T., Usher, T. L., Vandenbroucke, J., Vasileiou, V., Vianello, G., Vilchez, N., Vitale, V., Kienlin, A., Waite, A. P., Wang, P., Winer, B. L., Wood, K. S., Yamazaki, R., Yang, Z., Ziegler, M., Piro, L., Collaboration, ., Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Montpellier 2 - Sciences et Techniques (UM2), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), and Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)
Subjects: High energy, [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, 7. Clean energy, gamma-ray burst: individual: GRB100728A, radiation mechanisms: non-thermal, 0103 physical sciences, gamma-ray burst: individual (GRB100728A), 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), 010308 nuclear & particles physics, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Gamma ray, X-ray, Astronomy and Astrophysics, non-thermal [radiation mechanisms], Afterglow, 13. Climate action, Space and Planetary Science, individual: GRB100728A [gamma-ray burst], Astrophysics - High Energy Astrophysical Phenomena, Fermi Gamma-ray Space Telescope
Abstract: We present the simultaneous Swift and Fermi observations of the bright GRB100728A and its afterglow. The early X-ray emission is dominated by a vigorous flaring activity continuing until 1 ks after the burst. In the same time interval high energy emission is significantly detected by the Fermi/LAT. Marginal evidence of GeV emission is observed up to later times. We discuss the broadband properties of this burst within both the internal and external shock scenarios, with a particular emphasis on the relation between X-ray flares, the GeV emission and a continued long-duration central engine activity as their power source., Comment: accepted for publication in ApJ Letters. Contact authors: E. Troja, L. Piro, V. Vasileiou, S. Cutini, J. E. McEnery
Published: 2011

17. Fermi Large Area Telescope Observations of Misaligned AGN

Author: A. ABDO, A., ACKERMANN, Markus, AJELLO, Marco, BALDINI, Luca, BALLET, Jean, BARBIELLINI, Guido, BASTIERI, D., BECHTOL, K., BELLAZZINI, R., BERENJI, B., D. BLANDFORD, R., D. BLOOM, E., BONAMENTE, E., W. BORGLAND, A., BOUVIER, A., J. BRANDT, T., BREGEON, J., BREZ, A., BRIGIDA, M., BRUEL, Pascal, BUEHLER, R., H. BURNETT, T., BUSON, S., A. CALIANDRO, G., A. CAMERON, R., CANNON, A., CARAVEO, P. A., CARRIGAN, S., M. CASANDJIAN, J., CAVAZZUTI, E., CECCHI, C., CELIK, O., CELOTTI, A., CHARLES, E., CHEKHTMAN, A., W. CHEN, A., C. CHEUNG, C., CHIANG, J., CIPRINI, S., CLAUS, R., COHEN-TANUGI, J., COLAFRANCESCO, S., CONRAD, J., S. DAVIS, D., D. DERMER, C., DE ANGELIS, A., DE PALMA, F., DO COUTO E SILVA, E., S. DRELL, P., DUBOIS, R., FAVUZZI, C., J. FEGAN, S., C. FERRARA, E., FORTIN, P., FRAILIS, M., FUKAZAWA, Y., FUSCO, P., GARGANO, F., GASPARRINI, D., GEHRELS, N., GERMANI, S., GIGLIETTO, N., GIOMMI, P., GIORDANO, F., GIROLETTI, M., GLANZMAN, T., GODFREY, G., GRANDI, P., A. GRENIER, I., E. GROVE, J., GUILLEMOT, L., GUIRIEC, S., HADASCH, D., HAYASHIDA, M., HAYS, E., HORAN, D., E. HUGHES, R., S. JACKSON, M., JOHANNESSON, G., S. JOHNSON, A., N. JOHNSON, W., KAMAE, T., KATAGIRI, H., KATAOKA, J., KNÖDLSEDER, Jürgen, KUSS, M., LANDE, J., LATRONICO, L., LEE, S.-H., LEMOINE-GOUMARD, M., LLENA GARDE, M., LONGO, F., LOPARCO, F., LOTT, B., N. LOVELLETTE, M., LUBRANO, P., M. MADEJSKI, G., MAKEEV, A., MALAGUTI, G., N. MAZZIOTTA, M., MCCONVILLE, W., E. MCENERY, J., F. MICHELSON, P., MIGLIORI, G., MITTHUMSIRI, W., MIZUNO, T., MONTE, C., E. MONZANI, M., MORSELLI, A., V. MOSKALENKO, I., MURGIA, S., NAUMANN-GODO, M., NESTORAS, I., L. NOLAN, P., P. NORRIS, J., NUSS, E., OHSUGI, T., OKUMURA, A., OMODEI, N., ORLANDO, E., F. ORMES, J., PANEQUE, D., H. PANETTA, J., PARENT, D., PELASSA, V., PEPE, M., PERSIC, M., PESCE-ROLLINS, M., PIRON, F., PORTER, T.A., RAINO, S., RANDO, R., RAZZANO, M., RAZZAQUE, S., REIMER, A., REIMER, O., C. REYES, L., ROTH, M., F.-W. SADROZINSKI, H., SANCHEZ, D., SANDER, A., D. SCARGLE, J., SGRO, C., J. SISKIND, E., D. SMITH, P., SPANDRE, G., SPINELLI, P., STAWARZ, Ł., W. STECKER, F., S. STRICKMAN, M., J. SUSON, D., TAKAHASHI, H., TANAKA, T., B. THAYER, J., G. THAYER, J., J. THOMPSON, D., TIBALDO, L., F. TORRES, D., TORRESI, E., TOSTI, G., TRAMACERE, A., UCHIYAMA, Y., L. USHER, T., VANDENBROUCKE, J., VASILEIOU, V., VILCHEZ, N., VILLATA, M., VITALE, V., P. WAITE, A., WANG, P., L. WINER, B., S. WOOD, K., YANG, Z., YLINEN, T., ZIEGLER, M., Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Fermi-LAT, Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics::High Energy Astrophysical Phenomena, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], galaxies: active, 98.54.Cm Active and peculiar galaxies and related systems (including BL Lacertae objects, blazars, Seyfert galaxies, Markarian galaxies, and active galactic nuclei) 98.54.Aj Quasars 95.85.Pw &ggr;-ray 98.62.Nx Jets and bursts, galactic, Astrophysics::Cosmology and Extragalactic Astrophysics, gamma rays: general, galaxies: jets, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics::Galaxy Astrophysics
Abstract: Analysis is presented on 15 months of data taken with the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope for 11 non-blazar AGNs, including 7 FRI radio galaxies and 4 FRII radio sources consisting of 2 FRII radio galaxies and 2 steep spectrum radio quasars. The broad line FRI radio galaxy 3C 120 is reported here as a gamma-ray source for the first time. The analysis is based on directional associations of LAT sources with radio sources in the 3CR, 3CRR and MS4 (collectively referred to as 3C-MS) catalogs. Seven of the eleven LAT sources associated with 3C-MS radio sources have spectral indices larger than 2.3 and, except for the FRI radio galaxy NGC 1275 that shows possible spectral curvature, are well described by a power law. No evidence for time variability is found for any sources other than NGC 1275. The gamma-ray luminosities of FRI radio galaxies are significantly smaller than those of BL Lac objects detected by the LAT, whereas the gamma-ray luminosities of FRII sources are quite similar to those of FSRQs, which could reflect different beaming factors for the gamma-ray emission. A core dominance study of the 3CRR sample indicate that sources closer to the jet axis are preferentially detected with the Fermi-LAT, insofar as the gamma-ray--detected misaligned AGNs have larger core dominance at a given average radio flux. The results are discussed in view of the AGN unification scenario., Comment: 28 pages, 8 figures, 2 tables. Accepted for publication in The Astrophysical Journal
Published: 2010

18. Fermi LAT Observations of the Supernova Remnant W28 (G6.4-0.1)

Author: A. Abdo, A., Ackermann, Markus, Ajello, Marco, Allafort, A., Baldini, Luca, Ballet, Jean, Barbiellini, Guido, Bastieri, D., Bechtol, K., Bellazzini, R., Berenji, B., D. Blandford, R., D. Bloom, E., Bonamente, E., W. Borgland, A., Bouvier, A., J. Brandt, T., Bregeon, J., Brigida, M., Bruel, Pascal, Buehler, R., Buson, S., A. Caliandro, G., A. Cameron, R., Caraveo, P. A., Carrigan, S., M. Casandjian, J., Cecchi, C., Chekhtman, A., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Conrad, J., D. Dermer, C., De Palma, F., Do Couto E Silva, E., S. Drell, P., Dubois, R., Dumora, D., Farnier, C., Favuzzi, C., J. Fegan, S., Fukazawa, Y., Fukui, Y., Funk, S., Fusco, P., Gargano, F., Gehrels, N., Germani, S., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., A. Grenier, I., E. Grove, J., Guiriec, S., Hadasch, D., Hanabata, Y., K. Harding, A., Hays, E., Horan, D., E. Hughes, R., Johannesson, G., S. Johnson, A., N. Johnson, W., Kamae, T., Katagiri, H., Kataoka, J., Knodlseder, J., Kuss, M., Lande, J., Latronico, L., Lee, S.-H., Lemoine-Goumard, M., Llena Garde, M., Longo, F., Loparco, F., N. Lovellette, M., Lubrano, P., Makeev, A., N. Mazziotta, M., F. Michelson, P., Mitthumsiri, W., Mizuno, T., A. Moiseev, A., Monte, C., E. Monzani, M., Morselli, A., V. Moskalenko, I., Murgia, S., Nakamori, T., L. Nolan, P., P. Norris, J., Nuss, E., Ohno, M., Ohsugi, T., Omodei, N., Orlando, E., F. Ormes, J., Ozaki, M., H. Panetta, J., Parent, D., Pelassa, V., Pepe, M., Pesce-Rollins, M., Piron, F., Porter, T.A., Raino, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Y. Rodriguez, A., Roth, M., F.-W. Sadrozinski, H., Sander, A., M. Saz Parkinson, P., Sgro, C., J. Siskind, E., Smith, David Stanley, D. Smith, P., Spandre, G., Spinelli, P., S. Strickman, M., J. Suson, D., Tajima, H., Takahashi, H., Takahashi, T., Tanaka, T., B. Thayer, J., G. Thayer, J., J. Thompson, D., Tibaldo, L., Tibolla, O., F. Torres, D., Tosti, G., Uchiyama, Y., Uehara, T., L. Usher, T., Vasileiou, V., Vilchez, N., Vitale, V., P. Waite, A., Wang, P., L. Winer, B., S. Wood, K., Yamamoto, H., Yamazaki, R., Yang, Z., Ylinen, T., Ziegler, M., Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Fermi-LAT, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics::High Energy Astrophysical Phenomena, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], High Energy Physics::Experiment, 98.58.Mj Supernova remnants 98.58.Db Molecular clouds, H2 clouds, dense clouds, and dark clouds 95.30.Ky Atomic and molecular data, spectra, and spectral parameters (opacities, rotation constants, line identification, oscillator strengths, g, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics::Galaxy Astrophysics
Abstract: We present detailed analysis of the two gamma-ray sources,1FGL J1801.3-2322c and 1FGL J1800.5-2359c,that have been found toward the supernova remnant(SNR) W28 with the Large Area Telescope(LAT) on board the Fermi Gamma-ray Space Telescope.1FGL J1801.3-2322c is found to be an extended source within the boundary of SNR W28,and to extensively overlap with the TeV gamma-ray source HESS J1801-233,which is associated with a dense molecular cloud interacting with the supernova remnant.The gamma-ray spectrum measured with LAT from 0.2--100 GeV can be described by a broken power-law function with a break of ~1GeV,and photon indices of 2.09$\pm$0.08(stat)$\pm$0.28(sys) below the break and 2.74$\pm$0.06(stat)$\pm$0.09(sys) above the break.Given the clear association between HESS J1801-233 and the shocked molecular cloud and a smoothly connected spectrum in the GeV--TeV band,we consider the origin of the gamma-ray emission in both GeV and TeV ranges to be the interaction between particles accelerated in the SNR and the molecular cloud.The decay of neutral pions produced in interactions between accelerated hadrons and dense molecular gas provide a reasonable explanation for the broadband gamma-ray spectrum. 1FGL J1800.5-2359c, located outside the southern boundary of SNR W28, cannot be resolved.An upper limit on the size of the gamma-ray emission was estimated to be ~16$'$ using events above ~2GeV under the assumption of a circular shape with uniform surface brightness. It appears to coincide with the TeV source HESS J1800-240B,which is considered to be associated with a dense molecular cloud that contains the ultra compact HII region W28A2(G5.89-0.39).We found no significant gamma-ray emission in the LAT energy band at the positions of TeV sources HESS J1800-230A and HESS J1800-230C.The LAT data for HESS J1800-230A combined with the TeV data points indicate a spectral break between 10GeV and 100GeV., Comment: 23 pages, 6 figures. Accepted for publication in the Astrophysical Journal. Corresponding authors: H. Katagiri, H. Tajima, T. Tanaka, and Y. Uchiyama
Published: 2010

19. Discovery of Pulsed $\gamma$-rays from PSR J0034-0534 with the Fermi LAT: A Case for Co-located Radio and $\gamma$-ray Emission Regions

Author: A. Abdo, A., Ackermann, Markus, Ajello, Marco, Allafort, A., Baldini, Luca, Ballet, Jean, Barbiellini, Guido, Bastieri, D., Bechtol, K., Bellazzini, R., Berenji, B., D. Blandford, R., D. Bloom, E., Bonamente, E., W. Borgland, A., Bouvier, A., Bregeon, J., Brez, A., Brigida, M., Bruel, Pascal, H. Burnett, T., Buson, S., A. Caliandro, G., A. Cameron, R., Camilo, F., Caraveo, P. A., Carrigan, S., M. Casandjian, J., Cecchi, C., Celik, O., Chekhtman, A., C. Cheung, C., Chiang, J., Ciprini, S., Claus, R., Cognard, Ismaël, Cohen-Tanugi, J., Conrad, J., Corbet, R., E. Decesar, M., D. Dermer, C., Desvignes, G., De Angelis, A., De Palma, F., W. Digel, S., Dormody, M., Do Couto E Silva, E., S. Drell, P., Dubois, R., Dumora, D., Espinoza, C., Farnier, C., Favuzzi, C., J. Fegan, S., B. Focke, W., Frailis, M., C. C. Freire, P., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giavitto, G., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., A. Grenier, I., Grondin, M.-H., E. Grove, J., Guillemot, L., Guiriec, S., Hadasch, D., K. Harding, A., Hays, E., Hobbs, G., Horan, D., E. Hughes, R., Johannesson, G., S. Johnson, A., J. Johnson, T., N. Johnson, W., Johnston, S., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kerr, M., Knödlseder, Jürgen, Kramer, M., Kuss, M., Lande, J., Latronico, L., Lemoine-Goumard, M., Llena Garde, M., Longo, F., Loparco, F., Lott, B., N. Lovellette, M., Lubrano, P., G. Lyne, A., Makeev, A., N. Manchester, R., Marelli, M., N. Mazziotta, M., Mcconville, W., E. Mcenery, J., Mcglynn, S., Meurer, C., F. Michelson, P., Mitthumsiri, W., Mizuno, T., A. Moiseev, A., Monte, C., E. Monzani, M., Morselli, A., V. Moskalenko, I., Murgia, S., L. Nolan, P., P. Norris, J., Noutsos, A., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., F. Ormes, J., Ozaki, M., Paneque, D., H. Panetta, J., Parent, D., Pelassa, V., Pepe, M., Pesce-Rollins, M., Pierbattista, M., Piron, F., Porter, T.A., Raino, S., Rando, R., M. Ransom, S., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Ripken, J., Ritz, S., S. Rochester, L., Y. Rodriguez, A., W. Romani, R., Roth, M., Ryde, F., F.-W. Sadrozinski, H., Sander, A., M. Saz Parkinson, P., D. Scargle, J., Sgro, C., J. Siskind, E., Smith, David Stanley, D. Smith, P., Spandre, G., Spinelli, P., W. Stappers, B., Starck, Jean-Luc, S. Strickman, M., J. Suson, D., Takahashi, H., Tanaka, T., B. Thayer, J., G. Thayer, J., Theureau, G., J. Thompson, D., E. Thorsett, S., Tibaldo, L., F. Torres, D., Tosti, G., Tramacere, A., L. Usher, T., Van Etten, A., Vasileiou, V., Venter, C., Vilchez, N., Vitale, V., P. Waite, A., Wallace, E., Wang, P., Weltevrede, P., L. Winer, B., S. Wood, K., Ylinen, T., Ziegler, M., Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique et chimie de l'environnement (LPCE), Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), and Université Fédérale Toulouse Midi-Pyrénées
Subjects: [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], pulsars: individual (PSR J0034−0534), Astrophysics::High Energy Astrophysical Phenomena, pulsars: general, gamma rays: general, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Astrophysics of Galaxies
Abstract: Millisecond pulsars (MSPs) have been firmly established as a class of gamma-ray emitters via the detection of pulsations above 0.1 GeV from eight MSPs by the Fermi Large Area Telescope (LAT). Using thirteen months of LAT data significant gamma-ray pulsations at the radio period have been detected from the MSP PSR J0034-0534, making it the ninth clear MSP detection by the LAT. The gamma-ray light curve shows two peaks separated by 0.274$\pm$0.015 in phase which are very nearly aligned with the radio peaks, a phenomenon seen only in the Crab pulsar until now. The $\geq$0.1 GeV spectrum of this pulsar is well fit by an exponentially cutoff power law with a cutoff energy of 1.8$\pm 0.6\pm$0.1 GeV and a photon index of 1.5$\pm 0.2\pm$0.1, first errors are statistical and second are systematic. The near-alignment of the radio and gamma-ray peaks strongly suggests that the radio and gamma-ray emission regions are co-located and both are the result of caustic formation., Comment: 20 pages, 3 figures, 2 tables. Accepted for publication in ApJ
Published: 2010

20. Fermi detection of delayed GeV emission from the short GRB 081024B

Author: A. Abdo, A., Ackermann, Markus, Ajello, Marco, Asano, K., B. Atwood, W., Axelsson, Magnus, Baldini, Luca, Ballet, Jean, Barbiellini, Guido, Bastieri, D., M. Baughman, B., Bechtol, K., Bellazzini, R., Berenji, B., N. Bhat, P., Bissaldi, E., D. Blandford, R., D. Bloom, E., Bonamente, E., W. Borgland, A., Bouvier, A., Bregeon, J., Brez, A., S. Briggs, M., Brigida, M., Bruel, Pascal, M. Burgess, J., H. Burnett, T., Buson, S., A. Caliandro, G., A. Cameron, R., Caraveo, P. A., Carrigan, S., M. Casandjian, J., Cecchi, C., Celik, O., Chaplin, V., Charles, E., Chekhtman, A., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., R. Cominsky, L., Connaughton, V., Conrad, J., Cutini, S., D. Dermer, C., de Angelis, A., de Palma, F., W. Digel, S., Do Couto E Silva, E., S. Drell, P., Dubois, R., Dumora, D., Farnier, C., Favuzzi, C., J. Fegan, S., Fishman, G., B. Focke, W., Fortin, P., Frailis, M., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giommi, P., Giordano, F., Glanzman, T., Godfrey, G., Granot, J., A. Grenier, I., Grondin, M.-H., E. Grove, J., Guillemot, L., Guiriec, S., Hanabata, Y., K. Harding, A., Hayashida, M., H. Haynes, R., Hays, E., Horan, D., E. Hughes, R., S. Jackson, M., Johannesson, G., S. Johnson, A., N. Johnson, W., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kerr, M., M. Kippen, R., Knödlseder, Jürgen, Kocevski, D., L. Kocian, M., Komin, N., Kouveliotou, C., Kuehn, F., Kuss, M., Lande, J., Latronico, L., Lemoine-Goumard, M., Longo, F., Loparco, F., Lott, B., N. Lovellette, M., Lubrano, P., M. Madejski, G., Makeev, A., N. Mazziotta, M., Mcbreen, S., E. Mcenery, J., Mcglynn, S., Meegan, C., Meszaros, P., Meurer, C., F. Michelson, P., Mitthumsiri, W., Mizuno, T., A. Moiseev, A., Monte, C., E. Monzani, M., Moretti, E., Morselli, A., V. Moskalenko, I., Murgia, S., Nakamori, T., L. Nolan, P., P. Norris, J., Nuss, E., Ohno, M., Ohsugi, T., Omodei, N., Orlando, E., F. Ormes, J., S. Paciesas, W., Paneque, D., H. Panetta, J., Parent, D., Pelassa, V., Pepe, M., Pesce-Rollins, M., Piron, F., Porter, T.A., Preece, R., Raino, S., Rando, R., Razzano, M., Razzaque, S., Reimer, A., Reimer, O., Reposeur, T., Ripken, J., Ritz, S., S. Rochester, L., Y. Rodriguez, A., Roth, M., Ryde, F., F.-W. Sadrozinski, H., Sanchez, D., Sander, A., M. Saz Parkinson, P., D. Scargle, J., L. Schalk, T., Sgro, C., J. Siskind, E., Smith, David Stanley, D. Smith, P., Spandre, G., Spinelli, P., Stamatikos, M., S. Strickman, M., J. Suson, D., Tagliaferri, G., Tajima, H., Takahashi, H., Tanaka, T., B. Thayer, J., G. Thayer, J., J. Thompson, D., Tibaldo, L., Toma, K., F. Torres, D., Tosti, G., Tramacere, A., Troja, E., Uchiyama, Y., L. Usher, T., J. van Der Horst, A., Vasileiou, V., Vilchez, N., Vitale, V., von Kienlin, A., P. Waite, A., Wang, P., Wilson-Hodge, C., L. Winer, B., S. Wood, K., F. Wu, X., Yamazaki, R., Ylinen, T., Ziegler, M., Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Fermi GBM, Fermi-LAT, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics::Galaxy Astrophysics
Abstract: We report on the detailed analysis of the high-energy extended emission from the short Gamma-Ray Burst (GRB) 081024B, detected by the Fermi Gamma-ray Space Telescope. Historically, this represents the first clear detection of temporal extended emission from a short GRB. The light curve observed by the Fermi Gamma-ray Burst Monitor lasts approximately 0.8 seconds whereas the emission in the Fermi Large Area Telescope lasts for about 3 seconds. Evidence of longer lasting high-energy emission associated with long bursts has been already reported by previous experiments. Our observations, together with the earlier reported study of the bright short GRB 090510, indicate similarities in the high-energy emission of short and long GRBs and open the path to new interpretations., 19 pages, 4 figures, 2 tables. Accepted for publication in ApJ
Published: 2010

21. Fermi LAT detection of pulsed $\gamma$-rays from the Vela-like pulsars PSR J1048-5832 and PSR J2229+6114

Author: A. Abdo, A., Ackermann, Markus, Ajello, Marco, Atwood, William B., Axelsson, Magnus, Baldini, Luca, Ballet, Jean, Barbiellini, Guido, Baring, Matthew G., Bastieri, D., Baughman, B. M., Bechtol, K., Bellazzini, R., Berenji, B., Bloom, E.D., Bonamente, E., Borgland, A.W., Bregeon, J., Brez, A., Brigida, M., Bruel, Pascal, Caliandro, G. A., Cameron, R. A., Camilo, F., Caraveo, P. A., Casandjian, J.M., Cecchi, C., Chekhtman, A., Cheung, C.C., Chiang, J., Ciprini, S., Claus, R., Cognard, Ismaël, Cohen-Tanugi, J., Conrad, J., De Angelis, A., De Palma, F., Dormody, M., Silva, E.D.E., Drell, P.S., Dubois, R., Dumora, D., Farnier, C., Favuzzi, C., Frailis, M., Freire, P.C.C., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., Grenier, I.A., Grondin, M.H., Grove, J.E., Guillemot, L., Guiriec, S., Halpern, J. P., Hanabata, Y., Harding, A.K., Hayashida, M., Hays, E., Hobbs, G., Hugues, R.E., Johansson, G., Johnson, A. S., Johnson, R. P., Johnson, T. J., Johnson, W. N., Johnston, S., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kerr, M., Knödlseder, J., Kocian, M. L., Kramer, M., Kuehn, F., Kuss, M., Lande, J., Latronico, L., Lemoine-Goumard, M., Longo, F., Loparco, F., Lott, B., Lovellette, M.N., Lubrano, P., Lyne, A.G., Makeev, A., Manchester, R.N., Marelli, M., Mazziotta, M.N., Mcenery, J.E., Meurer, C., Michelson, P.F., Mitthumsiri, W., Mizuno, T., Moiseev, A.A., Monte, C., Monzani, M.E., Morselli, A., Moskalenko, I.V., Murgia, S., Nolan, P.L., Norris, J. P., Noutsos, A., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J.F., Ozaki, M., Paneque, D., Panetta, J.H., Parent, D., Pepe, M., Pesce-Rollins, M., Piron, F., Porter, T.A., Rainò, S., Rando, R., Ransom, S.M., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Rochester, L.S., Rodriguez, A.Y., Romani, R.W., Roth, M., Ryde, F., Sadrosinski, H.F-W., Sanchez, D., Sander, A., Saz Parkinson, P.M., Scargle, J.D., Sgrò, C., Siskind, E.J., Smith, D.A., Smith, P.D., Spandre, G., Spinelli, P., Stappers, B.W., Strickman, M.S., Suson, D.J., Tajima, H., Takahashi, H., Tanaka, T., Thayer, J.B., Thayer, J.G., Theureau, G., Thompson, D. J., Thorsett, S.E., Tibaldo, L., Torres, D.F., Tosti, G., Uchiyama, Y., Usher, T. L., Van Etten, A., Vilchez, N., Vitale, V., Waite, A. P., Wang, P., Wang, N., Watters, K., Weltevrede, P., Winer, B. L., Wood, K.S., Ylinen, T., Ziegler, M., Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de physique et chimie de l'environnement (LPCE), Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Unité Scientifique de la Station de Nançay (USN), Centre National de la Recherche Scientifique (CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Fermi-LAT, Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Observatoire des Sciences de l'Univers en région Centre (OSUC), Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics of Galaxies (astro-ph.GA), pulsars: general, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], FOS: Physical sciences, PSr J222+6114), Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Astrophysics of Galaxies, gamma rays: observations, pulsars: individual (PSR J1048-5832
Abstract: We report the detection of gamma-ray pulsations (> 0.1 GeV) from PSR J2229+6114 and PSR J1048-5832, the latter having been detected as a low-significance pulsar by EGRET. Data in the gamma-ray band were acquired by the Large Area Telescope aboard the Fermi Gamma-ray Space Telescope, while the radio rotational ephemerides used to fold the gamma-ray light curves were obtained using the Green Bank Telescope, the Lovell telescope at Jodrell Bank, and the Parkes telescope. The two young radio pulsars, located within the error circles of the previously unidentified EGRET sources 3EG J1048-5840 and 3EG J2227+6122, present spin-down characteristics similar to the Vela pulsar. PSR J1048-5832 shows two sharp peaks at phases 0.15 \pm 0.01 and 0.57 \pm 0.01 relative to the radio pulse confirming the EGRET light curve, while PSR J2229+6114 presents a very broad peak at phase 0.49 \pm 0.01. The gamma-ray spectra above 0.1 GeV of both pulsars are fit with power laws having exponential cutoffs near 3 GeV, leading to integral photon fluxes of (2.19 \pm 0.22 \pm 0.32) x 10^{-7} cm^{-2} ^{-1} for PSR J1048-5832 and (3.77 \pm 0.22 \pm 0.44) x 10^{-7} cm^{-2} s^{-1} for PSR J2229+6114. The first uncertainty is statistical and the second is systematic. PSR J1048-5832 is one of two LAT sources which were entangled together as 3EG J1048-5840. These detections add to the growing number of young gamma-ray pulsars that make up the dominant population of GeV gamma-ray sources in the Galactic plane., 11 pages, 4 figures, 1 table. Accepted for publication in Astrophysical Journal. Contact authors: Alice K. Harding (ahardingx@yahoo.com), Damien Parent (parent@cenbg.in2p3.fr), Massimiliano Razzano (massimiliano.razzano@pi.infn.it)
Published: 2009

22. Pulsed Gamma-rays from PSR J2021+3651 with the Fermi Large Area Telescope

Author: Abdo, A.A., Ackermann, Markus, Ajello, Marco, B. Atwood, W., Baldini, Luca, Ballet, Jean, Barbiellini, Guido, Bastieri, D., Battelino, M., M. Baughman, B., Bechtol, K., Bellazzini, R., Berenji, B., D. Bloom, E., Bogaert, G., W. Borgland, A., Bregeon, J., Brez, A., Brigida, M., Bruel, Pascal, H. Burnett, T., A. Caliandro, G., A. Cameron, R., Camilo, F., Caraveo, P. A., M. Casandjian, J., Cecchi, C., Charles, E., Chekhtman, A., W. Chen, A., C. Cheung, C., Chiang, J., Ciprini, S., Cognard, Ismaël, Cohen-Tanugi, J., R. Cominsky, L., Conrad, J., Cutini, S., Demorest, P., D. Dermer, C., De Angelis, A., De Luca, A., De Palma, F., W. Digel, S., Dormody, M., Do Couto E Silva, E., S. Drell, P., Dubois, R., Dumora, D., Espinoza, C., Farnier, C., Favuzzi, C., B. Focke, W., Frailis, M., C. C. Freire, P., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., A. Grenier, I., Grondin, M.-H., E. Grove, J., Guillemot, L., Guiriec, S., Hanabata, Y., K. Harding, A., Hayashida, M., Hays, E., E. Hughes, R., Johannesson, G., S. Johnson, A., P. Johnson, R., J. Johnson, T., N. Johnson, W., Johnston, S., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kerr, M., Kızıltan, B., Knodlseder, J., Komin, N., Kramer, M., Kuehn, F., Kuss, M., Lande, J., Latronico, L., Lee, S.-H., Lemoine-Goumard, M., Longo, F., Loparco, F., Lott, B., N. Lovellette, M., Lubrano, P., G. Lyne, A., Makeev, A., N. Manchester, R., Marelli, M., N. Mazziotta, M., Mcconville, W., E. Mcenery, J., A. Mclaughlin, M., Meurer, C., F. Michelson, P., Mitthumsiri, W., Mizuno, T., A. Moiseev, A., Monte, C., E. Monzani, M., Morselli, A., V. Moskalenko, I., Murgia, S., L. Nolan, P., Noutsos, A., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., F. Ormes, J., Ozaki, M., Paneque, D., H. Panetta, J., Parent, D., Pepe, M., Pesce-Rollins, M., Piron, F., Porter, T.A., Raino, S., Rando, R., M. Ransom, S., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Ritz, S., S. Rochester, L., Y. Rodriguez, A., W. Romani, R., Ryde, F., F.-W. Sadrozinski, H., Sanchez, D., M. Saz Parkinson, P., Sgro, C., Sierpowska-Bartosik, A., J. Siskind, E., Smith, David Stanley, D. Smith, P., Spandre, G., Spinelli, P., W. Stappers, B., Starck, Jean-Luc, S. Strickman, M., J. Suson, D., Tajima, H., Takahashi, H., Takahashi, T., Tanaka, T., B. Thayer, J., G. Thayer, J., Theureau, Gilles, J. Thompson, D., E. Thorsett, S., Tibaldo, L., F. Torres, D., Tosti, G., Tramacere, A., Uchiyama, Y., L. Usher, T., Van Etten, A., Vilchez, N., Vitale, V., P. Waite, A., Wallace, E., Watters, K., Weltevrede, P., S. Wood, K., Ylinen, T., Ziegler, M., Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique et chimie de l'environnement (LPCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Fermi-LAT, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], [PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA], Astrophysics::High Energy Astrophysical Phenomena, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA]
Abstract: Accepted by the Astrophysical Journal, 25 May 2009; We report the detection of pulsed gamma-rays from the young, spin-powered radio pulsar PSR J2021+3651 using data acquired with the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope (formerly GLAST). The light curve consists of two narrow peaks of similar amplitude separated by 0.468 +/- 0.002 in phase. The first peak lags the maximum of the 2 GHz radio pulse by 0.162 +/- 0.004 +/- 0.01 in phase. The integral gamma-ray photon flux above 100 MeV is (56 +/- 3 +/- 11) x 10^{-8} /cm2/s. The photon spectrum is well-described by an exponentially cut-off power law of the form dF/dE = kE^{-\Gamma} e^(-E/E_c) where the energy E is expressed in GeV. The photon index is \Gamma = 1.5 +/- 0.1 +/- 0.1 and the exponential cut-off is E_c = 2.4 +/- 0.3 +/- 0.5 GeV. The first uncertainty is statistical and the second is systematic. The integral photon flux of the bridge is approximately 10% of the pulsed emission, and the upper limit on off-pulse gamma-ray emission from a putative pulsar wind nebula is
Published: 2009

23. Fermi/LAT discovery of gamma-ray emission from a relativistic jet in the narrow-line quasar PMN J0948+0022

Author: ABDO, A.A., ACKERMANN, Markus, AJELLO, Marco, AXELSSON, Magnus, BALDINI, Luca, BALLET, Jean, BARBIELLINI, Guido, BASTIERI, D., BATTELINO, M., M. BAUGHMAN, B., BECHTOL, K., BELLAZZINI, R., D. BLOOM, E., BONAMENTE, E., W. BORGLAND, A., BREGEON, J., BREZ, A., BRIGIDA, M., BRUEL, Pascal, A. CALIANDRO, G., A. CAMERON, R., CARAVEO, P. A., M. CASANDJIAN, J., CAVAZZUTI, E., CECCHI, C., CHEKHTMAN, A., C. CHEUNG, C., CHIANG, J., CIPRINI, S., CLAUS, R., COHEN-TANUGI, J., COLLMAR, W., CONRAD, J., COSTAMANTE, L., D. DERMER, C., DE ANGELIS, A., DE PALMA, F., W. DIGEL, S., DO COUTO E SILVA, E., S. DRELL, P., DUBOIS, R., DUMORA, D., FARNIER, C., FAVUZZI, C., B. FOCKE, W., FOSCHINI, L., FRAILIS, M., FUHRMANN, L., FUKAZAWA, Y., FUNK, S., FUSCO, P., GARGANO, F., GEHRELS, N., GERMANI, S., GIEBELS, B., GIGLIETTO, N., GIORDANO, F., GIROLETTI, M., GLANZMAN, T., A. GRENIER, I., GRONDIN, M.-H., E. GROVE, J., GUILLEMOT, L., GUIRIEC, S., HANABATA, Y., K. HARDING, A., C. HARTMAN, R., HAYASHIDA, M., HAYS, E., E. HUGHES, R., JOHANNESSON, G., S. JOHNSON, A., P. JOHNSON, R., N. JOHNSON, W., KAMAE, T., KATAGIRI, H., KATAOKA, J., KERR, M., KNÖDLSEDER, Jürgen, KUEHN, F., KUSS, M., LANDE, J., LATRONICO, L., LEMOINE-GOUMARD, M., LONGO, F., LOPARCO, F., LOTT, B., N. LOVELLETTE, M., LUBRANO, P., M. MADEJSKI, G., MAKEEV, A., MAX-MOERBECK, W., N. MAZZIOTTA, M., MCCONVILLE, W., E. MCENERY, J., MEURER, C., F. MICHELSON, P., MITTHUMSIRI, W., MIZUNO, T., MONTE, C., E. MONZANI, M., MORSELLI, A., V. MOSKALENKO, I., MURGIA, S., L. NOLAN, P., P. NORRIS, J., NUSS, E., OHSUGI, T., OMODEI, N., ORLANDO, E., F. ORMES, J., PANEQUE, D., H. PANETTA, J., PARENT, D., PAVLIDOU, V., J. PEARSON, T., PEPE, M., PESCE-ROLLINS, M., PIRON, F., PORTER, T.A., RAINO, S., RANDO, R., RAZZANO, M., READHEAD, A., REIMER, A., REIMER, O., REPOSEUR, T., L. RICHARDS, J., RITZ, S., Y. RODRIGUEZ, A., W. ROMANI, R., RYDE, F., F.-W. SADROZINSKI, H., SAMBRUNA, R., SANCHEZ, D., SANDER, A., M. SAZ PARKINSON, P., D. SCARGLE, J., L. SCHALK, T., SGRO, C., SMITH, David Stanley, SPANDRE, G., SPINELLI, P., STARCK, Jean-Luc, STEVENSON, M., S. STRICKMAN, M., J. SUSON, D., TAGLIAFERRI, G., TAKAHASHI, H., TANAKA, T., G. THAYER, J., J. THOMPSON, D., TIBALDO, L., TIBOLLA, O., F. TORRES, D., TOSTI, G., TRAMACERE, A., UCHIYAMA, Y., L. USHER, T., VILCHEZ, N., VITALE, V., P. WAITE, A., L. WINER, B., S. WOOD, K., YLINEN, T., A. ZENSUS, J., ZIEGLER, M., GHISELLINI, G., MARASCHI, L., TAVECCHIO, F., ANGELAKIS, E., Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Fermi-LAT, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics::High Energy Astrophysical Phenomena, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We report the discovery by the Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope of high-energy gamma-ray emission from the peculiar quasar PMN J0948+0022 (z=0.5846). The optical spectrum of this object exhibits rather narrow Hbeta (FWHM(Hbeta) ~ 1500 km s^-1), weak forbidden lines and is therefore classified as a narrow-line type I quasar. This class of objects is thought to have relatively small black hole mass and to accrete at high Eddington ratio. The radio loudness and variability of the compact radio core indicates the presence of a relativistic jet. Quasi simultaneous radio-optical-X-ray and gamma-ray observations are presented. Both radio and gamma-ray emission (observed over 5-months) are strongly variable. The simultaneous optical and X-ray data from Swift show a blue continuum attributed to the accretion disk and a hard X-ray spectrum attributed to the jet. The resulting broad band spectral energy distribution (SED) and, in particular, the gamma-ray spectrum measured by Fermi are similar to those of more powerful FSRQ. A comparison of the radio and gamma-ray characteristics of PMN J0948+0022 with the other blazars detected by LAT shows that this source has a relatively low radio and gamma-ray power, with respect to other FSRQ. The physical parameters obtained from modelling the SED also fall at the low power end of the FSRQ parameter region discussed in Celotti & Ghisellini (2008). We suggest that the similarity of the SED of PMN J0948+0022 to that of more massive and more powerful quasars can be understood in a scenario in which the SED properties depend on the Eddington ratio rather than on the absolute power., 10 pages, 5 figures, accepted for publication on ApJ Main Journal. Corresponding author: L. Foschini
Published: 2009

24. Fermi/LAT discovery of gamma-ray emission from the flat-spectrum radio quasar PKS 1454-354

Author: Abdo, A.A., Ackermann, Markus, B. Atwood, W., Axelsson, Magnus, Baldini, Luca, Ballet, Jean, Barbiellini, Guido, Bastieri, D., M. Baughman, B., Bechtol, K., Bellazzini, R., Berenji, B., D. Blandford, R., D. Bloom, E., Bogaert, G., Bonamente, E., W. Borgland, A., Bregeon, J., Brez, A., Brigida, M., Bruel, Pascal, H. Burnett, T., A. Caliandro, G., A. Cameron, R., Caraveo, P. A., M. Casandjian, J., Cavazzuti, E., Cecchi, C., Charles, E., Chekhtman, A., C. Cheung, C., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Colafrancesco, S., Conrad, J., Costamante, L., Cutini, S., D. Dermer, C., de Angelis, A., de Palma, F., W. Digel, S., Do Couto E Silva, E., S. Drell, P., Dubois, R., Dumora, D., Edmonds, Y., Farnier, C., Favuzzi, C., C. Ferrara, E., Fleury, P., B. Focke, W., Foschini, L., Frailis, M., Fuhrmann, L., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., A. Grenier, I., Grondin, M.-H., E. Grove, J., Guillemot, L., Guiriec, S., K. Harding, A., C. Hartman, R., Hayashida, M., Hays, E., E. Healey, S., E. Hughes, R., J'Ohannesson, G., S. Johnson, A., P. Johnson, R., N. Johnson, W., Kadler, M., Kamae, T., Katagiri, H., Kataoka, J., Kawai, N., Kerr, M., Knödlseder, Jürgen, L. Kocian, M., Kuehn, F., Kuss, M., Latronico, L., Lee, S.-H., Lemoine-Goumard, M., Longo, F., Loparco, F., Lott, B., N. Lovellette, M., Lubrano, P., M. Madejski, G., Makeev, A., Marelli, M., N. Mazziotta, M., E. Mcenery, J., Mcglynn, S., Meurer, C., F. Michelson, P., Mitthumsiri, W., Mizuno, T., A. Moiseev, A., Monte, C., E. Monzani, M., Morselli, A., V. Moskalenko, I., Murgia, S., L. Nolan, P., Nuss, E., Ohno, M., Ohsugi, T., Ojha, R., Omodei, N., Orlando, E., F. Ormes, J., Paneque, D., H. Panetta, J., Parent, D., Pepe, M., Pesce-Rollins, M., Piron, F., Porter, T.A., Rain'O, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., C. Reyes, L., Ritz, S., S. Rochester, L., Y. Rodriguez, A., W. Romani, R., Roth, M., Ryde, F., F.-W. Sadrozinski, H., Sambruna, R., Sanchez, D., Sander, A., M. Saz Parkinson, P., Sgr'O, C., S. Shaw, M., J. Siskind, E., Smith, David Stanley, D. Smith, P., Spandre, G., Spinelli, P., Starck, Jean-Luc, S. Strickman, M., J. Suson, D., Tajima, H., Takahashi, H., Tanaka, T., B. Thayer, J., G. Thayer, J., J. Thompson, D., Tibaldo, L., Tibolla, O., F. Torres, D., Tosti, G., Tramacere, A., L. Usher, T., Vilchez, N., Vitale, V., P. Waite, A., Wang, P., L. Winer, B., S. Wood, K., Ylinen, T., Ziegler, M., G. Edwards, P., M. Chester, M., N. Burrows, D., Hauser, M., Wagner, S., Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Fermi-LAT, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics::High Energy Astrophysical Phenomena, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], galaxies: active, FOS: Physical sciences, quasars: individual (PKS 1454-354), Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics::Galaxy Astrophysics, gamma rays: observations, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We report the discovery by the Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope of high-energy gamma-ray (GeV) emission from the flat-spectrum radio quasar PKS 1454-354 (z=1.424). On 4 September 2008 the source rose to a peak flux of (3.5 +/- 0.7)x 10^-6 ph cm^-2 s^-1 (E > 100 MeV) on a time scale of hours and then slowly dropped over the following two days. No significant spectral changes occurred during the flare. Fermi/LAT observations also showed that PKS 1454-354 is the most probable counterpart of the unidentified EGRET source 3EG J1500-3509. Multiwavelength measurements performed during the following days (7 September with Swift; 6-7 September with the ground-based optical telescope ATOM; 13 September with the Australia Telescope Compact Array) resulted in radio, optical, UV and X-ray fluxes greater than archival data, confirming the activity of PKS 1454-354., 8 pages, 5 figures, 2 tables. Accepted for publication on ApJ Main Journal
Published: 2009

25. Fermi LAT Observations of the Vela Pulsar

Author: Abdo, A.A., Ackermann, Markus, B. Atwood, W., Bagagli, R., Baldini, Luca, Ballet, Jean, L. Band, D., Barbiellini, Guido, G. Baring, M., Bartelt, J., Bastieri, D., M. Baughman, B., Bechtol, K., Bellardi, F., Bellazzini, R., Berenji, B., Bisello, D., D. Blandford, R., D. Bloom, E., R. Bogart, J., Bonamente, E., W. Borgland, A., Bouvier, A., Bregeon, J., Brez, A., Brigida, M., Bruel, Pascal, H. Burnett, T., A. Caliandro, G., A. Cameron, R., Camilo, F., Caraveo, P. A., M. Casandjian, J., Ceccanti, M., Cecchi, C., Charles, E., Chekhtman, A., C. Cheung, C., Chiang, J., Ciprini, S., Claus, R., Cognard, Ismaël, Cohen-Tanugi, J., R. Cominsky, L., Conrad, J., Corbet, R., Corucci, L., Cutini, S., S. Davis, D., DeKlotz, M., D. Dermer, C., De Angelis, A., De Palma, F., W. Digel, S., Dormody, M., Do Couto E Silva, E., S. Drell, P., Dubois, R., Dumora, D., Espinoza, C., Farnier, C., Favuzzi, C., L. Flath, D., Fleury, P., B. Focke, W., Frailis, M., C. C. Friere, P., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giannitrapani, R., Giebels, B., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., V. Gotthelf, E., A. Grenier, I., Grondin, M.-H., E. Grove, J., Guillemot, L., Guiriec, S., Haller, G., K. Harding, A., A. Hart, P., C. Hartman, R., Hays, E., Hobbs, G., E. Hughes, R., J'Ohannesson, G., S. Johnson, A., P. Johnson, R., J. Johnson, T., N. Johnson, W., Johnston, S., Kamae, T., Kanbach, G., M. Kaspi, V., Katagiri, H., Kataoka, J., Kavelaars, A., Kawai, N., Kelly, H., Kerr, M., Kiziltan, B., Klamra, W., Kn¨o Dlseder, J., Kramer, M., Kuehn, F., Kuss, M., Lande, J., Landriu, D., Latronico, L., Lee, B., Lee, S.-H., Lemoine-Goumard, M., Livingstone, M., Longo, F., Loparco, F., Lott, B., N. Lovellette, M., Lubrano, P., G. Lyne, A., M. Madejski, G., Makeev, A., N. Manchester, R., Marangelli, B., Marelli, M., N. Mazziotta, M., E. Mcenery, J., Mcglynn, S., A. Mclaughlin, M., Menon, N., Meurer, C., F. Michelson, P., Mineo, T., Mirizzi, N., Mitthumsiri, W., Mizuno, T., A. Moiseev, A., Mongelli, M., Monte, C., E. Monzani, M., Moretti, E., Morselli, A., V. Moskalenko, I., Murgia, S., Nakamori, T., L. Nolan, P., Noutsos, A., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., F. Ormes, J., Ozaki, M., Paccagnella, A., Paneque, D., H. Panetta, J., Parent, D., Pearce, M., Pepe, M., Perchiazzi, M., Pesce-Rollins, M., Pieri, L., Pinchera, M., Piron, F., Porter, T.A., Rain'O, S., Rando, R., M. Ransom, S., Rapposelli, E., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., C. Reyes, L., Ritz, S., S. Rochester, L., Y. Rodriguez, A., W. Romani, R., Roth, M., Ryde, F., Sacchetti, A., F.-W. Sadrozinski, H., Saggini, N., Sanchez, D., Sander, A., M. Saz Parkinson, P., N. Segal, K., Sellerholm, A., Sgr'O, C., J. Siskind, E., Smith, David Stanley, D. Smith, P., Spandre, G., Spinelli, P., Stamatikos, M., Starck, Jean-Luc, W. Stecker, F., E. Stephens, T., S. Strickman, M., W. Strong, A., J. Suson, D., Tajima, H., Takahashi, H., Takahashi, T., Tanaka, T., Tenze, A., B. Thayer, J., G. Thayer, J., Theureau, G., J. Thompson, D., E. Thorsett, S., Tibaldo, L., Tibolla, O., F. Torres, D., Tramacere, A., Turri, M., L. Usher, T., Vigiani, L., Vilchez, N., Vitale, V., P. Waite, A., Wang, P., Watters, K., Weltevrede, P., L. Winer, B., S. Wood, K., Ylinen, T., Ziegler, M., Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique et chimie de l'environnement (LPCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: The Vela pulsar is the brightest persistent source in the GeV sky and thus is the traditional first target for new gamma-ray observatories. We report here on initial Fermi Large Area Telescope observations during verification phase pointed exposure and early sky survey scanning. We have used the Vela signal to verify Fermi timing and angular resolution. The high quality pulse profile, with some 32,400 pulsed photons at E>0.03 GeV, shows new features, including pulse structure as fine as 0.3ms and a distinct third peak, which shifts in phase with energy. We examine the high energy behavior of the pulsed emission; initial spectra suggest a phase-averaged power law index of Gamma=1.51{+0.05/-0.04} with an exponential cut-off at E_c=2.9+/-0.1 GeV. Spectral fits with generalized cut-offs of the form e^{-(E/E_c)^b} require b, 12 pp, accepted for appearance in the Astrophysical Journal; R.W.Romani & M. Razzano, contact authors
Published: 2009

26. Measurement of the Cosmic Ray e(+)+e(-) Spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope

Author: Abdo, A.A., Ackermann, Markus, Ajello, Marco, B. Atwood, W., Axelsson, Magnus, Baldini, Luca, Ballet, Jean, Barbiellini, Guido, Bastieri, D., Battelino, M., Baughmann, B.M., Bechtol, K., Bellazzini, R., Berenji, B., Blandford, R. D., Bloom, E.D., Bogaert, G., Bonamente, E., Borgland, A.W., Bregeon, J., Brez, A., Brigida, M., Bruel, Pascal, Burnett, T.H., A.Caliandro, G., Cameron, R.A., Caraveo, P. A., Carlson, P., Casandjian, J.M., Cecchi, C., Charles, E., Chekhtman, A., Cheung, C.C., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Cominski, L.R., Conrad, J., Cutini, S., D. Dermer, C., De Angelis, A., De Palma, F., Digel, S.W., Di Bernardo, G., Silva, E.D.E., Drell, P.S., Dubois, R., Dumora, D., Edmonds, Y., Farnier, C., Favuzzi, C., Focke, W.B., Frailis, M., Fukazawa, Y., Funk, S., Fusco, P., Gaggero, D., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giordano, F., Glanzman, T., Godfrey, G., Grasso, D., Grenier, I.A., Grondin, M.-H., Grove, J.E., Guillemot, L., Guiriec, S., Hanabata, Y., Harding, A.K., Hartman, R.C., Hayashida, M., Hays, E., Hugues, R.E., Johannesson, G., Johnson, A.S., Johnson, R.P., Johnson, W.N., Kamae, T., Katagiri, H., Kataoka, J., Kerr, M., Knödlseder, Jürgen, Kocevski, D., Kuehn, F., Kuss, M., Lande, J., Latronico, L., Lemoine-Goumard, M., Longo, F., Loparco, F., Lott, B., Lovellette, M.N., Lubrano, P., Madejski, G. M., Makeev, A., Massai, M.M., Mazziotta, M.N., Mcconville, W., Mcenery, J.E., Meurer, C., Michelson, P.F., Mitthumsiri, W., Mizuno, T., Moiseev, A.A., Monte, C., Monzani, M.E., Moretti, E., Morselli, A., Moskalenko, I.V., Murgia, S., Nolan, P.L., Norris, J.P., Nuss, E., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J.F., Ozaki, M., Paneque, D., Panetta, J.H., Parent, D., Pelassa, V., Pepe, M., Pesce-Rollins, M., Piron, F., Pohl, M., Porter, T.A., Profumo, S., Rainò, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Reposeur, T., Ritz, S., Rochester, L. S., Rodriguez, A. Y., Romani, R.W., Roth, M., Ryde, F., Sadrosinski, H.F-W., Sanchez, D., Sander, A., Saz Parkinson, P.M., Scargle, J. D., Schalk, T. L., Sellerholm, A., Sgro, G., Smith, D. A., Smith, P. D., Spandre, G., Spinelli, P., Starck, Jean-Luc, Stephens, T. E., Strickman, M.S., Strong, A.W., Suson, D. J., Tajima, H., Takahashi, H., Takahashi, T., Tanaka, T., Thayer, J. G., Thompson, D.J., Tibaldo, L., Tibolla, O., Torres, D.F., Tosti, G., Tramacere, A., Uchiyama, Y., Usher, T. L., Van Etten, A., Vasileiou, V., Vilchez, N., Vitale, V., Waite, A. P., Wallace, E., Wang, P., Winer, B. L., Wood, K. S., Ylinen, T., Ziegler, M., Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Fermi-LAT, Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics::High Energy Astrophysical Phenomena, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], 96.50.sb, 95.35.+d, 95.85.Ry, 98.70.Sa
Abstract: Designed as a high-sensitivity gamma-ray observatory, the Fermi Large Area Telescope is also an electron detector with a large acceptance exceeding 2 m2 sr at 300 GeV. Building on the gamma-ray analysis, we have developed an efficient electron detection strategy which provides sufficient background rejection for measurement of the steeply falling electron spectrum up to 1 TeV. Our high precision data show that the electron spectrum falls with energy as E-3.0 and does not exhibit prominent spectral features. Interpretations in terms of a conventional diffusive model as well as a potential local extra component are briefly discussed.
Published: 2009

27. Radio-Loud Narrow-Line Seyfert 1 as a New Class of Gamma-Ray AGN

Author: A. ABDO, A., ACKERMANN, Markus, AJELLO, Marco, BALDINI, Luca, BALLET, Jean, BARBIELLINI, Guido, BASTIERI, D., BECHTOL, K., BELLAZZINI, R., BERENJI, B., BLOOM, E.D., BONAMENTE, E., BORGLAND, A.W., BREGEON, J., BREZ, A., BRIGIDA, M., BRUEL, Pascal, BURNETT, T.H., CALIANDRO, G.A., CAMERON, R.A., CARAVEO, P. A., CASANDJIAN, J.M., CECCHI, C., CELIK, O., CHEKHTMAN, A., CHEUNG, C. C., CHIANG, J., CIPRINI, S., CLAUS, R., COHEN-TANUGI, J., CONRAD, J., CUTINI, S., DERMER, C.D., DE PALMA, F., DO COUTO E SILVA, E., DRELL, P.S., DUBOIS, R., DUMORA, D., FARNIER, C., FAVUZZI, C., FEGAN, S.J., FOCKE, W.B., FOSCHINI, L., FRAILIS, M., FUKAZAWA, Y., FUSCO, P., GARGANO, F., GEHRELS, N., GERMANI, S., GIEBELS, B., GIGLIETTO, N., GIORDANO, F., GIROLETTI, M., GLANZMAN, T., GODFREY, G., GRENIER, I. A., GROVE, J.E., GUILLEMOT, L., GUIRIEC, S., HAYASHIDA, M., HAYS, E., HORAN, D., HUGUES, R.E., JÓHANNESSON, G., JOHNSON, A. S., JOHNSON, W. N., KADLER, M., KAMAE, T., KATAGIRI, H., KATAOKA, J., KERR, M., KNÖDLSEDER, Jürgen, KUSS, M., LANDE, J., LATRONICO, L., LONGO, F., LOPARCO, F., LOTT, B., LOVELLETTE, M. N., LUBRANO, P., MAKEEV, A., MAZZIOTTA, M.N., MCCONVILLE, W., MCENERY, J. E., MEURER, C., MICHELSON, P. F., MITTHUMSIRI, W., MIZUNO, T., MONTE, C., MONZANI, M. E., MORSELLI, A., MOSKALENKO, I. V., MURGIA, S., NOLAN, P.L., NORRIS, J.P., NUSS, E., OHSUGI, T., OMODEI, N., ORLANDO, E., ORMES, J. F., PELASSA, V., PEPE, M., PERSIC, M., PESCE-ROLLINS, M., PIRON, F., PORTER, T.A., RAINÒ, S., RANDO, R., RAZZANO, M., ROCHESTER, L. S., RODRIGUEZ, A. Y., RYDE, F., SADROZINSKI, H. F.-W., SAMBRUNA, R., SANDER, A., SAZ PARKINSON, P.M., SCARGLE, J. D., SGRÒ, C., SMITH, P. D., SPANDRE, G., SPINELLI, P., STRICKMAN, M.S., SUSON, D.J., TAGLIAFERRI, G., TAKAHASHI, H., TAKAHASHI, T., TANAKA, T., THAYER, J.B., THAYER, J.G., THOMPSON, D.J., TIBALDO, L., TIBOLLA, O., TORRES, D.F., TOSTI, G., TRAMACERE, A., UCHIYAMA, Y., USHER, T.L., VASILEIOU, V., VILCHEZ, N., VITALE, V., WAITE, A. P., WANG, P., WINER, B. L., WOOD, K.S., YLINEN, T., ZIEGLER, M., GHISELLINI, G., MARASCHI, L., TAVECCHIO, F., Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Fermi-LAT, Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), and Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Cosmology and Nongalactic Astrophysics (astro-ph.CO), quasars: general, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], galaxies: active, FOS: Physical sciences, Astrophysics - High Energy Astrophysical Phenomena, galaxies: Seyfert, gamma rays: observations, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract: We report the discovery with Fermi/LAT of gamma-ray emission from three radio-loud narrow-line Seyfert 1 galaxies: PKS 1502+036 (z=0.409), 1H 0323+342 (z=0.061) and PKS 2004-447 (z=0.24). In addition to PMN J0948+0022 (z=0.585), the first source of this type to be detected in gamma rays, they may form an emerging new class of gamma-ray active galactic nuclei (AGN). These findings can have strong implications on our knowledge about relativistic jets and the unified model of AGN., Comment: 16 pages, 1 figure. Accepted for publication on ApJ Letters. Corresponding author: Luigi Foschini
Published: 2009
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28. Bright AGN Source List from the First Three Months of the Fermi Large Area Telescope All-Sky Survey

Author: ABDO, Aous A., ACKERMANN, Markus, AJELLO, Marco, B. ATWOOD, W., AXELSSON, Magnus, BALDINI, Luca, BALLET, Jean, BARBIELLINI, Guido, BASTIERI, D., M. BAUGHMAN, B., BECHTOL, K., BELLAZZINI, R., D. BLANDFORD, R., D. BLOOM, E., BONAMENTE, E., W. BORGLAND, A., BREGEON, J., BREZ, A., BRIGIDA, M., BRUEL, Pascal, H. BURNETT, T., A. CALIANDRO, G., A. CAMERON, R., CARAVEO, P. A., M. CASANDJIAN, J., CAVAZZUTI, E., CECCHI, C., CHARLES, E., CHEKHTMAN, A., W. CHEN, A., C. CHEUNG, C., CHIANG, J., CIPRINI, S., CLAUS, R., COHEN-TANUGI, J., COLAFRANCESCO, S., COLLMAR, W., CONRAD, J., COSTAMANTE, L., CUTINI, S., D. DERMER, C., DE ANGELIS, A., DE PALMA, F., W. DIGEL, S., DO COUTO E SILVA, E., S. DRELL, P., DUBOIS, R., DUMORA, D., FARNIER, C., FAVUZZI, C., J. FEGAN, S., C. FERRARA, E., FINKE, J., B. FOCKE, W., FOSCHINI, L., FRAILIS, M., FUHRMANN, L., FUKAZAWA, Y., FUNK, S., FUSCO, P., GARGANO, F., GASPARRINI, D., GEHRELS, N., GERMANI, S., GIEBELS, B., GIGLIETTO, N., GIOMMI, P., GIORDANO, F., GIROLETTI, M., GLANZMAN, T., GODFREY, G., A. GRENIER, I., GRONDIN, M.-H., E. GROVE, J., GUILLEMOT, L., GUIRIEC, S., HANABATA, Y., K. HARDING, A., C. HARTMAN, R., HAYASHIDA, M., HAYS, E., E. HEALEY, S., HORAN, D., JO'HANNESSON, G., P. JOHNSON, R., J. JOHNSON, T., N. JOHNSON, W., KADLER, M., KAMAE, T., KATAGIRI, H., KATAOKA, J., KERR, M., KNÖDLSEDER, Jürgen, L. KOCIAN, M., KUEHN, F., KUSS, M., LANDE, J., LATRONICO, L., LEMOINE-GOUMARD, M., LONGO, F., LOPARCO, F., LOTT, B., N. LOVELLETTE, M., LUBRANO, P., M. MADEJSKI, G., MAKEEV, A., N. MAZZIOTTA, M., MCCONVILLE, W., E. MCENERY, J., MEURER, C., F. MICHELSON, P., MITTHUMSIRI, W., MIZUNO, T., A. MOISEEV, A., MONTE, C., E. MONZANI, M., MORSELLI, A., V. MOSKALENKO, I., MURGIA, S., L. NOLAN, P., P. NORRIS, J., NUSS, E., OHSUGI, T., OMODEI, N., ORLANDO, E., F. ORMES, J., PANEQUE, D., H. PANETTA, J., PARENT, D., PELASSA, V., PEPE, M., PESCE-ROLLINS, M., PIRON, F., PORTER, T.A., RAIN'O, S., RANDO, R., RAZZANO, M., RAZZAQUE, S., REIMER, A., REIMER, O., REPOSEUR, T., C. REYES, L., RITZ, S., Y. RODRIGUEZ, A., W. ROMANI, R., RYDE, F., F.-W. SADROZINSKI, H., SANCHEZ, D., SANDER, A., M. SAZ PARKINSON, P., D. SCARGLE, J., L. SCHALK, T., SELLERHOLM, A., SGRO', C., SHAW, M., SMITH, David Stanley, D. SMITH, P., SPANDRE, G., SPINELLI, P., STARCK, Jean-Luc, S. STRICKMAN, M., J. SUSON, D., TAJIMA, H., TAKAHASHI, H., TAKAHASHI, T., TANAKA, T., B. TAYLOR, G., B. THAYER, J., G. THAYER, J., J. THOMPSON, D., TIBALDO, L., F. TORRES, D., TOSTI, G., TRAMACERE, A., UCHIYAMA, Y., L. USHER, T., VILCHEZ, N., VILLATA, M., VITALE, V., P. WAITE, A., L. WINER, B., S. WOOD, K., YLINEN, T., ZIEGLER, M., Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre d'étude spatiale des rayonnements (CESR), Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE), [PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics::Galaxy Astrophysics
Abstract: The first three months of sky-survey operation with the Fermi Gamma Ray Space Telescope (Fermi) Large Area Telescope (LAT) reveals 132 bright sources at |b|>10 deg with test statistic greater than 100 (corresponding to about 10 sigma). Two methods, based on the CGRaBS, CRATES and BZCat catalogs, indicate high-confidence associations of 106 of these sources with known AGNs. This sample is referred to as the LAT Bright AGN Sample (LBAS). It contains two radio galaxies, namely Centaurus A and NGC 1275, and 104 blazars consisting of 57 flat spectrum radio quasars (FSRQs), 42 BL Lac objects, and 5 blazars with uncertain classification. Four new blazars were discovered on the basis of the LAT detections. Remarkably, the LBAS includes 10 high-energy peaked BL Lacs (HBLs), sources which were so far hard to detect in the GeV range. Another 10 lower-confidence associations are found. Only thirty three of the sources, plus two at |b|>10 deg, were previously detected with EGRET, probably due to the variable nature of these sources. The analysis of the gamma-ray properties of the LBAS sources reveals that the average GeV spectra of BL Lac objects are significantly harder than the spectra of FSRQs. No significant correlation between radio and peak gamma-ray fluxes is observed. Blazar log N - log S and luminosity functions are constructed to investigate the evolution of the different blazar classes, with positive evolution indicated for FSRQs but none for BLLacs. The contribution of LAT-blazars to the total extragalactic gamma-ray intensity is estimated., Submitted to ApJ. Not yet refereed. 61 pages, 26 figures
Published: 2009
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29. Erratum to 'Correlation of the highest-energy cosmic rays with the positions of nearby active galactic nuclei' [Astroparticle Physics 29(3) (2008) 188-204]

Author: Abraham, J., Abreu, P., Aglietta, M., Aguirre, C., Allard, D., Allekotte, I., Allen, J., Allison, P., Alvarez, C., Alvarez-Muniz, J., Ambrosio, M., Anchordoqui, L., Andringa, S., Anzalone, A., Aramo, C., Argiro, S., Arisaka, K., Armengaud, E., Arneodo, F., Arqueros, F., Asch, T., Asorey, H., Assis, P., Atulugama, B.S., Aublin, J., Ave, M., Avila, G., Bäcker, T., Badagnani, D., Barbosa, A.F., Barnhill, D., Barroso, S.L.C., Bauleo, P., Beatty, J., Beau, T., Becker, B.R., Becker, K.H., Bellido, J.A., Benzvi, S., Bérat, C., Bergmann, T., Bernardini, P., Bertou, X., Biermann, P.L., Billoir, P., Blanch-Bigas, O., Blanco, F., Blasi, P., Bleve, C., Blümer, H., Bohacova, M., Bonifazi, C., Bonino, R., Boratav, M., Brack, J., Brogueira, P., Brown, W.C., Buchholz, P., Bueno, A., Burton, R.E., Busca, N.G., Caballero-Mora, K.S., Cai, B., Camin, D.V., Caramete, L., Caruso, R., Carvalho, W., Castellina, A., Catalano, O., Cataldi, G., Cazon-Boado, L., Cester, R., Chauvin, J., Chiavassa, A., Chinellato, J.A., Chou, A., Chye, J., Clark, P.D.J., Clay, R.W., Colombo, E., Conceiçao, R., Connolly, B., Contreras, F., Coppens, J., Cordier, A., Cotti, U., Coutu, S., Covault, C.E., Creusot, A., Cronin, J., Curutiu, A., Dagoret-Campagne, S., Daumiller, K., Dawson, B.R., de Almeida, R.M., de Donato, C., de Jong, S.J., de La Vega, G., de Mello Junior, W.J.M., de Mello Neto, J.R.T., de Mitri, I., de Souza, V., del Peral, L., Deligny, O., Della Selva, A., Delle Fratte, C., Dembinski, H., Di Giulio, C., Diaz, J.C., Dobrigkeit, C., d'Olivo, J.C., Dornic, D., Dorofeev, A., dos Anjos, J.C., Dova, M.T., d'Urso, D., Dutan, I., Duvernois, M.A., Engel, R., Epele, L., Erdmann, M., Escobar, C.O., Etchegoyen, A., Facal San Luis, P., Falcke, H., Farrar, G., Fauth, A.C., Fazzini, N., Fernandez, Arnaud, Ferrer, F., Ferry, S., Fick, B., Filevich, A., Filipcic, A., Fleck, I., Fonte, R., Fracchiolla, C.E., Fulgione, W., Garc&#305a, B., Garc&#305a Gamez, D., Garcia-Pinto, D., Garrido, X., Geenen, H., Gelmini, G., Gemmeke, H., Ghia, P.L., Giller, M., Glass, H., Gold, M.S., Golup, G., Gomez Albarracin, F., Gomez, M., Gomez Herrero, R., Gonçalves, Paulo, Gonçalves Do Amaral, M., Gonzalez, D., Gonzalez, J.G., Gonzalez, M., Gora, D., Gorgi, A., Gouffon, P., Grassi, V., Grillo, A.F., Grunfeld, C., Guardincerri, Y., Guarino, F., Guedes, G.P., Gutiérrez, J., Hague, J.D., Hamilton, J.-C., Hansen, P., Harari, D., Harmsma, S., Harton, J.L., Haungs, A., Hauschildt, T., Healy, M.D., Hebbeker, T., Heck, D., Hojvat, C., Holmes, V.C., Homola, P., Hörandel, J., Horneffer, A., Horvat, M., Hrabovsky, M., Huege, T., Iarlori, M., Insolia, A., Ionita, F., Italiano, A., Kaducak, M., Kampert, K.H., Karova, T., Kégl, Balázs, Keilhauer, B., Kemp, E., Kieckhafer, R.M., Klages, H.O., Kleifges, M., Kleinfeller, J., Knapik, R., Knapp, J., Koang, D.H., Kopmann, A., Krieger, A., Krömer, O., Kümpel, D., Kunka, N., Kusenko, A., La Rosa, G., Lachaud, C., Lago, B.L., Lebrun, D., Lebrun, P., Lee, J., Leigui, M.A., Oliveira, De, Letessier-Selvon, A., Leuthold, M., Lhenry-Yvon, I., Lopez, R., Lopez, A., Lozano Bahilo, J., Maccarone, M.C., Macolino, C., Maldera, S., Malek, M., Mancarella, G., Mancenido, M.E., Mandat, D., Mantsch, P., Mariazzi, A.G., Maris, I.C., Martello, D., Mart&#305nez, J., Mart&#305nez Bravo, O., Mathes, H.J., Matthews, J., Matthews, J.A.J., Matthiae, G., Maurizio, D., Mazur, P.O., Mccauley, T., Mcewen, M., Mcneil, R.R., Medina, M.C., Medina-Tanco, G., Meli, A., Melo, D., Menichetti, E., Menschikov, A., Meurer, Chr., Meyhandan, R., Micheletti, M.I., Miele, G., Miller, W., Mollerach, S., Monasor, M., Monnier Ragaigne, D., Montanet, F., Morales, B., Morello, C., Moreno, E., Moreno, J.C., Morris, C., Mostafa, M., Muller, M.A., Mussa, R., Navarra, G., Navarro, J.L., Navas, S., Necesal, P., Nellen, L., Newman-Holmes, C., Newton, D., Nguyen Thi, T., Nierstenhöfer, N., Nitz, D., Nosek, D., Nozka, L., Oehlschläger, J., Ohnuki, T., Olinto, A., Olmos-Gilbaja, V.M., Ortiz, M., Ostapchenko, S., Otero, L., Pakk Selmi-Dei, D., Palatka, M., Pallotta, J., Parente, G., Parizot, E., Parlati, S., Pastor, S., Patel, M., Paul, T., Pavlidou, V., Payet, K., Pech, M., Pekala, J., Pelayo, R., Pepe, I.M., Perrone, L., Petrera, S., Petrinca, P., Petrov, Y., Pham Ngoc, Diep, Pham Ngoc, Dong, Pham Thi, T.N., Pichel, A., Piegaia, R., Pierog, T., Pimenta, M., Pinto, T., Pirronello, V., Pisanti, O., Platino, M., Pochon, J., Porter, T.A., Privitera, P., Prouza, M., Quel, E.J., Rautenberg, J., Reucroft, S., Revenu, Benoît, Rezende, F.A.S., R&#305dky, J., Riggi, S., Risse, M., Rivière, C., Rizi, V., Roberts, M., Robledo, C., Rodriguez, G., Rodr&#305guez Fr&#305as, D., Rodriguez Martino, J., Rodriguez, J., Rodriguez-Cabo, I., Ros, G., Rosado, J., Roth, M., Rouillé-d'Orfeuil, B., Roulet, E., Rovero, A.C., Salamida, F., Salazar, H., Salina, G., Sanchez, F., Santander, M., Santo, C.E., Santos, E.M., Sarazin, F., Sarkar, S., Sato, R., Scherini, V., Schieler, H., Schmidt, F., Schmidt, T., Scholten, O., Schovanek, P., Schüssler, F., Sciutto, S.J., Scuderi, M., Segreto, A., Semikoz, D.V., Settimo, M., Shellard, R.C., Sidelnik, I., Siffert, B.B., Sigl, G., Smetniansky de Grande, N., Smia&#322kowski, A., Sm&#305da, R., Smith, A.G.K., Smith, B.E., Snow, G.R., Sokolsky, P., Sommers, P., Sorokin, J., Spinka, H., Squartini, R., Strazzeri, E., Stutz, A., Suarez, F., Suomijärvi, T., Supanitsky, A.D., Sutherland, M.S., Swain, J., Szadkowski, Z., Takahashi, J., Tamashiro, A., Tamburro, A., Tascau, O., Tcaciuc, R., Thomas, D., Ticona, R., Tiffenberg, J., Timmermans, C., Tkaczyk, W., Todero Peixoto, C.J., Tomé, B., Tonachini D. Torresi, A., Travnicek, P., Tripathi, A., Tristram, G., Tscherniakhovski, D., Tueros, M., Tunnicliffe, V., Ulrich, R., Unger, M., Urban, Martin, Valdés Galicia, J.F., Valino, I., Valore, L., van den Berg, A.M., van Elewyck, V., Vazquez, R.A., Veberic, D., Veiga, A., Velarde, A., Venters, T., Verzi, V., Videla, M., Villasenor, L., Vorobiov, S., Voyvodic, L., Wainberg, O., Walker, P., Warner, D., Watson, A.A., Westerhoff, S., Wieczorek, G., Wiencke, L., Wilczynska, B., Wilczynski, H., Wileman, C., Winnick, M.G., Wu, H., Wundheiler, B., Xu, J., Yamamoto, T., Younk, P., Zas, E., Zavrtanik, D., Zavrtanik, M., Zech, A., Zepeda, A., Ziolkowski, M., APC - Astrophysique des Hautes Energies (APC - AHE), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire d'Orsay (IPNO), APC - THEORIE, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut für theoretische Physik, Universität Hamburg (UHH)-Universität Hamburg (UHH), PIERRE AUGER, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut für theoretische Physik, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Università di Bologna [Bologna] (UNIBO)-Università di Bologna [Bologna] (UNIBO), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut für theoretische Physik
Subjects: Astroparticle physics, Physics, Active galactic nucleus, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], 010308 nuclear & particles physics, [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astronomy and Astrophysics, Cosmic ray, Astrophysics, 01 natural sciences, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], 0103 physical sciences, Ultra-high-energy cosmic ray, 010306 general physics, Energy (signal processing)
Published: 2008

30. Anisotropy studies around the galactic centre at EeV energies with the Auger Observatory

Author: Abraham, J. Aglietta, M. Aguirre, C. Allard, D. Allekotte, I. Allison, P. Alvarez, C. Alvarez-Muñiz, J. Ambrosio, M. Anchordoqui, L. Anjos, J.C. Aramo, C. Arisaka, K. Armengaud, E. Arneodo, F. Arqueros, F. Asch, T. Asorey, H. Atulugama, B.S. Aublin, J. Ave, M. Avila, G. Bacelar, J. Bäcker, T. Badagnani, D. Barbosa, A.F. Barbosa, H.M.J. Barkhausen, M. Barnhill, D. Barroso, S.L.C. Bauleo, P. Beatty, J. Beau, T. Becker, B.R. Becker, K.H. Bellido, J.A. BenZvi, S. Berat, C. Bergmann, T. Bernardini, P. Bertou, X. Biermann, P.L. Billoir, P. Blanch-Bigas, O. Blanco, F. Blasi, P. Bleve, C. Blümer, H. Boghrat, P. Boháčová, M. Bonifazi, C. Bonino, R. Boratav, M. Brack, J. Brunet, J.M. Buchholz, P. Busca, N.G. Caballero-Mora, K.S. Cai, B. Camin, D.V. Capdevielle, J.N. Caruso, R. Castellina, A. Cataldi, G. Cazón, L. Cester, R. Chauvin, J. Chiavassa, A. Chinellato, J.A. Chou, A. Chye, J. Claes, D. Clark, P.D.J. Clay, R.W. Clay, S.B. Connolly, B. Cordier, A. Cotti, U. Coutu, S. Covault, C.E. Cronin, J. Dagoret-Campagne, S. Quang, T.D. Darriulat, P. Daumiller, K. Dawson, B.R. de Almeida, R.M. de Carvalho, L.A. De Donato, C. de Jong, S.J. de Mello Jr., W.J.M. de Mello Neto, J.R.T. De Mitri, I. de Oliveira, M.A.L. de Souza, V. del Peral, L. Deligny, O. Selva, A.D. Fratte, C.D. Dembinski, H. Di Giulio, C. Diaz, J.C. Dobrigkeit, C. D'Olivo, J.C. Dornic, D. Dorofeev, A. Dova, M.T. D'Urso, D. DuVernois, M.A. Engel, R. Epele, L. Erdmann, M. Escobar, C.O. Etchegoyen, A. Ewers, A. Facal San Luis, P. Falcke, H. Fauth, A.C. Fazio, D. Fazzini, N. Fernández, A. Ferrer, F. Ferry, S. Fick, B. Filevich, A. Filipčič, A. Fleck, I. Fokitis, E. Fonte, R. Fuhrmann, D. Fulgione, W. García, B. Garcia-Pinto, D. Garrard, L. Garrido, X. Geenen, H. Gelmini, G. Gemmeke, H. Geranios, A. Ghia, P.L. Giller, M. Gitto, J. Glass, H. Gobbi, F. Gold, M.S. Gomez Albarracin, F. Gómez Berisso, M. Gómez Herrero, R. Gonçalves do Amaral, M. Gongora, J.P. Gonzalez, D. Gonzalez, J.G. González, M. Góra, D. Gorgi, A. Gouffon, P. Grassi, V. Grillo, A. Grunfeld, C. Grupen, C. Guarino, F. Guedes, G.P. Gutiérrez, J. Hague, J.D. Hamilton, J.C. Harakeh, M.N. Harari, D. Harmsma, S. Hartmann, S. Harton, J.L. Haungs, A. Healy, M.D. Hebbeker, T. Heck, D. Hojvat, C. Homola, P. Hörandel, J. Horneffer, A. Horvat, M. Hrabovský, M. Huege, T. Iarlori, M. Insolia, A. Kaducak, M. Kalashev, O. Kampert, K.H. Keilhauer, B. Kemp, E. Klages, H.O. Kleifges, M. Kleinfeller, J. Knapik, R. Knapp, J. Koang, D.-H. Kolotaev, Y. Kopmann, A. Krömer, O. Kuhlman, S. Kuijpers, J. Kunka, N. Kusenko, A. Lachaud, C. Lago, B.L. Lebrun, D. LeBrun, P. Lee, J. Letessier-Selvon, A. Leuthold, M. Lhenry-Yvon, I. Longo, G. López, R. Lopez Agüera, A. Lucero, A. Maldera, S. Malek, M. Maltezos, S. Mancarella, G. Manceñido, M.E. Mandat, D. Mantsch, P. Mariazzi, A.G. Maris, I.C. Martello, D. Martinez, N. Martínez, J. Martínez, O. Mathes, H.J. Matthews, J. Matthews, J.A.J. Matthiae, G. Maurin, G. Maurizio, D. Mazur, P.O. McCauley, T. McEwen, M. McNeil, R.R. Medina, G. Medina, M.C. Medina Tanco, G. Meli, A. Melo, D. Menichetti, E. Menshikov, A. Meurer, Chr. Meyhandan, R. Micheletti, M.I. Miele, G. Miller, W. Mollerach, S. Monasor, M. Monnier Ragaigne, D. Montanet, F. Morales, B. Morello, C. Moreno, E. Morris, C. Mostafá, M. Muller, M.A. Mussa, R. Navarra, G. Nellen, L. Newman-Holmes, C. Newton, D. Thi, T.N. Nichol, R. Nierstenhöfer, N. Nitz, D. Nogima, H. Nosek, D. Nožka, L. Oehlschläger, J. Ohnuki, T. Olinto, A. Oliveira, L.F.A. Olmos-Gilbaja, V.M. Ortiz, M. Ostapchenko, S. Otero, L. Palatka, M. Pallotta, J. Parente, G. Parizot, E. Parlati, S. Patel, M. Paul, T. Payet, K. Pech, M. Pȩkala, J. Pelayo, R. Pepe, I.M. Perrone, L. Petrera, S. Petrinca, P. Petrov, Y. Pham Ngoc, D. Pham Thi, T.N. Piegaia, R. Pierog, T. Pisanti, O. Porter, T.A. Pouryamout, J. Prado Jr., L. Privitera, P. Prouza, M. Quel, E.J. Rautenberg, J. Reis, H.C. Reucroft, S. Revenu, B. Řídký, J. Risi, A. Risse, M. Rivière, C. Rizi, V. Robbins, S. Roberts, M. Robledo, C. Rodriguez, G. Rodríguez Frías, D. Rodriguez Martino, J. Rodriguez Rojo, J. Ros, G. Rosado, J. Roth, M. Roucelle, C. Rouillé-d'Orfeuil, B. Roulet, E. Rovero, A.C. Salamida, F. Salazar, H. Salina, G. Sánchez, F. Santander, M. Santos, E.M. Sarkar, S. Sato, R. Scherini, V. Schieler, H. Schmidt, T. Scholten, O. Schovánek, P. Schüssler, F. Sciutto, S.J. Scuderi, M. Semikoz, D. Sequeiros, G. Shellard, R.C. Siffert, B.B. Sigl, G. Skelton, P. Slater, W. De Grande, N.S. Smiałkowski, A. Šmída, R. Smith, B.E. Snow, G.R. Sokolsky, P. Sommers, P. Sorokin, J. Spinka, H. Strazzeri, E. Stutz, A. Suarez, F. Suomijärvi, T. Supanitsky, A.D. Swain, J. Szadkowski, Z. Tamashiro, A. Tamburro, A. Tascau, O. Ticona, R. Timmermans, C. Tkaczyk, W. Todero Peixoto, C.J. Tonachini, A. Torresi, D. Travnicek, P. Tripathi, A. Tristram, G. Tscherniakhovski, D. Tueros, M. Tunnicliffe, V. Ulrich, R. Unger, M. Urban, M. Valdés Galicia, J.F. Valiño, I. Valore, L. van den Berg, A.M. van Elewyck, V. Vazquez, R.A. Veberič, D. Veiga, A. Velarde, A. Venters, T. Verzi, V. Videla, M. Villaseñor, L. Vo Van, T. Vorobiov, S. Voyvodic, L. Wahlberg, H. Wainberg, O. Waldenmaier, T. Walker, P. Warner, D. Watson, A.A. Westerhoff, S. Wiebusch, C. Wieczorek, G. Wiencke, L. Wilczyńska, B. Wilczyński, H. Wileman, C. Winnick, M.G. Xu, J. Yamamoto, T. Younk, P. Zas, E. Zavrtanik, D. Zavrtanik, M. Zech, A. Zepeda, A. Zha, M. Ziolkowski, M.
Subjects: Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics
Abstract: Data from the Pierre Auger Observatory are analyzed to search for anisotropies near the direction of the Galactic Centre at EeV energies. The exposure of the surface array in this part of the sky is already significantly larger than that of the fore-runner experiments. Our results do not support previous findings of localized excesses in the AGASA and SUGAR data. We set an upper bound on a point-like flux of cosmic rays arriving from the Galactic Centre which excludes several scenarios predicting sources of EeV neutrons from Sagittarius A. Also the events detected simultaneously by the surface and fluorescence detectors (the 'hybrid' data set), which have better pointing accuracy but are less numerous than those of the surface array alone, do not show any significant localized excess from this direction. © 2006 Elsevier B.V. All rights reserved.
Published: 2007

31. An upper limit to the photon fraction in cosmic rays above 1019 eV from the Pierre Auger Observatory

Author: Abraham, J. Aglietta, M. Aguirre, C. Allard, D. Allekotte, I. Allison, P. Alvarez, C. Alvarez-Muñiz, J. Ambrosio, M. Anchordoqui, L. Anjos, J.C. Aramo, C. Arisaka, K. Armengaud, E. Arneodo, F. Arqueros, F. Asch, T. Asorey, H. Atulugama, B.S. Aublin, J. Ave, M. Avila, G. Bacelar, J. Bäcker, T. Badagnani, D. Barbosa, A.F. Barbosa, H.M.J. Barkhausen, M. Barnhill, D. Barroso, S.L.C. Bauleo, P. Beatty, J. Beau, T. Becker, B.R. Becker, K.H. Bellido, J.A. BenZvi, S. Berat, C. Bergmann, T. Bernardini, P. Bertou, X. Biermann, P.L. Billoir, P. Blanch-Bigas, O. Blanco, F. Blasi, P. Bleve, C. Blümer, H. Boghrat, P. Boháčová, M. Bonifazi, C. Bonino, R. Boratav, M. Brack, J. Brunet, J.M. Buchholz, P. Busca, N.G. Caballero-Mora, K.S. Cai, B. Camin, D.V. Capdevielle, J.N. Caruso, R. Castellina, A. Cataldi, G. Cazón, L. Cester, R. Chauvin, J. Chiavassa, A. Chinellato, J.A. Chou, A. Chye, J. Claes, D. Clark, P.D.J. Clay, R.W. Clay, S.B. Connolly, B. Cordier, A. Cotti, U. Coutu, S. Covault, C.E. Cronin, J. Dagoret-Campagne, S. Dang Quang, T. Darriulat, P. Daumiller, K. Dawson, B.R. de Almeida, R.M. de Carvalho, L.A. De Donato, C. de Jong, S.J. de Mello Jr., W.J.M. de Mello Neto, J.R.T. De Mitri, I. de Oliveira, M.A.L. de Souza, V. del Peral, L. Deligny, O. Della Selva, A. Delle Fratte, C. Dembinski, H. Di Giulio, C. Diaz, J.C. Dobrigkeit, C. D'Olivo, J.C. Dornic, D. Dorofeev, A. Dova, M.T. D'Urso, D. DuVernois, M.A. Engel, R. Epele, L. Erdmann, M. Escobar, C.O. Etchegoyen, A. Ewers, A. Facal San Luis, P. Falcke, H. Fauth, A.C. Fazio, D. Fazzini, N. Fernández, A. Ferrer, F. Ferry, S. Fick, B. Filevich, A. Filipčič, A. Fleck, I. Fokitis, E. Fonte, R. Fuhrmann, D. Fulgione, W. García, B. Garcia-Pinto, D. Garrard, L. Garrido, X. Geenen, H. Gelmini, G. Gemmeke, H. Geranios, A. Ghia, P.L. Giller, M. Gitto, J. Glass, H. Gobbi, F. Gold, M.S. Gomez Albarracin, F. Gómez Berisso, M. Gómez Herrero, R. Gonçalves do Amaral, M. Gongora, J.P. Gonzalez, D. Gonzalez, J.G. González, M. Góra, D. Gorgi, A. Gouffon, P. Grassi, V. Grillo, A. Grunfeld, C. Grupen, C. Guarino, F. Guedes, G.P. Gutiérrez, J. Hague, J.D. Hamilton, J.C. Harakeh, M.N. Harari, D. Harmsma, S. Hartmann, S. Harton, J.L. Healy, M.D. Hebbeker, T. Heck, D. Hojvat, C. Homola, P. Hörandel, J. Horneffer, A. Horvat, M. Hrabovský, M. Iarlori, M. Insolia, A. Kaducak, M. Kalashev, O. Kampert, K.H. Keilhauer, B. Kemp, E. Klages, H.O. Kleifges, M. Kleinfeller, J. Knapik, R. Knapp, J. Koang, D.-H. Kolotaev, Y. Kopmann, A. Krömer, O. Kuhlman, S. Kuijpers, J. Kunka, N. Kusenko, A. Lachaud, C. Lago, B.L. Lebrun, D. LeBrun, P. Lee, J. Letessier-Selvon, A. Leuthold, M. Lhenry-Yvon, I. Longo, G. López, R. Lopez Agüera, A. Lucero, A. Maldera, S. Malek, M. Maltezos, S. Mancarella, G. Manceñido, M.E. Mandat, D. Mantsch, P. Mariazzi, A.G. Maris, I.C. Martello, D. Martinez, N. Martínez, J. Martínez, O. Mathes, H.J. Matthews, J. Matthews, J.A.J. Matthiae, G. Maurin, G. Maurizio, D. Mazur, P.O. McCauley, T. McEwen, M. McNeil, R.R. Medina, G. Medina, M.C. Medina Tanco, G. Meli, A. Melo, D. Menichetti, E. Menshikov, A. Meurer, Chr. Meyhandan, R. Micheletti, M.I. Miele, G. Miller, W. Mollerach, S. Monasor, M. Monnier Ragaigne, D. Montanet, F. Morales, B. Morello, C. Moreno, E. Morris, C. Mostafá, M. Muller, M.A. Mussa, R. Navarra, G. Nellen, L. Newman-Holmes, C. Newton, D. Nguyen Thi, T. Nichol, R. Nierstenhöfer, N. Nitz, D. Nogima, H. Nosek, D. Nožka, L. Oehlschläger, J. Ohnuki, T. Olinto, A. Oliveira, L.F.A. Olmos-Gilbaja, V.M. Ortiz, M. Ostapchenko, S. Otero, L. Palatka, M. Pallotta, J. Parente, G. Parizot, E. Parlati, S. Patel, M. Paul, T. Payet, K. Pech, M. Pȩkala, J. Pelayo, R. Pepe, I.M. Perrone, L. Petrera, S. Petrinca, P. Petrov, Y. Pham Ngoc, D. Pham Thi, T.N. Piegaia, R. Pierog, T. Pisanti, O. Porter, T.A. Pouryamout, J. Prado Jr., L. Privitera, P. Prouza, M. Quel, E.J. Rautenberg, J. Reis, H.C. Reucroft, S. Revenu, B. Řídký, J. Risi, A. Risse, M. Rivière, C. Rizi, V. Robbins, S. Roberts, M. Robledo, C. Rodriguez, G. Rodríguez Frías, D. Rodriguez Martino, J. Rodriguez Rojo, J. Ros, G. Rosado, J. Roth, M. Roucelle, C. Rouillé-d'Orfeuil, B. Roulet, E. Rovero, A.C. Salamida, F. Salazar, H. Salina, G. Sánchez, F. Santander, M. Santos, E.M. Sarkar, S. Sato, R. Scherini, V. Schmidt, T. Scholten, O. Schovánek, P. Schüssler, F. Sciutto, S.J. Scuderi, M. Semikoz, D. Sequeiros, G. Shellard, R.C. Siffert, B.B. Sigl, G. Skelton, P. Slater, W. Smetniansky De Grande, N. Smiałkowski, A. Šmída, R. Smith, B.E. Snow, G.R. Sokolsky, P. Sommers, P. Sorokin, J. Spinka, H. Strazzeri, E. Stutz, A. Suarez, F. Suomijärvi, T. Supanitsky, A.D. Swain, J. Szadkowski, Z. Tamashiro, A. Tamburro, A. Tascau, O. Ticona, R. Timmermans, C. Tkaczyk, W. Todero Peixoto, C.J. Tonachini, A. Torresi, D. Travnicek, P. Tripathi, A. Tristram, G. Tscherniakhovski, D. Tueros, M. Tunnicliffe, V. Ulrich, R. Unger, M. Urban, M. Valdés Galicia, J.F. Valiño, I. Valore, L. van den Berg, A.M. van Elewyck, V. Vazquez, R.A. Veberič, D. Veiga, A. Velarde, A. Venters, T. Verzi, V. Videla, M. Villaseñor, L. Vo Van, T. Vorobiov, S. Voyvodic, L. Wahlberg, H. Wainberg, O. Waldenmaier, T. Walker, P. Warner, D. Watson, A.A. Westerhoff, S. Wiebusch, C. Wieczorek, G. Wiencke, L. Wilczyńska, B. Wilczyński, H. Wileman, C. Winnick, M.G. Xu, J. Yamamoto, T. Younk, P. Zas, E. Zavrtanik, D. Zavrtanik, M. Zech, A. Zepeda, A. Zha, M. Ziolkowski, M.
Subjects: Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics
Abstract: An upper limit of 16% (at 95% c.l.) is derived for the photon fraction in cosmic rays with energies greater than 1019 eV, based on observations of the depth of shower maximum performed with the hybrid detector of the Pierre Auger Observatory. This is the first such limit on photons obtained by observing the fluorescence light profile of air showers. This upper limit confirms and improves on previous results from the Haverah Park and AGASA surface arrays. Additional data recorded with the Auger surface detectors for a subset of the event sample support the conclusion that a photon origin of the observed events is not favored. © 2006 Elsevier B.V. All rights reserved.
Published: 2007

32. GALPROP WebRun: An internet-based service for calculating galactic cosmic ray propagation and associated photon emissions

Author: Vladimirov, A.E., primary, Digel, S.W., additional, Jóhannesson, G., additional, Michelson, P.F., additional, Moskalenko, I.V., additional, Nolan, P.L., additional, Orlando, E., additional, Porter, T.A., additional, and Strong, A.W., additional
Published: 2011
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33. Constraints on dark matter annihilation in clusters of galaxies with the Fermi large area telescope

Author: Ackermann, M, primary, Ajello, M, additional, Allafort, A, additional, Baldini, L, additional, Ballet, J, additional, Barbiellini, G, additional, Bastieri, D, additional, Bechtol, K, additional, Bellazzini, R, additional, Blandford, R.D, additional, Bloom, E.D, additional, Bonamente, E, additional, Borgland, A.W, additional, Bouvier, A, additional, Brandt, T.J, additional, Bregeon, J, additional, Brigida, M, additional, Bruel, P, additional, Buehler, R, additional, Buson, S, additional, Caliandro, G.A, additional, Cameron, R.A, additional, Caraveo, P.A, additional, Carrigan, S, additional, Casandjian, J.M, additional, Cecchi, C, additional, Charles, E, additional, Chekhtman, A, additional, Cheung, C.C, additional, Chiang, J, additional, Ciprini, S, additional, Claus, R, additional, Cohen-Tanugi, J, additional, Cominsky, L.R, additional, Conrad, J, additional, Angelis, A. de, additional, Palma, F. de, additional, Silva, E. do Couto e, additional, Drell, P.S, additional, Drlica-Wagner, A, additional, Dubois, R, additional, Dumora, D, additional, Edmonds, Y, additional, Farnier, C, additional, Favuzzi, C, additional, Fegan, S.J, additional, Frailis, M, additional, Fukazawa, Y, additional, Fusco, P, additional, Gargano, F, additional, Gasparrini, D, additional, Gehrels, N, additional, Germani, S, additional, Giglietto, N, additional, Giordano, F, additional, Glanzman, T, additional, Godfrey, G, additional, Grenier, I.A, additional, Guiriec, S, additional, Gustafsson, M, additional, Harding, A.K, additional, Hayashida, M, additional, Horan, D, additional, Hughes, R.E, additional, Jeltema, T.E, additional, Jóhannesson, G, additional, Johnson, A S, additional, Johnson, W.N, additional, Kamae, T, additional, Katagiri, H, additional, Kataoka, J, additional, Knödlseder, J, additional, Kuss, M, additional, Lande, J, additional, Latronico, L, additional, Lee, S.-H, additional, Garde, M. Llena, additional, Longo, F, additional, Loparco, F, additional, Lovellette, M.N, additional, Lubrano, P, additional, Madejski, G.M, additional, Makeev, A, additional, Mazziotta, M.N, additional, Michelson, P.F, additional, Mitthumsiri, W, additional, Mizuno, T, additional, Moiseev, A.A, additional, Monte, C, additional, Monzani, M.E, additional, Morselli, A, additional, Moskalenko, I.V, additional, Murgia, S, additional, Nolan, P.L, additional, Norris, J.P, additional, Nuss, E, additional, Ohno, M, additional, Ohsugi, T, additional, Omodei, N, additional, Orlando, E, additional, Ormes, J.F, additional, Panetta, J.H, additional, Pepe, M, additional, Pesce-Rollins, M, additional, Piron, F, additional, Porter, T.A, additional, Profumo, S, additional, Rainò, S, additional, Razzano, M, additional, Reposeur, T, additional, Ritz, S, additional, Rodriguez, A.Y, additional, Roth, M, additional, Sadrozinski, H.F.-W, additional, Sander, A, additional, Scargle, J.D, additional, Sgrò, C, additional, Siskind, E.J, additional, Smith, P.D, additional, Spandre, G, additional, Spinelli, P, additional, Starck, J.-L, additional, Strickman, M.S, additional, Suson, D.J, additional, Takahashi, H, additional, Tanaka, T, additional, Thayer, J.B, additional, Thayer, J.G, additional, Tibaldo, L, additional, Torres, D.F, additional, Tosti, G, additional, Usher, T.L, additional, Vasileiou, V, additional, Vitale, V, additional, Waite, A.P, additional, Wang, P, additional, Winer, B.L, additional, Wood, K.S, additional, Yang, Z, additional, Ylinen, T, additional, and Ziegler, M, additional
Published: 2010
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34. An upper limit to the photon fraction in cosmic rays above 1019eV from the Pierre Auger Observatory

Author: Abraham, J., primary, Aglietta, M., additional, Aguirre, C., additional, Allard, D., additional, Allekotte, I., additional, Allison, P., additional, Alvarez, C., additional, Alvarez-Muñiz, J., additional, Ambrosio, M., additional, Anchordoqui, L., additional, Anjos, J.C., additional, Aramo, C., additional, Arisaka, K., additional, Armengaud, E., additional, Arneodo, F., additional, Arqueros, F., additional, Asch, T., additional, Asorey, H., additional, Atulugama, B.S., additional, Aublin, J., additional, Ave, M., additional, Avila, G., additional, Bacelar, J., additional, Bäcker, T., additional, Badagnani, D., additional, Barbosa, A.F., additional, Barbosa, H.M.J., additional, Barkhausen, M., additional, Barnhill, D., additional, Barroso, S.L.C., additional, Bauleo, P., additional, Beatty, J., additional, Beau, T., additional, Becker, B.R., additional, Becker, K.H., additional, Bellido, J.A., additional, BenZvi, S., additional, Berat, C., additional, Bergmann, T., additional, Bernardini, P., additional, Bertou, X., additional, Biermann, P.L., additional, Billoir, P., additional, Blanch-Bigas, O., additional, Blanco, F., additional, Blasi, P., additional, Bleve, C., additional, Blümer, H., additional, Boghrat, P., additional, Boháčová, M., additional, Bonifazi, C., additional, Bonino, R., additional, Boratav, M., additional, Brack, J., additional, Brunet, J.M., additional, Buchholz, P., additional, Busca, N.G., additional, Caballero-Mora, K.S., additional, Cai, B., additional, Camin, D.V., additional, Capdevielle, J.N., additional, Caruso, R., additional, Castellina, A., additional, Cataldi, G., additional, Cazón, L., additional, Cester, R., additional, Chauvin, J., additional, Chiavassa, A., additional, Chinellato, J.A., additional, Chou, A., additional, Chye, J., additional, Claes, D., additional, Clark, P.D.J., additional, Clay, R.W., additional, Clay, S.B., additional, Connolly, B., additional, Cordier, A., additional, Cotti, U., additional, Coutu, S., additional, Covault, C.E., additional, Cronin, J., additional, Dagoret-Campagne, S., additional, Dang Quang, T., additional, Darriulat, P., additional, Daumiller, K., additional, Dawson, B.R., additional, de Almeida, R.M., additional, de Carvalho, L.A., additional, De Donato, C., additional, de Jong, S.J., additional, de Mello, W.J.M., additional, de Mello Neto, J.R.T., additional, De Mitri, I., additional, de Oliveira, M.A.L., additional, de Souza, V., additional, del Peral, L., additional, Deligny, O., additional, Della Selva, A., additional, Delle Fratte, C., additional, Dembinski, H., additional, Di Giulio, C., additional, Diaz, J.C., additional, Dobrigkeit, C., additional, D’Olivo, J.C., additional, Dornic, D., additional, Dorofeev, A., additional, Dova, M.T., additional, D’Urso, D., additional, DuVernois, M.A., additional, Engel, R., additional, Epele, L., additional, Erdmann, M., additional, Escobar, C.O., additional, Etchegoyen, A., additional, Ewers, A., additional, Facal San Luis, P., additional, Falcke, H., additional, Fauth, A.C., additional, Fazio, D., additional, Fazzini, N., additional, Fernández, A., additional, Ferrer, F., additional, Ferry, S., additional, Fick, B., additional, Filevich, A., additional, Filipčič, A., additional, Fleck, I., additional, Fokitis, E., additional, Fonte, R., additional, Fuhrmann, D., additional, Fulgione, W., additional, García, B., additional, Garcia-Pinto, D., additional, Garrard, L., additional, Garrido, X., additional, Geenen, H., additional, Gelmini, G., additional, Gemmeke, H., additional, Geranios, A., additional, Ghia, P.L., additional, Giller, M., additional, Gitto, J., additional, Glass, H., additional, Gobbi, F., additional, Gold, M.S., additional, Gomez Albarracin, F., additional, Gómez Berisso, M., additional, Gómez Herrero, R., additional, Gonçalves do Amaral, M., additional, Gongora, J.P., additional, Gonzalez, D., additional, Gonzalez, J.G., additional, González, M., additional, Góra, D., additional, Gorgi, A., additional, Gouffon, P., additional, Grassi, V., additional, Grillo, A., additional, Grunfeld, C., additional, Grupen, C., additional, Guarino, F., additional, Guedes, G.P., additional, Gutiérrez, J., additional, Hague, J.D., additional, Hamilton, J.C., additional, Harakeh, M.N., additional, Harari, D., additional, Harmsma, S., additional, Hartmann, S., additional, Harton, J.L., additional, Healy, M.D., additional, Hebbeker, T., additional, Heck, D., additional, Hojvat, C., additional, Homola, P., additional, Hörandel, J., additional, Horneffer, A., additional, Horvat, M., additional, Hrabovský, M., additional, Iarlori, M., additional, Insolia, A., additional, Kaducak, M., additional, Kalashev, O., additional, Kampert, K.H., additional, Keilhauer, B., additional, Kemp, E., additional, Klages, H.O., additional, Kleifges, M., additional, Kleinfeller, J., additional, Knapik, R., additional, Knapp, J., additional, Koang, D.-H., additional, Kolotaev, Y., additional, Kopmann, A., additional, Krömer, O., additional, Kuhlman, S., additional, Kuijpers, J., additional, Kunka, N., additional, Kusenko, A., additional, Lachaud, C., additional, Lago, B.L., additional, Lebrun, D., additional, LeBrun, P., additional, Lee, J., additional, Letessier-Selvon, A., additional, Leuthold, M., additional, Lhenry-Yvon, I., additional, Longo, G., additional, López, R., additional, Lopez Agüera, A., additional, Lucero, A., additional, Maldera, S., additional, Malek, M., additional, Maltezos, S., additional, Mancarella, G., additional, Manceñido, M.E., additional, Mandat, D., additional, Mantsch, P., additional, Mariazzi, A.G., additional, Maris, I.C., additional, Martello, D., additional, Martinez, N., additional, Martínez, J., additional, Martínez, O., additional, Mathes, H.J., additional, Matthews, J., additional, Matthews, J.A.J., additional, Matthiae, G., additional, Maurin, G., additional, Maurizio, D., additional, Mazur, P.O., additional, McCauley, T., additional, McEwen, M., additional, McNeil, R.R., additional, Medina, G., additional, Medina, M.C., additional, Medina Tanco, G., additional, Meli, A., additional, Melo, D., additional, Menichetti, E., additional, Menshikov, A., additional, Meurer, Chr., additional, Meyhandan, R., additional, Micheletti, M.I., additional, Miele, G., additional, Miller, W., additional, Mollerach, S., additional, Monasor, M., additional, Monnier Ragaigne, D., additional, Montanet, F., additional, Morales, B., additional, Morello, C., additional, Moreno, E., additional, Morris, C., additional, Mostafá, M., additional, Muller, M.A., additional, Mussa, R., additional, Navarra, G., additional, Nellen, L., additional, Newman-Holmes, C., additional, Newton, D., additional, Nguyen Thi, T., additional, Nichol, R., additional, Nierstenhöfer, N., additional, Nitz, D., additional, Nogima, H., additional, Nosek, D., additional, Nožka, L., additional, Oehlschläger, J., additional, Ohnuki, T., additional, Olinto, A., additional, Oliveira, L.F.A., additional, Olmos-Gilbaja, V.M., additional, Ortiz, M., additional, Ostapchenko, S., additional, Otero, L., additional, Palatka, M., additional, Pallotta, J., additional, Parente, G., additional, Parizot, E., additional, Parlati, S., additional, Patel, M., additional, Paul, T., additional, Payet, K., additional, Pech, M., additional, Pe¸kala, J., additional, Pelayo, R., additional, Pepe, I.M., additional, Perrone, L., additional, Petrera, S., additional, Petrinca, P., additional, Petrov, Y., additional, Pham Ngoc, D., additional, Pham Thi, T.N., additional, Piegaia, R., additional, Pierog, T., additional, Pisanti, O., additional, Porter, T.A., additional, Pouryamout, J., additional, Prado, L., additional, Privitera, P., additional, Prouza, M., additional, Quel, E.J., additional, Rautenberg, J., additional, Reis, H.C., additional, Reucroft, S., additional, Revenu, B., additional, Řídký, J., additional, Risi, A., additional, Risse, M., additional, Rivière, C., additional, Rizi, V., additional, Robbins, S., additional, Roberts, M., additional, Robledo, C., additional, Rodriguez, G., additional, Rodríguez Frías, D., additional, Rodriguez Martino, J., additional, Rodriguez Rojo, J., additional, Ros, G., additional, Rosado, J., additional, Roth, M., additional, Roucelle, C., additional, Rouillé-d’Orfeuil, B., additional, Roulet, E., additional, Rovero, A.C., additional, Salamida, F., additional, Salazar, H., additional, Salina, G., additional, Sánchez, F., additional, Santander, M., additional, Santos, E.M., additional, Sarkar, S., additional, Sato, R., additional, Scherini, V., additional, Schmidt, T., additional, Scholten, O., additional, Schovánek, P., additional, Schüssler, F., additional, Sciutto, S.J., additional, Scuderi, M., additional, Semikoz, D., additional, Sequeiros, G., additional, Shellard, R.C., additional, Siffert, B.B., additional, Sigl, G., additional, Skelton, P., additional, Slater, W., additional, Smetniansky De Grande, N., additional, Smiałkowski, A., additional, Šmída, R., additional, Smith, B.E., additional, Snow, G.R., additional, Sokolsky, P., additional, Sommers, P., additional, Sorokin, J., additional, Spinka, H., additional, Strazzeri, E., additional, Stutz, A., additional, Suarez, F., additional, Suomijärvi, T., additional, Supanitsky, A.D., additional, Swain, J., additional, Szadkowski, Z., additional, Tamashiro, A., additional, Tamburro, A., additional, Tascau, O., additional, Ticona, R., additional, Timmermans, C., additional, Tkaczyk, W., additional, Todero Peixoto, C.J., additional, Tonachini, A., additional, Torresi, D., additional, Travnicek, P., additional, Tripathi, A., additional, Tristram, G., additional, Tscherniakhovski, D., additional, Tueros, M., additional, Tunnicliffe, V., additional, Ulrich, R., additional, Unger, M., additional, Urban, M., additional, Valdés Galicia, J.F., additional, Valiño, I., additional, Valore, L., additional, van den Berg, A.M., additional, van Elewyck, V., additional, Vazquez, R.A., additional, Veberič, D., additional, Veiga, A., additional, Velarde, A., additional, Venters, T., additional, Verzi, V., additional, Videla, M., additional, Villaseñor, L., additional, Vo Van, T., additional, Vorobiov, S., additional, Voyvodic, L., additional, Wahlberg, H., additional, Wainberg, O., additional, Waldenmaier, T., additional, Walker, P., additional, Warner, D., additional, Watson, A.A., additional, Westerhoff, S., additional, Wiebusch, C., additional, Wieczorek, G., additional, Wiencke, L., additional, Wilczyńska, B., additional, Wilczyński, H., additional, Wileman, C., additional, Winnick, M.G., additional, Xu, J., additional, Yamamoto, T., additional, Younk, P., additional, Zas, E., additional, Zavrtanik, D., additional, Zavrtanik, M., additional, Zech, A., additional, Zepeda, A., additional, Zha, M., additional, and Ziolkowski, M., additional
Published: 2007
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35. The offline software framework of the Pierre Auger Observatory.

Author: Argiro, S., Barroso, S.L.C., Gonzalez, J., Nellen, L., Paul, T., Porter, T.A., Prado, L., Roth, M., Ulrich, R., and Veberic, D.
Published: 2005
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36. Birth synchrony in greater spear-nosed bats (Phyllostomus hastatus)

Author: Porter, T.A., primary and Wilkinson, G. S., additional
Published: 2001
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37. Inference of the local interstellar spectra of cosmic-ray nuclei Z ≼ 28 with the GALPROP-HELMOD Framework

Author: Mauro Tacconi, Massimo Gervasi, Troy A. Porter, G. Jóhannesson, G. La Vacca, S. Della Torre, N. Masi, L. Quadrani, Igor V. Moskalenko, Pier-Giorgio Rancoita, D. Grandi, S. Pensotti, D. Rozza, Matteo Boschini, Boschini M.J., della Torre S., Gervasi M., Grandi D., Johannesson G., la Vacca G., Masi N., Moskalenko I.V., Pensotti S., Porter T.A., Quadrani L., Rancoita P.G., Rozza D., Tacconi M., Boschini, M, Torre, S, Gervasi, M, Grandi, D, Jóhannesson, G, La Vacca, G, Masi, N, Moskalenko, I, Pensotti, S, Porter, T, Quadrani, L, Rancoita, P, Rozza, D, and Tacconi, M
Subjects: Astrophysics::High Energy Astrophysical Phenomena, Interplanetary medium, Cosmic ray, Astrophysics, 01 natural sciences, Article, Galactic cosmic ray, FIS/05 - ASTRONOMIA E ASTROFISICA, Heliosphere, Cosmic ray detectors, Interstellar medium, 0103 physical sciences, Cosmic ray source, 010306 general physics, 010303 astronomy & astrophysics, Physics, Astronomy and Astrophysics, Abundance of the chemical elements, FIS/01 - FISICA SPERIMENTALE, Orders of magnitude (time), Space and Planetary Science, Antiproton, Antimatter, Astrophysics - High Energy Astrophysical Phenomena
Abstract: Composition and spectra of Galactic cosmic rays (CRs) are vital for studies of high-energy processes in a variety of environments and on different scales, for interpretation of gamma-ray and microwave observations, disentangling possible signatures of new phenomena, and for understanding of our local Galactic neighborhood. Since its launch, AMS-02 has delivered outstanding quality measurements of the spectra of antiprotons, electrons, positrons, and nuclei: H-O, Ne, Mg, Si. These measurements resulted in a number of breakthroughs, however, spectra of heavier nuclei and especially low-abundance nuclei are not expected until later in the mission. Meanwhile, a comparison of published AMS-02 results with earlier data from HEAO-3-C2 indicate that HEAO-3-C2 data may be affected by undocumented systematic errors. Utilizing such data to compensate for the lack of AMS-02 measurements could result in significant errors. In this paper we show that a fraction of HEAO-3-C2 data match available AMS-02 measurements quite well and can be used together with Voyager 1 and ACE-CRIS data to make predictions for the local interstellar spectra (LIS) of nuclei that are not yet released by AMS-02. We are also updating our already published LIS to provide a complete set from H-Ni in the energy range from 1 MeV/nucleon to ~100-500 TeV/nucleon thus covering 8-9 orders of magnitude in energy. Our calculations employ the GalProp-HelMod framework that is proved to be a reliable tool in deriving the LIS of CR antiprotons, electrons, and nuclei H-O., Comment: 90 pages, 36 figures, 60 tables, ApJS; Fixed typos in Eqs.(C2) and (C32)
Published: 2020

38. Deciphering the Local Interstellar Spectra of Primary Cosmic-Ray Species with HelMod

Author: Igor V. Moskalenko, Gudlaugur Johannesson, Mauro Tacconi, Massimo Gervasi, G. La Vacca, T. A. Porter, S. Della Torre, Matteo Boschini, N. Masi, D. Grandi, L. Quadrani, S. Pensotti, P. G. Rancoita, Davide Rozza, Raunvísindastofnun (HÍ), Science Institute (UI), Verkfræði- og náttúruvísindasvið (HÍ), School of Engineering and Natural Sciences (UI), Háskóli Íslands, University of Iceland, Boschini M.J., Torre S.D., Gervasi M., Grandi D., Johannesson G., Vacca G.L., Masi N., Moskalenko I.V., Pensotti S., Porter T.A., Quadrani L., Rancoita P.G., Rozza D., Tacconi M., Boschini, M, Torre, S, Gervasi, M, Grandi, D, Jóhannesson, G, Vacca, G, Masi, N, Moskalenko, I, Pensotti, S, Porter, T, Quadrani, L, Rancoita, P, Rozza, D, and Tacconi, M
Subjects: Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Interplanetary medium, chemistry.chemical_element, Cosmic ray, Astrophysics, Electron, 01 natural sciences, Article, Spectral line, FIS/05 - ASTRONOMIA E ASTROFISICA, Heliosphere, 0103 physical sciences, elementary particle, Sun: heliosphere, 010306 general physics, 010303 astronomy & astrophysics, Cosmic rays, Helium, cosmic ray, ISM: general, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Sólkerfið, diffusion, Elementary particles, Astronomy and Astrophysics, Stjarneðlisfræði, Galaxy, Öreindir, FIS/01 - FISICA SPERIMENTALE, chemistry, Space and Planetary Science, Antiproton, cosmic rays – diffusion – elementary particles – interplanetary medium – ISM: general – Sun: heliosphere, Astrophysics - High Energy Astrophysical Phenomena, interplanetary medium, FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
Abstract: Local interstellar spectra (LIS) of primary cosmic ray (CR) nuclei, such as helium, oxygen, and mostly primary carbon are derived for the rigidity range from 10 MV to ~200 TV using the most recent experimental results combined with the state-of-the-art models for CR propagation in the Galaxy and in the heliosphere. Two propagation packages, GALPROP and HelMod, are combined into a single framework that is used to reproduce direct measurements of CR species at different modulation levels, and at both polarities of the solar magnetic field. The developed iterative maximum-likelihood method uses GALPROP-predicted LIS as input to HelMod, which provides the modulated spectra for specific time periods of the selected experiments for model–data comparison. The interstellar and heliospheric propagation parameters derived in this study are consistent with our prior analyses using the same methodology for propagation of CR protons, helium, antiprotons, and electrons. The resulting LIS accommodate a variety of measurements made in the local interstellar space (Voyager 1) and deep inside the heliosphere at low (ACE/CRIS, HEAO-3) and high energies (PAMELA, AMS-02)., This work is supported by ASI (Agenzia Spaziale Italiana) through a contract ASI-INFN I/002/13/0 and by ESA (European Space Agency) through a contract 4000116146/16/NL/HK. I.V.M. and T.A.P. acknowledge support from NASA Grant No. NNX17AB48G. We thank the ACE/CRIS instrument team and the ACE Science Center for providing the ACE data. The HelMod team acknowledges use of the OMNI data and OMNIWeb (CDAWeb, ftp) services provided by the NASA/GSFC Space Physics Data Facility
Published: 2018

39. HelMod in the Works: From Direct Observations to the Local Interstellar Spectrum of Cosmic-Ray Electrons

Author: Igor V. Moskalenko, Pier-Giorgio Rancoita, S. Pensotti, Massimo Gervasi, Davide Rozza, Gudlaugur Johannesson, L. Quadrani, N. Masi, S. Della Torre, D. Grandi, Matteo Boschini, G. La Vacca, Mauro Tacconi, T. A. Porter, Boschini M.J., Torre S.D., Gervasi M., Grandi D., Johannesson G., La Vacca G., Masi N., Moskalenko I.V., Pensotti S., Porter T.A., Quadrani L., Rancoita P.G., Rozza D., Tacconi M., Boschini, M, Della Torre, S, Gervasi, M, Grandi, D, Jóhannesson, G, La Vacca, G, Masi, N, Moskalenko, I, Pensotti, S, Porter, T, Quadrani, L, Rancoita, P, Rozza, D, Tacconi, M, Raunvísindastofnun (HÍ), Science Institute (UI), Verkfræði- og náttúruvísindasvið (HÍ), School of Engineering and Natural Sciences (UI), Háskóli Íslands, and University of Iceland
Subjects: Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Interplanetary medium, chemistry.chemical_element, Cosmic ray, Electron, 01 natural sciences, Article, Spectral line, Heliosphere, FIS/05 - ASTRONOMIA E ASTROFISICA, 0103 physical sciences, elementary particle, Sun: heliosphere, 010306 general physics, Cosmic rays, 010303 astronomy & astrophysics, Helium, cosmic ray, ISM: general, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, Sólkerfið, diffusion, Ecliptic, Elementary particles, Astronomy and Astrophysics, Stjarneðlisfræði, Galaxy, Öreindir, Computational physics, chemistry, Space and Planetary Science, cosmic rays – diffusion – elementary particles – interplanetary medium – ISM: general – Sun: heliosphere, Astrophysics - High Energy Astrophysical Phenomena, interplanetary medium
Abstract: The local interstellar spectrum (LIS) of cosmic-ray (CR) electrons for the energy range 1 MeV to 1 TeV is derived using the most recent experimental results combined with the state-of-the-art models for CR propagation in the Galaxy and in the heliosphere. Two propagation packages, GALPROP and HelMod, are combined to provide a single framework that is run to reproduce direct measurements of CR species at different modulation levels, and at both polarities of the solar magnetic field. An iterative maximum-likelihood method is developed that uses GALPROP-predicted LIS as input to HelMod, which provides the modulated spectra for specific time periods of the selected experiments for model-data comparison. The optimized HelMod parameters are then used to adjust GALPROP parameters to predict a refined LIS with the procedure repeated subject to a convergence criterion. The parameter optimization uses an extensive data set of proton spectra from 1997 to 2015. The proposed CR electron LIS accommodates both the low-energy interstellar spectra measured by Voyager 1 as well as the high-energy observations by PAMELA and AMS-02 that are made deep in the heliosphere; it also accounts for Ulysses counting rate features measured out of the ecliptic plane. The interstellar and heliospheric propagation parameters derived in this study agree well with our earlier results for CR protons, helium nuclei, and anti-protons propagation and LIS obtained in the same framework., This work is supported by ASI (Agenzia Spaziale Italiana) under contract ASI-INFN I/002/13/0 and ESA (European Space Agency) contract 4000116146/16/NL/HK. I.V.M. and T.A.P. acknowledge support from NASA Grant No. NNX17AB48G.
Published: 2018

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