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226 results on '"Swordy, S."'

201. Measurements of the cosmic-ray positron fraction from 1 to 50 GeV

Author

Barwick, S. W., Beatty, J. J., Bhattacharyya, A., Bower, C. R., Chaput, C. J., Coutu, S., Nolfo, G. A., Johannes Knapp, Lowder, D. M., Mckee, S., Müller, D., Musser, J. A., Nutter, S. L., Schneider, E., Swordy, S. P., Tarlé, G., Tomasch, A. D., and Torbet, E.

202. The data acquisition software, system of the 2004/2005 CREAM experiment

Author

Zinn, S. -Y, Ahn, H. S., Allison, P., Bagliesi, M. G., Beatty, J. J., Bigongiari, G., Boyle, P., Childers, J. T., Conklin, N. B., Stephane Coutu, Duvernois, M. A., Ganel, O., Han, J. H., Hyun, H. J., Jeon, J. A., Kim, K. C., Lee, J. K., Lee, M. H., Lutz, L., Maestro, P., Malinine, A., Marrocchesi, P. S., Minnick, S., Mognet, S. I., Nam, S. W., Nutter, S., Park, N. H., Park, H., Park, I. H., Seo, E. S., Sina, R., Swordy, S., Wakely, S., Wu, J., Yang, J., Yoon, Y. S., and Zei, R.

203. The record breaking 42-day balloon flight of CREAM

Author

Seo, E. S., Ahn, H. S., Allison, P., Bagliesi, M. G., Beatty, J. J., Bigongiari, G., Boyle, P., Childers, J. T., Conklin, N. B., Coutu, S., Duvernois, M. A., Ganel, O., Han, J. H., Hyun, H. J., Jeon, J. A., Kim, K., Lee, J. K., Lee, M. H., Lutz, L., Maestrod, P., Malinine, A., Marrocchesi, P. S., Minnick, S., Mognet, S. I., Nam, S. W., Nutter, S., Park, N. H., Park, H., Park, I. H., Sina, R., Swordy, S., Wakely, S., Wu, J., Yang, J., Young Soo Yoon, Zei, R., and Zinn, S. Y.

204. Performance of the CREAM silicon charge detector during its first flight

Author

Yang, J., Ahn, H. S., Allison, P., Bagliesi, M. G., Beatty, J. J., Bigongiari, G., Boyle, P., Childers, J. T., Conklin, N. B., Coutu, S., Duvernois, M. A., Ganel, O., Han, J. H., Hyun, H. J., Jeon, J. A., Kim, K. C., Lee, J. K., Lee, M. H., Lutz, L., paolo maestro, Malinine, A., Marrocchesi, P. S., Minnick, S., Mognet, S. I., Nam, S. W., Nutter, S., Park, H., Park, I. H., Park, N. H., Seo, E. S., Sina, R., Swordy, S., Wakely, S., Wu, J., Yoon, Y. S., Zei, R., and Zinn, S. Y.

205. Spectral Energy Distribution of Markarian 501: Quiescent State Versus Extreme Outburst

Author

Acciari, V.-A., Aleksic, J., Antonelli, L. A., Antoranz, P., Arlen, T., Aune, T., Backes, M., Barrio, J. A., Bastieri, D., Becerra González, J., Bednarek, W., Schultz, C., Schweizer, T., Sembroski, G. H., Shayduk, M., Shore, S. N., Sierpowska-Bartosik, A., Sillanpää, A., Sitarek, J., Sobczynska, D., Boller, A., Konopelko, A., Spanier, F., Spiro, S., Stamerra, A., Steele, D., Steinke, B., Storz, J., Strah, N., Struebig, J. C., Suric, T., Swordy, S. P., Krähenbühl, T., Boltuch, D., Takalo, L., Tavecchio, F., Temnikov, P., Terzic, T., Tescaro, D., Teshima, M., Theiling, M., Collaboration, The MAGIC, Collaboration, The VERITAS, Kranich, D., Thibadeau, S., Bonnoli, G., Torres, D. F., Vankov, H., Varlotta, A., Vassiliev, V. V., Vincent, S., Wagner, R. M., Wakely, S. P., Ward, J. E., Krause, J., Weekes, T. C., Weinstein, A., Bordas, P., Weisgarber, T., Weitzel, Q., Williams, D. A., Wood, M., Zabalza, V., Zandanel, F., Zanin, R., Krawczynski, H., Zitzer, B., Borla Tridon, D., Bosch-Ramon, V., Bose, D., Böttcher, M., Bradbury, S.-M., Braun, I., Bretz, T., Buckley, J.-H., Bugaev, V., Krennrich, F., Camara, M., Cannon, A., Carmona, E., Carosi, A., Cesarini, A., Ciupik, L., Colin, P., Colombo, E., Contreras, J. L., Cortina, J., La Barbera, A., Covino, S., Cui, W., Dazzi, F., De Angelis, A., De Cea Del Pozo, E., Delgado Mendez, C., De Lotto, B., De Maria, M., De Sabata, F., Diago Ortega, A., Leonardo, E., Dickherber, R., Doert, M., Domínguez, A., Dominis Prester, D., Dorner, D., Doro, M., Duke, C., Elsaesser, D., Errando, M., Lindfors, E., Falcone, A., Ferenc, D., Finley, J . P., Finnegan, G., Fonseca, M. V., Font, L., Fortson, L., Furniss, A., Galante, N., Gall, D., Lombardi, S., García López, R. J., Garczarczyk, M., Gaug, M., Giavitto, G., Godambe, S., Godinovic, N., Grube, J., Guenette, R., Gyuk, G., Hadasch, D., Beilicke, M., Hanna, D., Hayashida, M., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Holder, J., Hose, J., Hrupec, D., Huang, D., Hui, C. M., Longo, F., Humensky, T. B., Imran, A., Jogler, T., Kaaret, P., Karlsson, N., Kertzman, M., Kieda, D., Klepser, S., López, M., Lorenz, E., Madhavan, A. S., Maier, G., Majumdar, P., Makariev, M., Maneva, G., Mankuzhiyil, N., Mannheim, K., Benbow, W., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., McArthur, S., McCann, A., Meucci, M., Miranda, J. M., Mirzoyan, R., Miyamoto, H., Berdyugin, A., Moldón, J., Moralejo, A., Moriarty, P., Nieto, D., Nilsson, K., Ong, R. A., Orito, R., Otte, A. N., Oya, I., Pandel, D., Berger, K., Paneque, D., Paoletti, R., Paredes, J. M., Partini, S., Pasanen, M., Pauss, F., Pegna, R. G., Perez-Torres, M. A., Perkins, J. S., Persic, M., Bernardini, E., Peruzzo, L., Pichel, A., Pochon, J., Pohl, M., Prada, F., Prada Moroni, P. G., Prandini, E., Puchades, N., Puljak, I., Quinn, J., Biland, A., Ragan, K., Reichardt, I., Reinthal, R., Reyes, L. C., Reynolds, P. T., Rhode, W., Ribó, M., Rico, J., Rissi, M., Roache, E., Blanch, O., Rose, H. J., Rügamer, S., Saggion, A., Saito, K., Saito, T. Y., Salvati, M., Sánchez-Conde, M., Satalecka, K., Scalzotto, V., Scapin, V., Bock, R. K., and Schroedter, M.

Subjects
7. Clean energy
Abstract

The Astrophysical Journal ; Volume 729, Number 2

207. Timing charge and position analysis from the first CREAM flight

Author

Childers, J. T., Ahn, H. S., Allison, P. S., Bagliesi, M. G., Beatty, J. J., Bigongiari, G., Boyle, P. J., Brandt, T. J., Conklin, N. B., Coutu, S., Duvernois, M. A., Ganel, O., Han, J. H., Jeon, J. A., Kim, K. C., Moo Hyun Lee, Lee, J. K., Lutz, L., Maestro, P., Malinin, A., Marrocchesi, P. S., Minnick, S., Mognet, S. I., Nam, S., Nutter, S., Park, I. H., Park, N. H., Seo, E. S., Sina, R., Swordy, S., Wakely, S., Wu, J., Yang, J., Yoon, Y. S., Zei, R., and Zinn, S. Y.

209. Performance of the transition radiation detector and the timing charge detector in the first flight of the CREAM instrument

Author

Coutu, S., Ahn, H. S., Allison, P., Bagliesi, M. G., Beatty, J. J., Gabriele Bigongiari, Boyle, P., Childers, J. T., Conklin, N. B., Duvernois, M. A., Ganel, O., Han, J. H., Hyun, H. J., Jeong, J. A., Kim, K., Lee, J. K., Lee, M. H., Lutz, L., Maestro, P., Malinine, A., Marrocchesi, P. S., Minnick, S., Mognet, S. I., Nam, S. W., Nutter, S., Park, N. H., Park, H., Park, I. H., Seo, E. S., Sina, R., Swordy, S., Wakely, S., Wu, J., Yang, J., Yoon, Y. S., Zei, R., and Zinn, S. Y.

Subjects
COSMIC-RAY ENERGETICS

210. VERITAS: Status and latest results

Author

Maier, G., Acciari, V. A., Amini, R., Blaylock, G., Bradbury, S. M., Buckley, J. H., Bugaev, V., Butt, Y., Byrum, K. L., Celik, O., Cesarini, A., Ciupik, L., Chow, Y. C. K., Cogan, P., Colin, P., Cui, W., Daniel, M. K., Dowdall, C., Dowkontt, P., Duke, C., Ergin, T., Falcone, A. D., Fegan, D. J., Fegan, S. J., Finley, J. P., Fortin, P., Fortson, L. F., Gall, D., Gibbs, K., Gillanders, G., Grube, J., Guenette, R., Gyuk, G., Hall, J., Hanna, D., Hays, E., Holder, J., Horan, D., Hughes, S. B., Hui, M. C., Humensky, T. B., Imran, A., Kaaret, P., Kenny, G. E., Kertzman, M., David Kieda, Kildea, J., Konopelko, A., Krawczynski, H., Krennrich, F., Lang, M. J., Lebohec, S., Lee, K., Manseri, H., Mccann, A., Mccutcheon, M., Millis, J., Moriarty, P., Mukherjee, R., Nagai, T., Niemiec, J., Ogden, P. A., Ong, R. A., Pandel, D., Perkins, J. S., Pizlo, F., Pohl, M., Quinn, J., Ragan, K., Reynolds, P. T., Roache, E., Rose, H. J., Schroedter, M., Sembroski, G. H., Smith, A. W., Steele, D., Swordy, S. P., Syson, A., Toner, J. A., Valcarcel, L., Vassiliev, V. V., Wagner, R., Wakely, S. P., Ward, J. E., Weekes, T. C., Weinstein, A., White, R. J., Williams, D. A., Wissel, S. A., Wood, M., and Zitzer, B.

211. GEANT4-based model of the CREAM timing charge scintillation detector

Author

Mognet, S. A. I., Ahn, H. S., Allison, P. S., Bagliesi, M. G., Beatty, J. J., Bigongiari, G., Boyle, P. J., Brandt, T. J., Childers, J. T., Conklin, N. B., Stephane Coutu, Duvernois, M. A., Ganel, O., Han, J. H., Hyun, H. J., Jeon, J. A., Kim, K. C., Lee, J. K., Lee, M. H., Lutz, L., Maestro, P., Malinin, A., Marrocchesi, P. S., Minnick, S. A., Nam, S., Nutter, S. L., Park, I. H., Park, N. H., Seo, E. S., Sina, R., Swordy, S. P., Wakely, S. P., Wu, J., Yang, J., Yoon, Y. S., Zei, R., and Zinn, S. Y.

212. Cosmic-ray positrons: Are there primary sources?

Author

Coutu, S., Barwick, S. W., Beatty, J. J., Bhattacharyya, A., Bower, C. R., Chaput, C. J., Nolfo, G. A., Duvernois, M. A., Labrador, A., Shawn McKee, Müller, D., Musser, J. A., Nutter, S. L., Schneider, E., Swordy, S. P., Tarlé, G., Tomasch, A. D., and Torbet, E.

213. The TrICE Prototype MAMPT Imaging Camera

Author

Byrum, K., Cunningham, J., Drake, G., Hays, E., Kieda, D., Kovacs, E., Magill, S., Nodulman, L., Northrop, R., Swordy, S., Wagner, R., Wakely, S. P., and Stephanie Wissel

Subjects
Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics
Abstract

The Track Imaging Cerenov Experiment (TrICE) is an air Cerenkov prototype telescope designed to use multi-anode photomultiplier to acheive a high angular resolution for measuring cosmic-ray composition at TeV-PeV energies. The TrICE camera, composed of 16 Hamamatsu R8900 16-channel multi-anode photomultiplier tubes, achieves 0.086 degree angular width per pixel over 1.5 degree wide field of view. We present a description of the TrICE camera design, calibration and performance., 4 pages, 6 figures, ICRC conference paper

214. Performance of the CREAM calorimeter module during its first flight of 42 days

Author

Lee, M. H., Ahn, H. S., Allison, P., Bagliesi, M. G., Bigongiari, G., Beatty, J. J., Boyle, P., Childers, J. T., Conklin, N. B., Coutu, S., Duvernois, M. A., Ganel, O., Han, J. H., Hyun, H. J., Jeon, J. A., Kim, K. C., Lee, J. K., Lutz, L., Maestro, P., Malinine, A., Minnick, S., Mognet, S. I., Nam, S. W., Nutter, S., Park, H., Park, I. H., Park, N. H., Seo, E. S., Sina, R., Swordy, S., Wakely, S., Wu, J., Yang, J., Yoon, Y. S., Zei, R., and Zinn, S. Y.

215. Insights Into the High-Energy Gamma-ray Emission of Markarian 501 from Extensive Multifrequency Observations in the Fermi Era

Author

A. Abdo, A., Ackermann, M., Ajello, M., Allafort, A., Baldini, L., Ballet, J., Barbiellini, G., G. Baring, M., 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, P., Buehler, R., Buson, S., A. Caliandro, G., A. Cameron, R., Cannon, A., A. Caraveo, P., Carrigan, S., M. Casandjian, J., Cavazzuti, E., Cecchi, C., Çelik, Ö., Charles, E., Chekhtman, A., C. Cheung, C., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Conrad, J., Cutini, S., D. Dermer, C., De Palma, F., Do Couto E Silva, E., S. Drell, P., Dubois, R., Dumora, D., Favuzzi, C., J. Fegan, S., C. Ferrara, E., B. Focke, W., Fortin, P., Frailis, M., Fuhrmann, L., Fukazawa, Y., 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., Guillemot, L., Guiriec, S., Hayashida, M., Hays, E., Horan, D., E. Hughes, R., Jóhannesson, G., S. Johnson, A., N. Johnson, W., Kadler, M., Kamae, T., Katagiri, H., Kataoka, J., Knödlseder, J., Kuss, M., Lande, J., Latronico, L., Lee, S.-H., 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., 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., Naumann-Godo, M., Nishino, S., 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., Pavlidou, V., J. Pearson, T., Pelassa, V., Pepe, M., Pesce-Rollins, M., Piron, F., A. Porter, T., Rainò, S., Rando, R., Razzano, M., Readhead, A., Reimer, A., Reimer, O., L. Richards, J., Ripken, J., Ritz, S., Roth, M., F.-W. Sadrozinski, H., Sanchez, D., Sander, A., D. Scargle, J., Sgrò, C., J. Siskind, E., D. Smith, P., Spandre, G., Spinelli, P., Stawarz, Ł., Stevenson, M., S. Strickman, M., V. Sokolovsky, K., J. Suson, D., Takahashi, H., Takahashi, T., Tanaka, T., B. Thayer, J., G. Thayer, J., J. Thompson, D., Tibaldo, L., F. Torres, D., Tosti, G., Tramacere, A., Uchiyama, Y., L. Usher, T., Vandenbroucke, J., Vasileiou, V., Vilchez, N., Vitale, V., P. Waite, A., Wang, P., E. Wehrle, A., L. Winer, B., S. Wood, K., Yang, Z., Ylinen, T., A. Zensus, J., Ziegler, M., Aleksić, J., A. Antonelli, L., Antoranz, P., Backes, M., A. Barrio, J., Becerra González, J., Bednarek, W., Berdyugin, A., Berger, K., Bernardini, E., Biland, A., Blanch, O., K. Bock, R., Boller, A., Bonnoli, G., Bordas, P., Borla Tridon, D., Bosch-Ramon, V., Bose, D., Braun, I., Bretz, T., Camara, M., Carmona, E., Carosi, A., Colin, P., Colombo, E., L. Contreras, J., Cortina, J., Covino, S., Dazzi, F., De Angelis, A., De Cea Del Pozo, E., De Lotto, B., De Maria, M., De Sabata, F., Delgado Mendez, C., Diago Ortega, A., Doert, M., Domínguez, A., Dominis Prester, D., Dorner, D., Doro, M., Elsaesser, D., Ferenc, D., V. Fonseca, M., Font, L., J. García López, R., Garczarczyk, M., Gaug, M., Giavitto, G., Godinovi, N., Hadasch, D., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Hose, J., Hrupec, D., Jogler, T., Klepser, S., Krähenbühl, T., Kranich, D., Krause, J., La Barbera, A., Leonardo, E., Lindfors, E., Lombardi, S., López, M., Lorenz, E., Majumdar, P., Makariev, E., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., M. Miranda, J., Mirzoyan, R., Miyamoto, H., Moldón, J., Moralejo, A., Nieto, D., Nilsson, K., Orito, R., Oya, I., Paoletti, R., M. Paredes, J., Partini, S., Pasanen, M., Pauss, F., G. Pegna, R., A. Perez-Torres, M., Persic, M., Peruzzo, J., Pochon, J., G. Prada Moroni, P., Prada, F., Prandini, E., Puchades, N., Puljak, I., Reichardt, T., Reinthal, R., Rhode, W., Ribó, M., Rico, J., Rissi, M., Rügamer, S., Saggion, A., Saito, K., Y. Saito, T., Salvati, M., Sánchez-Conde, M., Satalecka, K., Scalzotto, V., Scapin, V., Schultz, C., Schweizer, T., Shayduk, M., N. Shore, S., Sierpowska-Bartosik, A., Sillanpää, A., Sitarek, J., Sobczynska, D., Spanier, F., Spiro, S., Stamerra, A., Steinke, B., Storz, J., Strah, N., C. Struebig, J., Suric, T., O. Takalo, L., Tavecchio, F., Temnikov, P., Terzić, T., Tescaro, D., Teshima, M., Vankov, H., M. Wagner, R., Weitzel, Q., Zabalza, V., Zandanel, F., Zanin, R., A. Acciari, V., Arlen, T., Aune, T., Benbow, W., Boltuch, D., M. Bradbury, S., H. Buckley, J., Bugaev, V., Cesarini, A., Ciupik, L., Cui, W., Dickherber, R., Errando, M., Falcone, A., P. Finley, J., Finnegan, G., Fortson, L., Furniss, A., Galante, N., Gall, D., H. Gillanders, G., Godambe, S., Grube, J., Guenette, R., Gyuk, G., Hanna, D., Holder, J., Huang, D., M. Hui, C., B. Humensky, T., Kaaret, P., Karlsson, N., Kertzman, M., Kieda, D., Konopelko, A., Krawczynski, H., Krennrich, F., J. Lang, M., Maier, G., Mcarthur, S., Mccann, A., Mccutcheon, M., Moriarty, P., Mukherjee, R., Ong, R., N. Otte, A., Pandel, D., S. Perkins, J., Pichel, A., Pohl, M., Quinn, J., Ragan, K., C. Reyes, L., T. Reynolds, P., Roache, E., J. Rose, H., C. Rovero, A., Schroedter, M., H. Sembroski, G., D. Senturk, G., Steele, D., P. Swordy, S., Tešić, G., Theiling, M., Thibadeau, S., Varlotta, A., Vincent, S., P. Wakely, S., E. Ward, J., C. Weekes, T., Weinstein, A., Weisgarber, T., A. Williams, D., Wood, M., Zitzer, B., Villata, M., M. Raiteri, C., D. Aller, H., F. Aller, M., A. Arkharov, A., A. Blinov, D., Calcidese, P., P. Chen, W., V. Efimova, N., Kimeridze, G., S. Konstantinova, T., N. Kopatskaya, E., Koptelova, E., M. Kurtanidze, O., O. Kurtanidze, S., Lähteenmäki, A., M. Larionov, V., G. Larionova, E., V. Larionova, L., Ligustri, R., A. Morozova, D., G. Nikolashvili, M., A. Sigua, L., S. Troitsky, I., Angelakis, E., Capalbi, M., Carramiñana, A., Carrasco, L., Cassaro, P., De La Fuente, E., A. Gurwell, M., Y. Kovalev, Y., A. Kovalev, Yu., P. Krichbaum, T., A. Krimm, H., Leto, P., L. Lister, M., Maccaferri, G., W. Moody, J., Mori, Y., Nestoras, I., Orlati, A., Pagani, C., Pace, C., Pearson, R., Perri, M., G. Piner, B., B. Pushkarev, A., Ros, E., C. Sadun, A., Sakamoto, T., Tornikoski, M., Yatsu, Y., Zook, A., A. Abdo, A., Ackermann, M., Ajello, M., Allafort, A., Baldini, L., Ballet, J., Barbiellini, G., G. Baring, M., 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, P., Buehler, R., Buson, S., A. Caliandro, G., A. Cameron, R., Cannon, A., A. Caraveo, P., Carrigan, S., M. Casandjian, J., Cavazzuti, E., Cecchi, C., Çelik, Ö., Charles, E., Chekhtman, A., C. Cheung, C., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Conrad, J., Cutini, S., D. Dermer, C., De Palma, F., Do Couto E Silva, E., S. Drell, P., Dubois, R., Dumora, D., Favuzzi, C., J. Fegan, S., C. Ferrara, E., B. Focke, W., Fortin, P., Frailis, M., Fuhrmann, L., Fukazawa, Y., 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., Guillemot, L., Guiriec, S., Hayashida, M., Hays, E., Horan, D., E. Hughes, R., Jóhannesson, G., S. Johnson, A., N. Johnson, W., Kadler, M., Kamae, T., Katagiri, H., Kataoka, J., Knödlseder, J., Kuss, M., Lande, J., Latronico, L., Lee, S.-H., 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., 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., Naumann-Godo, M., Nishino, S., 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., Pavlidou, V., J. Pearson, T., Pelassa, V., Pepe, M., Pesce-Rollins, M., Piron, F., A. Porter, T., Rainò, S., Rando, R., Razzano, M., Readhead, A., Reimer, A., Reimer, O., L. Richards, J., Ripken, J., Ritz, S., Roth, M., F.-W. Sadrozinski, H., Sanchez, D., Sander, A., D. Scargle, J., Sgrò, C., J. Siskind, E., D. Smith, P., Spandre, G., Spinelli, P., Stawarz, Ł., Stevenson, M., S. Strickman, M., V. Sokolovsky, K., J. Suson, D., Takahashi, H., Takahashi, T., Tanaka, T., B. Thayer, J., G. Thayer, J., J. Thompson, D., Tibaldo, L., F. Torres, D., Tosti, G., Tramacere, A., Uchiyama, Y., L. Usher, T., Vandenbroucke, J., Vasileiou, V., Vilchez, N., Vitale, V., P. Waite, A., Wang, P., E. Wehrle, A., L. Winer, B., S. Wood, K., Yang, Z., Ylinen, T., A. Zensus, J., Ziegler, M., Aleksić, J., A. Antonelli, L., Antoranz, P., Backes, M., A. Barrio, J., Becerra González, J., Bednarek, W., Berdyugin, A., Berger, K., Bernardini, E., Biland, A., Blanch, O., K. Bock, R., Boller, A., Bonnoli, G., Bordas, P., Borla Tridon, D., Bosch-Ramon, V., Bose, D., Braun, I., Bretz, T., Camara, M., Carmona, E., Carosi, A., Colin, P., Colombo, E., L. Contreras, J., Cortina, J., Covino, S., Dazzi, F., De Angelis, A., De Cea Del Pozo, E., De Lotto, B., De Maria, M., De Sabata, F., Delgado Mendez, C., Diago Ortega, A., Doert, M., Domínguez, A., Dominis Prester, D., Dorner, D., Doro, M., Elsaesser, D., Ferenc, D., V. Fonseca, M., Font, L., J. García López, R., Garczarczyk, M., Gaug, M., Giavitto, G., Godinovi, N., Hadasch, D., Herrero, A., Hildebrand, D., Höhne-Mönch, D., Hose, J., Hrupec, D., Jogler, T., Klepser, S., Krähenbühl, T., Kranich, D., Krause, J., La Barbera, A., Leonardo, E., Lindfors, E., Lombardi, S., López, M., Lorenz, E., Majumdar, P., Makariev, E., Maneva, G., Mankuzhiyil, N., Mannheim, K., Maraschi, L., Mariotti, M., Martínez, M., Mazin, D., Meucci, M., M. Miranda, J., Mirzoyan, R., Miyamoto, H., Moldón, J., Moralejo, A., Nieto, D., Nilsson, K., Orito, R., Oya, I., Paoletti, R., M. Paredes, J., Partini, S., Pasanen, M., Pauss, F., G. Pegna, R., A. Perez-Torres, M., Persic, M., Peruzzo, J., Pochon, J., G. Prada Moroni, P., Prada, F., Prandini, E., Puchades, N., Puljak, I., Reichardt, T., Reinthal, R., Rhode, W., Ribó, M., Rico, J., Rissi, M., Rügamer, S., Saggion, A., Saito, K., Y. Saito, T., Salvati, M., Sánchez-Conde, M., Satalecka, K., Scalzotto, V., Scapin, V., Schultz, C., Schweizer, T., Shayduk, M., N. Shore, S., Sierpowska-Bartosik, A., Sillanpää, A., Sitarek, J., Sobczynska, D., Spanier, F., Spiro, S., Stamerra, A., Steinke, B., Storz, J., Strah, N., C. Struebig, J., Suric, T., O. Takalo, L., Tavecchio, F., Temnikov, P., Terzić, T., Tescaro, D., Teshima, M., Vankov, H., M. Wagner, R., Weitzel, Q., Zabalza, V., Zandanel, F., Zanin, R., A. Acciari, V., Arlen, T., Aune, T., Benbow, W., Boltuch, D., M. Bradbury, S., H. Buckley, J., Bugaev, V., Cesarini, A., Ciupik, L., Cui, W., Dickherber, R., Errando, M., Falcone, A., P. Finley, J., Finnegan, G., Fortson, L., Furniss, A., Galante, N., Gall, D., H. Gillanders, G., Godambe, S., Grube, J., Guenette, R., Gyuk, G., Hanna, D., Holder, J., Huang, D., M. Hui, C., B. Humensky, T., Kaaret, P., Karlsson, N., Kertzman, M., Kieda, D., Konopelko, A., Krawczynski, H., Krennrich, F., J. Lang, M., Maier, G., Mcarthur, S., Mccann, A., Mccutcheon, M., Moriarty, P., Mukherjee, R., Ong, R., N. Otte, A., Pandel, D., S. Perkins, J., Pichel, A., Pohl, M., Quinn, J., Ragan, K., C. Reyes, L., T. Reynolds, P., Roache, E., J. Rose, H., C. Rovero, A., Schroedter, M., H. Sembroski, G., D. Senturk, G., Steele, D., P. Swordy, S., Tešić, G., Theiling, M., Thibadeau, S., Varlotta, A., Vincent, S., P. Wakely, S., E. Ward, J., C. Weekes, T., Weinstein, A., Weisgarber, T., A. Williams, D., Wood, M., Zitzer, B., Villata, M., M. Raiteri, C., D. Aller, H., F. Aller, M., A. Arkharov, A., A. Blinov, D., Calcidese, P., P. Chen, W., V. Efimova, N., Kimeridze, G., S. Konstantinova, T., N. Kopatskaya, E., Koptelova, E., M. Kurtanidze, O., O. Kurtanidze, S., Lähteenmäki, A., M. Larionov, V., G. Larionova, E., V. Larionova, L., Ligustri, R., A. Morozova, D., G. Nikolashvili, M., A. Sigua, L., S. Troitsky, I., Angelakis, E., Capalbi, M., Carramiñana, A., Carrasco, L., Cassaro, P., De La Fuente, E., A. Gurwell, M., Y. Kovalev, Y., A. Kovalev, Yu., P. Krichbaum, T., A. Krimm, H., Leto, P., L. Lister, M., Maccaferri, G., W. Moody, J., Mori, Y., Nestoras, I., Orlati, A., Pagani, C., Pace, C., Pearson, R., Perri, M., G. Piner, B., B. Pushkarev, A., Ros, E., C. Sadun, A., Sakamoto, T., Tornikoski, M., Yatsu, Y., and Zook, A.

Abstract

We report on the gamma-ray activity of the blazar Mrk 501 during the first 480 days of Fermi operation. We find that the average LAT gamma-ray spectrum of Mrk 501 can be well described by a single power-law function with a photon index of 1.78 +/- 0.03. While we observe relatively mild flux variations with the Fermi-LAT (within less than a factor of 2), we detect remarkable spectral variability where the hardest observed spectral index within the LAT energy range is 1.52 +/- 0.14, and the softest one is 2.51 +/- 0.20. These unexpected spectral changes do not correlate with the measured flux variations above 0.3GeV. In this paper, we also present the first results from the 4.5-month-long multifrequency campaign (2009 March 15 - August 1) on Mrk 501, which included the VLBA, Swift, RXTE, MAGIC and VERITAS, the F-GAMMA, GASP-WEBT, and other collaborations and instruments which provided excellent temporal and energy coverage of the source throughout the entire campaign. The average spectral energy distribution of Mrk 501 is well described by the standard one-zone synchrotron self-Compton model. In the framework of this model, we find that the dominant emission region is characterized by a size <~ 0.1 pc (comparable within a factor of few to the size of the partially-resolved VLBA core at 15-43 GHz), and that the total jet power (~10^{44} erg s^{-1}) constitutes only a small fraction (~10^{-3}) of the Eddington luminosity. The energy distribution of the freshly-accelerated radiating electrons required to fit the time-averaged data has a broken power-law form in the energy range 0.3GeV-10TeV, with spectral indices 2.2 and 2.7 below and above the break energy of 20GeV. We argue that such a form is consistent with a scenario in which the bulk of the energy dissipation within the dominant emission zone of Mrk 501 is due to relativistic, proton-mediated shocks.

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222. MULTI-WAVELENGTH OBSERVATIONS OF THE FLARING GAMMA-RAY BLAZAR 3C 66A IN 2008 OCTOBER (vol 726, pg 43, 2011)

Author

Abdo, Aa, Ackermann, M, Ajello, M, Baldini, L, Ballet, J, Barbiellini, G, Bastieri, D, Bechtol, K, Bellazzini, R, Berenji, B, Blandford, Rd, Bonamente, E, Borgland, Aw, Bouvier, A, Bregeon, J, Brez, A, Brigida, M, Bruel, P, Buehler, R, Buson, S, Caliandro, Ga, Cameron, Ra, Caraveo, Pa, Carrigan, S, Casandjian, Jm, Cavazzuti, E, Cecchi, C, Celik, O, Charles, E, Chekhtman, A, Cheung, Cc, Chiang, J, Ciprini, S, Claus, R, Cohen Tanugi, J, Conrad, J, Costamante, L, Cutini, S, Davis, Ds, Dermer, Cd, de Palma, F, Digel, Sw, Silva, Ede, Drell, Ps, Dubois, R, Dumora, D, Favuzzi, Cecilia, Fegan, Sj, Fortin, P, Frailis, M, Fuhrmann, L, Fukazawa, Y, Funk, S, Fusco, P, Gargano, F, Gasparrini, D, Gehrels, N, Germani, S, Giglietto, Nicola, Giommi, P, Giordano, F, Giroletti, M, Glanzman, T, Godfrey, G, Grenier, Ia, Grove, Je, Guillemot, L, Guiriec, S, Hadasch, D, Hayashida, M, Hays, E, Horan, D, Hughes, Re, Itoh, R, Johannesson, G, Johnson, As, Johnson, Tj, Johnson, Wn, Kamae, T, Katagiri, H, Kataoka, J, Knodlseder, J, Kuss, M, Lande, J, Latronico, L, Lee, Sh, Longo, F, Loparco, F, Lott, B, Lovellette, Mn, Lubrano, P, Makeev, A, Mazziotta, Mn, Mcenery, Je, Mehault, J, Michelson, Pf, Mizuno, T, Moiseev, Aa, Monte, C, Monzani, Me, Morselli, A, Moskalenko, Iv, Murgia, S, Nakamori, T, Naumann Godo, M, Nestoras, I, Nolan, Pl, Norris, Jp, Nuss, E, Ohsugi, T, Okumura, A, Omodei, N, Orlando, E, Ormes, Jf, Ozaki, M, Paneque, D, Panetta, Jh, Parent, D, Pelassa, V, Pepe, M, Pesce Rollins, M, Piron, F, Porter, Ta, Raino, S, Rando, R, Razzano, M, Reimer, A, Reimer, O, Reyes, Lc, Ripken, J, Ritz, S, Romani, Rw, Roth, M, Sadrozinski, Hfw, Sanchez, D, Sander, A, Scargle, Jd, Sgro, C, Shaw, Ms, Smith, Pd, Spandre, G, Spinelli, P, Strickman, Ms, Suson, Dj, Takahashi, H, Tanaka, T, Thayer, Jb, Thayer, Jg, Thompson, Dj, Tibaldo, L, Torres, Df, Tosti, G, Tramacere, A, Usher, Tl, Vandenbroucke, J, Vasileiou, V, Vilchez, N, Vitale, V, Waite, Ap, Wang, P, Winer, Bl, Wood, Ks, Yang, Z, Ylinen, T, Ziegler, M, Acciari, Va, Aliu, E, Arlen, T, Aune, T, Beilicke, M, Benbow, W, Bottcher, M, Boltuch, D, Bradbury, Sm, Buckley, Jh, Bugaev, V, Byrum, K, Cannon, A, Cesarini, A, Christiansen, Jl, Ciupik, L, Cui, W, Perez, Id, Dickherber, R, Errando, M, Falcone, A, Finley, Jp, Finnegan, G, Fortson, L, Furniss, A, Galante, N, Gall, D, Gillanders, Gh, Godambe, S, Grube, J, Guenette, R, Gyuk, G, Hanna, D, Holder, J, Hui, Cm, Humensky, Tb, Imran, A, Kaaret, P, Karlsson, N, Kertzman, M, Kieda, D, Konopelko, A, Krawczynski, H, Krennrich, F, Lang, Mj, Lebohec, S, Maier, G, Mcarthur, S, Mccann, A, Mccutcheon, M, Moriarty, P, Mukherjee, R, Ong, Ra, Otte, An, Pandel, D, Perkins, Js, Pichel, A, Pohl, M, Quinn, J, Ragan, K, Reynolds, Pt, Roache, E, Rose, Hj, Schroedter, M, Sembroski, Gh, Senturk, Gd, Smith, Aw, Steele, D, Swordy, Sp, Tesic, G, Theiling, M, Thibadeau, S, Varlotta, A, Vassiliev, Vv, Vincent, S, Wakely, Sp, Ward, Je, Weekes, Tc, Weinstein, A, Weisgarber, T, Williams, Da, Wissel, S, Wood, M, Villata, M, Raiteri, Cm, Gurwell, Ma, Larionov, Vm, Kurtanidze, Om, Aller, Mf, Lahteenmaki, A, Chen, Wp, Berduygin, A, Agudo, I, Aller, Hd, Arkharov, Aa, Bach, U, Bachev, R, Beltrame, P, Benitez, E, Buemi, Cs, Dashti, J, Calcidese, P, Capezzali, D, Carosati, D, Da Rio, D, Di Paola, A, Diltz, C, Dolci, M, Dultzin, D, Forne, E, Gomez, Jl, Hagen Thorn VA, Halkola, A, Heidt, J, Hiriart, D, Hovatta, T, Hsiao, Hy, Jorstad, Sg, Kimeridze, Gn, Konstantinova, Ts, Kopatskaya, En, Koptelova, E, Leto, P, Ligustri, R, Lindfors, E, Lopez, Jm, Marscher, Ap, Mommert, M, Mujica, R, Nikolashvili, Mg, Nilsson, K, Palma, N, Pasanen, M, Roca Sogorb, M, Ros, Ja, Roustazadeh, P, Sadun, Ac, Saino, J, Sigua, La, Sillanaa, A, Sorcia, M, Takalo, Lo, Tornikoski, M, Trigilio, C, Turchetti, R, Umana, G, Belloni, T, Blake, Ch, Bloom, Js, Angelakis, E, Fumagalli, M, Hauser, M, Prochaska, Jx, Riquelme, D, Sievers, A, Starr, Dl, Tagliaferri, G, Ungerechts, H, Wagner, S, Zensus, Ja, Abdo, A. A., Ackermann, M., Ajello, M., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Berenji, B., Blandford, R. D., Bonamente, E., Borgland, A. W., Bouvier, A., Bregeon, J., Brez, A., Brigida, M., Bruel, P., Buehler, R., Buson, S., Caliandro, G. A., Cameron, R. A., Caraveo, P. A., Carrigan, S., Casandjian, J. M., Cavazzuti, E., Cecchi, C., Celik, Oe., Charles, E., Chekhtman, A., Cheung, C. C., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Conrad, J., Costamante, L., Cutini, S., Davis, D. S., Dermer, C. D., de Palma, F., Digel, S. W., do Couto e Silva, E., Drell, P. S., Dubois, R., Dumora, D., Favuzzi, C., Fegan, S. J., Fortin, P., Frailis, M., Fuhrmann, L., Fukazawa, Y., Funk, S., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giglietto, N., Giommi, P., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Grenier, I. A., Grove, J. E., Guillemot, L., Guiriec, S., Hadasch, D., Hayashida, M., Hays, E., Horan, D., Hughes, R. E., Itoh, R., Johannesson, G., Johnson, A. S., Johnson, T. J., Johnson, W. N., Kamae, T., Katagiri, H., Kataoka, J., Knoedlseder, J., Kuss, M., Lande, J., Latronico, L., Lee, S. -H., Longo, F., Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Makeev, A., Mazziotta, M. N., Mcenery, J. E., Mehault, J., Michelson, P. F., Mizuno, T., Moiseev, A. A., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nakamori, T., Naumann-Godo, M., Nestoras, I., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Okumura, A., 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., Porter, T. A., Raino, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Reyes, L. C., Ripken, J., Ritz, S., Romani, R. W., Roth, M., Sadrozinski, H. F. -W., Sanchez, D., Sander, A., Scargle, J. D., Sgro, C., Shaw, M. S., Smith, P. D., Spandre, G., Spinelli, P., Strickman, M. S., Suson, D. J., Takahashi, H., Tanaka, T., Thayer, J. B., Thayer, J. G., Thompson, D. J., Tibaldo, L., Torres, D. F., Tosti, G., Tramacere, A., Usher, T. L., Vandenbroucke, J., Vasileiou, V., Vilchez, N., Vitale, V., Waite, A. P., Wang, P., Winer, B. L., Wood, K. S., Yang, Z., Ylinen, T., Ziegler, M., Acciari, V. A., Aliu, E., Arlen, T., Aune, T., Beilicke, M., Benbow, W., Boettcher, M., Boltuch, D., Bradbury, S. M., Buckley, J. H., Bugaev, V., Byrum, K., Cannon, A., Cesarini, A., Christiansen, J. L., Ciupik, L., Cui, W., de la Calle Perez, I., Dickherber, R., Errando, M., Falcone, A., Finley, J. P., Finnegan, G., Fortson, L., Furniss, A., Galante, N., Gall, D., Gillanders, G. H., Godambe, S., Grube, J., Guenette, R., Gyuk, G., Hanna, D., Holder, J., Hui, C. M., Humensky, T. B., Imran, A., Kaaret, P., Karlsson, N., Kertzman, M., Kieda, D., Konopelko, A., Krawczynski, H., Krennrich, F., Lang, M. J., Lebohec, S., Maier, G., Mcarthur, S., Mccann, A., Mccutcheon, M., Moriarty, P., Mukherjee, R., Ong, R. A., Otte, A. N., Pandel, D., Perkins, J. S., Pichel, A., Pohl, M., Quinn, J., Ragan, K., Reynolds, P. T., Roache, E., Rose, H. J., Schroedter, M., Sembroski, G. H., Senturk G., Demet, Smith, A. W., Steele, D., Swordy, S. P., Tesic, G., Theiling, M., Thibadeau, S., Varlotta, A., Vassiliev, V. V., Vincent, S., Wakely, S. P., Ward, J. E., Weekes, T. C., Weinstein, A., Weisgarber, T., Williams, D. A., Wissel, S., Wood, M., Villata, M., Raiteri, C. M., Gurwell, M. A., Larionov, V. M., Kurtanidze, O. M., Aller, M. F., Laehteenmaeki, A., Chen, W. P., Berduygin, A., Agudo, I., Aller, H. D., Arkharov, A. A., Bach, U., Bachev, R., Beltrame, P., Benitez, E., Buemi, C. S., Dashti, J., Calcidese, P., Capezzali, D., Carosati, D., Da Rio, D., Di Paola, A., Diltz, C., Dolci, M., Dultzin, D., Forne, E., Gomez, J. L., Hagen-Thorn, V. A., Halkola, A., Heidt, J., Hiriart, D., Hovatta, T., Hsiao, H. -Y., Jorstad, S. G., Kimeridze, G. N., Konstantinova, T. S., Kopatskaya, E. N., Koptelova, E., Leto, P., Ligustri, R., Lindfors, E., Lopez, J. M., Marscher, A. P., Mommert, M., Mujica, R., Nikolashvili, M. G., Nilsson, K., Palma, N., Pasanen, M., Roca-Sogorb, M., Ros, J. A., Roustazadeh, P., Sadun, A. C., Saino, J., Sigua, L. A., Sillanaa, A., Sorcia, M., Takalo, L. O., Tornikoski, M., Trigilio, C., Turchetti, R., Umana, G., Belloni, T., Blake, C. H., Bloom, J. S., Angelakis, E., Fumagalli, M., Hauser, M., Prochaska, J. X., Riquelme, D., Sievers, A., Starr, D. L., Tagliaferri, G., Ungerechts, H., Wagner, S., and Zensus, J. A.

Published
2011

223. The discovery of g-ray emission from the Blazar RGB J0710+591

Author

Acciari1, V. A., Aliu2, E., Arlen3, T., Aune4, T., Bautista5, M., Beilicke6, M., Benbow1, W., Böttcher7, M., Boltuch8, D., Bradbury9, S. M., Buckley6, J. H., Bugaev6, V., Byrum10, K., Cannon11, A., Cesarini12, A., Ciupik13, L., Cui14, W., Dickherber6, R., Duke15, C., Falcone16, A., Finley14, J. P., Finnegan17, G., Fortson13, L., Furniss4, A., Galante1, N., Gall14, D., Gibbs1, K., Gillanders12, G. H., Godambe17, S., Grube11, J., Guenette5, R., Gyuk13, G., Hanna5, D., Holder8, J., Hui17, C. M., Humensky18, T. B., Imran19, A., Kaaret20, P., Karlsson13, N., Kertzman21, M., Kieda17, D., Konopelko22, A., Krawczynski6, H., Krennrich19, F., Lang12, M. J., Lamerato7, A., Lebohec17, S., Maier5, G., Mcarthur6, S., Mccann5, A., Mccutcheon5, M., Moriarty23, P., Mukherjee2, R., Ong3, R. A., Otte4, A. N., Pandel20, D., Perkins1, J. S., Petry24, D., Pichel25, A., Pohl19, M., Quinn11, J., Ragan5, K., Reyes26, L. C., Reynolds27, P. T., Roache1, E., Rose9, H. J., Roustazadeh7, P., Schroedter19, M., Sembroski14, G. H., Demet Senturk28, G., Smith10, A. W., Steele13, D., Swordy18, S. P., Tešić5, G., Theiling1, M., Thibadeau6, S., Varlotta14, A., Vassiliev3, V. V., Vincent17, S., Wagner10, R. G., Wakely18, S. P., Ward11, J. E., Weekes1, T. C., Weinstein3, A., Weisgarber18, T., Williams4, D. A., Wissel18, S., Wood3, M., Zitzer14, B., Ackermann29, M., Ajello29, M., Antolini30, E., Baldini32, L., Ballet33, J., Barbiellini34, G., Bastieri36, D., Bechtol29, K., Bellazzini32, R., Berenji29, B., Blandford29, R. D., Bloom29, E. D., Bonamente, Emanuele, Borgland29, A. W., Bouvier29, A., Bregeon32, J., Brigida38, M., Bruel40, P., Buehler29, R., Buson36, S., Caliandro41, G. A., Cameron29, R. A., Caraveo42, P. A., Carrigan37, S., Casandjian33, J. M., Cavazzuti43, E., Cecchi, Claudia, Çelik44, Ö., 46, 45, Charles29, E., Chekhtman47, A., Cheung47, C. C., Chiang29, J., Ciprini31, S., Claus29, R., Cohen Tanugi50, J., Conrad51, J., 84, 52, Dermer47, C. D., de Palma38, F., Silva29, E. do Couto e., Drell29, P. S., Dubois29, R., Dumora53, D., Farnier50, C., Favuzzi38, C., Fegan40, S. J., Fortin40, P., Frailis55, M., Fukazawa57, Y., Funk29, S., Fusco38, P., Gargano39, F., Gasparrini43, D., Gehrels44, N., Germani30, S., Giebels40, B., Giglietto38, N., Giordano38, F., Giroletti58, M., Glanzman29, T., Godfrey29, G., Grenier33, I. A., Grove47, J. E., Guiriec59, S., Hays44, E., Horan40, D., Hughes60, R. E., Jóhannesson29, G., Johnson29, A. S., Johnson47, W. N., Kamae29, T., Katagiri57, H., Kataoka61, J., Knödlseder62, J., Kuss32, M., Lande29, J., Latronico32, L., Lee29, S. H., Llena Garde51, M., Longo34, F., Loparco38, F., Lott53, B., Lovellette47, M. N., Lubrano30, P., Makeev47, A., Mazziotta39, M. N., Michelson29, P. F., Mitthumsiri29, W., Mizuno57, T., Moiseev45, A. A., Monte38, C., Monzani29, M. E., Morselli64, A., Moskalenko29, I. V., Murgia29, S., Nolan29, P. L., Norris65, J. P., Nuss50, E., Ohno66, M., Ohsugi67, T., Omodei29, N., Orlando68, E., Ormes65, J. F., Paneque29, D., Panetta29, J. H., Pelassa50, V., Pepe30, M., Pesce Rollins32, M., Piron50, F., Porter29, T. A., Rainò38, S., Rando36, R., Razzano32, M., Reimer69, A., Reimer69, O., Ripken51, J., Rodriguez41, A. Y., Roth70, M., Sadrozinski71, H. F. W., Sanchez40, D., Sander60, A., Scargle72, J. D., Sgrò32, C., Siskind73, E. J., Smith60, P. D., Spandre32, G., Spinelli38, P., Strickman47, M. S., Suson74, D. J., Takahashi67, H., Tanaka29, T., Thayer29, J. B., Thayer29, J. G., Thompson44, D. J., Tibaldo33, L., 37, 36, Torres41, D. F., Tosti, Gino, Tramacere29, A., 77, 76, Usher29, T. L., Vasileiou45, V., Vilchez62, N., Vitale64, V., Waite29, A. P., Wang29, P., Winer60, B. L., Wood47, K. S., Yang51, Z., Ylinen52, T., 80, 79, Ziegler71, 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), Acciari, V. A., Aliu, E., Arlen, T., Aune, T., Bautista, M., Beilicke, M., Benbow, W., Bottcher, M., Boltuch, D., Bradbury, S. M., Buckley, J. H., Bugaev, V., Byrum, K., Cannon, A., Cesarini, A., Ciupik, L., Cui, W., Dickherber, R., Duke, C., Falcone, A., Finley, J. P., Finnegan, G., Fortson, L., Furniss, A., Galante, N., Gall, D., Gibbs, K., Gillanders, G. H., Godambe, S., Grube, J., Guenette, R., Gyuk, G., Hanna, D., Holder, J., Hui, C. M., Humensky, T. B., Imran, A., Kaaret, P., Karlsson, N., Kertzman, M., Kieda, D., Konopelko, A., Krawczynski, H., Krennrich, F., Lang, M. J., Lamerato, A., Lebohec, S., Maier, G., Mcarthur, S., Mccann, A., Mccutcheon, M., Moriarty, P., Mukherjee, R., Ong, R. A., Otte, A. N., Pandel, D., Perkins, J. S., Petry, D., Pichel, A., Pohl, M., Quinn, J., Ragan, K., Reyes, L. C., Reynolds, P. T., Roache, E., Rose, H. J., Roustazadeh, P., Schroedter, M., Sembroski, G. H., Senturk, G. D., Smith, A. W., Steele, D., Swordy, S. P., Tesic, G., Theiling, M., Thibadeau, S., Varlotta, A., Vassiliev, V. V., Vincent, S., Wagner, R. G., Wakely, S. P., Ward, J. E., Weekes, T. C., Weinstein, A., Weisgarber, T., Williams, D. A., Wissel, S., Wood, M., Zitzer, B., Ackermann, M., Ajello, M., Antolini, E., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Berenji, B., Blandford, R. D., Bloom, E. D., Bonamente, E., Borgland, A. W., Bouvier, A., Bregeon, J., Brigida, M., Bruel, P., Buehler, R., Buson, S., Caliandro, G. A., Cameron, R. A., Caraveo, P. A., Carrigan, S., Casandjian, J. M., Cavazzuti, E., Cecchi, C., Celik, O., Charles, E., Chekhtman, A., Cheung, C. C., Chiang, J., Ciprini, S., Claus, R., Cohen Tanugi, J., Conrad, J., Dermer, C. D., Palma, F. d., Silva, E. D. E., Drell, P. S., Dubois, R., Dumora, D., Farnier, C., Favuzzi, C., Fegan, S. J., Fortin, P., Frailis, M., 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., Grenier, I. A., Grove, J. E., Guiriec, S., Hays, E., Horan, D., Hughes, R. E., Johannesson, G., Johnson, A. S., Johnson, W. N., Kamae, T., Katagiri, H., Kataoka, J., Knodlseder, J., Kuss, M., Lande, J., Latronico, L., Lee, S. H., Garde, M. L., Longo, Francesco, Loparco, F., Lott, B., Lovellette, M. N., Lubrano, P., Makeev, A., Mazziotta, M. N., 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., Nuss, E., Ohno, M., Ohsugi, T., Omodei, N., Orlando, E., Ormes, J. F., Paneque, D., Panetta, J. H., Pelassa, V., Pepe, M., Pesce Rollins, M., Piron, F., Porter, T. A., Raino, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Ripken, J., Rodriguez, A. Y., Roth, M., Sadrozinski, H. F. W., Sanchez, D., Sander, A., Scargle, J. D., Sgro, C., Siskind, E. J., Smith, P. D., Spandre, G., Spinelli, P., Strickman, M. S., Suson, D. J., Takahashi, H., Tanaka, T., Thayer, J. B., Thayer, J. G., Thompson, D. J., Tibaldo, L., Torres, D. F., Tosti, G., Tramacere, A., Usher, T. L., Vasileiou, V., Vilchez, N., Vitale, V., Waite, A. P., Wang, P., Winer, B. L., Wood, K. S., Yang, Z., Ylinen, T., Ziegler, M., 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
[SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Ciencias Físicas, bl-lacertae objects, Fermi satellite, Astrophysics, 7. Clean energy, 01 natural sciences, High Energy Gamma-ray Astronomy, law.invention, purl.org/becyt/ford/1 [https], atmospheric cherenkov telescopes, law, 010303 astronomy & astrophysics, BL Lacertae objects: individual (RGB J0710+591, Physics, High Energy Astrophysical Phenomena (astro-ph.HE), Spectral index, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Gamma ray, lac objects, astronomy, individual (RGB J0710+591, VER J0710+591) [BL Lacertae objects], galaxies [gamma rays], Spectral energy distribution, host galaxies, constraints, Astrophysics - High Energy Astrophysical Phenomena, CIENCIAS NATURALES Y EXACTAS, Astrophysics - Cosmology and Nongalactic Astrophysics, BL Lac object, VER J0710+591), [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, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Telescope, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], veritas, 0103 physical sciences, gamma rays: galaxies, BL Lacertae objects: individual (RGB J0710+591, VER J0710+591), Blazar, Astrophysics::Galaxy Astrophysics, 010308 nuclear & particles physics, bl lacertae objects: individual (rgb j0710+591, ver j0710+591), background-radiation, Astronomy and Astrophysics, Active Galactic Nuclei, purl.org/becyt/ford/1.3 [https], sample, Astronomía, Crab Nebula, 13. Climate action, Space and Planetary Science, Very High Energy Gamma-ray Astronomy, ddc:520, Fermi Gamma-ray Space Telescope
Abstract

The high-frequency-peaked BL Lacertae object RGB J0710+591 was observed in the very high-energy (VHE; E > 100 GeV) wave band by the VERITAS array of atmospheric Cherenkov telescopes. The observations, taken between 2008 December and 2009 March and totaling 22.1 hr, yield the discovery of VHE gamma rays from the source. RGB J0710+591 is detected at a statistical significance of 5.5 standard deviations (5.5σ) above the background, corresponding to an integral flux of (3.9 ± 0.8) × 10−12 cm−2 s−1 (3% of the Crab Nebula’s flux) above 300 GeV. The observed spectrum can be fit by a power law from 0.31 to 4.6 TeV with a photon spectral index of 2.69 ± 0.26stat ± 0.20sys. These data are complemented by contemporaneous multiwavelength data from the Fermi Large Area Telescope, the Swift X-ray Telescope, the Swift Ultra-Violet and Optical Telescope, and the Michigan–Dartmouth–MIT observatory. Modeling the broadband spectral energy distribution (SED) with an equilibrium synchrotron self-Compton model yields a good statistical fit to the data. The addition of an external-Compton component to the model does not improve the fit nor brings the system closer to equipartition. The combined Fermi and VERITAS data constrain the properties of the high-energy emission component of the source over 4 orders of magnitude and give measurements of the rising and falling sections of the SED. Fil: Acciari, V. A.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Aliu, E.. Columbia University; Estados Unidos Fil: Arlen, T.. University of California; Estados Unidos Fil: Aune, T.. University of California; Estados Unidos Fil: Bautista, M.. McGill University; Canadá Fil: Beilicke, M.. University of Washington; Estados Unidos Fil: Benbow, W.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Bottcher, M.. Ohio University; Estados Unidos Fil: Boltuch, D.. University of Delaware; Estados Unidos Fil: Bradbury, S. M.. University of Leeds; Reino Unido Fil: Buckley, J. H.. University of Washington; Estados Unidos Fil: Bugaev, V.. University of Washington; Estados Unidos Fil: Byrum, K.. Argonne National Laboratory; Estados Unidos Fil: Cannon, A.. University College Dublin; Irlanda Fil: Cesarini, A.. National University of Ireland Galway; Irlanda Fil: Ciupik, L.. Adler Planetarium and Astronomy Museum; Estados Unidos Fil: Cui, W.. Purdue University; Estados Unidos Fil: Dickherber, R.. University of Washington; Estados Unidos Fil: Duke, C.. Grinnell College; Estados Unidos Fil: Falcone, A.. State University Of Pennsylvania; Estados Unidos Fil: Finley, J. P.. Purdue University; Estados Unidos Fil: Finnegan, G.. University of Utah; Estados Unidos Fil: Fortson, L.. Adler Planetarium and Astronomy Museum; Estados Unidos Fil: Furniss, A.. University of California; Estados Unidos Fil: Galante, N.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Gall, D.. Purdue University; Estados Unidos Fil: Gibbs, K.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Gillanders, G. H.. National University of Ireland Galway; Irlanda Fil: Godambe, S.. University of Utah; Estados Unidos Fil: Pichel, Ana Carolina. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina Fil: The Veritas Collaboration.

Published
2010

224. THE JUNE 2008 FLARE OF MARKARIAN 421 FROM OPTICAL TO TeV ENERGIES

Author

I. Donnarumma, V. Vittorini, S. Vercellone, E. Del Monte, M. Feroci, F. D'Ammando, L. Pacciani, A. W. Chen, M. Tavani, A. Bulgarelli, A. Giuliani, F. Longo, G. Pucella, A. Argan, G. Barbiellini, F. Boffelli, P. Caraveo, P. W. Cattaneo, V. Cocco, E. Costa, G. De Paris, G. Di Cocco, Y. Evangelista, M. Fiorini, T. Froysland, M. Frutti, F. Fuschino, M. Galli, F. Gianotti, C. Labanti, I. Lapshov, F. Lazzarotto, P. Lipari, M. Marisaldi, M. Mastropietro, S. Mereghetti, E. Morelli, A. Morselli, A. Pellizzoni, F. Perotti, P. Picozza, G. Porrovecchio, M. Prest, M. Rapisarda, A. Rappoldi, A. Rubini, P. Soffitta, M. Trifoglio, A. Trois, E. Vallazza, A. Zambra, D. Zanello, C. Pittori, P. Santolamazza, F. Verrecchia, P. Giommi, S. Colafrancesco, L. Salotti, M. Villata, C. M. Raiteri, W. P. Chen, N. V. Efimova, B. Jordan, T. S. Konstantinova, E. Koptelova, O. M. Kurtanidze, V. M. Larionov, J. A. Ros, A. C. Sadun, H. Anderhub, L. A. Antonelli, P. Antoranz, M. Backes, C. Baixeras, S. Balestra, J. A. Barrio, H. Bartko, D. Bastieri, J. Becerra González, J. K. Becker, W. Bednarek, K. Berger, E. Bernardini, A. Biland, R. K. Bock, G. Bonnoli, P. Bordas, D. Borla Tridon, V. Bosch-Ramon, T. Bretz, I. Britvitch, M. Camara, E. Carmona, A. Chilingarian, S. Commichau, J. L. Contreras, J. Cortina, M. T. Costado, S. Covino, V. Curtef, F. Dazzi, A. De Angelis, E. De Cea del Pozo, R. de los Reyes, B. De Lotto, M. De Maria, F. De Sabata, C. Delgado Mendez, A. Dominguez, D. Dorner, M. Doro, D. Elsaesser, M. Errando, D. Ferenc, E. Fernández, R. Firpo, M. V. Fonseca, L. Font, N. Galante, R. J. García López, M. Garczarczyk, M. Gaug, F. Goebel, D. Hadasch, M. Hayashida, A. Herrero, D. Höhne-Mönch, J. Hose, C. C. Hsu, S. Huber, T. Jogler, D. Kranich, A. La Barbera, A. Laille, E. Leonardo, E. Lindfors, S. Lombardi, M. López, E. Lorenz, P. Majumdar, G. Maneva, N. Mankuzhiyil, K. Mannheim, L. Maraschi, M. Mariotti, M. Martínez, D. Mazin, M. Meucci, M. Meyer, J. M. Miranda, R. Mirzoyan, J. Moldón, M. Moles, A. Moralejo, D. Nieto, K. Nilsson, J. Ninkovic, I. Oya, R. Paoletti, J. M. Paredes, M. Pasanen, D. Pascoli, F. Pauss, R. G. Pegna, M. A. Perez-Torres, M. Persic, L. Peruzzo, F. Prada, E. Prandini, N. Puchades, A. Raymers, W. Rhode, M. Ribó, J. Rico, M. Rissi, A. Robert, S. Rügamer, A. Saggion, T. Y. Saito, M. Salvati, M. Sanchez-Conde, P. Sartori, K. Satalecka, V. Scalzotto, V. Scapin, T. Schweizer, M. Shayduk, K. Shinozaki, S. N. Shore, N. Sidro, A. Sierpowska-Bartosik, A. Sillanpää, J. Sitarek, D. Sobczynska, F. Spanier, A. Stamerra, L. S. Stark, L. Takalo, F. Tavecchio, P. Temnikov, D. Tescaro, M. Teshima, M. Tluczykont, D. F. Torres, N. Turini, H. Vankov, A. Venturini, V. Vitale, R. M. Wagner, W. Wittek, V. Zabalza, F. Zandanel, R. Zanin, J. Zapatero, V. Acciari, E. Aliu, T. Arlen, M. Beilicke, W. Benbow, S. M. Bradbury, J. H. Buckley, V. Bugaev, Y. Butt, K. Byrum, A. Cannon, A. Cesarini, Y. C. Chow, L. Ciupik, P. Cogan, P. Colin, W. Cui, M. K. Daniel, R. Dickherber, C. Duke, T. Ergin, S. J. Fegan, J. P. Finley, G. Finnegan, P. Fortin, A. Furniss, D. Gall, G. H. Gillanders, R. Guenette, G. Gyuk, J. Grube, D. Hanna, J. Holder, D. Horan, C. M. Hui, T. Brian Humensky, A. Imran, P. Kaaret, N. Karlsson, M. Kertzman, D. Kieda, J. Kildea, A. Konopelko, H. Krawczynski, F. Krennrich, M. J. Lang, S. LeBohec, G. Maier, A. McCann, M. McCutcheon, A. Milovanovic, P. Moriarty, T. Nagai, R. A. Ong, A. N. Otte, D. Pandel, J. S. Perkins, A. Pichel, M. Pohl, K. Ragan, L. C. Reyes, P. T. Reynolds, E. Roache, H. J. Rose, M. Schroedter, G. H. Sembroski, A. W. Smith, D. Steele, S. P. Swordy, M. Theiling, J. A. Toner, L. Valcarcel, A. Varlotta, S. P. Wakely, J. E. Ward, T. C. Weekes, A. Weinstein, D. A. Williams, S. Wissel, M. Wood, B. Zitzer, I., Donnarumma, V., Vittorini, S., Vercellone, E. D., Monte, M., Feroci, F., D'Ammando, L., Pacciani, A. W., Chen, M., Tavani, A., Bulgarelli, A., Giuliani, Longo, Francesco, G., Pucella, A., Argan, G., Barbiellini, F., Boffelli, P., Caraveo, P. W., Cattaneo, V., Cocco, E., Costa, G. D., Pari, G. D., Cocco, Y., Evangelista, M., Fiorini, T., Froysland, M., Frutti, F., Fuschino, M., Galli, F., Gianotti, C., Labanti, I., Lapshov, F., Lazzarotto, P., Lipari, M., Marisaldi, M., Mastropietro, S., Mereghetti, E., Morelli, A., Morselli, A., Pellizzoni, F., Perotti, P., Picozza, G., Porrovecchio, M., Prest, M., Rapisarda, A., Rappoldi, A., Rubini, P., Soffitta, M., Trifoglio, A., Troi, E., Vallazza, A., Zambra, D., Zanello, C., Pittori, P., Santolamazza, F., Verrecchia, P., Giommi, S., Colafrancesco, L., Salotti, M., Villata, C. M., Raiteri, W. P., Chen, N. V., Efimova, B., Jordan, T. S., Konstantinova, E., Koptelova, O. M., Kurtanidze, V. M., Larionov, J. A., Ro, A. C., Sadun, H., Anderhub, L. A., Antonelli, P., Antoranz, M., Backe, C., Baixera, S., Balestra, J. A., Barrio, H., Bartko, D., Bastieri, J. B., Gonzalez, J. K., Becker, W., Bednarek, K., Berger, E., Bernardini, A., Biland, R. K., Bock, G., Bonnoli, P., Borda, D. B., Tridon, V., Bosch Ramon, T., Bretz, I., Britvitch, M., Camara, E., Carmona, A., Chilingarian, S., Commichau, J. L., Contrera, J., Cortina, M. T., Costado, S., Covino, V., Curtef, F., Dazzi, A. D., Angeli, E. D., Del Pozo, R. D., Reye, B. D., Lotto, M. D., Maria, F. D., Sabata, C. D., Mendez, A., Dominguez, D., Dorner, M., Doro, D., Elsaesser, M., Errando, D., Ferenc, E., Fernandez, R., Firpo, M. V., Fonseca, L., Font, N., Galante, R. J. G., Lopez, M., Garczarczyk, M., Gaug, F., Goebel, D., Hadasch, M., Hayashida, A., Herrero, D., Hohne Monch, J., Hose, C. C., Hsu, S., Huber, T., Jogler, D., Kranich, A. L., Barbera, A., Laille, E., Leonardo, E., Lindfor, S., Lombardi, M., Lopez, E., Lorenz, P., Majumdar, G., Maneva, N., Mankuzhiyil, K., Mannheim, L., Maraschi, M., Mariotti, M., Martinez, D., Mazin, M., Meucci, M., Meyer, J. M., Miranda, R., Mirzoyan, J., Moldon, M., Mole, A., Moralejo, D., Nieto, K., Nilsson, J., Ninkovic, I., Oya, R., Paoletti, J. M., Parede, M., Pasanen, D., Pascoli, F., Pau, R. G., Pegna, M. A., Perez Torre, M., Persic, L., Peruzzo, F., Prada, E., Prandini, N., Puchade, A., Raymer, W., Rhode, M., Ribo, J., Rico, M., Rissi, A., Robert, S., Rugamer, A., Saggion, T. Y., Saito, M., Salvati, M., Sanchez Conde, P., Sartori, K., Satalecka, V., Scalzotto, V., Scapin, T., Schweizer, M., Shayduk, K., Shinozaki, S. N., Shore, N., Sidro, A., Sierpowska Bartosik, A., Sillanpaa, J., Sitarek, D., Sobczynska, F., Spanier, A., Stamerra, L. S., Stark, L., Takalo, F., Tavecchio, P., Temnikov, D., Tescaro, M., Teshima, M., Tluczykont, D. F., Torre, N., Turini, H., Vankov, A., Venturini, V., Vitale, R. M., Wagner, W., Wittek, V., Zabalza, F., Zandanel, R., Zanin, J., Zapatero, V., Acciari, E., Aliu, T., Arlen, M., Beilicke, W., Benbow, S. M., Bradbury, J. H., Buckley, V., Bugaev, Y., Butt, K., Byrum, A., Cannon, A., Cesarini, Y. C., Chow, L., Ciupik, P., Cogan, P., Colin, W., Cui, M. K., Daniel, R., Dickherber, C., Duke, T., Ergin, S. J., Fegan, J. P., Finley, G., Finnegan, P., Fortin, A., Furni, D., Gall, G. H., Gillander, R., Guenette, G., Gyuk, J., Grube, D., Hanna, J., Holder, D., Horan, C. M., Hui, T. B., Humensky, A., Imran, P., Kaaret, N., Karlsson, M., Kertzman, D., Kieda, J., Kildea, A., Konopelko, H., Krawczynski, F., Krennrich, M. J., Lang, S., Lebohec, G., Maier, A., Mccann, M., Mccutcheon, A., Milovanovic, P., Moriarty, T., Nagai, R. A., Ong, A. N., Otte, D., Pandel, J. S., Perkin, A., Pichel, M., Pohl, K., Ragan, L. C., Reye, P. T., Reynold, E., Roache, H. J., Rose, M., Schroedter, G. H., Sembroski, A. W., Smith, D., Steele, S. P., Swordy, M., Theiling, J. A., Toner, L., Valcarcel, A., Varlotta, S. P., Wakely, J. E., Ward, T. C., Weeke, A., Weinstein, D. A., William, S., Wissel, M., Wood, B., Zitzer, Donnarumma I, Vittorini V, Vercellone S, del Monte E, Feroci M, DAmmando F, Pacciani L, Chen A W, Tavani M, Bulgarelli A, Giuliani A, Longo F, Pucella G, Argan A, Barbiellini G, Boffelli F, Caraveo P, Cattaneo P W, Cocco V, Costa E, DeParis G, Di Cocco G, Evangelista Y, Fiorini M, Froysland T, Frutti M, Fuschino F, Galli M, Gianotti F, Labanti C, Lapshov I, Lazzarotto F, Lipari P, Marisaldi M, Mastropietro M, Mereghetti S, Morelli E, Morselli A, Pellizzoni A, Perotti F, Picozza P, Porrovecchio G, Prest M, Rapisarda M, Rappoldi A, Rubini A, Soffitta P, Trifoglio M, Trois A, Vallazza E, Zambra A, Zanello D, Pittori C, Santolamazza P, Verrecchia F, Giommi P, Colafrancesco S, Salotti L, Villata M, Raiteri C M, Chen W P, Efimova N V, Jordan B, Konstantinova T S, Koptelova E, Kurtanidze O M, Larionov V M, Ros J A, Sadun A C, Anderhub H, Antonelli L A, Antoranz P, Backes M, Baixeras C, Balestra S, Barrio J A, Bartko H, Bastieri D, González J Becerra, Becker J K, Bednarek W, Berger K, Bernardini E, Biland A, Bock R K, Bonnoli G, Bordas P, Tridon D Borla, Bosch-Ramon V, Bretz T, Britvitch I, Camara M, Carmona E, Chilingarian A, Commichau S, Contreras J L, Cortina J, Costado M T, Covino S, Curtef V, Dazzi F, DeAngelis A, DeCea del Pozo E, de los Reyes R, DeLotto B, DeMaria M, DeSabata F, Mendez C Delgado, Dominguez A, Dorner D, Doro M, Elsaesser D, Errando M, Ferenc D, Fernández E, Firpo R, Fonseca M V, Font L, Galante N, García López R J, Garczarczyk M, Gaug M, Goebel F, Hadasch D, Hayashida M, Herrero A, Höhne-Mönch D, Hose J, Hsu C C, Huber S, Jogler T, Kranich D, La Barbera A, Laille A, Leonardo E, Lindfors E, Lombardi S, López M, Lorenz E, Majumdar P, Maneva G, Mankuzhiyil N, Mannheim K, Maraschi L, Mariotti M, Martínez M, Mazin D, Meucci M, Meyer M, Miranda J M, Mirzoyan R, Moldón J, Moles M, Moralejo A, Nieto D, Nilsson K, Ninkovic J, Oya I, Paoletti R, Paredes J M, Pasanen M, Pascoli D, Pauss F, Pegna R G, Perez-Torres M A, Persic M, Peruzzo L, Prada F, Prandini E, Puchades N, Raymers A, Rhode W, Ribó M, Rico J, Rissi M, Robert A, Rügamer S, Saggion A, Saito T Y, Salvati M, Sanchez-Conde M, Sartori P, Satalecka K, Scalzotto V, Scapin V, Schweizer T, Shayduk M, Shinozaki K, Shore S N, Sidro N, Sierpowska-Bartosik A, Sillanpää A, Sitarek J, Sobczynska D, Spanier F, Stamerra A, Stark L S, Takalo L, Tavecchio F, Temnikov P, Tescaro D, Teshima M, Tluczykont M, Torres D F, Turini N, Vankov H, Venturini A, Vitale V, Wagner R M, Wittek W, Zabalza V, Zandanel F, Zanin R, Zapatero J, Acciari V, Aliu E, Arlen T, Beilicke M, Benbow W, Bradbury S M, Buckley J H, Bugaev V, Butt Y, Byrum K, Cannon A, Cesarini A, Chow Y C, Ciupik L, Cogan P, Colin P, Cui W, Daniel M K, Dickherber R, Duke C, Ergin T, Fegan S J, Finley J P, Finnegan G, Fortin P, Furniss A, Gall D, Gillanders G H, Guenette R, Gyuk G, Grube J, Hanna D, Holder J, Horan D, Hui C M, Humensky T Brian, Imran A, Kaaret P, Karlsson N, Kertzman M, Kieda D, Kildea J, Konopelko A, Krawczynski H, Krennrich F, Lang M J, LeBohec S, Maier G, McCann A, McCutcheon M, Milovanovic A, Moriarty P, Nagai T, Ong R A, Otte A N, Pandel D, Perkins J S, Pichel A, Pohl M, Ragan K, Reyes L C, Reynolds P T, Roache E, Rose H J, Schroedter M, Sembroski G H, Smith A W, Steele D, Swordy S P, Theiling M, Toner J A, Valcarcel L, Varlotta A, Wakely S P, Ward J E, Weekes T C, Weinstein A, Williams D A, Wissel S, Wood M, and Zitzer B

Subjects
campaign, Raigs còsmics, BL Lacertae: individual: Mrk421, galaxies: jets, X-Rays: Galaxies, gamma rays: observations, radiation mechanisms: nonthermal, bl-lacertae objects, blazars, Flux, Astrophysics, 01 natural sciences, 7. Clean energy, High Energy Gamma-ray Astronomy, law.invention, Raigs gamma, law, optical, MAGIC (telescope), Agile, blazr, X-ray, gamma, high energy observation, 010303 astronomy & astrophysics, webt, Physics, x-ray-spectra, Astrophysics (astro-ph), gamma-rays, lac objects, xmm-newton, Spectral energy distribution, Electrónica, Física nuclear, Raigs X, Electricidad, Flare, outburst, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, 0103 physical sciences, X-rays, BL Lacertae objects: individual (Mrk 421) – gamma rays: observations – galaxies: jets – radiation mechanisms: non-thermal – X-rays: galaxies, Blazar, Cosmic rays, 010308 nuclear & particles physics, Gamma rays, Astronomy and Astrophysics, Active Galactic Nuclei, radiation mechanisms: non-thermal, Light curve, Galaxies, Galàxies, MAGIC telescope, Space and Planetary Science, Very High Energy Gamma-ray Astronomy, ddc:520, AGILE satellite, bl lacertae objects: individual (mrk 421), Energy (signal processing), Lepton
Abstract

We present optical, X-ray, high energy ($\lessapprox 30$ GeV) and very high energy ($\gtrapprox 100$ GeV; VHE) observations of the high-frequency peaked blazar Mrk 421 taken between 2008 May 24 and June 23. A high energy $\gamma$-ray signal was detected by AGILE with \sqrt{TS}=4.5 on June 9--15, with $F(E>100 \mathrm{MeV})= 42^{+14}_{-12}\times 10^{-8}$ photons cm$^{-2}$ s$^{-1}$. This flaring state is brighter than the average flux observed by EGRET by a factor of $\sim$3, but still consistent with the highest EGRET flux. In hard X-rays (20-60 keV) SuperAGILE resolved a 5-day flare (June 9-15) peaking at $\sim$ 55 mCrab. SuperAGILE, RXTE/ASM and Swift/BAT data show a correlated flaring structure between soft and hard X-rays. Hints of the same flaring behavior are also detected in the simultaneous optical data provided by the GASP-WEBT. A Swift/XRT observation near the flaring maximum revealed the highest 2-10 keV flux ever observed from this source, of 2.6 $\times 10^{-9}$ erg cm$^{-2}$ s$^{-1}$ (i.e. > 100 mCrab). A peak synchrotron energy of $\sim$3 keV was derived, higher than typical values of $\sim$0.5-1 keV. VHE observations with MAGIC and VERITAS on June 6-8 show the flux peaking in a bright state, well correlated with the X-rays. This extraordinary set of simultaneous data, covering a twelve-decade spectral range, allowed for a deep analysis of the spectral energy distribution as well as of correlated light curves. The $\gamma$-ray flare can be interpreted within the framework of the synchrotron self-Compton model in terms of a rapid acceleration of leptons in the jet., Comment: accepted for publication in ApJL, 7 pages, 2 figures, 1 table

Published
2009

226. Radio imaging of the very-high-energy gamma-ray emission region in the central engine of a radio galaxy.

Author

Acciari VA, Aliu E, Arlen T, Bautista M, Beilicke M, Benbow W, Bradbury SM, Buckley JH, Bugaev V, Butt Y, Byrum K, Cannon A, Celik O, Cesarini A, Chow YC, Ciupik L, Cogan P, Cui W, Dickherber R, Fegan SJ, Finley JP, Fortin P, Fortson L, Furniss A, Gall D, Gillanders GH, Grube J, Guenette R, Gyuk G, Hanna D, Holder J, Horan D, Hui CM, Humensky TB, Imran A, Kaaret P, Karlsson N, Kieda D, Kildea J, Konopelko A, Krawczynski H, Krennrich F, Lang MJ, LeBohec S, Maier G, McCann A, McCutcheon M, Millis J, Moriarty P, Ong RA, Otte AN, Pandel D, Perkins JS, Petry D, Pohl M, Quinn J, Ragan K, Reyes LC, Reynolds PT, Roache E, Roache E, Rose HJ, Schroedter M, Sembroski GH, Smith AW, Swordy SP, Theiling M, Toner JA, Varlotta A, Vincent S, Wakely SP, Ward JE, Weekes TC, Weinstein A, Williams DA, Wissel S, Wood M, Walker RC, Davies F, Hardee PE, Junor W, Ly C, Aharonian F, Akhperjanian AG, Anton G, Barres de Almeida U, Bazer-Bachi AR, Becherini Y, Behera B, Bernlöhr K, Bochow A, Boisson C, Bolmont J, Borrel V, Brucker J, Brun F, Brun P, Bühler R, Bulik T, Büsching I, Boutelier T, Chadwick PM, Charbonnier A, Chaves RC, Cheesebrough A, Chounet LM, Clapson AC, Coignet G, Dalton M, Daniel MK, Davids ID, Degrange B, Deil C, Dickinson HJ, Djannati-Ataï A, Domainko W, Drury LO, Dubois F, Dubus G, Dyks J, Dyrda M, Egberts K, Emmanoulopoulos D, Espigat P, Farnier C, Feinstein F, Fiasson A, Förster A, Fontaine G, Füssling M, Gabici S, Gallant YA, Gérard L, Gerbig D, Giebels B, Glicenstein JF, Glück B, Goret P, Göhring D, Hauser D, Hauser M, Heinz S, Heinzelmann G, Henri G, Hermann G, Hinton JA, Hoffmann A, Hofmann W, Holleran M, Hoppe S, Horns D, Jacholkowska A, de Jager OC, Jahn C, Jung I, Katarzyński K, Katz U, Kaufmann S, Kendziorra E, Kerschhaggl M, Khangulyan D, Khélifi B, Keogh D, Kluźniak W, Kneiske T, Komin N, Kosack K, Lamanna G, Lenain JP, Lohse T, Marandon V, Martin JM, Martineau-Huynh O, Marcowith A, Maurin D, McComb TJ, Medina MC, Moderski R, Moulin E, Naumann-Godo M, de Naurois M, Nedbal D, Nekrassov D, Nicholas B, Niemiec J, Nolan SJ, Ohm S, Olive JF, de Oña Wilhelmi E, Orford KJ, Ostrowski M, Panter M, Paz Arribas M, Pedaletti G, Pelletier G, Petrucci PO, Pita S, Pühlhofer G, Punch M, Quirrenbach A, Raubenheimer BC, Raue M, Rayner SM, Renaud M, Rieger F, Ripken J, Rob L, Rosier-Lees S, Rowell G, Rudak B, Rulten CB, Ruppel J, Sahakian V, Santangelo A, Schlickeiser R, Schöck FM, Schröder R, Schwanke U, Schwarzburg S, Schwemmer S, Shalchi A, Sikora M, Skilton JL, Sol H, Spangler D, Stawarz Ł, Steenkamp R, Stegmann C, Stinzing F, Superina G, Szostek A, Tam PH, Tavernet JP, Terrier R, Tibolla O, Tluczykont M, van Eldik C, Vasileiadis G, Venter C, Venter L, Vialle JP, Vincent P, Vivier M, Völk HJ, Volpe F, Wagner SJ, Ward M, Zdziarski AA, Zech A, Anderhub H, Antonelli LA, Antoranz P, Backes M, Baixeras C, Balestra S, Barrio JA, Bastieri D, Becerra González J, Becker JK, Bednarek W, Berger K, Bernardini E, Biland A, Bock RK, Bonnoli G, Bordas P, Borla Tridon D, Bosch-Ramon V, Bose D, Braun I, Bretz T, Britvitch I, Camara M, Carmona E, Commichau S, Contreras JL, Cortina J, Costado MT, Covino S, Curtef V, Dazzi F, De Angelis A, De Cea del Pozo E, Delgado Mendez C, De los Reyes R, De Lotto B, De Maria M, De Sabata F, Dominguez A, Dorner D, Doro M, Elsaesser D, Errando M, Ferenc D, Fernández E, Firpo R, Fonseca MV, Font L, Galante N, García López RJ, Garczarczyk M, Gaug M, Goebel F, Hadasch D, Hayashida M, Herrero A, Hildebrand D, Höhne-Mönch D, Hose J, Hsu CC, Jogler T, Kranich D, La Barbera A, Laille A, Leonardo E, Lindfors E, Lombardi S, Longo F, López M, Lorenz E, Majumdar P, Maneva G, Mankuzhiyil N, Mannheim K, Maraschi L, Mariotti M, Martínez M, Mazin D, Meucci M, Miranda JM, Mirzoyan R, Miyamoto H, Moldón J, Moles M, Moralejo A, Nieto D, Nilsson K, Ninkovic J, Oya I, Paoletti R, Paredes JM, Pasanen M, Pascoli D, Pauss F, Pegna RG, Perez-Torres MA, Persic M, Peruzzo L, Prada F, Prandini E, Puchades N, Reichardt I, Rhode W, Ribó M, Rico J, Rissi M, Robert A, Rügamer S, Saggion A, Saito TY, Salvati M, Sanchez-Conde M, Satalecka K, Scalzotto V, Scapin V, Schweizer T, Shayduk M, Shore SN, Sidro N, Sierpowska-Bartosik A, Sillanpää A, Sitarek J, Sobczynska D, Spanier F, Stamerra A, Stark LS, Takalo L, Tavecchio F, Temnikov P, Tescaro D, Teshima M, Torres DF, Turini N, Vankov H, Wagner RM, Zabalza V, Zandanel F, Zanin R, and Zapatero J

Abstract

The accretion of matter onto a massive black hole is believed to feed the relativistic plasma jets found in many active galactic nuclei (AGN). Although some AGN accelerate particles to energies exceeding 10(12) electron volts and are bright sources of very-high-energy (VHE) gamma-ray emission, it is not yet known where the VHE emission originates. Here we report on radio and VHE observations of the radio galaxy Messier 87, revealing a period of extremely strong VHE gamma-ray flares accompanied by a strong increase of the radio flux from its nucleus. These results imply that charged particles are accelerated to very high energies in the immediate vicinity of the black hole.

Published
2009
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