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3. Activity of main-belt comet 324P/La Sagra.

Author

Mastropietro, M., Kim, Y., Hsieh, H. H., and Agarwal, J.

Subjects
*SMALL solar system bodies, *OPTICAL telescopes, *COMETS, *ASTEROIDS, *THERMAL properties
Abstract

Aims. We study the activity evolution of the main-belt comet 324P/La Sagra over time and the properties of its emitted dust. Methods. We performed aperture photometry on images taken by a wide range of telescopes at optical and thermal infrared wavelengths between 2010 and 2021. We derived the combined scattering cross section of the nucleus and dust (when present) as a function of time, and we derived the thermal emission properties. Results. Fitting an IAU H-G phase function to the data obtained when 324P was likely inactive, we derived an absolute nucleus magnitude HR = (18.4 ± 0.5) mag using G = 0.15 ± 0.12. The activity of 324P/La Sagra during the 2015 perihelion passage has significantly decreased compared to the previous perihelion passage in 2010, and it decreased even further during the 2021 perihelion passage. This decrease in activity may be attributed to mantling or to the depletion of volatile substances. The A f ρ profile analysis of the coma of the main-belt comet suggests a near-perihelion transition from a lower-activity pre-perihelion to a higher-activity post-perihelion steady state. We calculate a dust geometric albedo in the range of (2–15)%, which prevents us from constraining the spectral type of 324P/La Sagra, but we found an indication of dust superheating at 4.5 μm. [ABSTRACT FROM AUTHOR]

Published
2024
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5. Characterization of a tagged [formula omitted] beam line at the [formula omitted] Beam Test Facility

Author

Cattaneo, P.W., Argan, A., Boffelli, F., Bulgarelli, A., Buonomo, B., Chen, A.W., D'Ammando, F., Foggetta, L., Froysland, T., Fuschino, F., Galli, M., Gianotti, F., Giuliani, A., Longo, F., Marisaldi, M., Mazzitelli, G., Pellizzoni, A., Prest, M., Pucella, G., Quintieri, L., Rappoldi, A., Tavani, M., Trifoglio, M., Trois, A., Valente, P., Vallazza, E., Vercellone, S., Zambra, A., Barbiellini, G., Caraveo, P., Cocco, V., Costa, E., De Paris, G., Del Monte, E., Di Cocco, G., Donnarumma, I., Evangelista, Y., Feroci, M., Ferrari, A., Fiorini, M., Labanti, C., Lapshov, I., Lazzarotto, F., Lipari, P., Mastropietro, M., Mereghetti, S., Morelli, E., Moretti, E., Morselli, A., Pacciani, L., Perotti, F., Piano, G., Picozza, P., Pilia, M., Porrovecchio, G., Rapisarda, M., Rubini, A., Sabatini, S., Soffitta, P., Striani, E., Vittorini, V., Zanello, D., Colafrancesco, S., Giommi, P., Pittori, C., Santolamazza, P., Verrecchia, F., and Salotti, L.

Published
2012
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6. Detection of Gamma-Ray Emission from the Vela Pulsar Wind Nebula with AGILE

Author

Pellizzoni, A., Trois, A., Tavani, M., Pilia, M., Giuliani, A., Pucella, G., Esposito, P., Sabatini, S., Piano, G., Argan, A., Barbiellini, G., Bulgarelli, A., Burgay, M., Caraveo, P., Cattaneo, P. W., Chen, A. W., Cocco, V., Contessi, T., Costa, E., Del Monte, E., D'Ammando, F., De Paris, G., Di Cocco, G., Di Persio, G., Donnarumma, I., Evangelista, Y., Feroci, M., Ferrari, A., Fiorini, M., Fuschino, F., Galli, M., Gianotti, F., Hotan, A., Labanti, C., Lipari, P., Longo, F., Marisaldi, M., Mastropietro, M., Mereghetti, S., Moretti, E., Morselli, A., Pacciani, L., Palfreyman, J., Perotti, F., Picozza, P., Pittori, C., Possenti, A., Prest, M., Rapisarda, M., Rappoldi, A., Rossi, E., Rubini, A., Santolamazza, P., Scalise, E., Soffitta, P., Striani, E., Trifoglio, M., Vallazza, E., Vercellone, S., Verrecchia, F., Vittorini, V., Zambra, A., Zanello, D., Giommi, P., Colafrancesco, S., Antonelli, A., Salotti, L., D'Amico, N., and Bignami, G. F.

Published
2010
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7. Room-temperature spectroscopic performance of a very-large area silicon drift detector

Author

Zampa, G., Campana, R., Feroci, M., Vacchi, A., Bonvicini, V., Del Monte, E., Evangelista, Y., Fuschino, F., Labanti, C., Marisaldi, M., Muleri, F., Pacciani, L., Rapisarda, M., Rashevsky, A., Rubini, A., Soffitta, P., Zampa, N., Baldazzi, G., Costa, E., Donnarumma, I., Grassi, M., Lazzarotto, F., Malcovati, P., Mastropietro, M., Morelli, E., and Picolli, L.

Published
2011
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8. Imaging performance of a large-area Silicon Drift Detector for X-ray astronomy

Author

Campana, R., Zampa, G., Feroci, M., Vacchi, A., Bonvicini, V., Del Monte, E., Evangelista, Y., Fuschino, F., Labanti, C., Marisaldi, M., Muleri, F., Pacciani, L., Rapisarda, M., Rashevsky, A., Rubini, A., Soffitta, P., Zampa, N., Baldazzi, G., Costa, E., Donnarumma, I., Grassi, M., Lazzarotto, F., Malcovati, P., Mastropietro, M., Morelli, E., and Picolli, L.

Published
2011
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9. First results about on-ground calibration of the silicon tracker for the AGILE satellite

Author

Cattaneo, P.W., Argan, A., Boffelli, F., Bulgarelli, A., Buonomo, B., Chen, A.W., D’Ammando, F., Froysland, T., Fuschino, F., Galli, M., Gianotti, F., Giuliani, A., Longo, F., Marisaldi, M., Mazzitelli, G., Pellizzoni, A., Prest, M., Pucella, G., Quintieri, L., Rappoldi, A., Tavani, M., Trifoglio, M., Trois, A., Valente, P., Vallazza, E., Vercellone, S., Zambra, A., Barbiellini, G., Caraveo, P., Cocco, V., Costa, E., De Paris, G., Del Monte, E., Di Cocco, G., Donnarumma, I., Evangelista, Y., Feroci, M., Ferrari, A., Fiorini, M., Labanti, C., Lapshov, I., Lazzarotto, F., Lipari, P., Mastropietro, M., Mereghetti, S., Morelli, E., Moretti, E., Morselli, A., Pacciani, L., Perotti, F., Piano, G., Picozza, P., Pilia, M., Porrovecchio, G., Rapisarda, M., Rubini, A., Sabatini, S., Soffitta, P., Striani, E., Vittorini, V., Zanello, D., Colafrancesco, S., Giommi, P., Pittori, C., Santolamazza, P., Verrecchia, F., and Salotti, L.

Published
2011
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10. The flaring blazars of the first 1.5 years of the AGILE mission

Author

Pacciani, L., Bulgarelli, A., Chen, A.W., D’Ammando, F., Donnarumma, I., Giuliani, A., Longo, F., Pucella, G., Tavani, M., Vercellone, S., Vittorini, V., Argan, A., Barbiellini, G., Boffelli, F., Caraveo, P., Cattaneo, P.W., Cocco, V., Costa, E., De Paris, G., Del Monte, E., Di Cocco, G., Evangelista, Y., Ferrari, A., Feroci, M., Fiorini, M., Froysland, T., Fuschino, F., Galli, M., Gianotti, F., Labanti, C., Lapshov, I., Lazzarotto, F., Lipari, P., Marisaldi, M., Mastropietro, M., Mereghetti, S., Morelli, E., Moretti, E., Morselli, A., Pellizzoni, A., Perotti, F., Piano, G., Picozza, P., Pilia, M., Porrovecchio, G., Prest, M., Rapisarda, M., Rappoldi, A., Rubini, A., Sabatini, S., Soffitta, P., Trifoglio, M., Trois, A., Vallazza, E., Zambra, A., Zanello, D., Antonelli, L.A., Colafrancesco, S., Giommi, P., Pittori, C., Verrecchia, F., Santolamazza, P., and Salotti, L.

Published
2011
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11. Galactic sources science with AGILE: The case of the Carina Region

Author

Sabatini, S., Tavani, M., Pian, E., Bulgarelli, A., Caraveo, P., Viotti, R., Corcoran, M.F., Giuliani, A., Pittori, C., Verrecchia, F., Vercellone, S., Mereghetti, S., Argan, A., Barbiellini, G., Boffelli, F., Cattaneo, P.W., Chen, A.W., Cocco, V., D’Ammando, F., Costa, E., Paris, G. De, Monte, E. Del, Cocco, G. Di, Donnarumma, I., Evangelista, Y., Ferrari, A., Feroci, M., Fiorini, M., Froysland, T., Fuschino, F., Galli, M., Gianotti, F., Labanti, C., Lapshov, I., Lazzarotto, F., Lipari, P., Longo, F., Marisaldi, M., Mastropietro, M., Morelli, E., Moretti, E., Morselli, A., Pacciani, L., Pellizzoni, A., Perotti, F., Piano, G., Picozza, P., Pilia, M., Porrovecchio, G., Pucella, G., Prest, M., Rapisarda, M., Rappoldi, A., Rubini, A., Soffitta, P., Trifoglio, M., Trois, A., Vallazza, E., Vittorini, V., Zambra, A., Zanello, D., Santolamazza, P., Giommi, P., Colafrancesco, S., Antonelli, L.A., and Salotti, L.

Published
2011
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12. Preliminary results on TeV sources search with AGILE

Author

Rappoldi, A., Longo, F., Argan, A., Barbiellini, G., Boffelli, F., Bulgarelli, A., Caraveo, P., Cattaneo, P.W., Chen, A.W., Cocco, V., Colafrancesco, S., Costa, E., D’ Ammando, F., De Paris, G., Del Monte, E., Di Cocco, G., Donnarumma, I., Evangelista, Y., Ferrari, A., Feroci, M., Fiorini, M., Froysland, T., Fuschino, F., Galli, M., Gianotti, F., Giommi, P., Giuliani, A., Labanti, C., Lapshov, I., Lazzarotto, F., Lipari, P., Marisaldi, M., Mastropietro, M., Mereghetti, S., Morelli, E., Moretti, E., Morselli, A., Pacciani, L., Pellizzoni, A., Perotti, F., Piano, G., Picozza, P., Pilia, M., Pittori, C., Porrovecchio, G., Prest, M., Pucella, G., Rapisarda, M., Rubini, A., Sabatini, S., Salotti, L., Santolamazza, P., Soffitta, P., Striani, E., Tavani, M., Trifoglio, M., Trois, A., Vallazza, E., Verrecchia, F., Vercellone, S., Vittorini, V., Zambra, A., and Zanello, D.

Published
2011
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13. The Large Observatory for X-ray Timing (LOFT)

Author

Feroci, M., Stella, L., van der Klis, M., Courvoisier, T. J. -L., Hernanz, M., Hudec, R., Santangelo, A., Walton, D., Zdziarski, A., Barret, D., Belloni, T., Braga, J., Brandt, S., Budtz-Jørgensen, C., Campana, S., den Herder, J. -W., Huovelin, J., Israel, G. L., Pohl, M., Ray, P., Vacchi, A., Zane, S., Argan, A., Attinà, P., Bertuccio, G., Bozzo, E., Campana, R., Chakrabarty, D., Costa, E., De Rosa, A., Del Monte, E., Di Cosimo, S., Donnarumma, I., Evangelista, Y., Haas, D., Jonker, P., Korpela, S., Labanti, C., Malcovati, P., Mignani, R., Muleri, F., Rapisarda, M., Rashevsky, A., Rea, N., Rubini, A., Tenzer, C., Wilson-Hodge, C., Winter, B., Wood, K., Zampa, G., Zampa, N., Abramowicz, M. A., Alpar, M. A., Altamirano, D., Alvarez, J. M., Amati, L., Amoros, C., Antonelli, L. A., Artigue, R., Azzarello, P., Bachetti, M., Baldazzi, G., Barbera, M., Barbieri, C., Basa, S., Baykal, A., Belmont, R., Boirin, L., Bonvicini, V., Burderi, L., Bursa, M., Cabanac, C., Cackett, E., Caliandro, G. A., Casella, P., Chaty, S., Chenevez, J., Coe, M. J., Collura, A., Corongiu, A., Covino, S., Cusumano, G., D’Amico, F., Dall’Osso, S., De Martino, D., De Paris, G., Di Persio, G., Di Salvo, T., Done, C., Dovčiak, M., Drago, A., Ertan, U., Fabiani, S., Falanga, M., Fender, R., Ferrando, P., Della Monica Ferreira, D., Fraser, G., Frontera, F., Fuschino, F., Galvez, J. L., Gandhi, P., Giommi, P., Godet, O., Göǧüş, E., Goldwurm, A., Götz, D., Grassi, M., Guttridge, P., Hakala, P., Henri, G., Hermsen, W., Horak, J., Hornstrup, A., in’t Zand, J. J. M., Isern, J., Kalemci, E., Kanbach, G., Karas, V., Kataria, D., Kennedy, T., Klochkov, D., Kluźniak, W., Kokkotas, K., Kreykenbohm, I., Krolik, J., Kuiper, L., Kuvvetli, I., Kylafis, N., Lattimer, J. M., Lazzarotto, F., Leahy, D., Lebrun, F., Lin, D., Lund, N., Maccarone, T., Malzac, J., Marisaldi, M., Martindale, A., Mastropietro, M., McClintock, J., McHardy, I., Mendez, M., Mereghetti, S., Miller, M. C., Mineo, T., Morelli, E., Morsink, S., Motch, C., Motta, S., Muñoz-Darias, T., Naletto, G., Neustroev, V., Nevalainen, J., Olive, J. F., Orio, M., Orlandini, M., Orleanski, P., Ozel, F., Pacciani, L., Paltani, S., Papadakis, I., Papitto, A., Patruno, A., Pellizzoni, A., Petráček, V., Petri, J., Petrucci, P. O., Phlips, B., Picolli, L., Possenti, A., Psaltis, D., Rambaud, D., Reig, P., Remillard, R., Rodriguez, J., Romano, P., Romanova, M., Schanz, T., Schmid, C., Segreto, A., Shearer, A., Smith, A., Smith, P. J., Soffitta, P., Stergioulas, N., Stolarski, M., Stuchlik, Z., Tiengo, A., Torres, D., Török, G., Turolla, R., Uttley, P., Vaughan, S., Vercellone, S., Waters, R., Watts, A., Wawrzaszek, R., Webb, N., Wilms, J., Zampieri, L., Zezas, A., and Ziolkowski, J.

Published
2012
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14. The AGILE space mission

Author

Tavani, M., Barbiellini, G., Argan, A., Bulgarelli, A., Caraveo, P., Chen, A., Cocco, V., Costa, E., De Paris, G., Del Monte, E., Di Cocco, G., Donnarumma, I., Feroci, M., Fiorini, M., Froysland, T., Fuschino, F., Galli, M., Gianotti, F., Giuliani, A., Evangelista, Y., Labanti, C., Lapshov, I., Lazzarotto, F., Lipari, P., Longo, F., Marisaldi, M., Mastropietro, M., Mauri, F., Mereghetti, S., Morelli, E., Morselli, A., Pacciani, L., Pellizzoni, A., Perotti, F., Picozza, P., Pontoni, C., Porrovecchio, G., Prest, M., Pucella, G., Rapisarda, M., Rossi, E., Rubini, A., Soffitta, P., Trifoglio, M., Trois, A., Vallazza, E., Vercellone, S., Zambra, A., Zanello, D., Giommi, P., Antonelli, A., and Pittori, C.

Published
2008
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18. Extreme particle acceleration in the microquasar Cygnus X-3

Author

Tavani, M., Bulgarelli, A., Piano, G., Sabatini, S., Striani, E., Evangelista, Y., Trois, A., Pooley, G., Trushkin, S., Nizhelskij, N. A., McCollough, M., Koljonen, K. I. I., Pucella, G., Giuliani, A., Chen, A. W., Costa, E., Vittorini, V., Trifoglio, M., Gianotti, F., Argan, A., Barbiellini, G., Caraveo, P., Cattaneo, P. W., Cocco, V., Contessi, T., DʼAmmando, F., Del Monte, E., De Paris, G., Di Cocco, G., Di Persio, G., Donnarumma, I., Feroci, M., Ferrari, A., Fuschino, F., Galli, M., Labanti, C., Lapshov, I., Lazzarotto, F., Lipari, P., Longo, F., Mattaini, E., Marisaldi, M., Mastropietro, M., Mauri, A., Mereghetti, S., Morelli, E., Morselli, A., Pacciani, L., Pellizzoni, A., Perotti, F., Picozza, P., Pilia, M., Prest, M., Rapisarda, M., Rappoldi, A., Rossi, E., Rubini, A., Scalise, E., Soffitta, P., Vallazza, E., Vercellone, S., Zambra, A., Zanello, D., Pittori, C., Verrecchia, F., Giommi, P., Colafrancesco, S., Santolamazza, P., Antonelli, A., and Salotti, L.

Published
2009
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19. A tale of two tails: insights from simulations into the formation of the peculiar dwarf galaxy NGC 1427A.

Author

Mastropietro, M, De Rijcke, S, and Peletier, R F

Subjects
*DWARF galaxies, *GALAXY clusters, *GALACTIC evolution, *KINEMATICS, *PHOTOMETRY, *GALAXIES
Abstract

We present a scenario for the formation and the morphology of the arrow-shaped dwarf irregular galaxy NGC 1427A in the Fornax Cluster. This galaxy shows intriguing stellar and gaseous tails pointing in different directions for which alternative but not conclusive formation scenarios have been proposed in the literature. We performed N -body/SPH simulations of dwarf galaxies falling into a model of the Fornax cluster, exhibiting a jellyfish-like appearance while undergoing ram-pressure stripping. We noted that some of our models show interesting tail morphologies similar to that of NGC 1427A. In this way, the peculiar NGC 1427A structure can be studied using models whose stellar and neutral gas photometry and kinematics are in good agreement with the observed ones, without the need of invoking an interaction with a nearby galaxy. Thanks to the tails, we can identify the requirements for a galaxy to expose such a structure and assess the possible position and velocity of the galaxy in the cluster. This puts constraints on the orbit of the galaxy, its position in the cluster and the time since its pericentre passage. From the statistics of identified snapshots following our modelling, we found that the most likely position of the galaxy is around 200 kpc in front of the cluster centre, travelling towards the cluster with a velocity angle with respect to the line-of-sight direction of around 50 deg. This analysis can be useful in future observations of similar galaxies in clusters to characterize their position and velocity in the cluster and their formation. [ABSTRACT FROM AUTHOR]

Published
2021
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24. Characterization of a tagged gamma-ray beam line at the DA Phi NE Beam Test Facility

Author

Cattaneo, P. W., Argan, A., Boffelli, F., Bulgarelli, A., Buonomo, B., Chen, A. W., D'Ammando, F., Foggetta, L., Froysland, T., Fuschino, F., Galli, M., Gianotti, F., Giuliani, A., Longo, F., Marisaldi, M., Mazzitelli, G., Pellizzoni, A., Prest, Michela, Pucella, G., Quintieri, L., Rappoldi, A., Tavani, M., Trifoglio, M., Trois, A., Valente, P., Vallazza, E., Vercellone, S., Zambra, A., Barbiellini, G., Caraveo, P., Cocco, V., Costa, E., De Paris, G., Del Monte, E., Di Cocco, G., Donnarumma, I., Evangelista, Y., Feroci, M., Ferrari, A., Fiorini, M., Labanti, C., Lapshov, I., Lazzarotto, F., Lipari, P., Mastropietro, M., Mereghetti, S., Morelli, E., Moretti, E., Morselli, A., Pacciani, L., Perotti, F., Piano, G., Picozza, P., Pilia, M., Porrovecchio, G., Rapisarda, M., Rubini, A., Sabatini, S., Soffitta, P., Striani, E., Vittorini, V., Zanello, D., Colafrancesco, S., Giommi, P., Pittori, C., Santolamazza, P., Verrecchia, F., Salotti, L., Cattaneo PW, Argan A, Boffelli F, Bulgarelli A, Buonomo B, Chen AW, DAmmando F, Foggetta L, Froysland T, Fuschino F, Galli M, Gianotti F, Giuliani A, Longo F, Marisaldi M, Mazzitelli G, Pellizzoni A, Prest M, Pucella G, Quintieri L, Rappoldi A, Tavani M, Trifoglio M, Trois A, Valente P, Vallazza E, Vercellone S, Zambra A, Barbiellini G, Caraveo P, Cocco V, Costa E, De Paris G, Del Monte E, Di Cocco G, Donnarumma I, Evangelista Y, Feroci M, Ferrari A, Fiorini M, Labanti C, Lapshov I, Lazzarotto F, Lipari P, Mastropietro M, Mereghetti S, Morelli E, Moretti E, Morselli A, Pacciani L, Perotti F, Piano G, Picozza P, Pilia M, Porrovecchio G, Rapisarda M, Rubini A, Sabatini S, Soffitta P, Striani E, Vittorini V, Zanello D, Colafrancesco S, Giommi P, Pittori C, Santolamazza P, Verrecchia F, and Salotti L

Subjects
photon tagged beam, Gamma Ray Imaging Detector, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, AGILE satellite, Electron and positron beam, Photon beam, silicon tracker, Beam Test Facility, bremsstrahlung, Position-sensitive detector
Abstract

At the core of the AGILE scientific instrument, designed to operate on a satellite, there is the Gamma Ray Imaging Detector (GRID) consisting of a Silicon Tracker (ST), a Cesium Iodide Mini-Calorimeter and an Anti-Coincidence system of plastic scintillator bars. The ST needs an on-ground calibration with a gamma-ray beam to validate the simulation used to calculate the energy response function and the effective area versus the energy and the direction of the gamma rays. A tagged gamma-ray beam line was designed at the Beam Test Facility (BTF) of the INFN Laboratori Nazionali of Frascati (LNF), based on an electron beam generating gamma-rays through bremsstrahlung in a position-sensitive target. The gamma-ray energy is deduced by difference with the post-bremsstrahlung electron energy [1,2]. The electron energy is measured by a spectrometer consisting of a dipole magnet and an array of position sensitive silicon strip detectors, the Photon Tagging System (PTS). The use of the combined BTF-FTS system as tagged photon beam requires understanding the efficiency of gamma-ray tagging, the probability of fake tagging, the energy resolution andthe relation of the PTS hit position versus the gamma-ray energy. This paper describes this study comparing data taken during the AGILE calibration occurred in 2005 with simulation. (C) 2012 Elsevier B.V. All rights reserved.

Published
2012

25. LOFT - A large observatory for x-ray timing

Author

Feroci, M., Stella, L., Vacchi, A., Labanti, C., Rapisarda, M., Primo Attinà, Belloni, T., Campana, R., Campana, S., Costa, E., Del Monte, E., Donnarumma, I., Evangelista, Y., Israel, G. L., Muleri, F., Porta, P., Rashevsky, A., Zampa, G., Zampa, N., Baldazzi, G., Bertuccio, G., Bonvicini, V., Bozzo, E., Burderi, L., Corongiu, A., Covino, S., Dall Osso, S., Martino, D., Di Cosimo, S., Di Persio, G., Di Salvo, T., Fuschino, F., Grassi, M., Lazzarotto, F., Malcovati, P., Marisaldi, M., Mastropietro, M., Mereghetti, S., Morelli, E., Orio, M., Pellizzoni, A., Pacciani, L., Papitto, A., Picolli, L., Possenti, A., Rubini, A., Soffitta, P., Turolla, R., Zampieri, L., Feroci, M., Stella, L., Vacchi, A., Labanti, C., Rapisarda, M., Attinà, P., Belloni, T., Campana, R., Campana, S., Costa, E., Del Monte, E., Donnarumma, I., Evangelista, Y., Israel, G. L., Muleri, F., Porta, P., Rashevsky, A., Zampa, G., Zampa, N., Baldazzi, G., Bertuccio, G., Bonvicini, V., Bozzo, E., Burderi, L., Corongiu, A., Covino, S., Dall'Osso, S., de Martino, D., di Cosimo, S., di Persio, G., di Salvo, T., Fuschino, F., Grassi, M., Lazzarotto, F., Malcovati, P., Marisaldi, M., Mastropietro, M., Mereghetti, S., Morelli, E., Orio, M., Pellizzoni, A., Pacciani, L., Papitto, A., Picolli, L., Possenti, A., Rubini, A., Soffitta, P., Turolla, R., Zampieri, L., M. Feroci, L. Stella, A. Vacchi, C. Labanti, M. Rapisarda, P. Attina, T. Belloni, R. Campana, S. Campana, E. Costa, E. Del Monte, I. Donnarumma, Y. Evangelista, G. L. Israel, F. Muleri, P. Porta, A. Rashevsky, G. Zampa, N. Zampa, G. Baldazzi, G. Bertuccio, V. Bonvicini, E. Bozzo, L. Burderi, A. Corongiu, S. Covino, S. Dall'Osso, D. de Martino, S. Di Cosimo, G. Di Persio, T. Di Salvo, F. Fuschino, M. Grassi, F. Lazzarotto, P. Malcovati, M. Marisaldi, M. Mastropietro, S. Mereghetti, E. Morelli, M. Orio, A. Pellizzoni, L. Pacciani, A. Papitto, L. Picolli, A. Possenti, A. Rubini, P. Soffitta, R. Turolla, and and L. Zampieri

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), sezele, Applied Mathematics, Silicon drift chambers, FOS: Physical sciences, Computer Science Applications1707 Computer Vision and Pattern Recognition, Condensed Matter Physics, Compact sources, High energy astrophysics, Timing, X-rays, Electronic, Optical and Magnetic Materials, Electrical and Electronic Engineering, Settore FIS/05 - Astronomia E Astrofisica, Electronic, Optical and Magnetic Materials, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Instrumentation and Methods for Astrophysics (astro-ph.IM), Observatories, X-rays, Sensors, Silicon, Physics, Polarimetry, Electronics, Imaging spectroscopy
Abstract

The high time resolution observations of the X-ray sky hold the key to a number of diagnostics of fundamental physics, some of which are unaccessible to other types of investigations, such as those based on imaging and spectroscopy. Revealing strong gravitational field effects, measuring the mass and spin of black holes and the equation of state of ultradense matter are among the goals of such observations. At present prospects for future, non-focused X-ray timing experiments following the exciting age of RXTE/PCA are uncertain. Technological limitations are unavoidably faced in the conception and development of experiments with effective area of several square meters, as needed in order to meet the scientific requirements. We are developing large-area monolithic Silicon Drift Detectors offering high time and energy resolution at room temperature, which require modest resources and operation complexity (e.g., read-out) per unit area. Based on the properties of the detector and read-out electronics that we measured in the lab, we developed a realistic concept for a very large effective area mission devoted to X-ray timing in the 2-30 keV energy range. We show that effective areas in the range of 10-15 square meters are within reach, by using a conventional spacecraft platform and launcher of the small-medium class., 13 pages, 8 figures, 1 table, Proceedings of SPIE Vol. 7732, Paper No. 7732-66, 2010

Published
2010

26. MULTIWAVELENGTH OBSERVATIONS OF A TeV-FLARE FROM W COMAE

Author

Veritas, Collaboration, Acciari, V. A., Aliu, E., Aune, T., Beilicke, M., Benbow, W., Bottcher, M., Boltuch, D., Buckley, J. H., Bradbury, S. M., Bugaev, V., Byrum, K., Cannon, A., Cesarini, A., Ciupik, L., Cogan, P., Cui, W., Dickherber, R., Duke, C., Falcone, A., Finley, J. P., Fortin, P., Fortson, L., Furniss, A., Galante, N., Gall, D., Gibbs, K., Gillanders, G. H., Grube, J., Guenette, R., Gyuk, G., Hanna, D., Holder, J., Hui, C. M., Humensky, T. B., 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., Millis, J., Moriarty, P., Ong, R. A., Otte, A. N., Pandel, D., Perkins, J. S., Pichel, A., Pohl, M., Quinn, J., Ragan, K., Reyes, L. C., Reynolds, P. T., Roache, E., Rose, H. J., Sembroski, G. H., Smith, A. W., Steele, D., 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., Agile, The Team, Pian, E., Vercellone, S., Donnarumma, I., D Ammando, F., Bulgarelli, A., Chen, A. W., Giuliani, A., Longo, F., Pacciani, L., Pucella, G., Vittorini, V., Tavani, M., Argan, A., Barbiellini, G., Caraveo, P., Cattaneo, P. W., Cocco, V., Costa, E., Del Monte, E., Paris, G., Di Cocco, G., Evangelista, Y., Feroci, M., 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., Piano, G., Picozza, P., Pilia, M., Porrovecchio, G., Prest, M., Rapisarda, M., Rappoldi, A., Rubini, A., Soffitta, S. Sabatini P., Trifoglio, M., Trois, A., Vallazza, E., Zambra, A., Zanello, D., Pittori, C., Santolamazza, P., Verrecchia, F., Giommi, P., Colafrancesco, S., Salotti, L., Massimo Villata, Raiteri, C. M., Aller, H. D., Aller, M. F., Arkharov, A. A., Efimova, N. V., Larionov, V. M., Leto, P., Ligustri, R., Lindfors, E., Pasanen, M., Kurtanidze, O. M., Tetradze, S. D., Lahteenmaki, A., Kotiranta, M., Cucchiara, A., Romano, P., Nesci, R., Pursimo, T., Heidt, J., Benitez, E., Hiriart, D., Nilsson, K., Berdyugin, A., Mujica, R., Dultzin, D., Lopez, J. M., Mommert, M., Sorcia, M., La Calle Perez, I., V. A., Acciari, E., Aliu, T., Aune, M., Beilicke, W., Benbow, M., Bottcher, D., Boltuch, J. H., Buckley, S. M., Bradbury, V., Bugaev, K., Byrum, A., Cannon, A., Cesarini, L., Ciupik, P., Cogan, W., Cui, R., Dickherber, C., Duke, A., Falcone, J. P., Finley, P., Fortin, L., Fortson, A., Furni, N., Galante, D., Gall, K., Gibb, G. H., Gillander, J., Grube, R., Guenette, G., Gyuk, D., Hanna, J., Holder, C. M., Hui, T. B., Humensky, P., Kaaret, N., Karlsson, M., Kertzman, D., Kieda, A., Konopelko, H., Krawczynski, F., Krennrich, M. J., Lang, S., Lebohec, G., Maier, S., Mcarthur, A., Mccann, M., Mccutcheon, J., Milli, P., Moriarty, R. A., Ong, A. N., Otte, D., Pandel, J. S., Perkin, A., Pichel, M., Pohl, J., Quinn, K., Ragan, L. C., Reye, P. T., Reynold, E., Roache, H. J., Rose, G. H., Sembroski, A. W., Smith, D., Steele, M., Theiling, S., Thibadeau, A., Varlotta, V. V., Vassiliev, S., Vincent, S. P., Wakely, J. E., Ward, T. C., Weeke, A., Weinstein, T., Weisgarber, D. A., William, S., Wissel, M., Wood, E., Pian, S., Vercellone, I., Donnarumma, F., D'Ammando, A., Bulgarelli, A. W., Chen, A., Giuliani, Longo, Francesco, L., Pacciani, G., Pucella, V., Vittorini, M., Tavani, A., Argan, G., Barbiellini, P., Caraveo, P. W., Cattaneo, V., Cocco, E., Costa, E. D., Monte, G. D., Pari, G. D., Cocco, Y., Evangelista, M., Feroci, 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, G., Piano, P., Picozza, M., Pilia, G., Porrovecchio, M., Prest, M., Rapisarda, A., Rappoldi, A., Rubini, S., Sabatini, 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, H. D., Aller, M. F., Aller, A. A., Arkharov, N. V., Efimova, V. M., Larionov, P., Leto, R., Ligustri, E., Lindfor, M., Pasanen, O. M., Kurtanidze, S. D., Tetradze, A., Lahteenmaki, M., Kotiranta, A., Cucchiara, P., Romano, R., Nesci, T., Pursimo, J., Heidt, E., Benitez, D., Hiriart, K., Nilsson, A., Berdyugin, R., Mujica, D., Dultzin, J. M., Lopez, M., Mommert, M., Sorcia, I. D., Perez, Acciari VA, Aliu E, Aune T, Beilicke M, Benbow W, Bottcher M, Boltuch D, Buckley JH, Bradbury SM, Bugaev V, Byrum K, Cannon A, Cesarini A, Ciupik L, Cogan P, Cui W, Dickherber R, Duke C, Falcone A, Finley JP, Fortin P, Fortson L, Furniss A, Galante N, Gall D, Gibbs K, Gillanders GH, Grube J, Guenette R, Gyuk G, Hanna D, Holder J, Hui CM, Humensky TB, 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, Millis J, Moriarty P, Ong RA, Otte AN, Pandel D, Perkins JS, Pichel A, Pohl M, Quinn J, Ragan K, Reyes LC, Reynolds PT, Roache E, Rose HJ, Sembroski GH, Smith AW, Steele D, 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, Pian E, Vercellone S, Donnarumma I, DAmmando F, Bulgarelli A, Chen AW, Giuliani A, Longo F, Pacciani L, Pucella G, Vittorini V, Tavani M, Argan A, Barbiellini G, Caraveo P, Cattaneo PW, Cocco V, Costa E, Del Monte E, De Paris G, Di Cocco G, Evangelista Y, Feroci M, 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, Piano G, Picozza P, Pilia M, Porrovecchio G, Prest M, Rapisarda M, Rappoldi A, Rubini A, Sabatini S, 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 CM, Aller HD, Aller MF, Arkharov AA, Efimova NV, Larionov VM, Leto P, Ligustri R, Lindfors E, Pasanen M, Kurtanidze OM, Tetradze SD, Lahteenmaki A, Kotiranta M, Cucchiara A, Romano P, Nesci R, Pursimo T, Heidt J, Benitez E, Hiriart D, Nilsson K, Berdyugin A, Mujica R, Dultzin D, Lopez JM, Mommert M, Sorcia M, and Perez ID

Subjects
Agile, High energy, agile space mission, Astrophysics::High Energy Astrophysical Phenomena, bl-lacertae objects, FOS: Physical sciences, Flux, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, telescope, 01 natural sciences, High Energy Gamma-ray Astronomy, blazar, law.invention, multiwavelength, BL Lacertae, law, 0103 physical sciences, 010303 astronomy & astrophysics, High Energy Astrophysical Phenomena (astro-ph.HE), Physics, 010308 nuclear & particles physics, Very High Energy Gamma-ray Astronomy, AGILE satellite, Active Galactic Nuclei, Gamma ray, background-radiation, Astronomy and Astrophysics, gamma-ray emission, lac objects, spectral energy-distributions, veritas observations, Space and Planetary Science, source list, Spectral energy distribution, BL Lacertae objects: individual (W Com), Astrophysics - High Energy Astrophysical Phenomena, gamma rays: observations, Flare, BL Lac object
Abstract

We report results from an intensive multiwavelength campaign on the intermediate-frequency-peaked BL Lacertae object W Com (z=0.102) during a strong outburst of very high energy gamma-ray emission in June 2008. The very high energy gamma-ray signal was detected by VERITAS on 2008 June 7-8 with a flux F(>200 GeV) = (5.7+-0.6)x10^-11 cm-2s-1, about three times brighter than during the discovery of gamma-ray emission from W Com by VERITAS in 2008 March. The initial detection of this flare by VERITAS at energies above 200 GeV was followed by observations in high energy gamma-rays (AGILE, E>100 MeV), and X-rays (Swift and XMM-Newton), and at UV, and ground-based optical and radio monitoring through the GASP-WEBT consortium and other observatories. Here we describe the multiwavelength data and derive the spectral energy distribution (SED) of the source from contemporaneous data taken throughout the flare., 26 pages, 5 figures; Accepted for publication by The Astrophysical Journal

Published
2009

27. Characterization of a tagged $\gamma$-ray beam line at the DAFNE Beam Test Facility

Author

Cattaneo, P W, Argan, A, Boffelli, F, Bulgarelli, A, Buonomo, B, Chen, A W, D’Ammando, F, FoggettA, L, Froysland, T, Fuschino, F, Galli, M, Gianotti, F, Giuliani, A, Longo, F, Marisaldi, M, Mazzitelli, G, Pellizzoni, A, Prest, M, Pucella, G, Quintieri, L, Rappoldi, A, Tavani, M, Trifoglio, M, Trois, A, Valente, P, Vallazza, E, Vercellone, S, Zambra, A, Barbiellini, G, Caraveo, P, Cocco, V, Costa, E, De Paris, G, Del Monte, E, Di Cocco, G, Donnarumma, I, Evangelista, Y, Feroci, M, Ferrari, A, Fiorini, M, Labanti, C, Lapshov, I, Lazzarotto, F, Lipari, P, Mastropietro, M, Mereghetti, S, Morelli, E, Moretti, E, Morselli, A, Pacciani, L, Perotti, F, Piano, G, Picozza, P, Pilia, M, Porrovecchio, G, Rapisarda, M, Rubini, A, Sabatini, S, Soffitta, P, Striani, E, Vittorini, V, Zanello, D, Colafrancesco, S, Giommi, P, Pittori, C, Santolamazza, P, Verrecchia, F, and Salotti, L

Subjects
Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Test beams infrastructure at CERN and Frascati [8.2], Improvement and equipment of irradiation and test beam lines [8], Detectors and Experimental Techniques
Abstract

At the core of the AGILE scientific instrument, designed to operate on a satellite, there is the Gamma Ray Imaging Detector (GRID) consisting of a Silicon Tracker (ST), a Cesium Iodide Mini-Calorimeter and an Anti-Coincidence system of plastic scintillator bars. The ST needs an on-ground calibration with a γ-ray beam to validate the simulation used to calculate the energy response function and the effective area versus the energy and the direction of the γ rays. A tagged γ-ray beam line was designed at the Beam Test Facility (BTF) of the INFN Laboratori Nazionali of Frascati (LNF), based on an electron beam generating γ-rays through bremsstrahlung in a position-sensitive target. The γ-ray energy is deduced by difference with the post-bremsstrahlung electron energy [1] and [2]. The electron energy is measured by a spectrometer consisting of a dipole magnet and an array of position sensitive silicon strip detectors, the Photon Tagging System (PTS). The use of the combined BTF-PTS system as tagged photon beam requires understanding the efficiency of γ-ray tagging, the probability of fake tagging, the energy resolution and the relation of the PTS hit position versus the γ-ray energy. This paper describes this study comparing data taken during the AGILE calibration occurred in 2005 with simulation.

Published
2012

29. Characterization of a tagged $\gamma$-ray beam line at the DA$\Phi$NE Beam Test Facility

Author

Cattaneo, P. W., Argan, A., Boffelli, F., Bulgarelli, A., Buonomo, B., Chen, A. W., D'Ammando, F., Froysland, T., Fuschino, F., Galli, M., Gianotti, F., Giuliani, A., Longo, F., Marisaldi, M., Mazzitelli, G., Pellizzoni, A., Prest, M., Pucella, G., Quintieri, L., Rappoldi, A., Tavani, M., Trifoglio, M., Trois, A., Valente, P., Vallazza, E., Vercellone, S., Zambra, A., Barbiellini, G., Caraveo, P., Cocco, V., Costa, E., De Paris, G., Del Monte, E., Di Cocco, G., Donnarumma, I., Evangelista, Y., Feroci, M., Ferrari, A., Fiorini, M., Labanti, C., Lapshov, I., Lazzarotto, F., Lipari, P., Mastropietro, M., Mereghetti, S., Morelli, E., Moretti, E., Morselli, A., Pacciani, L., Perotti, F., Piano, G., Picozza, P., Pilia, M., Porrovecchio, G., Rapisarda, M., Rubini, A., Sabatini, S., Soffitta, P., Striani, E., Vittorini, V., Zanello, D., Colafrancesco, S., Giommi, P., Pittori, C., Santolamazza, P., Verrecchia, F., and Salotti, L.

Subjects
Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

At the core of the AGILE scientific instrument, designed to operate on a satellite, there is the Gamma Ray Imaging Detector (GRID) consisting of a Silicon Tracker (ST), a Cesium Iodide Mini-Calorimeter and an Anti-Coincidence system of plastic scintillator bars. The ST needs an on-ground calibration with a $\gamma$-ray beam to validate the simulation used to calculate the energy response function and the effective area versus the energy and the direction of the $\gamma$ rays. A tagged $\gamma$-ray beam line was designed at the Beam Test Facility (BTF) of the INFN Laboratori Nazionali of Frascati (LNF), based on an electron beam generating $\gamma$ rays through bremsstrahlung in a position-sensitive target. The $\gamma$-ray energy is deduced by difference with the post-bremsstrahlung electron energy \cite{prest}-\cite{hasan}. The electron energy is measured by a spectrometer consisting of a dipole magnet and an array of position sensitive silicon strip detectors, the Photon Tagging System (PTS). The use of the combined BTF-PTS system as tagged photon beam requires understanding the efficiency of $\gamma$-ray tagging, the probability of fake tagging, the energy resolution and the relation of the PTS hit position versus the $\gamma$-ray energy. This paper describes this study comparing data taken during the AGILE calibration occurred in 2005 with simulation., Comment: 23 pages; 17 figures. Second and final version accepted by Nucl. Instr. & Meth. A

Published
2011

30. Concept for an Innovative wide-filed camara for X-ray astronomy

Author

Campana, R., Feroci, M., Vacchi, A., Labanti, C., Zampa, G., Del Monte, E., Evangelista, Y., Muleri, F., Pacciani, L., Rubini, A., Soffitta, P., Costa, E., Donnarumma, I., Lazzarotto, F., Mastropietro, M., Morelli, E., Rapisarda, M., Fuschino, F., Marisaldi, M., Bonvicini, V., Rashevsky, A., Zampa, N., Perotti, F., Amati, L., Frontera, Filippo, Antonelli, L. A., Fiore, F., Israel, G. L., Nicastro, F., Orlandini, M., Baldazzi, G., Picolli, L., Grassi, M., and Malcovati, P.

Published
2010

31. New developments in surface (e,2e) experiments RID G-7348-2011

Author

Iacobucci S, Rioual S, Ruocco A, Mastropietro M, STEFANI, Giovanni, Iacobucci, S, Rioual, S, Ruocco, A, Mastropietro, M, and Stefani, Giovanni

Abstract

This work presents the implementation of a position-sensitive detector in the Montelibretti surface (e,2e) apparatus that allows to fully define the direction of the ejected electron from the surface, and hence to improve the momentum resolution. The coincidence electronic chain and the acquisition software have been upgraded in order to achieve high data collection speed, storage of large dimension data files and fast visualisation of the results. Preliminary angle resolved (e,2e) data relative to the ionisation of the pi band of highly oriented pyrolitic graphite show that a momentum resolution better than 0.2 Angstrom(-1) has been achieved without degrading the overall speed of acquisition.

Published
1999

32. Discovery of extreme particle acceleration in the microquasar Cygnus X-3

Author

Tavani, M., Bulgarelli, A., Piano, G., Sabatini, S., Striani, E., Evangelista, Y., Trois, A., Pooley, G., Trushkin, S., Nizhelskij, N. A., McCollough, M., Koljonen, K. I. I., Pucella, G., Giuliani, A., Chen, A. W., Costa, E., Vittorini, V., Trifoglio, M., Gianotti, F., Argan, A., Barbiellini, G., Caraveo, P., Cattaneo, P. W., Cocco, V., Contessi, T., D'Ammando, F., Del Monte, E., De Paris, G., Di Cocco, G., Di Persio, G., Donnarumma, I., Feroci, M., Ferrari, A., Fuschino, F., Galli, M., Labanti, C., Lapshov, I., Lazzarotto, F., Lipari, P., Longo, F., Mattaini, E., Marisaldi, M., Mastropietro, M., Mauri, A., Mereghetti, S., Morelli, E., Morselli, A., Pacciani, L., Pellizzoni, A., Perotti, F., Picozza, P., Pilia, M., Prest, M., Rapisarda, M., Rappoldi, A., Rossi, E., Rubini, A., Scalise, E., Soffitta, P., Vallazza, E., Vercellone, S., Zambra, A., Zanello, D., Pittori, C., Verrecchia, F., Giommi, P., Colafrancesco, S., Santolamazza, P., Antonelli, A., and Salotti, L.

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astrophysics - High Energy Astrophysical Phenomena, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The study of relativistic particle acceleration is a major topic of high-energy astrophysics. It is well known that massive black holes in active galaxies can release a substantial fraction of their accretion power into energetic particles, producing gamma-rays and relativistic jets. Galactic microquasars (hosting a compact star of 1-10 solar masses which accretes matter from a binary companion) also produce relativistic jets. However, no direct evidence of particle acceleration above GeV energies has ever been obtained in microquasar ejections, leaving open the issue of the occurrence and timing of extreme matter energization during jet formation. Here we report the detection of transient gamma-ray emission above 100 MeV from the microquasar Cygnus X-3, an exceptional X-ray binary which sporadically produces powerful radio jets. Four gamma-ray flares (each lasting 1-2 days) were detected by the AGILE satellite simultaneously with special spectral states of Cygnus X-3 during the period mid-2007/mid-2009. Our observations show that very efficient particle acceleration and gamma-ray propagation out of the inner disk of a microquasar usually occur a few days before major relativistic jet ejections. Flaring particle energies can be thousands of times larger than previously detected maximum values (with Lorentz factors of 105 and 102 for electrons and protons, respectively). We show that the transitional nature of gamma-ray flares and particle acceleration above GeV energies in Cygnus X-3 is clearly linked to special radio/X-ray states preceding strong radio flares. Thus gamma-rays provide unique insight into the nature of physical processes in microquasars., 29 pages (including Supplementary Information), 8 figures, 2 tables version submitted to Nature on August 7, 2009 (accepted version available at http://www.nature.com/nature/journal/vaop/ncurrent/pdf/nature08578.pdf)

Published
2009

33. SuperAGILE: one year after launch.

Author

Feroci, M., Costa, E., Del Monte, E., Di Persio, G., Donnarumma, I., Evangelista, Y., Frutti, M., Lapshov, I., Lazzarotto, F., Morelli, E., Mastropietro, M., Pacciani, L., Rapisarda, M., Rubini, A., Soffitta, P., Argan, A., Trois, A., and Tavani, M.

Published
2008
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35. SuperAGILE ground calibrations and first in orbit observations.

Author

Pacciani, L., Costa, E., Del Monte, E., Di Persio, G., Donnarumma, I., Evangelista, Y., Feroci, M., Lazzarotto, F., Lapshov, I., Mastropietro, M., Morelli, E., Rapisarda, M., Rubini, A., Soffitta, P., Argan, A., Bulgarelli, A., Gianotti, F., Lo Bue, A., Morbidini, A., and Rossi, P.

Published
2007
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36. SuperAGILE at launch.

Author

Soffitta, P., Costa, E., Del Monte, E., Di Persio, G., Donnarumma, I., Evangelista, Y., Feroci, M., Frutti, M., Lapshov, I., Lazzarotto, F., Mastropietro, M., Morelli, E., Pacciani, L., Porrovecchio, G., Rapisarda, M., Rubini, A., Sabatino, G., Uberti, Olga, Argan, A., and Tavani, M.

Published
2006
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37. ASPEX: a pret-a-porter all sky monitor.

Author

Feroci, M., Costa, E., Del Monte, E., Donnarumma, I., Evangelista, Y., Labanti, C., Lapshov, I., Lazzarotto, F., Marisaldi, M., Mastropietro, M., Morelli, E., Pacciani, L., Rapisarda, M., Rubini, A., and Soffitta, P.

Published
2006
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38. The on-ground calibrations of SuperAGILE: I. X-ray pencil beam.

Author

Evangelista, Y., Costa, E., Del Monte, E., Di Persio, G., Donnarumma, I., Feroci, M., Frutti, M., Generosi, A., Lapshov, I., Lazzarotto, F., Mastropietro, M., Morelli, E., Pacciani, L., Porrovecchio, G., Rapisarda, M., Rossi-Albertini, V., Rubini, A., Sabatino, G., and Soffitta, P.

Published
2006
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40. SuperAGILE: The Hard X-ray Imager of AGILE.

Author

Feroci, M., Costa, E., Barbanera, L., Del Monte, E., Di Persio, G., Frutti, M., Lapshov, I., Lazzarotto, F., Mastropietro, M., Morelli, E., Pacciani, L., Porrovecchio, G., Preger, B., Rapisarda, M., Rubini, A., Soffitta, P., Tavani, M., Argan, A., Ghirlanda, G., and Mereghetti, S.

Subjects
GAMMA rays, GAMMA ray bursts, GAMMA ray astronomy, DETECTORS, PHYSICS instruments, IMAGING systems
Abstract

SuperAGILE is the hard X-ray (10–40 keV) imager for the gamma-ray mission AGILE, currently scheduled for launch in mid-2005. It is based on 4 Si-microstrip detectors, with a total geometric area of 1444 cm2 (max effective about 300 cm2), equipped with one-dimensional coded masks. The 4 detectors are perpendicularly oriented, in order to provide pairs of orthogonal one-dimensional images of the X-ray sky. The field of view of each 1-D detector is 107 °×68°, at zero response, with an overlap in the central 68°×68° area. The angular resolution on axis is 6 arcmin (pixel size). We present here the current status of the hardware development and the scientific potential for GRBs, for which an onboard trigger and imaging system will allow distributing locations through a fast communication telemetry link from AGILE to the ground. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2004
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41. Super-agile—The X-ray detector for the gamma-ray mission agile.

Author

Costa, E., Barbanera, L., Feroci, M., Frutti, M., Lapshov, I., Martino, B., Mastropietro, M., Morelli, E., Rapisarda, M., Rubini, A., Soffitta, P., Tavani, M., Mereghetti, S., Vercellone, S., Caraveo, P., Perotti, F., Barbiellini, G., Budini, G., Longo, F., and Prest, M.

Subjects
GAMMA ray bursts, SPECTRUM analysis
Abstract

The gamma-ray observatory AGILE, the first ASI Small Mission, is planned to operate in 2002-2005. We present here Super-AGILE, an X-ray detector added on top of the gamma-ray tracker. Super-AGILE will have a large field of view, providing hard X-ray imaging and moderate spectroscopy together with the gamma-ray detector. Super-AGILE is composed by Si-microstrip detectors, equipped with a low-noise electronics allowing a sensitive range of 10-40 keV, and coupled with a set of mutually orthogonal one-dimensional coded masks. A bidimensional source location capability is obtained by dividing the total 1444 cm² geometric area of the detectors in two orthogonal directions. [ABSTRACT FROM AUTHOR]

Published
2001

42. An apparatus to investigate the fragmentation of molecular dications by electron impact.

Author

Alberti, G., Fainelli, E., Maracci, F., Mastropietro, M., Platania, R., and Avaldi, L.

Subjects
PARTICLES (Nuclear physics), SPECTROMETERS, SPECTRUM analysis instruments, CATHODE rays, MASS spectrometers, ALPHA ray spectrometry
Abstract

An experimental setup to study the fragmentation of molecular dications formed via inner shell ionization by electron impact is described. The main components of the setup are a cylindrical mirror analyzer, CMA, used to detect the Auger electrons, which mark the molecular site where the ionization occurred and select the state of the dication, and a time of flight mass spectrometer, TOF-MS, used to detect the parent doubly charged ion or its fragments. The fragmentation is studied via Auger electron-ion and Auger electron-ion-ion coincidence experiments. The results of the measurements used to characterize the spectrometer are presented and discussed. Then the potentialities of the setup are described via selected examples of its applications. [ABSTRACT FROM AUTHOR]

Published
2005
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44. A Light and Effective Wide Field Monitor for Gamma Ray Bursts and Transient Sources.

Author

Feroci, M., Amati, L., Antonelli, L. A., Bonvicini, V., Campana, R., Costa, E., Del Monte, E., Donnarumma, I., Evangelista, Y., Fiore, F., Fuschino, F., Israel, G. L., Labanti, C., Lapshov, I., Lazzarotto, F., Marisaldi, M., Mastropietro, M., Morelli, E., Muleri, F., and Nicastro, F.

Subjects
X-ray astronomy, SILICON diodes, GAMMA ray bursts, ULTRAVIOLET detectors, ELECTROMAGNETIC measurements
Abstract

We present here a concept for a light and low-power wide field monitor working in the X-ray range, suitable for simultaneous imaging of large portions of the sky and GRB localizations. Our concept evolves from and improves on the design of the 5-kg SuperAGILE experiment, flying on the AGILE mission and currently delivering arcmin-localizations of GRBs at a rate of about 1/month. Similar to SuperAGILE, our concept is based on position sensitive silicon detectors equipped with one-dimensional coded masks. Different options are available for the detector, whose properties, combined with the scientific requirements, drive the design of the experiment. Our approach is based on a modular detector. The experiment design can then be tailored to specific scientific goals of the experiment or the mission (e.g., to cite GRBs only: the brightest GRBs/XRFs on a large field of view—FoV, or many low-fluence GRBs/XRFs on a smaller FoV, or the low energy spectrum of the prompt event, or the detection of high-z GRBs). In this paper we describe the concept, the main detector properties and outline some possible experiment configurations, with examples of their expected performance. Different experiment configurations in terms of area, FoV, angular resolution may be designed starting from the same detectors. Instead, the band-pass is mostly related to the detector properties. A key point of our project is the high degree of readiness of the detectors that are at production level and may be immediately proposed for a future experiment onboard missions with high readiness requirements. [ABSTRACT FROM AUTHOR]

Published
2009
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47. ASTRI SST-2M prototype and mini-array simulation chain, data reduction software, and archive in the framework of the Cherenkov Telescope Array

Author

Lombardi, S., Bigongiari, C., Gallozzi, S., Antonelli, L. A., Bastieri, D., Donnarumma, I., Lucarelli, F., Mastropietro, M., Munar, P., Perri, M., Stamerra, A., Visconti, F., Maccarone, M. C., and Consortium, CTA

Subjects
7. Clean energy
Abstract

35th International Cosmic Ray Conference, ICRC2017, Bexco, South Korea, 10 Jul 2017 - 20 Jul 2017; 8 p. (2017)., The Cherenkov Telescope Array (CTA) is a worldwide project aimed at building the next-generation ground-based gamma-ray observatory. Within the CTA project, the Italian National Institute for Astrophysics (INAF) is developing an end-to-end prototype of the CTA Small-Size Telescopes with a dual-mirror (SST-2M) Schwarzschild-Couder configuration. The prototype, named ASTRI SST-2M, is located at the INAF 'M.C. Fracastoro' observing station in Serra La Nave (Mt. Etna, Sicily) and is currently in the scientific and performance validation phase. A mini-array of (at least) nine ASTRI telescopes has been then proposed to be deployed at the Southern CTA site, by means of a collaborative effort carried out by institutes from Italy, Brazil, and South-Africa. The CTA/ASTRI team is developing an end-to-end software package for the reduction of the raw data acquired with both ASTRI SST-2M prototype and mini-array, with the aim of actively contributing to the global ongoing activities for the official data handling system of the CTA observatory. The group is also undertaking a massive Monte Carlo simulation data production using the detector Monte Carlo software adopted by the CTA consortium. Simulated data are being used to validate the simulation chain and evaluate the ASTRI SST-2M prototype and mini-array performance. Both activities are also carried out in the framework of the European H2020-ASTERICS (Astronomy ESFRI and Research Infrastructure Cluster) project. A data archiving system, for both ASTRI SST-2M prototype and mini-array, has been also developed by the CTA/ASTRI team, as a testbed for the scientific archive of CTA. In this contribution, we present the main components of the ASTRI data handling systems and report the status of their development.

49. A concept for a lightweight, low-power and sensitive Silicon-based All Sky Monitor for transient sources and Gamma Ray Bursts.

Author

Campana, R., Pacciani, L., Feroci, M., Costa, E., Del Monte, E., Donnarumma, I., Evangelista, Y., Lazzarotto, F., Mastropietro, M., Muleri, F., Rubini, A., Rapisarda, M., Amati, L., Fuschino, F., Labanti, C., Marisaldi, M., Orlandini, M., Perotti, F., Bonvicini, V., and Rashevsky, A.

Subjects
GAMMA ray bursts, IONIZING radiation, GAMMA ray astronomy, ELECTROMAGNETIC waves, DETECTORS
Abstract

We present a concept for a coded-mask All Sky Monitor based on Silicon Drift Detectors. The current design has a high level of readiness, minimizes the total weight (<10 kg for each 1-D module with a sensitive area of ∼500 cm2) and power consumption (<10 W per module). In this configuration it is sensitive in the range 3–60 keV, has a fully coded field of view of >2 steradians and an on-axis sensitivity of ∼3 mCrab (5σ, 50 ks). The intrinsic modularity of the detector allows to envisage experiments with different configurations, in terms of field of view, angular resolution or effective area. We show the expected scientific performances of such an experiment, with emphasis on the observations of X-ray Galactic transients and gamma-ray bursts. [ABSTRACT FROM AUTHOR]

Published
2010
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