AGILE observation of terrestrial gamma-ray flashes

Marisaldi, M. and Argan, A. and Trois, A. and Giuliani, A. and Tavani, M. and Labanti, C. and Fuschino, F. and Bulgarelli, A. and Longo, F. and Barbiellini, G. and Del Monte, E. and Moretti, E. and Trifoglio, M. and Costa, E. and Caraveo, P. and Cattaneo, P. W. and Chen, A. and D'Ammando, F. and De Paris, G. and Di Cocco, G. and Di Persio, G. and Donnarumma, I. and Evangelista, Y. and Feroci, M. and Ferrari, A. and Fiorini, M. and Froysland, T. and Galli, M. and Gianotti, F. and Lapshov, I. and Lazzarotto, F. and Lipari, P. and Mereghetti, S. and Morselli, A. and Pacciani, L. and Pellizzoni, A. and Perotti, F. and Picozza, P. and Piano, G. and Pilia, M. and Prest, M. and Pucella, G. and Rapisarda, M. and Rappoldi, A. and Rubini, A. and Sabatini, S. and Soffitta, P. and Striani, E. and Vallazza, E. and Vercellone, S. and Vittorini, V. and Zambra, A. and Zanello, D. and Antonelli, L. A. and Colafrancesco, S. and Cutini, S. and Giommi, P. and Lucarelli, F. and Pittori, C. and Santolamazza, P. and Verrecchia, F. and Salotti, L. (2011) AGILE observation of terrestrial gamma-ray flashes. Il nuovo cimento C, 34 (3). pp. 279-284. ISSN 1826-9885

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Terrestrial Gamma-ray Flashes (TGFs) are very short (up to a few milliseconds) energetic bursts of photons and electrons originating from severe thunderstorms mainly in the equatorial and tropical regions. Although several production models have been proposed so far, TGFs still remain a mystery since there is not wide consensus yet on their acceleration mechanism, production sites, maximal energy and fluence. AGILE, operating since mid 2007, is detecting hundreds of TGFs with the Mini-Calorimeter (MCAL) instrument. Thanks to the MCAL energy range extended up to 100MeV and its flexible trigger logic on sub-millisecond time scales, AGILE is adding a wealth of observations which pose severe constrains on production models. In this paper we will describe the main characteristics of the AGILE TGF sample, focusing on the recent results concerning the first localization of TGFs at gamma-ray energies by means of the AGILE silicon tracker.

Item Type: Article
Uncontrolled Keywords: Tracking and position-sensitive detectors ; Instruments and techniques for geophysical research: Exploration geophysics ; X- and γ-ray telescopes and instrumentation
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 06 Apr 2020 18:51
Last Modified: 06 Apr 2020 18:51

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