Escande, L. and Lott, B. and Dermer, C. D. and Tanaka, Y. (2011) Fermi observations of gamma-ray outbursts from 3C 454.3 in December 2009 and April 2010. Il nuovo cimento C, 34 (3). pp. 237-240. ISSN 1826-9885
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Abstract
The flat-spectrum-radio-quasar 3C 454.3 underwent an extraordinary outburst in December 2009 when it became the brightest gamma-ray source in the sky for over one week. Its daily flux measured with the Fermi Large Area Telescope at photon energies E > 100MeV reached 22 ± 1 × 10−6 ph cm−2 s−1. It again became the brightest source in the sky in April 2010, triggering a pointedmode observation by Fermi. The γ-ray temporal and spectral properties during these exceptional events are presented and discussed.
| Item Type: | Article |
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| Uncontrolled Keywords: | Active and peculiar galaxies and related systems (including BL Lacertae objects, blazars, Seyfert galaxies, Markarian galaxies, and active galactic nuclei) ; Quasars; active or peculiar galaxies, objects, and systems ; γ-ray |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 06 Apr 2020 18:44 |
| Last Modified: | 06 Apr 2020 18:44 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/17276 |
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