Enhanced gamma-ray emission from the Crab Nebula detected by AGILE

ATel #9586; A. Bulgarelli (INAF/IASF-Bo), G. Piano, P. Munar-Adrover (INAF/IAPS), F. Verrecchia (ASDC), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), C. Pittori, F. Lucarelli (ASDC and INAF/OAR), V. Fioretti, A. Zoli (INAF/IASF-Bo), G. Minervini (CIFS and INAF/IAPS), I. Donnarumma (INAF/IAPS), S. Vercellone (INAF/OAB), E. Striani (CIFS and INAF/IAPS), M. Cardillo (INAF/OA-Arcetri and INAF/IAPS), F. Gianotti, M. Trifoglio (INAF/IASF-Bo), A. Giuliani, S. Mereghetti, P. Caraveo, F. Perotti (INAF/IASF-Mi), A. Chen (Wits University), A. Argan, E. Costa, E. Del Monte, Y. Evangelista, M. Feroci, F. Lazzarotto, I. Lapshov, L. Pacciani, P. Soffitta, S. Sabatini, V. Vittorini (INAF/IAPS), G. Pucella, M. Rapisarda (ENEA-Frascati), G. Di Cocco, F. Fuschino, M. Galli, C. Labanti, M. Marisaldi (INAF/IASF-Bo), A. Pellizzoni, M. Pilia, A. Trois (INAF/OA-Cagliari), G. Barbiellini, E. Vallazza (INFN Trieste), F. Longo (Univ. Trieste and INFN Trieste), A. Morselli, P. Picozza (INFN and Univ. Roma Tor Vergata), M. Prest (Univ. dell'Insubria), P. Lipari, D. Zanello (INFN and Univ. Roma Sapienza), P. W. Cattaneo, A. Rappoldi (INFN Pavia), S. Colafrancesco (INAF/OAR and Wits University), N. Parmiggiani (University of Modena and Reggio Emilia), A. Ferrari (Univ. Torino and CIFS), A. Antonelli (ASDC and INAF/OAR), P. Giommi (ASDC), L. Salotti, G. Valentini, and F. D'Amico (ASI)
on 3 Oct 2016; 13:36 UT
Credential Certification: Andrea Bulgarelli (bulgarelli@iasfbo.inaf.it)

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Integrating from 2016-10-01 05:00 UT to 2016-10-03 05:00 UT, AGILE/GRID detects enhanced gamma-ray emission from a source positionally consistent with the Crab Nebula.

The total (pulsar + Nebula) gamma-ray flux is: F = (590 +/- 130) x 10^-8 ph cm^-2 s^-1 (E > 100 MeV) at 7.5 sigma statistical significance.

This measurement was obtained with AGILE observing a large portion of the sky in spinning mode.

Multifrequency observations of the Crab are strongly encouraged.