Characteristics of the flares of gamma rays detected from the Crab Nebula by the AGILE and
Fermi-LAT satellite instruments are compared with those of a gamma ray burst recorded by
several air shower arrays on February 23, 1989. It is demonstrated that though pulsar-periodicity
and energy spectra of emissions at 100 MeV (satellite gamma ray telescopes) and 100 TeV (EAS
arrays) are different, their time structures seem to be similar. Moreover, may be the difference
between “flares” and “waves” recently found in the Crab Nebula emission by the AGILE team
also exists at ultra-high energies.
Volume 301 -
35th International Cosmic Ray Conference (ICRC2017) -
Session Gamma-Ray Astronomy. GA-galactic
Similarity and Difference in Time Structures of Gamma-Ray Flares in the Crab Nebula at Drastically Differing Energies
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Pre-published on:
August 16, 2017
Published on:
August 03, 2018
Abstract
DOI: https://doi.org/10.22323/1.301.0726
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.