Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...415l..13t&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 415, no. 1, p. L13-L16.
Astronomy and Astrophysics
Astronomy
68
Active Galactic Nuclei, Energetic Particles, Energy Spectra, Gamma Ray Telescopes, Quasars, Compton Effect, Gamma Ray Astronomy
Scientific paper
The Energetic Gamma Ray Experiment Telescope (EGRET) on the Compton Gamma Ray Observatory observed high-energy gamma rays (50 - 2000 MeV) from quasar 0836 + 710 (z = 2.16) during observations in 1992 January, near the time of an optical fare (von Linde et al., 1993). The gamma-ray spectrum can be fitted with a power law with photon number index 2.4 +/- 0.2. EGRET identifies quasars 0454 - 234, 0804 + 499, 0906 + 430, 1510 - 089, and 2356 + 196 at a statistical significance of between 4 and 5 standard deviations.
Bertsch David L.
Dingus Brenda Lynn
Fichtel Carl E.
Hartman Robert C.
Hunter Stan D.
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