EGRET Observations of Active Galactic Nuclei: 0836+710, 0454-234, 0804+499, 0906+430, 1510-089, and 2356+196
Abstract
The Energetic Gamma Ray Experiment Telescope (EGRET) on the Compton Gamma Ray Observatory observed high-energy gamma rays (50 MeV <= E <= 2000 MeV) from quasar 0836+710 (z = 2.16) during observations in 1992 January, near the time of an optical flare (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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1993
- DOI:
- 10.1086/187021
- Bibcode:
- 1993ApJ...415L..13T
- Keywords:
-
- Active Galactic Nuclei;
- Energetic Particles;
- Energy Spectra;
- Gamma Ray Telescopes;
- Quasars;
- Compton Effect;
- Gamma Ray Astronomy;
- Astrophysics;
- GAMMA RAYS: OBSERVATIONS;
- GALAXIES: QUASARS: GENERAL