Gamma ray astrophysics: the EGRET results
arXiv:0811.0738 · doi:10.1088/0034-4885/71/11/116901
Abstract
Cosmic gamma rays provide insight into some of the most dynamic processes in the Universe. At the dawn of a new generation of gamma-ray telescopes, this review summarizes results from the Energetic Gamma Ray Experiment Telescope (EGRET) on the Compton Gamma Ray Observatory, the principal predecessor mission studying high-energy photons in the 100 MeV energy range. EGRET viewed a gamma-ray sky dominated by prominent emission from the Milky Way, but featuring an array of other sources, including quasars, pulsars, gamma-ray bursts, and many sources that remain unidentified. A central feature of the EGRET results was the high degree of variability seen in many gamma-ray sources, indicative of the powerful forces at work in objects visible to gamma-ray telescopes.
23 pages, 24 figures
References in corpus (7)
- Sub-milliarcsecond Imaging of Quasars and Active Galactic Nuclei III. Kinematics of Parsec-Scale Radio Jets
- A revised catalogue of EGRET gamma-ray sources
- Gamma-ray emission from the solar halo and disk: a study with EGRET data
- The Likely Cause of the EGRET GeV Anomaly and its Implications
- Does the Blazar Gamma-Ray Spectrum Harden with Increasing Flux? Analysis of 9 Years of EGRET Data
- The Geminga Fraction
- The Extragalactic Gamma Ray Background