On the origin of the diffuse gamma-ray background radiation
arXiv:astro-ph/0607479 · doi:10.1016/j.nuclphysbps.2006.11.021
Abstract
We show that inverse Compton scattering of cosmic-microwave-background and starlight photons by cosmic-ray electrons in the interstellar and intergalactic space explains well the spectrum and intensity of the diffuse gamma-ray background radiation (GBR), which was measured by EGRET aboard the Compton Gamma Ray Observatory (CGRO) in directions away from the Galactic disk and centre. The Gamma Ray Large Area Space Telescope (GLAST) will be able to separate the Galactic foreground from the extragalactic gamma-rays, and to provide stringent tests of the theory.
References in corpus (21)
- The Cosmic Microwave Background Spectrum from the Full COBE/FIRAS Data Set
- Propagation of cosmic-ray nucleons in the Galaxy
- Observational constraints on growth of massive black holes
- EGRET Observations of the Extragalactic Gamma Ray Emission
- Diffuse Galactic continuum gamma rays. A model compatible with EGRET data and cosmic-ray measurements
- Spitzer view on the evolution of star-forming galaxies from z=0 to z~3
- Measurements of Primary and Atmospheric Cosmic-Ray Spectra with the BESS-TeV Spectrometer
- A Matter-Antimatter Universe?
- Gamma-Ray Background from Structure Formation in the Intergalactic Medium
- Absorption of High Energy Gamma Rays by Interactions With Starlight Photons in Extragalactic Space at High Redshifts and the High Energy Gamma-Ray Background
- Models for Galactic cosmic-ray propagation
- Anisotropic inverse Compton scattering in the Galaxy
- Towards a complete theory of Gamma Ray Bursts
- Study of Small-Scale Anisotropy of Ultrahigh Energy Cosmic Rays Observed in Stereo by HiRes
- Evidence for a Galactic gamma ray halo
- The Case for a Low Extragalactic Gamma-ray Background
- EGRET Gamma-Ray Blazars: Luminosity Function and Contribution to the Extragalactic Gamma-Ray Background
- ORIGIN OF THE HIGH ENERGY EXTRAGALACTIC DIFFUSE GAMMA RAY BACKGROUND
- Is the diffuse gamma background radiation generated by galactic cosmic rays?
- The Inverse-Compton And Extragalactic Components Of The Diffuse Gamma-Ray Emission
- A possible Universal Origin of Hadronic Cosmic Rays from Ultrarelativistic Ejecta of Bipolar Supernovae