Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-05-22
Astrophys.J. 613 (2004) 956-961
Astronomy and Astrophysics
Astrophysics
Accepted for publication in The Astrophysical Journal; 6 pages, 14 ps-figures, 4 tables emulateapj.sty, natbib.sty, aastex.cls
Scientific paper
10.1086/423196
We use the GALPROP model for cosmic-ray propagation to obtain a new estimate of the Galactic component of gamma rays, and show that away from the Galactic plane it gives an accurate prediction of the observed EGRET intensities in the energy range 30 MeV - 50 GeV. On this basis we re-evaluate the extragalactic gamma-ray background. We find that for some energies previous work underestimated the Galactic contribution at high latitudes and hence overestimated the background. Our new background spectrum shows a positive curvature similar to that expected for models of the extragalactic emission based on the blazar population.
Moskalenko Igor V.
Reimer Olaf
Strong Andrew W.
No associations
LandOfFree
A new determination of the extragalactic diffuse gamma-ray background from EGRET data does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A new determination of the extragalactic diffuse gamma-ray background from EGRET data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A new determination of the extragalactic diffuse gamma-ray background from EGRET data will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-261401