A Revised Catalogue of EGRET Sources

Astronomy and Astrophysics – Astronomy

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

2

Scientific paper

For 9 years, EGRET has observed gamma-ray sources at energies above 100 MeV. They are detected above the intense interstellar radiation due to cosmic-ray interactions in the Milky Way. The comparison of gas and dust tracers with this radiation in the solar neighbourhood has revealed large amounts of dark gas at the transition between the HI and CO phases (Grenier et al. 2005, Science, 307, 1292). This phase is not seen in radio, but its column-densities, clumpiness, and large spread across the sky strongly affect the gamma-ray source detectability. We have revised the interstellar background model accordingly and present a new catalogue of EGRET sources above 100 MeV. One third of the former 3EG sources (Hartman et al. 1999, ApJS, 123, 79) have changed, either in position or in flux and significance. These changes primarily affect the unidentified sources. Over 50 sources, mostly those associated with the Gould Belt, are not confirmed as point sources. A search for likely blazar, pulsar, and supernova remnant counterparts has been performed on the new list and the results will be presented.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

A Revised Catalogue of EGRET Sources 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 Revised Catalogue of EGRET Sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Revised Catalogue of EGRET Sources will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-777160

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.