A localized excess of diffuse gamma radiation

Details A localized excess of diffuse gamma radiation A localized excess of diffuse gamma radiation

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...445l.109c&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 445, no. 2, p. L109-L112

Astronomy and Astrophysics

Astronomy

8

Cosmic Rays, Diffuse Radiation, Galactic Structure, Gamma Ray Astronomy, Gamma Rays, H I Regions, Interstellar Matter, Radio Astronomy, Decimeter Waves, Density (Number/Volume), Gamma Ray Observatory, Ultrahigh Frequencies

Scientific paper

Using archival Energetic Gamma Ray Experiment Telescope (EGRET) gamma-ray data and atomic hydrogen (H I) column densities derived from 21 cm radio observations, we have found a large irregular region in the northern Galactic hemisphere extending from (l approximately 90 deg, b approximately 52 deg) to (l approximately 45 deg, b approximately 77 deg) with a significant enhancement in the gamma-ray emissivity compared to the surrounding sky. The region contains no previously identified gamma-ray point sources. The emission may arise from a localized enhancement in cosmic-ray density or from the presence of matter other than H I. If the emission is due to unseen matter, a column density enhancement equivalent to approximately 2 x 1020 H-atoms/sq cm is required.

Affiliated with

Also associated with

No associations

Rating

A localized excess of diffuse gamma radiation 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 localized excess of diffuse gamma radiation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A localized excess of diffuse gamma radiation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1202328