An Unidentified Variable Gamma-Ray Source near the Galactic Plane Detected by COMPTEL
Astrophysics
2009-11-07 v1
Abstract
We report the detection of an unidentified gamma-ray source near the Galactic plane by the COMPTEL experiment aboard the Compton Gamma-Ray Observatory. The source is detected at a significance level of ~ 7.2 sigma in the energy range 1-3 MeV and at ~ 4.6 sigma in the lower 0.75-1 MeV band in the time period March to July 1995. At energies above 3 MeV are only marginal hints or upper limits obtained. The MeV spectrum has a soft shape. Strong flux variability is found within one year at energies below 3 MeV. Possible counterparts of galactic and extragalactic nature are discussed.
Cite
@article{arxiv.astro-ph/0210220,
title = {An Unidentified Variable Gamma-Ray Source near the Galactic Plane Detected by COMPTEL},
author = {S. Zhang and W. Collmar and V. Schonfelder},
journal= {arXiv preprint arXiv:astro-ph/0210220},
year = {2009}
}
Comments
7 pages including 5 figures, accepted for publication in A&A