The detection of an unidentified variable gamma-ray source by COMPTEL.

Authors

O R. Williams, ESTEC
R Much, ESTEC
K Bennett, ESTEC
H Bloemen, Space Research Organization of the Netherlands
W Collmar, Max-Planck-Institut für extraterrestriche Physik
W Hermsen, Space Research Organization of the Netherlands (SRON)
G G. Lichti, Max-Planck-Institut für extraterrestrische Physik
Mark L. McConnell, University of New Hampshire - Main CampusFollow
James M. Ryan, University of New HampshireFollow
V. Schonfelder, Max-Planck-Institut für extraterrestriche PhysikFollow
H Steinle, Max-Planck-Institut für extraterrestriche Physik
C Winkler, ESTEC

Abstract

We report the detection of an unidentified, high galactic latitude, γ-ray source (GRO J1753+57) by the COMPTEL instrument onboard the Compton Gamma-ray Observatory. The source was clearly detected during observations in November 1992 and had a flux in the 1-3MeV band of approximately half that of the Crab. All other observations of this region by COMPTEL only yield upper limits, or marginal detections, showing that this source is highly variable on a timescale of weeks. Possible counterparts are discussed.

Department

Physics

Publication Date

5-1995

Journal Title

Astronomy and Astrophysics

Publisher

European Southern Observatory (ESO)

Document Type

Article

Recommended Citation

O.R. Williams, R. Much, K. Bennett, H. Bloemen, W. Collmar, W. Hermsen, G.G. Lichti, M. McConnell, J. Ryan, V. Schönfelder, H. Steinle, and C. Winkler. THE DETECTION OF AN UNIDENTIFIED VARIABLE GAMMA-­RAY SOURCE BY COMPTEL. 1995, Astron. Astrophys., 297, L21.