OSSE observations of the Orion giant molecular cloud during 1996
Abstract
We have combined all OSSE spectra of the Orion molecular cloud complex obtained through the end of 1996 and searched them for evidence of cosmic-ray induced gamma -ray lines in the 3--7 MeV energy range, as detected by COMPTEL (Bloemen et al. 1994, 1997). We do not detect any significant line emission; our flux estimate for broad-line emission of 1.5 +/- 1.0 10(-4) gamma /(cm(2-s)) is consistent with the spatially-extended flux 1.3 10(-4) gamma /(cm(2-s)) measured by Bloemen et al. (1997).
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- January 1998
- Bibcode:
- 1998A&A...329..624H
- Keywords:
-
- ISM: INDIVIDUAL OBJECTS: ORION CLOUDS;
- COSMIC RAYS;
- GAMMA-RAYS: OBSERVATIONS