The total cosmic diffuse gamma-ray spectrum from 9 to 30 MeV measured with COMPTEL

Authors

S C. Kappadath, University of New Hampshire - Main CampusFollow
James M. Ryan, University of New HampshireFollow
K Bennett, ESTEC
H Bloemen, Space Research Organization of the Netherlands
R Diehl, Max-Planck-Institut für extraterrestricheFollow
W Hermsen, Space Research Organization of the Netherlands (SRON)
Mark L. McConnell, University of New Hampshire - Main CampusFollow
V Schonfelder, Max-Planck-Institut für extraterrestrische PhysikFollow
M Varendorff, Max-Planck-Institut für extraterrestrische PhysikFollow
G Weidenspointer, Max-Planck-Institut für extraterrestrische PhysikFollow
C Winkler, ESTECFollow

Abstract

A preliminary COMPTEL Cosmic Diffuse Gamma-Ray (CDG) spectrum from 800 keV to 30 MeV was presented earlier at the 3rd Compton Symposium. The COMPTEL results represent the first significant detection of the CDG radiation in the 9 to 30 MeV range. Using high-latitude data from the first 5 years of the mission we have performed a new detailed measurement of the 9 to 30 MeV spectrum with finer energy binning. The new improved results are in good agreement with our previous estimates and are compatible with power-law extrapolations from higher energies. The measured 9–30 MeV spectra from the Virgo and South Galactic Pole observations are consistent with each other.

Department

Space Science Center, Physics

Publication Date

1997

Journal Title

AIP Conference Proceedings

Publisher

AIP Publishing

Digital Object Identifier (DOI)

10.1063/1.54105

Document Type

Conference Proceeding

Recommended Citation

The total cosmic diffuse gamma-ray spectrum from 9 to 30 MeV measured with COMPTEL Kappadath, S. C. and Ryan, J. and Bennett, K. and Bloemen, H. and Diehl, R. and Hermsen, W. and McConnell, M. and Schönfelder, V. and Varendorff, M. and Weidenspointner, G. and Winkler, C., AIP Conference Proceedings, 410, 1218-1222 (1997), DOI:http://dx.doi.org/10.1063/1.54105

Rights

© 1997 American Institute of Physics