COMPTEL upper limits on gamma-ray line emission from supernova 1993J.

Details COMPTEL upper limits on gamma-ray line emission from supernova 1993J. COMPTEL upper limits on gamma-ray line emission from supernova 1993J.

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26as..120c.353l&link_type=abstract

Astronomy and Astrophysics Supplement, v.120, p.353-356

Astronomy and Astrophysics

Astrophysics

2

Gamma-Rays, Observations, Theory, Nucleosynthesis, Supernovae: Individual: Sn 1993J

Scientific paper

The imaging Compton telescope COMPTEL on board the Compton Gamma-Ray Observatory (CGRO) measures γ-rays in the energy range 0.75-30MeV with an energy resolution of 9.7% FWHM at 1MeV. Shortly after the discovery of SN 1993J on March 29 1993, the region containing this source was observed from April 6 to 12, 1993 and again from June 29 to July 27, 1993. A search for γ-ray line emission from the supernova yields no detection. 2σ upper limits for the two predicted lines at 847keV and at 1.238MeV of 6.2x10^-5gamma/(cm^2^.s) and 2.9x10^-5gamma/(cm^2^.s), respectively, were derived. These limits are compared with the predictions of some theoretical models.

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