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1994A&A...292..569L - Astronomy and Astrophysics, volume 292, 569-579 (1994/12-2)
COMPTEL upper limits on gamma-ray line emission from Supernova 1991T.
LICHTI G.G., BENNETT K., DEN HERDER J.W., DIEHL R., MORRIS D., RYAN J., SCHOENFELDER V., STEINLE H., STRONG A.W. and WINKLER C.
Abstract (from CDS):
The imaging Compton telescope COMPTEL on board of 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. From June 15 to 28, 1991 and again from October 3 to 17, 1991 the region containing the supernova SN 1991T was observed. A search for γ-ray line emission from the supernova yields no detection of line emission from the supernova. 2σ upper limits for the two predicted lines at 847keV and at 1.238MeV of ≃3.10–5photons/(cm2.s) were derived. These limits are compared with the predictions of some theoretical models and constraints imposed by these limits on these models are discussed.
Abstract Copyright: ∼
Journal keyword(s): gamma-rays - gamma-ray lines - nucleosynthesis - supernovae - SN 1991T
Simbad objects: 6
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