COMPTEL upper limits on gamma-ray line emission from Supernova 1991T

Details COMPTEL upper limits on gamma-ray line emission from Supernova 1991T COMPTEL upper limits on gamma-ray line emission from Supernova 1991T

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...292..569l&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 292, no. 2, p. 569-579

Astronomy and Astrophysics

Astronomy

23

Astronomical Models, Distance, Gamma Ray Astronomy, Gamma Ray Spectra, Nuclear Fusion, Supernovae, Astronomical Maps, Cobalt Isotopes, Gamma Ray Observatory, Gamma Ray Telescopes, Iron, Likelihood Ratio, Nickel Isotopes

Scientific paper

The imaging Compton telescope COMPTEL on board the Compton Gamma-Ray Observatory (CGRO) measures gamma-rays in the energy range 0.75-30 MeV with an energy resolution of 9.7% full width at half maximum (FWHM) at 1 MeV. 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 gamma-ray line emission from the supernova yields no detection of line emission from the supernova. 2 sigma upper limits for the two predicted lines at 847 keV and at 1.238 MeV of approximately equal to 3 x 10-5 photons/(sq cm)(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.

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