Gamma-ray line emission from SN1987A

Details Gamma-ray line emission from SN1987A Gamma-ray line emission from SN1987A

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988natur.331..416m&link_type=abstract

Nature (ISSN 0028-0836), vol. 331, Feb. 4, 1988, p. 416-418. NASA-BMFT-supported research.

Astronomy and Astrophysics

Astronomy

182

Gamma Ray Spectrometers, Line Spectra, Solar Maximum Mission, Supernova 1987A, Earth Atmosphere, Monte Carlo Method, X Ray Astronomy

Scientific paper

The gamma-ray spectrometer on the Solar Maximum Mission satellite has observed a significant net line flux at ≡847 keV in the background-subtracted spectrum of SN 1987A. This is the energy of the strong gamma-ray line from decay of 56Co. The inferred average line flux during this period is ≡(1.0±0.25)×10-3 photons cm-2s-1 at an energy of 843±5 keV. There is also evidence for the 1,238-keV line from 56Co decay, with an average flux of ≡(6±2)×10-4 photons cm-2s-1. The observation confirms that 56Co is present in the supernova ejecta and that nucleosynthesis took place during the explosion.

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