Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aipc..232..199t&link_type=abstract
IN: Gamma-ray line astrophysics; Proceedings of the International Symposium, Paris, France, Dec. 10-13, 1990 (A92-43619 18-90).
Astronomy and Astrophysics
Astrophysics
1
Gamma Ray Spectra, Line Spectra, Stellar Mass Ejection, Stellar Structure, Supernova 1987A, Balloon-Borne Instruments, Cobalt Isotopes, Gamma Ray Spectrometers, Infrared Spectra, Radioactive Isotopes
Scientific paper
A few balloon-borne-instrument measurements of SN1987A's gamma-ray line profiles furnish the most direct indication of the distribution of freshly synthesized Co-56 radioactive material in the SN ejecta. Most of these profiles exhibit line shapes inconsistent with the standard, spherically symmetric and homogeneously mixed models, and are very similar to line profiles for IR lines of Fe observed prior to day 500 of the SN. The consistency of the line profile from IR to gamma-ray energies may reflect the distribution of freshly synthesized material in the expanding SN shell.
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