The increase in the hard X-ray flux from SN 1987A detected with the HEXE and Pulsar X-1 telescopes aboard the KVANT module's Roentgen observatory

Details The increase in the hard X-ray flux from SN 1987A detected with the HEXE and Pulsar X-1 telescopes aboard the KVANT module's Roentgen observatory The increase in the hard X-ray flux from SN 1987A detected with the HEXE and Pulsar X-1 telescopes aboard the KVANT module's Roentgen observatory

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pazh...14..579s&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 14, July 1988, p. 579-590. In Russian. In Russian. In Russian.

Astronomy and Astrophysics

Astronomy

5

Cobalt Isotopes, Compton Effect, Radiation Spectra, Satellite-Borne Instruments, Supernova 1987A, X Ray Sources, Emission Spectra, Line Spectra, Telescopes

Scientific paper

Observations of SN 1987A carried out during August 1987-February 1988 using the Hexe and Pulsar X-1 telescopes aboard the Mir station's Kvant module revealed a significant increase in the hard X-ray flux from the supernova in the 20-400 keV range. The radiation spectrum and its rate of increase can only be explained by models associated with gamma-line Comptonization, which arises during radioactive Co-57 decay. The early appearance of Co-57 line emission and the relatively slow increase in intensity suggests either substantial Co mixing over a significant part of the ejected envelope, or significant nonspherical geometry of the supernova envelope.

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