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X-Ray Observation of SN1987A from Ginga

Published online by Cambridge University Press:  12 April 2016

Y. Tanaka
Y. Tanaka*
Affiliation:
Institute of Space and Astronautical Science3-1-1 Yoshinodai, Sagamihara Kanagawa Prefecture 229, Japan

Abstract

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An unusual hard X-ray source was discovered in an error box of 0.2° × 0.3° including SN1987A from the X-ray astronomy satellite Ginga. The energy spectrum is quite unusual for any known classes of X-ray source, and apparently consists of two separate components, a soft component and a very hard component. This source is considered to be identified with SN1987A. The X-ray emergence occurred in July, 1987, or possibly even earlier. The soft component is significantly time-variable and also showed a flare-like increase in January, 1988, while the intensity of the hard component has remained relatively unchanged for more than 200 days.

Type
Part III. Chemical and Dynamical Structures of Exploding Stars
Information
International Astronomical Union Colloquium , Volume 108: Atmospherics Diagnostics of Stellar Evolution: Chemical Peculiarity, Mass Loss, and Explosion , 1988 , pp. 399 - 405
Copyright
Copyright © Springer-Verlag 1988

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