Detection of X-rays from SN 1987A with ROSAT

Details Detection of X-rays from SN 1987A with ROSAT Detection of X-rays from SN 1987A with ROSAT

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...420l..25g&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 420, no. 1, p. L25-L28

Astronomy and Astrophysics

Astronomy

35

Astronomical Models, B Stars, Ejecta, Magellanic Clouds, Stellar Winds, Supernovae, X Ray Astronomy, X Ray Binaries, Ginga Satellite, Luminosity, Mir Space Station, Proportional Counters, Rosat Mission, Stellar Color

Scientific paper

Soft X-rays (0.5-2 keV) were detected with the ROSAT Position-Sensitive Proportional Counter (PSPC) from the direction of SN 1987A, which falls within an association in the Large Magellanic Cloud (LMC) that is rich in B stars. The emission is consistent with two point sources in the LMC with total luminosity of approximately 1034 ergs/s. The brighter source is identified with SN 1987A on the basis of its positional agreement. We interpret the emission as arising from the interaction of supernova ejecta with the pre-existing blue giant wind. The second source may be an unidentified Be/X-ray binary. Another possibility is that the second source is an X-ray echo from the supernova outburst. The X-ray echo interpretation requires that the supernova emitted approximately 1047 ergs in a burst of soft X-rays.

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