NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-21 T02:11:14 PDT
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For refcode 2011NewA...16..187P:
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2011NewA...16..187P Evidence for a possible black hole remnant in the Type IIL Supernova 1979C Patnaude, D. J.; Loeb, A.; Jones, C. Abstract. We present an analysis of archival X-ray observations of the Type IIL supernova SN 1979C. We find that its X-ray luminosity is remarkably constant at (6.5 +/- 0.1) x 10^38^ erg s^-1^ over a period of 12 years between 1995 and 2007. The high and steady luminosity is considered as possible evidence for a stellar-mass (~5-10 M_o_) black hole accreting material from either a supernova fallback disk or from a binary companion, or possibly from emission from a central pulsar wind nebula. We find that the bright and steady X-ray light curve is not consistent with either a model for a supernova powered by magnetic braking of a rapidly rotating magnetar, or a model where the blast wave is expanding into a dense circumstellar wind.
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