Ultraluminous X-rays from the historical supernova 1986L: Testing stellar mass black hole scenario for the ULX origin
Abstract
The Type II-L SN 1986L was first discovered in X-ray through serendipitous Swift observations taken in 2005 and 2007 with a luminosity of 1.6*10^40 erg/s which is reminiscent of ULX that could either be an IMBH or a stellar mass black hole at (super-)Eddington accretion. While Type II-L SNe are suggested to explode in binary, we suspect that a stellar mass black hole remnant created by fallback forming an X-ray binary with the progenitor's companion to produce the ULX. As the positional accuracy of Swift prevents a solid identification, a deep Chandra observation is required to confirm the SN-ULX association. If confirmed, SN 1986L will be the first ULX detected in a young SNR, which favors the stellar mass black hole scenario.
- Publication:
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Chandra Proposal
- Pub Date:
- September 2014
- Bibcode:
- 2014cxo..prop.4368L