A Fallback Disk Model for Ultraluminous X-ray Sources

Abstract

Current stellar evolution models predict that during the core collapse of massive stars, a considerable amount of the stellar material will fall back onto the compact, collapsed remnants (neutron stars or black holes), usually in the form of an accretion disk. This triggers rapid mass accretion onto, e.g., the black hole, and produces energetic explosions known as Gamma-ray bursts. However it is very difficult to prove the existence of an accretion disk around newborn black holes observationally. Here we demonstrate that some of the ultraluminous X-ray sources in nearby galaxies, which are associated with supernova remnants, may be black holes accreting from their fallback disks, i.e., they have evolved from collapsars. Since it is almost certain that there is an accretion disk around these black holes, this would for the first time lend the observational support to the collapsar model.

6 pages, accepted for publication in ApJL

References in corpus (8)

• A very energetic supernova associated with the gamma-ray burst of 29 March 2003
• On the formation and evolution of black-hole binaries
• Radio Emission from an Ultraluminous X-Ray Source
• The optical counterpart of a Ultraluminous X-Ray Object in M81
• The unusual supernova remnant surrounding the ultraluminous X-ray source IC 342 X-1
• The Brightest Black Holes
• Chandra reveals a black-hole X-ray binary within the ultraluminous supernova remnant MF 16
• Gravitational-Wave Radiation from Magnetized Accretion Disks

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• Very Low Energy Supernovae from Neutrino Mass Loss
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• Where Are All The Fallback Disks? Constraints on Propeller Systems
• X-ray reflection in a sample of X-ray bright Ultraluminous X-ray sources
• The Nature of the Compact X-ray Source in Supernova Remnant RCW 103
• Comparing Spectral Models for ULXs with NGC 4517 ULX1
• Evolution of Intermediate-Mass Black Hole X-Ray Binaries
• Multiwavelength study of the bright X-ray source population in the interacting galaxies NGC5774/NGC5775
• Detection of X-ray elongated emission from a ultraluminous X-ray source in the interacting pair of galaxies NGC 5953/5954
• On the X-ray pulsar HD 49798: a contracting white dwarf with debris disk?