Variability in Ultra-luminous X-ray Sources
arXiv:1401.1728 · doi:10.1017/pasa.2014.1
Abstract
Many upcoming surveys, particularly in the radio and optical domains, are designed to probe either the temporal and/or the spatial variability of a range of astronomical objects. In the light of these high resolution surveys, we review the subject of ultra-luminous X-ray (ULX) sources, which are thought to be accreting black holes for the most part. We also discuss the sub-class of ULXs known as the hyper-luminous X-ray sources, which may be accreting intermediate mass black holes. We focus on some of the open questions that will be addressed with the new facilities, such as the mass of the black hole in ULXs, their temporal variability and the nature of the state changes, their surrounding nebulae and the nature of the region in which ULXs reside.
9 pages, 1 figure, accepted for publication in PASA
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Cited by in corpus (7)
- NuSTAR and XMM-Newton observations of the extreme ultraluminous X-ray source NGC 5907 ULX1: A Vanishing Act
- On the radio properties of the intermediate-mass black hole candidate ESO 243-49 HLX-1
- Numerical simulations of axisymmetric hydrodynamical Bondi-Hoyle accretion onto a compact object
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- Ultraluminous X-ray sources: three exciting years
- A comprehensive X-ray and multiwavelength study of the Colliding Galaxy Pair NGC2207/IC2163
- Wind accretion onto compact objects