Ultraluminous X-ray Sources: Beambags and Optical Counterparts

Details Ultraluminous X-ray Sources: Beambags and Optical Counterparts Ultraluminous X-ray Sources: Beambags and Optical Counterparts

2008-03-30

arxiv.org/abs/0803.4345v1

AIP Conf.Proc.1010:303-307,2008

Astronomy and Astrophysics

Astrophysics

To be published in Proceedings of "A Population Explosion: The Nature and Evolution of X-ray Binaries in Diverse Environments"

Scientific paper

10.1063/1.2945062

A significant fraction of ultraluminous X-ray sources appear to be embedded in observable ionized nebulae that take the form of large, several 100 pc diameter interstellar bubbles. Here we review optical observations of these bubbles, their importance for our understanding of the nature of ULXs, the energetics involved and their formation and evolution. Among the results obtained are new arguments against conventional superbubble scenarios and hypernova remnants, and we present the case in favour of ULX-wind/jet driven bubbles. We report the discovery of new ULXs in very large SNR candidates in nearby galaxies, and finally present an image of a triple X-ray source coincident with the radio-bright bubble S26 in the galaxy NGC 7793 which appears to be a clone of the microquasar SS433/W50 system.

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