Ultraluminous X-Ray Sources and Intermediate Mass Black Holes

Details Ultraluminous X-Ray Sources and Intermediate Mass Black Holes Ultraluminous X-Ray Sources and Intermediate Mass Black Holes

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001cxo..prop..800b&link_type=abstract

Chandra Proposal ID #03400017

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Chandra Proposal Id #03400017

Scientific paper

Ultraluminous X-ray sources (ULX) are second only to AGNs in point-source luminosity yet they have no known optical counterparts. These extraordinary X-ray objects, which radiate at the Eddington luminosity of a 30-100 Mo object, are non-nuclear sources in normal disk galaxies. One explanation is that they are binary systems where the accreting black hole has a mass of 30-100 Mo. Another possibility is that ULXs are intermediate mass black holes (1E3-1E4 Mo), acting as micro-quasars in galaxy disks and representing the link between stellar black holes (4-10 Mo) and supermassive black holes (1E6-1E10 Mo). We can distinguish between the models by identifying the optical counterparts of ULXs and measuring their colors.

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