Radio Emission from an Ultraluminous X-Ray Source

Details Radio Emission from an Ultraluminous X-Ray Source Radio Emission from an Ultraluminous X-Ray Source

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003head....7.0702k&link_type=abstract

American Astronomical Society, HEAD meeting #7, #07.02; Bulletin of the American Astronomical Society, Vol. 35, p.608

Astronomy and Astrophysics

Astronomy

Scientific paper

The physical nature of ultraluminous x-ray sources is uncertain. Stellar mass black holes with beamed radiation and intermediate black holes with isotropic radiation are two plausible explanations. We discovered radio emission from an ultraluminous x-ray source in the dwarf irregular galaxy NGC 5408. The x-ray, radio and optical fluxes as well as the x-ray spectral shape are consistent with beamed relativistic jet emission from an accreting stellar black hole. If confirmed, this would suggest that the ultraluminous x-ray sources may be stellar-mass rather than intermediate mass black holes. However, interpretation of the source as a jet-producing intermediate-mass black hole cannot be ruled out at this time.

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