Constraints on Accretion Scenarios using X-ray Measurements of the Black Hole Candidate OGLE-1999-BUL-32

Details Constraints on Accretion Scenarios using X-ray Measurements of the Black Hole Candidate OGLE-1999-BUL-32 Constraints on Accretion Scenarios using X-ray Measurements of the Black Hole Candidate OGLE-1999-BUL-32

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprn17084w&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

Straightforward interpretation of the spectacular microlensing event OGLE-1999-BUL-32 indicates that the lens is either a ~130 solar mass black hole at 500 pc or a ~30 solar mass black hole at 6 kpc. This object likely presents an unprecedented opportunity to study X-ray emission from an isolated black hole traveling through the interstellar medium. The three major accretion scenarios (spherical, thin disk and ADAF) predict very different UV through hard X-ray spectra. Using publicly available X-ray and optical data we explore the constraints on possible accretion geometries. We also investigate the possible impact of new observations with currently active X-ray missions.

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