The ultraviolet-optical-infrared energy distribution of LMC X-3 - Observation of an accretion disk around a black hole

Details The ultraviolet-optical-infrared energy distribution of LMC X-3 - Observation of an accretion disk around a black hole The ultraviolet-optical-infrared energy distribution of LMC X-3 - Observation of an accretion disk around a black hole

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...335..142t&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 335, Dec. 1, 1988, p. 142-146.

Astronomy and Astrophysics

Astronomy

16

Accretion Disks, Black Holes (Astronomy), Magellanic Clouds, Spectral Energy Distribution, X Ray Binaries, Infrared Astronomy, Stellar Mass Accretion, Ultraviolet Astronomy, Visible Spectrum, X Ray Stars

Scientific paper

LMC X-3 was observed quasi-simultaneously at UV (IUE), optical, and IR (ESO, La Silla) frequencies in January, 1987. The overall energy distribution exhibits a broad peak around 10 to the 15th Hz. The UV flux appears well in excess of that measured in March, 1986, which can be attributed to the noncollapsed star in the system. The excess emission can be interpreted in termms of an accretion disk surrounding the collapsed component. A good spectral fit to the excess is obtained with a blackbody distribution with T about 14,000 K and a projected area A cos i about 3.7 x 10 to the 23rd/sq cm. Supposing that the disk radius equals the Roche lobe of the compact object, an inclination of about 55 deg is found. The results are discussed within the model of the system.

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