A BROAD-BAND X-RAY TELESCOPE OBSERVATION OF THE BLACK-HOLE CANDIDATE LMC X-1

We present the spectrum of the black hole candidate LMC X-1 as observed by the Broad-Band X-ray Telescope. The spectrum cannot be fitted by a simple model, but it requires a soft disk blackbody component and a power-law tail, confirming earlier studies. The blackbody disk component is essentially unchanged since the Ginga measurement in 1987. The implied mass of the compact object is similar to 4.7 root cos i M. from the soft component fit. We report a 95% confidence detection of weak emission features at similar to 5.1 keV and similar to-7.3 keV. If the 5.1 keV feature is attributed to Fe I K alpha at 6.39 keV, then the redshift is similar to 0.19. No quasi-periodic behavior is found in the data at this epoch.