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arXiv · astro-ph/9904018

BeppoSAX observations of the black hole candidates LMC X-1 and LMC X-3

A. Treves·M. R. Galli·F. Haardt·T. Belloni·L. Chiappetti·D. Dal Fiume·F. Frontera·E. Kulkeers·L. Stella
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Abstract

We describe BeppoSAX observations of the black hole candidates LMC X--1 and LMC X--3 performed in Oct. 1997. Both sources can be modelled by a multicolor accretion disk spectrum, with temperature $\sim 1$ keV. However, there is some evidence that a thin emitting component coexists with the thick disk at these temperatures. In the direction of LMC X--1, we detected a significant emission above 10 keV, which we suspect originates from the nearby source PSR 0540-69. For LMC X--1, we estimate an absorbing column density of $\simeq 6\times 10^{21}$ cm$^{-2}$, which is almost ten times larger than that found for LMC X--3. In both sources, we find no indication of emission or absorption features whatsoever.

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A. Treves, M. R. Galli, F. Haardt, T. Belloni, L. Chiappetti, D. Dal Fiume, F. Frontera, E. Kulkeers, L. Stella. 1999-04-01. BeppoSAX observations of the black hole candidates LMC X-1 and LMC X-3. https://doi.org/10.1016/s0273-1177(99)00775-9

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