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arXiv · 0712.3052

Variable Low-Mass X-ray Binaries in Early-Type Galaxies

Gregory R. Sivakoff·Andrés Jordán·Adrienne M. Juett·Craig L. Sarazin·Jimmy A. Irwin
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Abstract

As the Chandra X-ray Observatory mission matures, increasing numbers of nearby galaxies are being observed multiple times, sampling the variability of extragalactic X-ray binaries on timescales extending from seconds to years. We present results on luminous low-mass X-ray binaries from several early-type galaxies. We show that instantaneous LMXB luminosity functions of early-type galaxies do not significantly change between observations; a relatively low fraction of sources are strongly variable on <~ 5 yr timescales. We discuss the implications that a relatively small number of transient LMXBs are being discovered in early-type galaxies.

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Gregory R. Sivakoff, Andrés Jordán, Adrienne M. Juett, Craig L. Sarazin, Jimmy A. Irwin. 2007-12-18. Variable Low-Mass X-ray Binaries in Early-Type Galaxies. https://doi.org/10.1063/1.2945063

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