Radio and X-ray observations of stellar mass black holes
Abstract
Most known black hole low-mass X-ray binaries (BH-LMXBs) are transients, spending long periods of time in quiescence, followed by bright outbursts during which the source luminosity increases by several orders of magnitude. During these outbursts, BH-LMXBs can transition through a series of accretion states, distinguishable through changes in the source's X-ray and radio properties. In the hard state, where strong radio emission indicates the presence of a compact jet, BH-LMXBs are often seen to trace out distinct paths in the radio luminosity ($L_{r}$) - X-ray luminosity ($L _{X}$) plane. Correlated emission suggests a close link between the innermost regions of the accretion flow and the jet. I will discuss recent results from simultaneous radio and X-ray studies of BH-LMXBs, including an intensive multi-wavelength campaign to monitor a BH as it fades to quiescence in an attempt to understand the underlying accretion and jet properties at the lowest luminosities.
- Publication:
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43rd COSPAR Scientific Assembly. Held 28 January - 4 February
- Pub Date:
- January 2021
- Bibcode:
- 2021cosp...43E1706S