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Today's Colloquium: Jetted Ultra- and Hyperluminous X-ray sources
| Submitter: | David Cseh (Radboud University Nijmegen) |
| Description: | Black holes typically release their accretion power in the form of radiation, jets, and winds that fundamentally regulate their environment. This effect is best understood if multi-wavelength observations are employed to test the energy coupling between these output channels. I will briefly introduce the concept, the prevailing models, and some of the milestone results of ultraluminous X-ray sources (ULXs). I will show our recent discovery of the jet of the ULX Holmberg II X-1. The energetics of the jet, the associated radio and optical bubble may imply the presence of a different kind of stellar-mass black hole and accretion history. After that I will focus on the origin of the radio emission and its evolution from an intermediate-mass black hole candidate, HLX-1. These recent findings point towards a promising era of future surveys capable to address whether the black holes are evenly populated, whether jets are indeed scale-invariant, or whether accretion can be unified. |
| Copyright: | David Cseh |
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