Hauke Wörpel (AIP)

Unveiling the X-ray faint intermediate polars- source of the Galactic Ridge X-rays?
When May 16, 2019 from 02:30 PM to 03:30 PM
  • Colloquium
Where SH Lecture Hall
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The Galactic Ridge X-ray emission (GRXE), once thought to be a diffuse gas, is now known to be composed of many individually faint point sources. Their nature is still unknown but, at energies above a few keV, the intermediate polars (IPs)- strongly magnetised accreting white dwarfs- are thought to be the dominant contribution. However, only around 50 IPs have been definitively identified, and the existence of a hypothesized X-ray faint subpopulation has not yet been confirmed. In this colloquium I describe our XMM-Newton observing campaign of twelve promising candidates that may provide new examples of the elusive X-ray faint subclass.