High-accretion rate polars - Caught in the act!

Details High-accretion rate polars - Caught in the act! High-accretion rate polars - Caught in the act!

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006xmm..prop...59s&link_type=abstract

XMM-Newton Proposal ID #05017507

Physics

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, Ef Eri, Vv Pup, V834 Cen, V884 Her, Uz For, Am Her, Qq Vul, Xmm-Newton Proposal 05017507

Scientific paper

The spectral components of polars - strongly magnetic CVs - were barely disentangled by previous X-ray missions. The physics of accretion in a strongly magnetic, non-relativistic environment is therefore still puzzling. XMM-Newton, in principle, can solve the riddle. But even after 6 years in the mission, none of the bright, classical polars was observed in a high accretion state. We propose a triggered observation of such a system. We will investigate the physics of the hard X-ray emitting shock, the heated accretion pole cap, the atmosphere of the white dwarf, the absorption in the shock and in the flow, the lines in the accretion flow an the reflection from the white dwarf by phase-resolved CCD- and RGS-spectroscopy and by high-speed OM-photometry.

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