A dataset provided by the European Space Agency

Name 050175
Title High-accretion rate polars - Caught in the act!


DOI https://doi.org/10.5270/esa-mwlcuzi
Author Dr Axel Schwope
Description 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.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2007-10-20T06:36:05Z/2007-10-20T20:21:42Z
Version 17.56_20190403_1200
Mission Description The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations.
Since Earth's atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2008-11-22T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2008-11-22T00:00:00Z, 050175, 17.56_20190403_1200. https://doi.org/10.5270/esa-mwlcuzi