A dataset provided by the European Space Agency

Name 055474
Title The energy budget of soft X-ray selected polars revisited


DOI https://doi.org/10.5270/esa-qxjfjaj
Author Dr Klaus Reinsch
Description Since the early days of X-ray astronomy one of the central questions in our understanding of accretion onto magnetic white dwarfs in compact binaries is whether the flux ratio of their thermal and bremsstrahlung components is in accordance with theoretical expectations or not. We propose to continue our study of this issue with XMM-Newton observations of soft X-ray selected polars. The X-ray characteristics of our sample are complementary to the parameter space covered by previous observations of polars with XMM-Newton and Chandra. Extending the study of the spectral components, their flux contributions, and the physical structure of the accretion regions to systems with extreme X-ray characteristics is essential for a proper solution of this long-lasting controversy.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2009-03-12T12:34:41Z/2009-03-13T02:30:29Z
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 2010-04-04T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2010-04-04T00:00:00Z, 055474, 17.56_20190403_1200. https://doi.org/10.5270/esa-qxjfjaj