|Title||The energy budget of soft X-ray selected polars revisited|
|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|
|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.
|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|