A large number of hard X-ray galactic sources are detected in the INTEGRAL andSwift surveys, among them virgul20percent are accreting white dwarf (WD) binaries(CVs). The majority harbours asynchronously rotating magnetic primaries, whichnowdays are disputed to be the dominant galactic population of low-luminosityX-ray sources. While optical follow-ups allow to find magnetic CV candidates,asecure identification of their true nature resides in the X-rays. WithXMM-Newton we could successfully prove or disprove the magnetic nature for 24sources. We here propose to continue our identification programme with 8 newcandidates with the ultimate goal to obtain a true census of the firstvolume-limited sample of hard X-ray CVs.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2015-05-05T05:32:23Z/2016-04-01T18:06:38Z
Version
17.56_20190403_1200
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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.
European Space Agency, Dr Domitilla de Martino, 2017, 'Characterization of hard X-ray selected binaries:a census of magnetic CVs', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-kwioxdz
