|Title||Is the white dwarf in HS2331+3905 a rapid rotator?|
|Author||Dr Boris Gaensicke|
|Description||We have recently identified the cataclysmic variable (CV) HS2331+3905, which displays a fascinating combination of properties: it is probably one of the oldest known CVs with a brown dwarf donor, it is brightest CV containing a pulsating white dwarf which is probably rotating with a very short spin period of 67s, and it may harbour a precessing warped accretion disc. We have already explored this system from the ultraviolet into the infrared, and request here XMM-Newton time to unambiguously determine whether the white dwarf in HS2331+3905 is a magnetic rapid rotator.|
|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, 2007-09-30T00:00:00Z, 030557, 17.56_20190403_1200. https://doi.org/10.5270/esa-ktfk3ca|