|Title||Extending the XMM-Newton survey of AM CVn systems to longer periods|
|Author||Dr Gavin Ramsay|
|Description||We have an on-going project to survey the ultra-compact AM CVn systems using XMM-Newton. These accreting binaries have periods less than virgul70 min and are hydrogen deficient. They are important astrophysically because they are expected to be strong sources of gravitational radiation in the peak sensitivity band of LISA. XMM-Newton has so far observed 7 of the 13 AM CVn systems, but this is biased towards shorter period systems. We propose to observe another 4 systems to give us a comprehensive sample of these objects. In particular, we will determine the element abundance from their X-ray spectra and characterise the X-ray and UV variability as a function of orbital period. This is essential for our understanding of their evolutionaryhistory and their energy balance.|
|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, 2007-01-27T00:00:00Z, 030216, 17.56_20190403_1200. https://doi.org/10.5270/esa-3bl8p45|