|Title||Detailed investigation of the outburst cycle of a helium dwarf nova|
|Author||Dr Gavin Ramsay|
|Description||The AM CVn systems are interacting binaries with orbital periods <70 minutes. Their spectra show almost no hydrogen and are therefore excellent laboratories for the study of helium dominated accretion flows. We have a monitoring programme to detect optical outbursts from these binaries and found that KL Dra undergoes outbursts every ~60 days. Observations made using Swift show the UV flux mirrors the optical. However, we were unable to draw firm conclusions regarding the X-ray component due to its low flux. We propose to obtain a series of observations of KL Dra over an outburst using XMM-Newton. These are necessary to drive forward theoretical models of disc instabilities these and other binaries such as X-ray transients.|
|Publication||Suppression of X-rays during an optical outburst of the helium dwarf nova KL Dra . Ramsay, Gavin, Wheatley, Peter J., et all. . MNRAS . 425-1486 . 2012 . 2012MNRAS.425.1486R ,
Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift . Yershov, V. N., . Ap&SS . 354-97 . 2014 . 2014Ap&SS.354...97Y ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
|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, 2012-10-25T00:00:00Z, 067380, 17.56_20190403_1200. https://doi.org/10.5270/esa-a4iik9n|