A dataset provided by the European Space Agency

Name 067380
Title Detailed investigation of the outburst cycle of a helium dwarf nova


DOI 10.5270/esa-a4iik9n
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
Temporal Coverage 2011-09-19T04:19:24Z/2011-10-03T09:09:24Z
Version 17.56_20190403_1200
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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2012-10-25T00:00:00Z
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