| Proposal ID | 067380 |
| Title | Detailed investigation of the outburst cycle of a helium dwarf nova |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0673800201 |
| DOI | https://doi.org/10.5270/esa-a4iik9n |
| Principal Investigator, PI | Dr Gavin Ramsay |
| Abstract | The AM CVn systems are interacting binaries with orbital periods <70 minutes.Their spectra show almost no hydrogen and are therefore excellent laboratoriesfor the study of helium dominated accretion flows. We have a monitoringprogramme to detect optical outbursts from these binaries and found that KL Draundergoes outbursts every virgul60 days. Observations made using Swift show the UVflux mirrors the optical. However, we were unable to draw firm conclusionsregarding the X-ray component due to its low flux. We propose to obtain a seriesof observations of KL Dra over an outburst using XMM-Newton. These are necessaryto drive forward theoretical models of disc instabilities these and otherbinaries such as X-ray transients. |
| Publications |
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| 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 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2012-10-25T00:00:00Z |
| Keywords | "drive forward", "kl dra", "disc instabilities", "helium dwarf nova", "am cvn systems", "XMM", "uv flux mirrors", "xray transients", "xray component", "outburst cycle", "optical outburst", "interacting binary", "low flux", "XMM-Newton", "xmm newton", "orbital periods" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Gavin Ramsay, 2012, 'Detailed investigation of the outburst cycle of a helium dwarf nova', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-a4iik9n |