| 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 ~60 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 |
| Last Update | 2025-01-27 |
| Keywords | "kl dra", "outburst cycle", "uv flux mirrors", "xray transients", "helium dwarf nova", "xray component", "orbital periods", "xmm newton", "drive forward", "disc instabilities", "interacting binary", "XMM-Newton", "optical outburst", "am cvn systems", "XMM", "low flux" |
| 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 |