| Name | 080180 |
| Title | Accretion and Pulsations in GW Librae 10 years after its 2007 outburst |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0801800201 |
| DOI | https://doi.org/10.5270/esa-tm5883l |
| Author | European Space Agency |
| Description | GW Lib is a dwarf nova with only two known outbursts (1983 and 2007). In the XMM-Newton observation in quiescence, it was a faint (<10e29 erg/s) and relatively soft X-ray source with a strong oxygen line. During and shortly after the 2007 outburst, it was significantly more X-ray luminous with no obvious signs of a strong oxygen line. A decade after the 2007 outburst, GW Lib is securely back in quiescence, when the disk instability model predicts very a low accretion rate. GW Lib is also the prototype of dwarf novae with non-radial pulsations of the white dwarf, and it will be in the field of view of K2 campaign 15 (2017 Aug 23-Nov 20). We propose a new XMM-Newton observation to probe how and at what rate the white dwarf is accreting, while also studying its pulsation properties. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2018-02-17T05:46:41Z/2018-02-17T21:36:41Z |
| 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 | 2019-03-06T23:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2019, Accretion And Pulsations In Gw Librae 10 Years After Its 2007 Outburst, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-tm5883l |