A dataset provided by the European Space Agency

Name 080180
Title Accretion and Pulsations in GW Librae 10 years after its 2007 outburst


DOI https://doi.org/10.5270/esa-tm5883l
Author Dr Koji Mukai
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, 2019-03-06T23:00:00Z, 080180, 17.56_20190403_1200. https://doi.org/10.5270/esa-tm5883l