| Name | 050264 |
| Title | Testing Boundary Layer Theory with XMM-Newton Observations of Dwarf Novae |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0502640201 |
| DOI | https://doi.org/10.5270/esa-6go95ln |
| Author | Prof Patrick Godon |
| Description | We propose to obtain XMM-Newton observations of two dwarf novae above the period gap, to probe and characterize the structure and nature of their boundary layers. In particular RU Peg contains the hottest WD in a DN, and SS Aur has a near Chandrasekhar mass WD, and both are at very low inclination and have excellent parallax distances. The Spectra will allow us to characterize the type of X-ray spectra exhibited by the systems, temperatures and densitites in the BLs and to map out the velocity structure of the BL by using the line widths of X-ray lines formed at different temperatures to examine wind outflow versus high rotational velocity of the BL and the extent to which X-ray BL is decelerated from the Keplerian motion of the inner disk (5,000km-s for these 2 massive WDs). |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2008-04-07T08:17:45Z/2008-04-07T23:30:41Z |
| 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 | 2009-06-05T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2009-06-05T00:00:00Z, 050264, 17.56_20190403_1200. https://doi.org/10.5270/esa-6go95ln |