| Name | 030656 |
| Title | X-ray eclipse mapping of disc-accreting white dwarfs |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0306560301 |
| DOI | https://doi.org/10.5270/esa-vxa0qm0 |
| Author | Dr Peter Wheatley |
| Description | We have applied the proven optical technique of eclipse mapping to X-ray observations of disc-accreting white dwarfs, allowing us to map the extent and distribution of X-ray emitting plasma around the compact object. Observations of four different systems have allowed us to build a consistent picture of the accretion geometry that depends only on accretion rate. At low rates the X-ray region is smaller than the white dwarf, but at high rates it is much larger. Here we propose an observation of ONE of our well-studied low accretion rate systems, to be triggered when it enters a high accretion rate state. This will allow us to test our basic picture in a system that differs only in accretion rate and investigate the origin of the second source of X-rays. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2005-09-30T01:22:41Z/2005-10-01T02:05:14Z |
| 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 | 2006-10-25T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Peter Wheatley, 2006, 030656, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-vxa0qm0 |