| Name | 000802 |
| Title | Demystifying the supersoft X-ray binary RXJ0439.8-6809 |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0008020101 |
| DOI | https://doi.org/10.5270/esa-53n3brw |
| Author | European Space Agency |
| Description | The supersoft X-ray source RX J0439.8-6809 is an extraordinary rare and interesting object: It is either the hottest known pre-white dwarf or an ultra-short period accreting double-degenerate white dwarf binary. In each case, J0439.8-6809 is an important cornerstone for the theory of stellar evolution, either post-AGB star evolution or the evolution of close binary systems. We propose to use the unprecedented X-ray sensitivity of XMM to clarify the nature of this object and to discern between these two hypotheses. With a 20 ksec XMM observation we will be able to detect binary orbital variability on minute time scales down to an amplitude of virgul1 percent. The EPIC pn/MOS spectra |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2001-11-01T05:35:11Z/2001-11-01T11:52:05Z |
| 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 | 2003-02-16T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2003, Demystifying The Supersoft X-Ray Binary Rxj0439.8-6809, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-53n3brw |