| Name | 002494 |
| Title | X-ray Emission in Wolf-Rayet Stars: XMM Reveals the Shocking Truth |
| URL | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0024940201 |
| DOI | https://doi.org/10.5270/esa-at6pogz |
| Author | European Space Agency |
| Description | The ROSAT all-sky survey detected X-ray emission from single Wolf-Rayet (WR) stars and WR binaries. Because of their weaker emission, no spectra of single WR stars presently exist that are of sufficient quality to test theories of their X-ray emission. We propose to utilize the large effective area of XMM to obtain the first high-quality spectrum of a single WR star. Current theories attribute the X-ray emission of single stars to strong shocks that form in their winds as a result of radiative instabilities. If such theories are correct, then the XMM spectra should show only cooler plasma with temperatures below 1 keV. If hotter plasma is detected then radiative shock models will be ruled out. |
| Publication | No observations found associated with the current proposal |
| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2001-03-22T01:40:28Z/2001-03-22T08:52:10Z |
| 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 | 2002-06-01T00:00:00Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2002, X-Ray Emission In Wolf-Rayet Stars: Xmm Reveals The Shocking Truth, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-at6pogz |