A dataset provided by the European Space Agency

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 Dr Stephen Skinner
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, 2002-06-01T00:00:00Z, 002494, 17.56_20190403_1200. https://doi.org/10.5270/esa-at6pogz