|Title||X-ray Emission from Single Wolf-Rayet Stars|
|Author||Dr Richard Ignace|
|Description||Our central aim is to acquire a much needed X-ray spectral data set on single Wolf-Rayet (WR) star winds so as to infer temperatures and filling factors of hot wind (shock) components and hence elucidate the wind structure. This structure is crucial to testing wind driver and shock formation mechanisms and in particular the role of multiple photon scattering in optically thick winds. Our observing strategy: (1) Emphasize single star winds, as opposed to binary wind interactions; (2) Use strong WR subtype abundance variations to probe the hot gas with depth; (3) Use XMM.s large collecting area to obtain the first X-ray spectra of single WR stars in contrast to previous broadband measurements.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2003-09-18T00:00:00Z, 004014, 17.56_20190403_1200. https://doi.org/10.5270/esa-kbfqizf|