|Title||X-ray pulsations of massive stars: XMM opens a new door to stellar physics|
|Author||Dr Lidia Oskinova|
|Description||With 355 ks of XMM time we propose to cardinally advance our knowledge of X-rays from beta Cep variables. This important class of massive stars provides the unique opportunity to study connections between photosphere and wind. This study is prerequisite to build up models, where the stellar atmosphere and interior are treated consistently. We propose to double the sample of stars with known X-ray pulsational behavior allowing to unravel the mechanisms coupling the inner and outer layers of star. We also propose to conduct the dedicated survey of beta Cep variables to find the correlations between X-ray and stellar properties. The new XMM data will bridge between asteroseismology and the physics of stellar winds, and revolutionize our understanding of massive stars.|
|Publication||On the Absence of Non-thermal X-Ray Emission around Runaway O Stars . Toala, J. A., Oskinova, L. M., . ApJ . 838-19 . 2017 . 2017ApJ...838L..19T ,
B stars seen at high resolution by XMM-Newton . Cazorla, Constantin, Naze, Yael, . A&A . 608-54 . 2017 . 2017A&A...608A..54C ,
|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, 2016-10-05T22:00:00Z, 076109, 17.56_20190403_1200. https://doi.org/10.5270/esa-r5s0oqk|