|Title||Episodic Mass Loss, Magnetic Fields and Surface Activity in Cool Hypergiants|
|Author||Dr Roberta Humphreys|
|Description||The complex circumstellar ejecta of the most luminous, evolved cool stars reveal multiple, asymmetric mass loss events. The loops, arcs and knots were ejected at different times in different directions apparently by localized processes from separate regions on the star. Strong magnetic fields measured in their ejecta support suggestions that their episodic mass loss may be driven by surface activity. We are proposing an exploratory XMM search for X-ray emission that should be associated with this surface convective-magnetic activity.|
|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, 2013-05-18T00:00:00Z, 069119, 17.56_20190403_1200. https://doi.org/10.5270/esa-vnl4f53|