|Title||Gamma Cas: double trouble|
|Author||Dr Jose Torrejon|
|Description||We propose to use the unique combination of high spectral resolution of XMM and the broadband coverage of NuSTAR to advance in the study of the nature of the mysterious Be-X-ray source gamma Cas. This object displays extreme conditions: a very hot plasma (>12 keV), a very hard spectrum, and a big circumstellar disk. Two hypotheses have been put forward to explain the origin of the X-ray emission in these objects: a) accretion onto a compact companion and b) emission from the star+disk interaction through stellar magnetic fields. Both of these challenge profoundly our current|
|Publication||The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
Soft and hard X-ray dips in the light curves of u03b3 Cassiopeiae . Smith, M. A., Lopes de Oliveira, R., . MNRAS . 488-5048 . 2019 . 2019MNRAS.488.5048S ,
|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, 2015-08-25T22:00:00Z, 074360, 17.56_20190403_1200. https://doi.org/10.5270/esa-w0ttnn2|