|Title||Contemporaneous X-ray spectroscopy and optical spatial studies of gamma Cas|
|Author||Dr Myron Smith|
|Description||gamma Cas is the prototype of a Be star group with peculiar X-ray properties. Its X-rays may be produced either by a disk-star magnetic interaction or accretion onto a companion. We will resolve this puzzle by testing for correlations of X-ray continuum-line properties and binary phase, and also by staging optical spectroscopy and interferometry to map the disk.s spatial and kinematic properties. Large column density changes were found from one pair of Chandra and XMM spectra obtained at contrasting binary phases (=.74 and 0.16) when high X-ray absorption occurred. We ask: is this difference in absorption persistent with phase?|
|Publication||The relationship between gamma Cassiopeiae.s X-ray emission and its circumstellar environment . Smith, M. A., Lopes de Oliveira, R., et all. . A&A . 540-53 . 2012 . 2012A&A...540A..53S ,
Characterization of the X-Ray Light Curve of the gamma Cas-like B1e Star HD 110432 . Smith, Myron A., Lopes de Oliveira, Raimundo, . ApJ . 755-64 . 2012 . 2012ApJ...755...64S ,
An XMM-Newton view of FeKalpha in high-mass X-ray binaries . Gimenez-Garcia, A., Torrejon, J. M., et all. . A&A . 576-108 . 2015 . 2015A&A...576A.108G ,
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, 2011-09-08T00:00:00Z, 065167, 17.56_20190403_1200. https://doi.org/10.5270/esa-0raaiun|