|Title||Physics of the neutron star magnetosphere in Supergiant Fast X-ray Transients|
|Author||Dr Lara Sidoli|
|Description||Supergiant Fast X-ray Transients show rare outbursts,while most of the time they are in a fainter state.The physical mechanism driving this behavior is controversial, with two competing models: quasi-spherical settling accretion and the propeller mechanism. Our analysis of archival XMM observations allowed us to select SFXT flares in an automatic way and to compare their timescales with the theory of magnetospheric instability in the NS magnetosphere. To get a statistically robust comparison with the models, it is crucial to enlarge the number of flares.This will result in the determination of the dimensionless parameters involved in the Rayleigh Taylor instability, impossible to obtain from the theory, directly probing the physics of the NS magnetosphere.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, 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, 2021-07-22T00:00:00Z, 086146, 18.02_20200221_1200. https://doi.org/10.57780/esa-yubzeu1|