A dataset provided by the European Space Agency

Name: Physics of the neutron star magnetosphere in Supergiant Fast X-ray Transients
Published: 2021-07-22T00:00:00Z

Proposal ID	086146
Title	Physics of the neutron star magnetosphere in Supergiant Fast X-ray Transients
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0861460101
DOI	https://doi.org/10.57780/esa-yubzeu1
Principal Investigator, PI	Dr Lara Sidoli
Abstract	Supergiant Fast X-ray Transients show rare outbursts,while most of the time theyare in a fainter state.The physical mechanism driving this behavior iscontroversial, with two competing models: quasi-spherical settling accretionand the propeller mechanism. Our analysis of archival XMM observations allowedus to select SFXT flares in an automatic way and to compare their timescaleswith the theory of magnetospheric instability in the NS magnetosphere. To get astatistically robust comparison with the models, it is crucial to enlarge thenumber of flares.This will result in the determination of the dimensionlessparameters involved in the Rayleigh Taylor instability, impossible to obtainfrom the theory, directly probing the physics of the NS magnetosphere.
Publications	Detecting the intrinsic X-ray emission from the O-type donor star and the residual accretion in a supergiant fast X-ray transient in its faintest state \|Sidoli L. Postnov K. et al. \| A&A \| 654-131 \| 2021 \| 2021A&A...654A.131S \| http://ui.adsabs.harvard.edu/#abs/2021A&A...654A.131S From Active Stars to Black Holes: A Discovery Tool for Galactic X-Ray Sources \|Rodriguez Antonio C. \| PASP \| 136-054201 \| 2024 \| 2024PASP..136e4201R \| http://ui.adsabs.harvard.edu/#abs/2024PASP..136e4201R
Instrument	EMOS1, EMOS2, EPN, RGS1, RGS2
Temporal Coverage	2020-06-01T19:28:21Z/2020-06-02T08:48:21Z
Version	18.02_20200221_1200
Mission Description	The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs 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 Earths 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.
Creator Contact	https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published	2021-07-22T00:00:00Z
Last Update	2025-01-27
Keywords	"magnetospheric instability", "physical mechanism driving", "select sfxt flare", "neutron star magnetosphere", "rare outburst", "ns magnetosphere", "statistically robust comparison", "rayleigh taylor instability", "propeller mechanism", "dimensionless parameters involved", "XMM", "archival xmm"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Lara Sidoli, 2021, 'Physics of the neutron star magnetosphere in Supergiant Fast X-ray Transients', 18.02_20200221_1200, European Space Agency, https://doi.org/10.57780/esa-yubzeu1