Obscured sgHMXB discovered by INTEGRAL are characterized by slow stellar winds.The gravity of the accreting neutron star has therefore an important impact onthe wind accretion flow. The variability of the absorbing column density withorbital phase and the long term X-ray variability can be directly compared tothe predictions of hydrodynamical models to constrain the mass of the neutronstar, with an accuracy of a few tenth of solar mass, and the dynamics of theaccretion flow. We propose to observe an eclipsing absorbed sgHMXB with XMM toprobe the accretion flow, to obtain an independent measure of the NS mass and tofurther test our hydrodynamical model.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2014-09-06T09:55:12Z/2014-09-13T00:53:08Z
Version
17.56_20190403_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.
European Space Agency, Dr Antonios Manousakis, 2015, 'Neutron star mass through hydrodynamics in obscured sgHMXB systems', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-ey8zufh
