Neutron star mass through hydrodynamics in obscured sgHMXB systems
Abstract
Obscured sgHMXB discovered by INTEGRAL are characterized by slow stellar winds. The gravity of the accreting neutron star has therefore an important impact on the wind accretion flow. The variability of the absorbing column density with orbital phase and the long term X-ray variability can be directly compared to the predictions of hydrodynamical models to constrain the mass of the neutron star, with an accuracy of a few tenth of solar mass, and the dynamics of the accretion flow. We propose to observe an eclipsing absorbed sgHMXB with XMM to probe the accretion flow, to obtain an independent measure of the NS mass and to further test our hydrodynamical model.
- Publication:
-
XMM-Newton Proposal
- Pub Date:
- October 2013
- Bibcode:
- 2013xmm..prop..196M
- Keywords:
-
- White Dwarf Binaries;
- Neutron Star Binaries;
- Cataclysmic Variables;
- ULXs;
- Black Holes;
- IGR J18027-2016;
- IGR J18027-2016