A dataset provided by the European Space Agency

Name 072837
Title Probing the nature of the circumstellar environment around periastron


DOI https://doi.org/10.5270/esa-bjkuzeb
Author Dr Sebastian Drave
Description The mass transfer and accretion mechanisms in SFXTs are key questions to place
them in the wider context of HMXB systems. Current theories centre on mass
transfer via isotropic but inhomogeneous (.clumpy.) winds, but some systems also
show evidence of disk-like structures around the supergiant, analogous to those
seen in Be/X-ray binaries. We propose a campaign of periastron observations of 2
SFXTs with known ephemerides. Simultaneous INTEGRAL/XMM observations will
measure the instantaneous accretion rate, emission spectrum and time variability
generated on and around the neutron star. Continuous broad-band observations
around periastron yield the best opportunity to use the neutron star as a direct
probe of the circumstellar wind environment.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2014-10-13T23:29:03Z/2014-10-15T21:50:00Z
Version 17.56_20190403_1200
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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2015-11-04T23:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Sebastian Drave, 2015, 072837, 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-bjkuzeb