We propose to observe the high inclination low mass X-ray binary 2S0921-630in order to test the hypothesis that the residual X-rays seen during eclipse are due to reprocessing and scatttering in an accretion disk corona. By observing atomic emission features from elements such as Ne, Mg, Si, and S athigh resolution using RGS1, we can determine the ionization state and emissionmeasure, and thereby infer the density and size of the corona. We can alsoconstrain the elemental abundances. Using the EPIC detectors we can test forvariability in the spectrum during the eclipse, and constrain the geometricalextent of the corona. This source is ideal for such a study owing to itsdemonstrated strong line emission and its long eclipse.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2000-12-20T07:24:25Z/2000-12-21T04:56:37Z
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 Timothy Kallman, 2002, 'High Resolution Spectroscopy of the ADC Source 2S0921-630', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-4ix1f75
