A dataset provided by the European Space Agency

Name 040233
Title The big dipper to learn about accretion disks and their ionized atmosphere


DOI https://doi.org/10.5270/esa-s5akfje
Author Dr Laurence Boirin
Description With the discovery of FeXXV and FeXXVI absorption lines in the dipping systems (viewed close to the disk plane), XMM has revealed the existence of a highly-ionized atmosphere above the accretion disk in low-mass X-ray binaries. We have further demonstrated that the spectral changes during dips, both in the lines and in the continuum could be explained by a decrease in the ionization level of this plasma. We want to investigate the structure of the disk and of its ionized atmosphere through time-resolved spectroscopy of the dips in X 1624-490. Using the orbital ephemeris, we propose to trigger 4 observations, each one centered on one dip, for a total exposure of 104 ks.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2006-08-17T03:21:14Z/2007-02-15T10:04:25Z
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 2008-11-24T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2008-11-24T00:00:00Z, 040233, 17.56_20190403_1200. https://doi.org/10.5270/esa-s5akfje