|Title||4U 1957+11: A POSSIBLE BLACK HOLE ACCRETION DISK CORONA SOURCE|
|Author||Dr JEROEN HOMAN|
|Description||We propose XMM-Newton observations of the persistent low-mass X-ray binary 4U 1957+11. This source, which probably contains a black hole primary, is viewed at a high inclination, which allows for a detailed study of the accretion flow. Our aim is to study the geometry and properties of the accretion disk and its extended corona, both on small and large scales, by means of emission and absorption line features. Moreover, combined with simultaneous RXTE obser- vations (which we have been awarded) we will study the broad band spectrum and variability in great detail and put stringent constraints on the presence of a neutron star in this system. Finally, we will search for large scale jets like those recently found in 4U 1755-33, a source very similar to 4U 1957+11.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2005-11-13T00:00:00Z, 020632, 17.56_20190403_1200. https://doi.org/10.5270/esa-yzavy5e|