A broad, intense and skewed iron K \alpha fluorescent emission linewas detected in the April 19, 1998 {\it BeppoSAX} observation of the{\it microquasar} GRS 1915+105, in a state of less pronounced variability,providing for the first time evidence for relativisticdisc line emission in this source. The limited sensitivity and energyresolution of {\it BeppoSAX} did not allow, however, to measure thedisc parameters with the desired precision. We request a 25 ks XMM-- Newton TOO observation, triggered by the occurrence of a similar..plateau. state, to measure the disc parameters and estimate theBlack Hole spin.
Instrument
EMOS1, EMOS2, EPN, RGS1, RGS2
Temporal Coverage
2004-04-17T14:18:56Z/2004-04-21T19:50:34Z
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 Andrea Martocchia, 2005, 'Measuring the spin of the Black Hole in GRS 1915+105 with the iron line', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-8j30dd0
