| Proposal ID | 014409 |
| Title | Measuring the spin of the Black Hole in GRS 1915+105 with the iron line |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0144090101 |
| DOI | https://doi.org/10.5270/esa-8j30dd0 |
| Principal Investigator, PI | Dr Andrea Martocchia |
| Abstract | 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 similarplateau state, to measure the disc parameters and estimate theBlack Hole spin. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, RGS1, RGS2 |
| Temporal Coverage | 2004-04-17T14:18:56Z/2004-04-21T19:50:34Z |
| Version | 21.51_20241115_1113 |
| 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2005-06-13T00:00:00Z |
| Last Update | 2026-07-09 |
| Keywords | "BeppoSAX", "desired precision", "fluorescent emission line", "pronounced variability", "1998 {\", "XMM", "skewed iron", "$\ alpha", "time evidence", "limited sensitivity", "disc parameters", "grs 1915", "blackhole spin", "`` plateau ''", "energy resolution", "iron line" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Andrea Martocchia, 2005, 'Measuring the spin of the Black Hole in GRS 1915+105 with the iron line', 21.51_20241115_1113, European Space Agency, https://doi.org/10.5270/esa-8j30dd0 |
| Rights | Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license. |