| Proposal ID | 008529 |
| Title | ON THE ORIGIN OF THE DIPS IN 4U1915-05 |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0085290301 |
| DOI | https://doi.org/10.5270/esa-du6fyic |
| Principal Investigator, PI | Dr Didier Barret |
| Abstract | We propose to study one of the most enigmatic LMXBs in the Galaxy: the 50-min binary dipper and type I X-ray burster 4U1915-05. First, we wish to test the two models (progressive covering versusabsorbed+non-absorbed) proposed to explain the dip behaviour of 4U1915-05, and hence derive constraints on the structure/nature of the absorber. Second, asa follow-up of our extensive RXTE/PCA observing program, we wish to performspectroscopic studies of the short term variability (including X-ray bursts)in the dips. Third, we wish to use the simultaneous optical coverage toconstrain the system clocks and emission regions. These observations which probe directly the inner and outer disk structure will significantly improve our understanding of the accretion process in X-ray binaries. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2002-09-25T03:55:38Z/2002-09-25T08:31:19Z |
| 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. |
| Creator Contact | https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk |
| Date Published | 2003-10-29T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "accretion process", "perform spectroscopic", "xray bursts", "xray binary", "short term variability", "4u1915 05", "extensive rxte", "outer disk structure", "binary dipper", "optical coverage", "emission region", "enigmatic lmxbs", "models progressive", "system cloc" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Dr Didier Barret, 2003, 'ON THE ORIGIN OF THE DIPS IN 4U1915-05', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-du6fyic |