| Proposal ID | 014449 |
| Title | X-ray Study of the Mass Accretion Process in the Fast X-ray Nova, V4641 Sgr |
| Download Data Associated to the proposal | https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0144490101 |
| DOI | https://doi.org/10.5270/esa-952un2n |
| Principal Investigator, PI | Mr Makoto Uemura |
| Abstract | A microquasar, V4641 Sgr is a new class of black hole binaries which experiencedan unprecedented short luminous outburst on 1999 September. This object hasreceived much attention of numerous astronomers since any existing models forordinary X-ray transients apparently fail to explain this outburst. It is furthermore suggested that we have overlooked a number of such fast X-raynovae. Here we propose XMM-Newton observations of V4641 Sgr to determine thequiescent X-ray luminosity. We will compare the observed luminosity with thosepredicted by proposed outburst models to construct a model for the fast X-raynova. XMM-Newton which has the unprecedentedly high sensitivity is the currently unique satellite to measure the expected faint X-ray flux at quiescence. |
| Publications |
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| Instrument | EMOS1, EMOS2, EPN, OM, RGS1, RGS2 |
| Temporal Coverage | 2003-04-12T22:09:05Z/2003-04-13T11:44:22Z |
| 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 | 2004-05-10T00:00:00Z |
| Last Update | 2025-01-27 |
| Keywords | "XMM", "existing models", "1999 september", "xmm newton", "short luminous outburst", "v4641 sgr", "blackhole binary", "XMM-Newton", "faint xray flux", "x ray", "outburst models", "fast xray nova", "quiescent xray luminosity", "numerous astronomers", "mass accretion process" |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, Mr Makoto Uemura, 2004, 'X-ray Study of the Mass Accretion Process in the Fast X-ray Nova, V4641 Sgr', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-952un2n |