A dataset provided by the European Space Agency

Name 014449
Title X-ray Study of the Mass Accretion Process in the Fast X-ray Nova, V4641 Sgr


DOI https://doi.org/10.5270/esa-952un2n
Author Mr Makoto Uemura
Description A microquasar, V4641 Sgr is a new class of black hole binaries which experienced an unprecedented short luminous outburst on 1999 September. This object has received much attention of numerous astronomers since any existing models for ordinary X-ray transients apparently fail to explain this outburst. It is furthermore suggested that we have overlooked a number of such "fast X-ray novae". Here we propose XMM-Newton observations of V4641 Sgr to determine the quiescent X-ray luminosity. We will compare the observed luminosity with those predicted by proposed outburst models to construct a model for the fast X-ray nova. XMM-Newton which has the unprecedentedly high sensitivity is the currently unique satellite to measure the expected faint X-ray flux at quiescence.
Publication No observations found associated with the current proposal
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 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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2004-05-10T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2004-05-10T00:00:00Z, 014449, 17.56_20190403_1200. https://doi.org/10.5270/esa-952un2n