A dataset provided by the European Space Agency

Name 074196
Title Understanding accretion beyond the Eddington limit: NGC 5204 X-1


DOI https://doi.org/10.5270/esa-0jroo5w
Author Dr Andrew Sutton
Description It has been suggested that ULXs are in a new super-Eddington .ultraluminous. accretion state, and that they progress through a sequence of three spectral regimes with increasing accretion rate. However, our recent results (Sutton et al. 2013) indicate that inclination is also critical in determining the observed X-ray properties. These properties can broadly be explained by a massive radiatively-driven wind that emerges as the Eddington limit is exceeded, and forms a funnel around the black hole axis. Previous observations show NGC 5204 X-1 straddling the boundary between two ultraluminous regimes, marking it as a critical source in testing this scenario. Here we propose to obtain a further four 20 ks XMM-Newton EPIC observations, which will allow us to probe the validity of the proposed model.
Publication No observations found associated with the current proposal
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2014-06-27T22:50:50Z/2014-06-28T05:35:50Z
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 2015-07-17T22:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2015-07-17T22:00:00Z, 074196, 17.56_20190403_1200. https://doi.org/10.5270/esa-0jroo5w