A dataset provided by the European Space Agency

Proposal ID 074098
Title Black hole transient during transition from hard to soft state
Download Data Associated to the proposal

https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0740980201

DOI https://doi.org/10.5270/esa-y4igl8o
Principal Investigator, PI Dr Holger Stiele
Abstract We propose a ToO observation of a transient black-hole candidate, either knownor unknown, during its transition from hard to soft state. This transition,which takes place at high flux levels, encompasses marked changes in theproperties of the accretion flow and it includes the time at which the ejectionof an accelerating relativistic jet stops abruptly. The study of the softspectral component as well as the behaviour of the iron line is important forour understanding of the accretion disc during state transition. We would liketo investigate in particular the process responsible for the disappearance ofthe variability in the soft energy band, which has been detected in the hardstate with XMM-Newton, but is absent in the soft state.
Publications
Instrument EPN, OM, RGS1, RGS2
Temporal Coverage 2014-09-24T18:02:31Z/2014-09-25T08:37:31Z
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 2015-10-22T22:00:00Z
Keywords "transient blackhole candidate", "black hole transient", "XMM", "soft spectral component", "iron line", "accretion disc", "soft energy band", "flux levels", "accretion flow", "XMM-Newton", "encompasses marked", "xmm newton"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Holger Stiele, 2015, 'Black hole transient during transition from hard to soft state', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-y4igl8o