A dataset provided by the European Space Agency

Name 067392
Title Tracking spectral variability with luminosity in the ultraluminous state


DOI 10.5270/esa-bt9v4qe
Author Mr Andrew D. Sutton
Description A substantial body of evidence suggests that most ultraluminous X-ray sources (ULXs) are stellar remnant black holes accreting at super-Eddington rates, in a new 'ultraluminous. accretion state. Little is known of the astrophysics of this putative state to date. Gladstone et al. (2009) propose a sequence of three spectral regimes that ULXs may progress through as their accretion rate increases; but no evidence for this progression from an individual source has yet been seen. Here, we propose three observations of a highly variable ULX in NGC 5907, triggered at different flux levels by Swift monitoring data. These will investigate whether large amplitude luminosity variation in a ULX is accompanied by transitions through these ultraluminous state regimes.
Publication The ultraluminous state revisited: fractional variability and spectral shape as diagnostics of super-Eddington accretion . Sutton, Andrew D., Roberts, Timothy P., . MNRAS . 435-1758 . 2013 . 2013MNRAS.435.1758S ,
A bright ultraluminous X-ray source in NGC 5907 . Sutton, Andrew D., Roberts, Timothy P., et all. . MNRAS . 434-1702 . 2013 . 2013MNRAS.434.1702S ,
Serendipitous UV source catalogues for 10 years of XMM and 5 years of Swift . Yershov, V. N., . Ap&SS . 354-97 . 2014 . 2014Ap&SS.354...97Y ,
Non-detection of X-ray emission from sterile neutrinos in stacked galaxy spectra . Anderson, Michael E., Churazov, Eugene, . MNRAS . 452-3905 . 2015 . 2015MNRAS.452.3905A ,
XMM-Newton publication statistics . Ness, J.-U., Parmar, A. N., et all. . AN . 335-210 . 2014 . 2014AN....335..210N ,
Ensemble X-ray variability of active galactic nuclei. II. Excess variance and updated structure function . Vagnetti, F., Middei, R., et all. . A&A . 593-55 . 2016 . 2016A&A...593A..55V ,
The Million Optical - Radio-X-ray Associations (MORX) Catalogue . Flesch, Eric W., . PASA . 33-52 . 2016 . 2016PASA...33...52F ,
Spectral Changes in the Hyperluminous Pulsar in NGC 5907 as a Function of Super-orbital Phase . Furst, F., Walton, D. J., et all. . ApJ . 834-77 . 2017 . 2017ApJ...834...77F ,
AGN spectral states fr...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2012-02-05T11:51:32Z/2012-02-09T18:52:10Z
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 2013-03-02T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-03-02T00:00:00Z, 067392, 17.56_20190403_1200. https://doi.org/10.5270/esa-bt9v4qe