A dataset provided by the European Space Agency

Name 015141
Title The Nature of the Luminous Supersoft X-ray Sources


DOI 10.5270/esa-5uf63pe
Author Dr Katherine McGowan
Description The highly luminous (>=10e37 erg-s) supersoft X-ray sources (SSS) are believed to be super-Eddington limited accreting white dwarfs undergoing surface hydrogen burning. The current paradigm for SSS (van den Heuvel et al. 1992) involves thermally unstable mass transfer from a 1-2 Msun companion. But this model has never been directly confirmed and yet is crucial for the evolution of cataclys- mic variables in general, and for the establishment of SSS as progenitors of type Ia supernovae in particular. The key SSS is RXJ0513.9-6951 which has recurrent X-ray outbursts every 100-150d (lasting ~30d) during which the optical declines by 1 mag. We request TOO status to be triggered by optical monitoring so as to follow directly the predicted expansion of the white dwarf photosphere.
Publication The XMM-Newton serendipitous survey. V. The Second XMM-Newton serendipitous source catalogue . Watson, M. G., Schroder, A. C., et all. . A&A . 493-339 . 2009 . 2009A&A...493..339W ,
Quasi-stellar Object Selection Algorithm Using Time Variability and Machine Learning: Selection of 1620 Quasi-stellar Object Candidates from MACHO Large Magellanic Cloud Database . Kim, Dae-Won, Protopapas, Pavlos, et all. . ApJ . 735-68 . 2011 . 2011ApJ...735...68K ,
Statistical evaluation of the flux cross-calibration of the XMM-Newton EPIC cameras . Mateos, S., Saxton, R. D., et all. . A&A . 496-879 . 2009 . 2009A&A...496..879M ,
A Refined QSO Selection Method Using Diagnostics Tests: 663 QSO Candidates in the Large Magellanic Cloud . Kim, Dae-Won, Protopapas, Pavlos, et all. . ApJ . 747-107 . 2012 . 2012ApJ...747..107K ,
The XMM Cluster Survey: optical analysis methodology and the first data release . Mehrtens, Nicola, Romer, A. Kathy, et all. . MNRAS . 423-1024 . 2012 . 2012MNRAS.423.1024M ,
XMM spectroscopy of the transient supersoft source RXJ0513.9 - 6951: probing the dynamic white dwarf photosphere . McGowan, K. E., Charles, P. A., et all. . MNRAS . 364-462 . 2005 . 2005MNRAS.364..462M ,
An All-Sky Atlas of Radio-X-ray Associations . Flesch, E., . PASA . 27-283 . 2010 . 2010PASA...27..283F ,
The XMM Cluster Survey: X-ray analysis methodology . Lloyd-Davies, E. J., Romer, A. ...
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2004-04-28T17:52:12Z/2004-05-28T10:58:24Z
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 2005-06-18T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2005-06-18T00:00:00Z, 015141, 17.56_20190403_1200. https://doi.org/10.5270/esa-5uf63pe