A dataset provided by the European Space Agency

Proposal ID 011115
Title X-ray spectroscopic study of supersoft sources SSC_21
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https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0111150101
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0111150201
https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0111150301
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DOI https://doi.org/10.5270/esa-78hhnpa
Principal Investigator, PI Dr Michael Watson
Abstract GT- Luminous supersoft X-ray sources are characterized by soft spectra and highbolometric luminosities of the order of 10^37 erg/s. We propose to observe oneof the brightest of the more than 30 known sources. EPIC and/or RGS X-rayspectra will allow us to derive essential information on the origin of theX-ray emission and thus to distinguish between white dwarf (WD) and neutronstar models. In the case of a WD origin, the modelling of the spectra willprovide measures of the temperature, gravity and abundances which in turnallows to estimate mass accretion rates, WD masses and possibly information onits C+O or O+Ne+Mg composition. This will enable us to test the most popularversion of the WD models, namely the close-binary supersoft source model.
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2000-12-16T11:06:35Z/2000-12-19T05:08:08Z
Version PPS_NOT_AVAILABLE
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 2002-03-29T00:00:00Z
Keywords "mass accretion rates", "wd masses", "neutron star models", "EPIC", "supersoft sources ssc_21", "mg composition", "wd models", "popular version", "soft spectra", "wd origin", "bolometric luminosities", "white dwarf wd", "xray emission", "x ray spectroscopic", "rgs xray spectra"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Michael Watson, 2002, 'X-ray spectroscopic study of supersoft sources SSC_21', PPS_NOT_AVAILABLE, European Space Agency, https://doi.org/10.5270/esa-78hhnpa