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Proposal ID 050572
Title Resolving short supersoft source states of optical novae in the core of M31
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DOI https://doi.org/10.5270/esa-ih5xt4s
Principal Investigator, PI Dr Wolfgang Pietsch
Abstract We propose to monitor the M31 core with five 23ks XMM-Newton EPIC and five 20ksChandra HRC-I observations equally distributed from Nov 2007 to mid Feb 2008 todetermine the light curves for short supersoft source (SSS) states of opticalnovae. SSS states with <100 d duration indicate accreting massive white dwarfs.They are proposed as SN Ia progenitors and determining their frequency is veryimportant. We will correlate detected sources with novae from optical monitoringof the same area. With a nova rate in the field of ~25/yr and SSS states lastingfrom weeks to years we will follow light curves of many novae. Durations of thenova SSS state will allow us to constrain envelope and whitedwarf masses. Wewill also monitor time variability of ~200 M31 centre X-ray sources (mostly XRBs).
Publications
Instrument EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage 2007-12-29T13:18:27Z/2008-02-07T10:37:50Z
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 2009-03-11T00:00:00Z
Last Update 2025-01-27
Keywords "mid feb 2008", "nova rate", "equally distributed", "light curves", "optical novae", "EPIC", "xmm newton epic", "assupernovaia progenitors", "XMM-Newton", "time variability", "nov 2007", "M31", "constrain envelope", "whitedwarf masses", "nova sss", "m31 core", "XMM", "chandra hrc", "short supersoft source"
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, Dr Wolfgang Pietsch, 2009, 'Resolving short supersoft source states of optical novae in the core of M31', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-ih5xt4s