Resolving short supersoft source states of optical novae in the core of M31

Details Resolving short supersoft source states of optical novae in the core of M31 Resolving short supersoft source states of optical novae in the core of M31

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008cxo..prop.2709p&link_type=abstract

Chandra proposal ID #10300026

Physics

Scientific paper

We propose to continue our monitoring of the M31 core by 2x20ks Chandra HRC I observations mid and end Feb 2009 to determine the light curves of the short SSS states of optical novae. SSS states with <100 d duration indicate accreting massive white dwarfs (WD). They are proposed as SN Ia progenitors and determining their frequency is very important. The detected sources will be correlated with optical nova positions from monitoring programs covering the same area. With a nova rate in the field of 25/yr and SSS states lasting from weeks to years we will simultaneously follow light curves of many novae. The durations of the nova SSS state will allow us to constrain the envelope and WD masses. We will also monitor time variability of 200 M31 centre X-ray sources (mostly XRBs).

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