Resolving short supersoft source states

Details Resolving short supersoft source states Resolving short supersoft source states

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cxo..prop.2932p&link_type=abstract

Chandra proposal ID #11300022

Physics

Scientific paper

We propose to extend our monitoring of the M31 core by two 20 ks Chandra HRC-I observations to determine light curves of the short SSS states of optical novae. SSS states with <100 d duration indicate accreting massive white dwarfs. 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 duration of nova SSS states will allow us to constrain envelope and white dwarf masses. At the same time we will monitor time variability of ~200 X-ray sources (mostly XRBs) in the central area of M31.

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