The short-period recurrent nova T Pyx; a wind-driven supersoft sourcequestionMark

The recurrent nova T Pyx is an intriguing accreting binary because of itsprolific outburst behaviour, large quiescent luminosity, short orbital periodand rapid orbital period evolution. An unusually high massaccretion rate isimplied and it has even been proposed continuous nuclear burning may occur onthe accreting white dwarf. Systems with a massive white dwarf accreting at highrates are potential Type Ia progenitors. Our proposed XMM observations willestablish if a winddriven supersoft source scenario is indeed at play in T Pyx,or whether its Xray luminosity demands an alternative evolutionaryinterpretation. These observations will thus have important implications fornovae, supersoft sources and cataclysmic variable evolution. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]