Turn-off of and recovery of accretion in recent galactic novae

Details Turn-off of and recovery of accretion in recent galactic novae Turn-off of and recovery of accretion in recent galactic novae

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008xmm..prop..137h&link_type=abstract

XMM-Newton Proposal ID #06049502

Physics

White Dwarf Binaries, Neutron Star Binaries, Cataclysmic Variables, Ulxs, Black Holes, V2362 Cyg (2006, V5116 Sgr (2005

Scientific paper

Detection of X-rays from post-outburst classical novae provides unique and crucial information about the explosion mechanism and accretion recovery. Soft X-rays reveal if H-nuclear burning is still on, whereas harder X-rays give information about the ejecta and/or the accretion flow in the reborn cataclysmic variable. We have detected three interesting novae with XMM in AO6: V5116 Sgr 2005 and V5115 Sgr 2005, which were still in the supersoft X-ray phase -with V5116 Sgr displaying a puzzling temporal varibility- and V2362 Cyg, which had already turned-off (but the short effective exposure -due to high radiation- prevented us to disentangle the origin of the emission). We propose new observations of these novae, as the best way to better understand the turnoff and recovery of accretion in novae.

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