A detailed X-ray study of the longest-lived nova in outburst comma V723 Cas

Just two days after the 15th anniversary of the classical nova V723Cas, a 55ksobservation was obtained with XMM in order to study spectral variations throughone full orbit. Unfortunately, the last 8ks of the proposed 63ks fell prey toflare activity, and we lost the most r^ant phase range 0.91.1. These dataindicate that the Xray light curve may follow the same orbital cycle as the OMlight curve, but for secure conclusions, the phase minimum needs to be coveredand a second cycle is needed. Preliminary analysis of the data show intriguingfeatures in the RGS (e.g., blueshifted absorption lines) and some weak hardemission in the EPIC. A second full orbit (59.9ks) covered in Xrays yieldsdeeper spectra and more light curve coverage for timing analyses. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]