<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Henze, M.</style></author><author><style face="normal" font="default" size="100%">Pietsch, W.</style></author><author><style face="normal" font="default" size="100%">Haberl, F.</style></author><author><style face="normal" font="default" size="100%">Hernanz, M.</style></author><author><style face="normal" font="default" size="100%">Sala, G.</style></author><author><style face="normal" font="default" size="100%">Hatzidimitriou, D.</style></author><author><style face="normal" font="default" size="100%">Della Valle, M.</style></author><author><style face="normal" font="default" size="100%">Rau, A.</style></author><author><style face="normal" font="default" size="100%">Hartmann, D. H.</style></author><author><style face="normal" font="default" size="100%">Burwitz, V.</style></author><author><style face="normal" font="default" size="100%">Greiner, J.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">X-ray monitoring of Classical Novae in the central region of M 31</style></title><short-title><style face="normal" font="default" size="100%">Memorie della Societa Astronomica Italiana</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">CATACLYSMIC VARIABLES</style></keyword><keyword><style  face="normal" font="default" size="100%">Galaxies: individual: {M 31}</style></keyword><keyword><style  face="normal" font="default" size="100%">Novae</style></keyword><keyword><style  face="normal" font="default" size="100%">X-rays: binaries</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2012/01/1</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://ui.adsabs.harvard.edu/abs/2012MmSAI..83..798H</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">83</style></volume><pages><style face="normal" font="default" size="100%">798</style></pages><isbn><style face="normal" font="default" size="100%">0037-8720</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">We review recent results of the first dedicated monitoring programme for supersoft X-ray source (SSS) states of classical novae (CNe) in the central region of the Andromeda galaxy ({M 31}), performed in high-cadence campaigns with {XMM-Newton } and Chandra. After the first three years we had detected 21 novae in X-rays (17 new), thereby discovering peculiar objects and increasing the number of known {M 31} novae with SSS state to 60. This is the largest sample known in any galaxy and we used it to carry out the first statistical analysis of novae in X-rays. We found several correlations between optical and SSS parameters, and carried out a simulation on the completeness of our monitoring as well as the first nova population study in X-rays. This shows that X-ray surveys of CNe populations are a powerful tool to address the open questions connected to these objects.</style></abstract></record></records></xml>