Reference : The XMM-Newton view of the X-ray spectrum of WR140 across periastron passage
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/82965
The XMM-Newton view of the X-ray spectrum of WR140 across periastron passage
English
De Becker, Michaël mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Pittard, Julian M [> > > >]
Williams, Peredur [> > > >]
WR140, Consortium [> > > >]
1-Jan-2011
Bulletin de la Societe Royale des Sciences de Liege
80
653-657
Yes
International
[en] An XMM-Newton campaign dedicated to the study of the X-ray emission of the colliding wind massive binary WR140 across its 2009 periastron passage has been undertaken. The high quality EPIC spectra revealed a strong phase-locked variability both in flux and in spectral shape. The observed variations are consistently explained by the varying emission measure of the emitting plasma along the eccentric orbit, and by the changing absorption column density along the line of sight. Our results are first interpreted in the context of simple multi-temperature thermal emission models, and prospects for more sophisticated modelling are discussed.
Researchers
http://hdl.handle.net/2268/82965
http://cdsads.u-strasbg.fr/abs/2011BSRSL..80..653D

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