Reference : New INTEGRAL Observations of η Carinae Close to Periastron
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Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
New INTEGRAL Observations of η Carinae Close to Periastron
Leyder, J.-C. [> >]
Walter, R. [> >]
Rauw, Grégor mailto [Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Sciences spatiales >]
Astronomical Society of the Pacific Conference Series
Four Decades of Research on massive Stars
11-15 July 2011
[en] The soft X-ray thermal emission of η Carinae varies strongly around the periastron, following the orbital period of 5.5 yr. We studied the hard X-ray non-thermal emission of η Car using new INTEGRAL observations taken close to periastron. We showed that the hard X-ray emission is very likely to be associated with η Car, and not with any other source found within the INTEGRAL error circle. We also showed that the 3-σ detection during the soft X-ray minimum is consistent with a hydrogen column density that does not exceed 6×10[SUP]23[/SUP] cm[SUP]-2[/SUP].

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