Rossi-XTE long-term monitoring of Eta Carinae

Details Rossi-XTE long-term monitoring of Eta Carinae Rossi-XTE long-term monitoring of Eta Carinae

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999nuphs..69...33c&link_type=abstract

Nuclear Physics B Proceedings Supplements, Volume 69, Issue 1-3, p. 33-35.

Physics

Nuclear Physics

Scientific paper

The unstable star η Carinae is arguably the Galaxy's most massive known star or an extremely peculiar massive binary. We report first results of ~weekly RXTE monitoring of η Car during the 1996 Feb - 1997 Jun interval, with daily coverage in 1997 Jun-Jul this represents the most detailed description of the X-ray emission of this or any other massive star. Our RXTE results show a progressive increase in the average 2-10keV flux through the observing interval. Most surprisingly, we find peaks in the X-ray lightcurve which occur every 85+/-1.2 days. We consider possible causes of the X-ray variations.

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