The X-ray light curve of Eta Carinae

Details The X-ray light curve of Eta Carinae The X-ray light curve of Eta Carinae

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.299l...5p&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 299, Issue 1, pp. L5-l9.

Astronomy and Astrophysics

Astronomy

54

Hydrodynamics, Binaries: General, Stars: Early-Type, Stars: Individual: Eta Car, X-Rays: Stars

Scientific paper

Following the proposal by Damineli that the central object of Eta Carinae may be an early-type binary, we perform numerical simulations of the X-ray emission from colliding stellar winds. A synthetic light curve has been generated which qualitatively agrees with the recent X-ray variability, and provides further support for the binary model. In particular, the model predicts a rise in the observed X-ray emission towards periastron, followed by a sharp drop and subsequent recovery. This is indeed what is seen in the RXTE light curve, although some problems concerning the X-ray spectrum at periastron still need to be explained. The simulations suggest that the width of the periastron dip will provide strong constraints on the binary and stellar wind properties of the components of Eta Car.

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