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Title:
Modeling The RXTE Light Curve of Eta Carinae and WR140
Authors:
Russell, Christopher M. P.; Corcoran, M. F.; Owocki, S. P.; Okazaki, A. T.; Madura, T. I.
Affiliation:
AA(University of Delaware), AB(NASA/GSFC), AC(University of Delaware), AD(Hokkai-Gakuen Univeristy, Japan), AE(University of Delaware)
Publication:
American Astronomical Society, AAS Meeting #213, #408.01; Bulletin of the American Astronomical Society, Vol. 41, p.205
Publication Date:
01/2009
Origin:
AAS
Bibliographic Code:
2009AAS...21340801R

Abstract

Colliding Wind Binaries (CWBs) are a key mechanism for X-ray production in young clusters and star-forming regions, such as the Orion and Carina Nebulae. Their extremely fast winds slam together to produce hard X-rays, allowing a direct diagnostic of the CWB's wind parameters and hence the evolutionary state of the stars. The Rossi X-ray Timing Explorer (RXTE) has been regularly monitoring the 2-10keV X-rays of Eta Carinae and WR140, two massive-star CWBs with highly eccentric orbits. Using 3D Smoothed Particle Hydrodynamics (SPH) simulations to model the interaction of these winds, along with a simple model for the X-ray emission and absorption, we have been able to reproduce the RXTE light curves of both systems very well.
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