XMM-Newton observations of WR140 through periastron passage

Details XMM-Newton observations of WR140 through periastron passage XMM-Newton observations of WR140 through periastron passage

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007xmm..prop..166d&link_type=abstract

XMM-Newton Proposal ID #05554701

Astronomy and Astrophysics

Astronomy

Stars, White Dwarfs, Solar System, Wr140, Xmm-Newton Proposal Id #05554701

Scientific paper

WR is the archetypal long period WR+O colliding wind binary (CWB) system, where the wind from the WR star collides with the wind of its massive companion. Its X-ray brightness, giant IR outbursts, and distinctive non-thermal radio lightcurve are all attributed to the wind-wind collision region (WCR), the properties of which dramatically change due to the exceptionally high orbital eccentricity (e > 0.88). XMM-Newton observations through periastron passage will provide data to determine the key parameters of this system and the physical processes occuring at the WCR. Detailed modelling of the 3D hydrodynamics and the emission and absorption processes occuring within the WCR and stellar wind envelopes, and spanning the radio to TeV domains, will underpin our data analysis.

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