Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20910103s&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #101.03; Bulletin of the American Astronomical Society,
Astronomy and Astrophysics
Astronomy
Scientific paper
With the recent detection of large scale magnetic fields on several O and B stars, the anomalous X-ray emission detected from a subset of hot stars, and advances in numerical modeling, there is increasing interest in the role magnetic fields play in hot stars. We present synthesized diagnostics of magnetic hot stars, derived from state-of-the-art numerical simulations of both slowly rotating O stars with strong winds (e.g. theta1 Ori C) and rapidly rotating B stars with weaker winds and stronger fields (e.g. sigma Ori E). The numerical simulations include 2-D ZEUS MHD simulations, as well as rigidly-rotating magnetosphere (RRM) simulations of the more magnetically dominated winds of early B stars. We present results on rotationally modulated H-alpha emission, as well as x-ray emission arising from magnetically channeled wind shocks and centrifugally driven magnetospheric breakout with the associated magnetic reconnection.
Cohen David H.
Owocki Stanley P.
Townsend R. H.
ud-Doula Asif
Vincent Stephen St.
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