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Up and downs of a magnetic oblique rotator viewed at high resolution

Published online by Cambridge University Press:  28 July 2017

Y. Nazé Open the ORCID record for Y. Nazé [Opens in a new window] ,
S. A. Zhekov  and
A. ud-Doula
Y. Nazé
Affiliation:
FNRS/Université de Liège, Belgium email: [email protected]
S. A. Zhekov
Affiliation:
National Astronomical Obsservatory, Bulgaria
A. ud-Doula
Affiliation:
Penn State Worthington Scranton, USA
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Abstract

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In 2006, the Of?p star HD191612 became the second O-star where a magnetic field was discovered. It provided a benchmark to understand the Of?p phenomenon as a whole. Ten years later, an X-ray monitoring performed at high-resolution reveals the behaviour of the hottest magnetospheric plasma: it is located at ~ 2R⊙, hot but not extreme (log(T) ~ 7), producing unshifted lines, and displaying a very repetitive variability. A direct comparison with simulations yields an overall good agreement, with only a few further improvements needed.

Keywords

X-rays: starsstars: individual (HD191612)stars: windsstars: magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S329: The Lives and Death-Throes of Massive Stars , November 2016 , pp. 429
Copyright
Copyright © International Astronomical Union 2017 

References

Nazé, Y., ud-Doula, A., & Zhekov, S. A., 2016, ApJ, 831, 138 Google Scholar