X-rays: stars; stars: individual (HD191612); stars: winds; stars: magnetic fields
Abstract :
[en] 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 [SUB]⊙[/SUB], 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.
Research Center/Unit :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Nazé, Yaël ; Université de Liège - ULiège > Groupe d'astrophysique des hautes énergies (GAPHE)
Zhekov, S. A.; National Astronomical Obsservatory, Bulgaria
Ud-Doula, A.; Penn State Worthington Scranton, USA)
Language :
English
Title :
Up and downs of a magnetic oblique rotator viewed at high resolution
Publication date :
01 November 2017
Event name :
IAU Symposium 329, The Lives and Death-Throes of Massive Stars
Event date :
from 28-11-2016 to 2-12-2016
Audience :
International
Journal title :
Proceedings of the International Astronomical Union
ISSN :
1743-9213
eISSN :
1743-9221
Publisher :
Cambridge University Press, Cambridge, United Kingdom
