Abstract :
[en] ξ[SUP]1[/SUP] CMa is a rare β Cep star with a strong magnetic field. To gain new insight on this object, a dedicated campaign using XMM-Newton was performed. These data reveal a new type of variations, X-ray pulsations, posing a new challenge to our understanding of stellar winds.
Event name :
IAU, symposium 307 (New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry, Geneva)
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