The X-ray properties of magnetic massive stars

Yaël Nazé, Véronique Petit, Melanie Rinbrand, David Cohen, Stan Owocki, Asif Ud-Doula, Gregg Wade

Research output: Contribution to journalArticle

Abstract

Early-type stars are well-known to be sources of soft X-rays. However, this high-energy emission can be supplemented by bright and hard X-rays when magnetically confined winds are present. In an attempt to clarify the systematics of the observed X-ray properties of this phenomenon, a large series of Chandra and XMM observations was analyzed, over 100 exposures of 60% of the known magnetic massive stars listed recently by Petit et al. (2013). It is found that the X-ray luminosity is strongly correlated with mass-loss rate, in agreement with predictions of magnetically confined wind models, though the predictions of higher temperature are not always verified. We also investigated the behaviour of other X-ray properties (absorption, variability), yielding additional constraints on models. This work not only advances our knowledge of the X-ray emission of massive stars, but also suggests new observational and theoretical avenues to further explore magnetically confined winds.

Original languageEnglish (US)
Pages (from-to)437-442
Number of pages6
JournalProceedings of the International Astronomical Union
Volume9
DOIs
StatePublished - Jan 1 2014

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magnetic stars
massive stars
x rays
XMM-Newton telescope
prediction
predictions
luminosity
stars
energy

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Nazé, Yaël ; Petit, Véronique ; Rinbrand, Melanie ; Cohen, David ; Owocki, Stan ; Ud-Doula, Asif ; Wade, Gregg. / The X-ray properties of magnetic massive stars. In: Proceedings of the International Astronomical Union. 2014 ; Vol. 9. pp. 437-442.
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The X-ray properties of magnetic massive stars. / Nazé, Yaël; Petit, Véronique; Rinbrand, Melanie; Cohen, David; Owocki, Stan; Ud-Doula, Asif; Wade, Gregg.

In: Proceedings of the International Astronomical Union, Vol. 9, 01.01.2014, p. 437-442.

Research output: Contribution to journalArticle

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