Discovery of X-ray flaring on the magnetic Bp-star σ Ori E

2004/02/18 by D. Groote, J. H. M. M. Schmitt · 40 citations
Physics and Astronomy · #Astrophysical Phenomena and Observations #Connection (principal bundle) #Context (archaeology) #Flare #Flare star #Magnetic reconnection #Pulsars and Gravitational Waves Research #ROSAT #Solar flare #Stars #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1051/0004-6361:20034300

published in Astronomy and Astrophysics 418(1), 235-242 (EDP Sciences) · 8 pages, 4 figures, accepted by A&A

arxiv created 2004/02/18 · openalex publication_date 2004/04/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We report the detection of an X-ray flare on the Bp star σ Ori E with the ROSAT high resolution imager (HRI). The flare is shown to have likely occurred on the early-type star, rather than on an hypothesized late-type companion. We derive flare parameters such as total energy release, coarse estimates of size and density, and also present arguments for a magnetic origin of the flare. We place our observations in the context of a magnetic character of Bp-type stars and speculate on a common physical basis and connection between Bp and Be stars.

Citations

• Continuous heating of a giant X-ray flare on Algol
• Wind circulation in selected rotating magnetic early-B stars

Cited by

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