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The frequency of stellar X-ray flares from a large-scale XMM-Newton sample

Published online by Cambridge University Press:  09 September 2016

John P. Pye  and
Simon R. Rosen
John P. Pye
Affiliation:
University of Leicester, Dept. of Physics & Astronomy, Leicester, LE1 7RH, U.K. email: [email protected]; [email protected]
Simon R. Rosen
Affiliation:
University of Leicester, Dept. of Physics & Astronomy, Leicester, LE1 7RH, U.K. email: [email protected]; [email protected]
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Abstract

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We present estimates of cool-star X-ray flare rates determined from the XMM-Tycho survey (Pye et al. 2015, A&A, 581, A28), and compare them with previously published values for the Sun and for other stellar EUV and white-light samples. We demonstrate the importance of applying appropriate corrections, especially in regard to the total, effective size of the stellar sample. Our results are broadly consistent with rates reported in the literature for Kepler white-light flares from solar-type stars, and with extrapolations of solar flare rates, indicating the potential of stellar X-ray flare observations to address issues such as ‘space weather’ in exoplanetary systems and our own solar system.

Keywords

X-rays: stars - stars: flare - stars: activity - stars: coronae - surveys - catalogs
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S320: Solar and Stellar Flares and their Effects on Planets , August 2015 , pp. 134 - 137
Copyright
Copyright © International Astronomical Union 2016 

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