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The shape of M dwarf flares in Kepler light curves

Published online by Cambridge University Press:  09 September 2016

James R. A. Davenport
James R. A. Davenport*
Affiliation:
NSF Astronomy and Astrophysics Postdoctoral Fellow, Department of Physics & Astronomy, Western Washington University, Bellingham, WA 98225 email: James.Davenport@wwu.edu Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195
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Abstract

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Ultra-precise light curves from Kepler provide the best opportunity to determine rates and statistical properties of stellar flares. From 11 months of data on the active M4 dwarf, GJ 1243, we have built the largest catalog of flares for a single star: over 6100 events. Combining 885 of our most pristine flares, we generated an empirical white-light flare template. This high-fidelity template shows a rapid initial rise, and two distinct exponential cooling phases. This template is useful in constraining flare energies and for improved flare detection in many surveys. Complex, multi-peaked events are more common for higher energy flares in this sample. Using our flare template we characterize the structure of complex events. In this contributed talk, I presented results from our boutique study of GJ 1243, and described an expanded investigation of the structure of complex flares and their connection to solar events.

Keywords

StarsFlares
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. 128 - 133
Copyright
Copyright © International Astronomical Union 2016 

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