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Radio spectroscopy of stellar flares: magnetic reconnection & CME shocks in stellar coronae

Published online by Cambridge University Press:  09 September 2016

Jackie Villadsen ,
Gregg Hallinan  and
Stephen Bourke
Jackie Villadsen
Affiliation:
Department of Astronomy, California Institute of Technology, MC 249-17, 1200 E California Blvd, Pasadena, CA 91125, USA email: jrv@astro.caltech.edu, gh@astro.caltech.edu, sb@astro.caltech.edu
Gregg Hallinan
Affiliation:
Department of Astronomy, California Institute of Technology, MC 249-17, 1200 E California Blvd, Pasadena, CA 91125, USA email: jrv@astro.caltech.edu, gh@astro.caltech.edu, sb@astro.caltech.edu
Stephen Bourke
Affiliation:
Department of Astronomy, California Institute of Technology, MC 249-17, 1200 E California Blvd, Pasadena, CA 91125, USA email: jrv@astro.caltech.edu, gh@astro.caltech.edu, sb@astro.caltech.edu
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Abstract

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High-cadence spectroscopy of solar and stellar coherent radio bursts is a powerful diagnostic tool to study coronal conditions during magnetic reconnection in flares and to detect coronal mass ejections (CMEs). We present results from wide-bandwidth VLA observations of nearby active M dwarfs, including some observations with simultaneous VLBA imaging. We also discuss the Starburst program, which will make wide-bandwidth radio spectroscopic observations of nearby active flare stars for 20+ hours a day for multiple years, coming online in spring 2016 at the Owens Valley Radio Observatory. This program should vastly increase the diversity of observed stellar radio bursts and our understanding of their origins, and offers the potential to detect a population of CME-associated radio bursts.

Keywords

stars: coronaestars: flarestars: individual (UV Ceti)stars: mass lossSun: coronal mass ejections (CMEs)Sun: radio radiationradio continuum: stars
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. 191 - 195
Copyright
Copyright © International Astronomical Union 2016 

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