Exploring Flaring Behaviour on Low Mass Stars, Solar-type Stars and the Sun

We report on our project to study the activity in both the Sun and low mass stars. Utilising high cadence, Hα observations of a filament eruption made using the CRISP spectropolarimeter mounted on the Swedish Solar Telescope has allowed us to determine 3D velocity maps of the event. To gain insight...

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Bibliographic Details
Published in:Proceedings of the International Astronomical Union 2019-06, Vol.15 (S354), p.384-391
Main Authors: Doyle, L., Ramsay, G., Doyle, J. G., Wyper, P. F., Scullion, E., Wu, K., McLaughlin, J. A.
Format: Article
Language:English
Subjects:
Astronomy
Contributed Papers
Low mass stars
Magnetic fields
Observatories
Physics
Solar flares
Solar physics
Stars
Stellar flares
Sun
Three dimensional models
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Summary:We report on our project to study the activity in both the Sun and low mass stars. Utilising high cadence, Hα observations of a filament eruption made using the CRISP spectropolarimeter mounted on the Swedish Solar Telescope has allowed us to determine 3D velocity maps of the event. To gain insight into the physical mechanism which drives the event we have qualitatively compared our observation to a 3D MHD reconnection model. Solar-type and low mass stars can be highly active producing flares with energies exceeding erg. Using K2 and TESS data we find no correlation between the number of flares and the rotation phase which is surprising. Our solar flare model can be used to aid our understanding of the origin of flares in other stars. By scaling up our solar model to replicate observed stellar flare energies, we investigate the conditions needed for such high energy flares.
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921319009980