Lyman-alpha Variability During Solar Flares; by Ryan Milligan
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03.12.2020
Co-author
Affiliation
Queen’s University Belfast, UK
Main category
Natural Sciences (Astrophysics and Astrononmy)
Caption
Abstract: The chromospheric hydrogen Lyman-alpha line at 1216A is the brightest emission line in the solar spectrum, and yet studies of solar flares at this wavelength have been scarce in the literature over the past 50 years. The study of Lyman-alpha is important for understanding space weather effects as changes in the Sun’s Lyman-alpha output can drive changes in the dynamics and composition of planetary atmospheres. Lyman-alpha is also a significant radiator of solar flare energy, providing an important diagnostic of energy release and transport processes. Milligan et al. (2020) published a statistical study of ~500 M- and X-class flares using GOES/EUVS data, showing that although the Lyman-alpha irradiance increases by only a few percent during large events, it can radiate up to 100 t
Further information
Link to the European Solar Physics Online Seminars (ESPOS) webpage: https://espos.stream/2020/11/19/Milligan/
Further reading
Language
English
DOI
10.18147/smn.2020/video:285
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