Physics of Flares in the Lower Solar Atmosphere

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A RAS Specialist Discussion Meeting organised by:


Dr Iain Hannah (University of Glasgow) and Dr Ryan Milligan (Queens University Belfast)


Abstract: Solar flares are impulsive releases of energy in the Sun’s corona and yet it is emission from the lower atmosphere (the photosphere and chromosphere) that contains the bulk of the energy. This radiation also provides some of the best diagnostics of the flaring process. The availability of optical, UV/EUV and hard X-ray observations, made with the current fleet of space-based (SDO, Hinode, RHESSI, etc.) and ground-based (ROSA, IBIS, Big Bear, etc.) observatories, combined with recent developments in flare modelling, presents a timely opportunity to study the cause and effect of energy deposition in the lower solar atmosphere. The combination of multi-wavelength observations with advanced numerical simulations can provide key insights into the processes of particle acceleration, plasma heating, energy transport, and wave propagation.


This meeting will focus on work investigating the response of the solar and stellar atmospheres during a flare’s impulsive phase and we welcome contributions from both observation and theory.


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