Session Details - ST20


Session Details
Section ST - Solar & Terrestrial Sciences
Session Title Sources of Solar Magnetism: From the Deep Interior to the Upper Atmosphere
Main Convener Prof. S. Sirajul Hasan (Indian Institute of Astrophysics, India)
Co-convener(s) Prof. Robertus Erdelyi (Sheffield University, United Kingdom)
Dr. Paul Cally (Monash University, Australia)
Prof. Kazunari Shibata (Kyoto University, Japan)
Session Description The dynamic coupling throughout the solar atmosphere from the deep interior to the upper atmosphere is a fundamental and challenging problem in solar physics. High-resolution observations of the solar atmosphere by instruments especially on SOHO, TRACE, Hinode, STEREO and SDO missions have provided considerable information about the nature and properties of solar magnetic fields and their influence on activity. The avalanche of observational discoveries provided by these facilities have stimulated complex theoretical and numerical studies of energy, momentum transport and stability analysis from the deep interior into chromospheric and coronal plasma structures. Recent major leaps have enabled the identification of key processes associated with magnetic fields that encompass small-scale flux tubes, MHD and kinetic wave modes, signatures of localised reconnection and plasma flows. Discovery of a range of dynamic phenomena in localised magnetic structures are not just typical of the Sun, as flare-induced bursts are now a popular subject of late-type star studies expanding the field of high-resolution solar physics to other astrophysical objects.

The goal of this session is to gather together a focussed group of specialists who, observationally and theoretically study a wide range of phenomena that have their pronounced signatures across the solar atmosphere. These signatures are manifest in multi-wavelengths. The proposed session attempts to bring theorists and observers to critically evaluate the processes related to magnetic fields in the solar atmosphere. We aim to:

(i) carefully examine current trends and challenges related to sources of solar magnetism and identify their effects on processes in the solar atmosphere;
(ii) make progress in attacking key problems in the above area through a synthesis of theoretical modelling and data analysis.