Objective:
Our Sun's magnetic field isresponsible for driving a diverse range of dynamic phenomena at the photosphere and in the outer atmospheric layers. The mechanisms that control the large-scale distribution of the surface magnetic field include differential rotation, meridional circulation, and supergranular flows. The magnetic field is structured on a wide range of spatial scales ranging from the smallest, granular-sized patches, to the largest, active regions that comprise one or several sunspots. Sunspot magnetic fields have been extensively studied since their detection in the early 20th century but a comprehensive understanding regarding their formation, evolution, fine structure, and dissolution still remains elusive. On the other hand, active regions store large amounts of magnetic free energy that can be impulsively released during flares and mass ejections, which are important drivers of space weather. Predicting the onset of eruptive flares, the energy associated with them and their subsequent geo-effectiveness has become ever so important in a technology-driven era for human sustenance. This underscores the importance of investigating active region dynamics to obtain a holistic picture of how the solar magnetic field is transported from the interior, its coupling of the atmosphere, and its modulation of space climate.
We propose a one-day Online Workshop during the meeting of the ASI-2021 to address the following
topics -
1) The physics of the solar dynamo and the nature of sub-photospheric flows in active regions,
2) The manner in which magneto-convection drives the emergence of flux,
3) The processes that contribute to the build up of free energy in powering flares, and
4) Application of Numerical Simulations & Machine Learning to investigate active region dynamics
The focus of the Workshop would be on recent highlights in the field of active region dynamics with special emphasis on new diagnostic techniques, advanced numerical simulations, and data mining tools based on machine learning.
Participation and Schedule:
We invite participation from researchers, engineers, PhD students, and post docs working in the area of solar physics. There will be four sessions in the workshop pertaining to the topics described above, with each session being 1.5 hours in duration.
Please see the Workshop programme and the Abstract Book.
No. of expected Participants: 50
Tentative Invited Speakers:
Shravan Hanasoge (TIFR), Rahul Yadav (Stockholm University), Vema Reddy (IIA), B. Ravindra (IIA), Ranadeep Sarkar (University of Helsinki)
Workshop Resources:
USO/PRL will host the Online Workshop as similar events have been conducted recently with live streaming capability.
Workshop Proposers:
Rohan Eugene Louis, (USO/PRL), Nandita Srivastava (USO/PRL), Shibu K. Mathew (USO/PRL), Piyali Chatterjee (IIA), Bidya Binay Karak (IIT-BHU)