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SUMMARY:Special Seminar | Dr. Nitin Yadav (Indian Institute of Technology\
 , Delhi)
DTSTART:20260629T123000Z
DTEND:20260629T133000Z
DTSTAMP:20260629T154410Z
UID:www.aip.de-2533
CATEGORIES:Scientific
CATEGORIES:Scientific Talk
CATEGORIES:Public
CATEGORIES:Special Seminar
CATEGORIES:Sun\, Stars\, Exoplanets
CONTACT:Meetu Verma <mverma@aip.de>
DESCRIPTION:Speaker: Dr. Nitin Yadav (Indian Institute of Technology\, Del
 hi)\nTitle: From Photospheric Vortices to Torsional Alfvén Waves: Pathway
 s for Energy Transport in the Solar Atmosphere\nAbstract: Magnetohydrodyna
 mic (MHD) waves are widely regarded as key candidates for transporting and
  dissipating energy in the solar atmosphere. Among them\, torsional Alfvé
 n waves—driven by rotational or vortex-like flows—have received increa
 sing attention as efficient channels for coupling photospheric dynamics to
  the chromosphere and corona. Vortex flows are ubiquitous in the solar pho
 tosphere\, arising from turbulent convection and interacting with magnetic
  flux concentrations. Their signatures have been identified across a wide 
 range of magnetic environments\, from quiet Sun regions to strongly magnet
 ized plages\, and are now recognized as potential drivers of wave energy f
 lux into the upper atmosphere.\nIn this talk\, I will provide an overview 
 of the current understanding of vortices and their connection to torsional
  Alfvén waves\, drawing on both observations and numerical models. I will
  then highlight results from recent three-dimensional radiation-MHD simula
 tions (MURaM)\, which allow us to systematically study vortex dynamics acr
 oss quiet Sun\, weak plage\, and strong plage conditions. These simulation
 s reveal how vortex generation\, spatial distribution\, and evolution depe
 nd on the magnetic environment\, and how the resulting swirling motions ar
 e linked to Alfvénic perturbations. In particular\, I will discuss the ef
 ficiency of vortex-induced Alfvén wave propagation in different regimes a
 nd the possible pathways toward dissipation and heating through vortex int
 eractions in strongly magnetized flux tubes.\n
LOCATION:AIP\; Kirch building\, Conference room
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