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SUMMARY:Special Seminar | Alexandros Ziampras (LMU Munich)
DTSTART:20250319T123000Z
DTEND:20250319T133000Z
DTSTAMP:20260619T143746Z
UID:www.aip.de-2111
CATEGORIES:Scientific
CATEGORIES:Generic Event
CATEGORIES:Public
CONTACT:Oliver Gressel <ogressel@aip.de>
DESCRIPTION:Speaker: Alexandros Ziampras (LMU Munich)\nTitle: Dusty substr
 uctures in protoplanetary disks\nAbstract: CONTEXT: Protoplanetary disks e
 xhibit a rich variety of substructure. In mm continuum emission\, this is 
 often attributed to unseen\, gap-opening planets that can trap dust partic
 les at pressure bumps. In scattered light images\, several observed source
 s instead exhibit shadows that could be caused by misaligned inner disks.\
 nMETHODS: We present high-resolution radiation hydrodynamics simulations t
 hermally and dynamically coupled to a two-population dust model.\nRESULTS:
  We find that dust dynamics can significantly affect the resulting substru
 cture driven by the planet. Shadows cast by a misaligned inner disk onto t
 he outer disk can launch spiral arms at the shadow edges that permeate the
  entire disk. This leads to formation of concentric gaps\, trapping dust a
 t their edges and forming bright rings in continuum emission. We then comp
 ute synthetic images at mm and scattered light wavelengths and draw parall
 els to observed systems.\nCONCLUSION: Our results underscore the importanc
 e of an accurate treatment of radiative processes as well as dust-gas dyna
 mics in interpreting the observed substructure in protoplanetary disks.\n
LOCATION:AIP\; Leibnizhaus\, Seminar room
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