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SUMMARY:Dynamical and photometric signatures of the magnetospheric star-di
 sk interaction in different accretion regimes. - Claudio Zanni (INAF Turin
 )
DTSTART:20240617T130000Z
DTEND:20240617T140000Z
UID:TALK212164@talks.cam.ac.uk
CONTACT:Thomas Jannaud
DESCRIPTION:The interaction of a stellar magnetosphere with a surrounding 
 accretion disk is a fundamental process that determines different properti
 es of young forming stars. By channeling the accretion flow into funnels t
 hat impact the stellar surface\, it determines their observed variability.
  By regulating the angular momentum exchange between the star\, the disk a
 nd magnetospheric outflows\, it controls the stellar rotational evolution.
  I will use the outcome of three-dimensional simulations of the interactio
 n of a magnetized solar-mass protostar with a surrounding accretion disk t
 o show how magnetospheric accretion can occur in different regimes\, unsta
 ble\, stable or propeller. I will show how the magnetic torque applied to 
 the star\, spinning up or down its rotation\, depends on the accretion reg
 ime. I will characterize the main properties of synthetic lightcurves in d
 ifferent accretion regimes\, trying to find a connection between the stell
 ar photometric variability and the spin up/down state of the star.
LOCATION:MR14 DAMTP and online
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