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SUMMARY:The Magneto-thermal Instability in Dilute Magnetized Plasmas: Theo
 ry and simulations and more - Dr. Lorenzo Maria Perrone -- Leibniz-Institu
 te for Astrophysics Potsdam (AIP)
DTSTART:20230123T140000Z
DTEND:20230123T150000Z
UID:TALK195433@talks.cam.ac.uk
CONTACT:Callum William Fairbairn
DESCRIPTION:In dilute\, magnetized plasmas exchanges of heat across magnet
 ic field lines are strongly suppressed. The anisotropic character of heat 
 conduction\, together with large-scale temperature gradients\, destabilise
 s otherwise stable flows via the magneto-thermal instability (MTI) and gen
 erates turbulence. The MTI could be relevant in the intra-cluster medium i
 n the outskirts of galaxy clusters\, where it may supply a source of the o
 bserved turbulence\, and in the plasma of hot accretion flows around black
  holes\, where the MTI can interact with the magneto-rotational instabilit
 y (MRI) to produce complex dynamics. In this talk\, I will summarize recen
 t findings on the MTI saturation mechanism and present a general theory th
 at provides scalings and estimates for the turbulent levels appropriate fo
 r galaxy clusters. I will then address the question of how the MTI is modi
 fied in the presence of shear and rotation\, and attempt to characterise t
 he possible interplay between the MTI and the MRI in hot accretion flows.
LOCATION:In Person MR14
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