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SUMMARY:Simona Pacuraru "Magnetic field evolution during tidal disruption 
 events"
DTSTART:20260204T113000Z
DTEND:20260204T130000Z
DTSTAMP:20260506T175400Z
UID:indico-event-50604@agenda.infn.it
CONTACT:sxp1082@student.bham.ac.uk
DESCRIPTION:A tidal disruption event (TDE) occurs when a star is torn apar
 t by the strong tidal pull of a supermassive black hole residing at the ce
 nter of a galaxy. During this event\, the stellar magnetic field gets tran
 sferred to the stream debris formed from the disruption\, taking part in t
 he subsequent evolution of the TDE. Making use of magneto-hydrodynamic sim
 ulations and a simplified semi-analytical model\, I studied the early evol
 ution of the debris stream around the black hole in the presence of magnet
 ic fields. I will present the results from this work\, focusing on the dyn
 amical effect of magnetic fields on gas through magnetic pressure. For str
 ongly magnetized stars\, the magnetic field can become dynamically importa
 nt\, causing a fast increase in the stream width\, an effect that may impa
 ct the subsequent gas evolution. Furthermore\, my characterization of the 
 magneto-hydrodynamic properties of the returning stream can be used in fut
 ure studies of the later phases of a TDE. These will be crucial to determi
 ne the role of magnetic fields in providing the source of viscosity when a
 n accretion disc has formed\, thus affecting observable signatures such as
  X-ray radiation and relativistic outflows.\n\nhttps://agenda.infn.it/even
 t/50604/
URL:https://agenda.infn.it/event/50604/
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