[seminar] Petar Mimica (Tue 22nd Mar, 11:00h, F-201)

[Ivica Smolic]

Dear colleagues,

I would like to invite you to the following seminar (note that the time 
is 11:00h sharp!),

*Petar Mimica*

(Department of Astronomy and Astrophysics
University of Valencia, Spain)

*Jets powered by tidal disruption of stars by black holes*

  The non-thermal transient Swift J1644+57 is thought to be caused by a
  jet powered by a tidal disruption event (TDE). The early time emission
  can be explained in a manner similar to a gamma-ray burst afterglow. An
  open mystery is the origin of the late-time radio re-brightening.

  We model the J1644 radio emission by assuming it is produced by a
  relativistic jet powered by the accretion of a tidally-disrupted star
  onto a super-massive black hole. We perform multi-dimensional
  hydrodynamic simulations coupled to a self- consistent radiative
  transfer calculation to study the synchrotron radio emission.

  Once the best-fit model for the Swift J1644 event is presented, we use
  it to discuss the implications of the TDE jet radio emission the
  upcoming wide-field radio surveys. We also comment on the prospects for
  resolving the jet structure with long baseline interferometry, as well
  as on the possibility of determining the properties of the galactic gas
  close to the supermassive black hole.


Best regards,

Ivica Smolić


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