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Non-ideal MHD, Stability, and Dissipation in Protoplanetary Disks

4–8 Aug 2014
Niels Bohr Institute
Europe/Copenhagen timezone

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Session

Thursday Morning

7 Aug 2014, 09:00
Auditorium A (Niels Bohr Institute)

Auditorium A

Niels Bohr Institute

Blegdamsvej 17 Copenhagen

Conveners

Thursday Morning

  • Mark Wardle (MacquarieUniversity)

Presentation materials

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  1. 5. Signatures of accretion and MRI in protostellar disks
    Prof. Jeremy Goodman (Princeton University)
    07/08/2014, 09:00
    Workshop Main Programme
    Accretion rates are usually diagnosed via boundary-layer emission. However, this does not directly reveal the stresses that transport angular momentum. If MRI is responsible, then it may be confined to active layers off the disk midplane at some radii. On the other hand, recent years have seen a growing body of observations of molecular emission lines from high altitudes in the disk,...
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  2. 11. Observational Signatures of MRI-driven Turbulence in Protoplanetary Disks: Connecting Numerical Simulations with ALMA
    Dr Jacob Simon (Sagan Fellow, Southwest Research Institute, JILA/University of Colorado)
    07/08/2014, 09:30
    Workshop Main Programme
    Protoplanetary disks play a key role in star and planet formation processes.  Turbulence in these disks, which arises from the magnetorotational instability (MRI), not only causes accretion of mass onto the central star, but also sets the conditions for processes such as dust settling, planetesimal formation, and planet migration.  However, the exact nature of this turbulence is still not very...
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  3. 17. The Effects of Far-UV Irradiation on the Thermal Structure of Disks
    Dr Jon Ramsey (Universität Heidelberg, Zentrum für Astronomie, Insitut für Theoretische Astrophysik)
    07/08/2014, 10:30
    Workshop Main Programme
    It is generally expected that most low-mass young stars have a (time-variable) far-UV excess which is correlated with ongoing accretion. Although far-UV photons cannot ionise hydrogen, they are important for dissociating hydrogen, ionising carbon, as well as other processes (e.g., photoelectric heating of dust, pumping of molecular hydrogen). In this talk, I will present the results of...
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  4. 8. Structures and Dynamics in the Outer Regions of Turbulent Protoplanetary Disks.
    Dr Mario Flock (DSM/IRFU/SAP CEA)
    07/08/2014, 11:00
    Workshop Main Programme
    In this talk we present current results from our research using global 3D non-ideal MHD stratified disk simulations. We focus on axisymmetric and non-axisymmetric structures, evocate by the magneto-rotational instability in the outer regions of a protoplanetary disk. We performed non-ideal global 3D MHD stratified simulation of the dead-zone outer edge using the FARGO MHD code PLUTO. The...
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  5. 34. Discussion VI
    07/08/2014, 11:30
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