Astrophysics Workshop on "Saturation and Transport Properties of MRI-driven Turbulence"

Institute for Advanced Study, School of Natural Sciences
June 16th - 18th, 2008

[About] [Program] [Organizers] [Participants] [Visit to PPPL]

Post-workshop News

The videos are now available through the IAS website.

About

The aim of this meeting is to bring together a relatively small number of experts on different aspects of the generation and saturation of magnetohydrodynamic (MHD) turbulence driven by the magnetorotational instability (MRI) in order to discuss recent progress and future challenges in the field.

The goal is to have a focused meeting on these problems:
* Numerical and theoretical challenges in MRI driven turbulence
* Interface between dynamo theory and MRI
* Role of non-ideal effects in the excitation and saturation of the MRI
* Interplay between small scales and large scales in MHD turbulence
* MHD turbulence and transport in astrophysical disks

In the spirit of facilitating close interactions between speakers and the audience, as well as devoting time for discussion after each session, we are keeping the number of talks small. We expect that this will be a very interactive meeting, with several focused discussion sessions throughout the workshop. For interested participants, there will be room for a number of posters. Please contact us if you are interested in this possibility.

There will be no registration fee for this workshop. Attendance to this event is by invitation only.

Program

Talks Schedule

Time	Monday June 16	Tuesday June 17	Wednesday June 18
8:50	Daily Announcements
	Moderator: J. Stone	Moderator: E. Blackman	Moderator: R. Narayan
9:00	An MRI Overview: Old Simmering Issues and New Directions (w/ movies) S. Balbus	Turbulent Dynamo Action S. Boldyrev	The MRI in a Collisionless Plasma E. Quataert
9:30	New Results from Shearing Box Studies of the MRI C. Gammie	Small-scale Dynamo, the Structure of Isotropic MHD Turbulence, and the Role of Magnetic Prandtl Number A. Schekochihin	Equilibrium Structure of Radiation-dominated Disk Segments (w/ movies) S. Hirose
10:00	Self Sustaining Cycle in Zero Net Flux MRI Turbulence G. Lesur	Large-scale Dynamo Action in MRI Disks (w/ movies) A. Brandenburg	Thermodynamics and Spectra of Optically Thick Accretion Disks O. Blaes
10:30	COFFEE BREAK - Bloomberg Hall
11:00	Models of Turbulent MHD Angular Momentum Transport Beyond the alpha Parametrization M. Pessah	MRI-driven Turbulence and Dynamo Action (w/ movies) F. Cattaneo	Understanding Thermal Stability of Radiation-Dominated Disks and Radiative Efficiency of Global Relativistic Disks J. Krolik
11:30	MRI-driven Turbulence with Resistivity T. Sano	Discussion	Magnetic Fields and Jet Formation J. Hawley
12:00	Discussion	Lunch begins at 12:00 on Tue	Discussion
12:30	LUNCH - Dilworth Room
	Moderator: F. Cattaneo	Moderator: J. Goodman	Moderator: C. Terquem
2:00	Generalized Shearing Boxes for Multi-Scale Studies of MHD Turbulence C.K. Chan	The Role of Magnetic Reconnection in Angular Momentum Transport D. Uzdensky	Growth of the MRI in Protoplanetary disks M. Wardle
2:30	Numerical Simulations of the MRI: the Effect of Dissipation Coefficients (w/ movies) S. Fromang	Experimental Attempts to Study MRI and Related Instabilities in the Laboratory H. Ji	MRI Turbulence in Protostellar Disks N. Turner
3:00	MRI-driven Turbulent Resistivity P.Y. Longaretti	Visit to PPPL MRI & MRX Experiments	Discussion
3:30	TEA - Fuld Hall	TEA - PPPL	TEA - Fuld Hall
4:00	Discussion	Discussion at PPPL	Discussion

Posters

"The Excitation of Density Waves in Turbulent Accretion Disks", T. Heinemann
"Preliminary MHD Results from the MRI Experiment", M. Nornberg
"Dynamo Action in MRI-Driven Turbulence in a Cylindrical Annulus" , A. Obabko, F. Cattaneo, and P. Fischer
"Numerical Simulations of the Princeton MRI Experiment" , A. Roach
"Limits on Purely Hydrodynamic Radial Transport of Angular Momentum with the Princeton MRI Experiment", E. Schartman
"Energy Flow and Dissipation in MRI Turbulence", J. Simon
"Numerical Experiments on Dynamo Action in Sheared and Rotating Turbulence" , T. Yousef, T. Heinemann, F. Rincon, A. Schekochihin, N. Kleeorin, I. Rogachevskii, S. Cowley, and J. McWilliams

Organizers

Scientific Organizing Committee

Steve Balbus (Ecole Normale Superieure, Paris)
Sebastien Fromang (CEA, Saclay)
Jeremy Goodman (Princeton University)
John Hawley (University of Virginia)
Pierre-Yves Longaretti (Observatoire de Grenoble)
Martin Pessah (Institute for Advanced Study)
Jim Stone (Princeton University)

Local Organizing Committee

Chi-kwan Chan (Center for Astrophysics)
Shane Davis (Institute for Advanced Study)
Jeremy Goodman (Princeton University)
Martin Pessah (Institute for Advanced Study)
Jim Stone (Princeton University)

Primary Contact

Martin Pessah
-mpessah-@-ias.edu-
School of Natural Sciences
Institute for Advanced Study
Einstein Drive
Princeton, NJ, 08540, USA

Participants

Steve Balbus (Ecole Normale Superieure, Paris)
Eric Blackman (Rochester)
Omer Blaes (UCSB)
Stanislav Boldyrev (Wisconsin)
Axel Brandenburg (Nordita)
Fausto Cattaneo (Chicago)
Chi-kwan Chan (Harvard)
James Cho (University of London)
Shane Davis (IAS)
Sebastien Fromang (CEA, Saclay)
Charles Gammie (UIUC)
Jeremy Goodman (Princeton)
Greg Hammett (PPPL)
John Hawley (Virginia)
Tobias Heinemann (DAMTP)
Shigenobu Hirose (The Earth Simulator Center, JAMSTEC)
Hantao Ji (PPPL)
Julian Krolik (Johns Hopkins)
Geoffroy Lesur (DAMTP)
Pierre-Yves Longaretti (Observatoire de Grenoble)
Ramesh Narayan (Harvard)
Mark Nornberg (PPPL)
Aleksandr Obabko (Chicago)
Martin Pessah (IAS)
Eliot Quataert (Berkeley)
Takayoshi Sano (Osaka University)
Ethan Schartman (PPPL)
Alexander Schekochihin (Imperial College)
Jake Simon (Virginia)
Jim Stone (Princeton)
Caroline Terquem (Institut d'Astrophysique de Paris)
Neal Turner (JPL)
Dmitri Uzdensky (Princeton)
Mark Wardle (Macquarie University)

Visit to PPPL

As part of this workshop, there will be a visit to the Princeton Plasma Physics Laboratory to see the Magnetorotational Instability Experiment and the Magnetic Reconnection Experiment.