Magnetohydrodynamics of stellar interiors
MSI
6 September 2004 to 17 December 2004
Programme theme
At the heart of all observed stellar magnetic activity lies the complex dynamical behaviour of the magnetic field in a star's interior, which forms the theme of this programme. Discussions will focus on the nonlinear interactions between turbulent convection, rotation and magnetic fields in the interiors of stars like the Sun, and will aim to confront theory with observations. Research into the magnetohydrodynamics (MHD) of stellar interiors is currently at an extremely exciting stage, with ever-improving observations posing a number of new theoretical challenges. High-resolution observations of the solar surface and solar atmosphere, both from ground-based telescopes and from space, have yielded amazingly detailed images of magnetic features and associated motions. Helioseismology has provided important information on the solar interior, particularly regarding the internal rotation rate: the unexpectedly strong shear (the tachocline) at the interface between the convection zone and the underlying radiative zone came as a surprise to theoreticians. Asteroseismology is beginning to probe the interiors of more distant stars.
Understanding the fundamental physical questions to which these observations give rise, requires a combination of computational and analytical approaches. With the advent of affordable parallel computing facilities, allied to advances in computational techniques, numerical experiments are now able, for the first time, to explore parameter regimes of astrophysical interest. These results also provide crucial input into the formulation of new and general theories, for such problems are intrinsically nonlinear and there is a strong overlap with nonlinear dynamics, including bifurcation theory and pattern formation. The programme will address all the fundamental issues, bringing together observers as well as theoreticians. Particular attention will be devoted to both small and large-scale dynamo action, to the origin and role of the tacholine and to techniques for large-scale computation in astrophysics.
Click here to download the programme's final scientific report
Preprints
| Title | Year | Programme | |
|---|---|---|---|
The case for a distributed solar dynamo shaped by near-surface shearAuthors: Axel Brandenburg |
2004 | MSI | 28 February 2020 |
Hasimoto transformation and vortex soliton motion driven by fluid helicityAuthors: SN Stechmann, DD Holm |
2004 | MSI | 21 October 2016 |
What is a flux tube? On the magnetic topology of buoyant flux structuresAuthors: Nicholas Brummell, KS Cline, Fausto Cattaneo |
2004 | MSI | 21 October 2016 |
Advected fields in maps: II. dynamo action in the stretch-fold-shear mapAuthors: AD Gilbert |
2004 | MSI | 21 October 2016 |
Advected fields in maps: III. passive scalar decay in baker's mapsAuthors: AD Gilbert |
2004 | MSI | 21 October 2016 |
The radial distribution of magnetic helicity in the solar convective zone: observations and dynamo theoryAuthors: Dmitry Sokoloff, Keke Zhang, Igor Rogachevskii, ET Al |
2004 | MSI | 21 October 2016 |
Dynamo action in flows with cat's eyesAuthors: Alice Courvoisier, AD Gilbert, Yannick Ponty |
2004 | MSI | 21 October 2016 |
Workshops
Magnetohydrodynamics of stellar interiors
6 September 2004 to 17 September 2004
Large-scale computation in astrophysics
11 October 2004 to 15 October 2004
Tachocline dynamics
8 November 2004 to 12 November 2004
Magnetic fields In plasmas, stars and galaxies
6 December 2004 to 6 December 2004
Stellar dynamos
13 December 2004 to 17 December 2004
Seminars
| Tuesday 21st September 2004 | |||
|---|---|---|---|
| 10:00 to 11:30 |
Parameter dependence of convection in spherical shells and its dynamo action |
Room 1 | |
| Thursday 23rd September 2004 | |||
|---|---|---|---|
| 10:00 to 11:30 |
Christopher Jones University of Exeter |
Room 1 | |
| Tuesday 28th September 2004 | |||
|---|---|---|---|
| 10:00 to 11:30 |
Kazunari Shibata Kyoto University |
Room 2 | |
| Thursday 30th September 2004 | |||
|---|---|---|---|
| 10:00 to 11:30 |
David Galloway University of Sydney |
Room 2 | |
| Tuesday 5th October 2004 | |||
|---|---|---|---|
| 10:00 to 11:30 |
Robert Rosner University of Chicago |
Room 2 | |
| Thursday 7th October 2004 | |||
|---|---|---|---|
| 14:30 to 16:00 |
Neal Hurlburt |
Room 1 | |
| Tuesday 19th October 2004 | |||
|---|---|---|---|
| 10:00 to 11:30 |
Dynamical tides and wave attractors in rotating fluid bodies |
Room 1 | |
| Thursday 21st October 2004 | |||
|---|---|---|---|
| 10:00 to 11:30 |
Rainer Hollerbach University of Glasgow |
Room 1 | |
| Tuesday 26th October 2004 | |||
|---|---|---|---|
| 10:00 to 11:30 | Room 1 | ||
| Thursday 28th October 2004 | |||
|---|---|---|---|
| 10:00 to 11:30 |
Kandaswamy Subramanian |
Room 1 | |
| Tuesday 2nd November 2004 | |||
|---|---|---|---|
| 10:00 to 11:30 |
Michel Rieutord Observatoire Midi-Pyrenees |
Room 1 | |
| Thursday 4th November 2004 | |||
|---|---|---|---|
| 10:00 to 11:30 | Room 1 | ||
| Tuesday 16th November 2004 | |||
|---|---|---|---|
| 10:00 to 11:30 |
Arnab Choudhuri Indian Institute of Science |
Room 2 | |
| Thursday 18th November 2004 | |||
|---|---|---|---|
| 10:00 to 11:30 |
Paul Cally Monash University |
Room 2 | |
| Tuesday 23rd November 2004 | |||
|---|---|---|---|
| 10:00 to 11:00 |
David Hughes University of Leeds |
Room 1 | |
| 16:30 to 17:30 | Room 1 | ||
| Thursday 25th November 2004 | |||
|---|---|---|---|
| 10:00 to 11:00 |
Patrick Diamond University of California, San Diego |
Room 1 | |
| Tuesday 30th November 2004 | |||
|---|---|---|---|
| 10:00 to 11:30 |
Some comments on the use of Chandrasekhar's adiabatic exponents in compressible hydrodynamics |
Room 1 | |
| Thursday 2nd December 2004 | |||
|---|---|---|---|
| 10:00 to 11:15 |
Juerg Beer |
Room 1 | |
| 11:30 to 12:45 |
Nigel Weiss University of Cambridge |
Room 1 | |
| Tuesday 7th December 2004 | |||
|---|---|---|---|
| 10:00 to 10:40 | Room 1 | ||
| 10:40 to 10:55 | Room 1 | ||
| 10:55 to 11:10 | Room 1 | ||
| 11:25 to 11:40 | Room 1 | ||
| 12:00 to 12:40 |
Eric Blackman University of Rochester |
Room 1 | |
| 12:40 to 13:00 |
Axel Brandenburg NORDITA |
Room 1 | |
| 14:00 to 14:20 | Room 1 | ||
| 14:40 to 15:20 | Room 1 | ||
| 15:40 to 15:55 | Room 1 | ||
| 15:55 to 16:10 | Room 1 | ||
| 16:10 to 16:25 | Room 1 | ||
| Thursday 9th December 2004 | |||
|---|---|---|---|
| 10:30 to 11:30 |
Andrew Collier Cameron University of St Andrews |
Room 1 | |
Organisers
- David Hughes University of Leeds
- Robert Rosner University of Chicago
- Nigel Weiss University of Cambridge
Speakers
- Juerg Beer
- Eric Blackman University of Rochester
- Axel Brandenburg NORDITA
- Paul Cally Monash University
- Andrew Collier Cameron University of St Andrews
- Arnab Choudhuri Indian Institute of Science
- Patrick Diamond University of California, San Diego
- David Galloway University of Sydney
- Rainer Hollerbach University of Glasgow
- David Hughes University of Leeds
- Neal Hurlburt
- Christopher Jones University of Exeter
- Michel Rieutord Observatoire Midi-Pyrenees
- Robert Rosner University of Chicago
- Kazunari Shibata Kyoto University
- Kandaswamy Subramanian
- Nigel Weiss University of Cambridge
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