Astrophysical Magnetohydrodynamics

Europe/Stockholm
Kiljavanranta Conference Centre, Finland

Kiljavanranta Conference Centre, Finland

Kiljavanranta, Kotorannantie 49, 05250 Kiljava, Finland,<br> tel. 09-276 251,<br> http://www.kiljavanranta.fi/in_english/
Anvar Shukurov (Newcastle University), Kandaswamy Subramanian (Inter-University Centre for Astronomy and Astrophysics), Maarit Korpi (Helsinki University)
Description
→ Link to the more Detailed Editorial Note of the special issue in Astronomische Nachrichten.

A meeting on the occasion of the 50th birthday of Axel Brandenburg (Nordita, Stockholm, Sweden). The location has been chosen in Finland, where the academic career of Axel has started. The scope of the meeting covers the broad range of Axel's research interests, from planets to the Sun and stars, to galaxies, and to the Early Universe, with emphasis on the role and origin of magnetic fields, and on numerical experiments. Axel has published with about 130 coauthors. The purpose of the meeting is to bring together leading experts in these research areas, many of whom will inevitably -- but not exclusively -- be Axel's friends and coauthors.

The venue will be the Kiljavanranta Conference Centre located by the lake Sääksjärvi about 50 km from Helsinki (and 35 km from the Helsinki-Vantaa airport, and 10 km from the nearest town, Nurmijärvi). The Centre provides excellent working environment and attractive leisure facilities.

    • Morning session 1
      • 1
        Introduction
        Speaker: Dr Maarit Korpi (Observatory, University of Helsinki)
      • 2
        A new era for mean fields: test fields and tests
        Speaker: Prof. Axel Brandenburg (NORDITA)
    • 10:15
      Coffee break
    • Morning session 2
      • 3
        Mean electromotive force proportional to mean flow in MHD turbulence
        Speaker: Prof. Karl-Heinz Rädler (AIP)
      • 4
        The origin of our galactic magnetic field
        Speaker: Prof. Russell Kulsrud (Princeton)
    • 12:00
      Lunch break
    • Afternoon session 1
      • 5
        Direct simulation of fossil fields in convective protostars
        Speaker: Dr Rainer Arlt (AIP, Potsdam)
      • 6
        Star-in-a-box simulations of the solar dynamo
        Speaker: Dr Boris Dintrans (LAOMP, Toulouse)
    • 14:30
      Coffee break
    • Afternoon session 2
      • 7
        Dynamics of the solar magnetic field from SOHO/MDI
        Speaker: Dr Elena Benevolenskaya (Stanford)
      • 8
        Large-scale dynamos in local models of turbulent convection
        Speaker: Dr Petri Käpylä (Observatory, University of Helsinki)
      • 9
        Solar fluctuative magnetic field after data concerning sunspots violating the Hale polarity law
        Speaker: Prof. Dmitry Sokoloff (Moscow State University)
    • Discussion session
    • 17:30
      Dinner
    • 19:00
      Sauna evening nearby the lake Sääksjärvi
    • Morning session 1
      • 10
        Supersonic turbulence and dynamo action
        Speaker: Åke Nordlund
      • 11
        Memory effects in turbulent transport
        Speaker: Dr Alexander Hubbard (NORDITA)
    • 10:30
      Coffee break
    • Morning session 2
      • 12
        Flux rope dynamos
        Speaker: Prof. Anvar Shukurov (School of Mathematics and Statistics, Newcastle University, U.K.)
      • 13
        Simple laminar dynamo solutions in finite volumes
        Speaker: Dr David Moss (Manchester University)
    • 12:00
      Lunch break
    • Afternoon session 1
      • 14
        Symmetry breaking in physics: The 2008 Nobel Awards
        Speaker: Prof. Paul Hoyer (University of Helsinki)
      • 15
        On global conserved quantities in spectral simulations of MHD turbulence
        Speaker: Dr Chi-Kwan Chan (ITC Cambridge)
    • 14:30
      Coffee break
    • Afternoon session 2
      • 16
        Three kinds on non-helical mean-field dynamos
        Speaker: Prof. Igor Rogachevskii (Ben-Gurion University of the Negev)
      • 17
        Effect of turbulent convection on differential rotation and formation of magnetic structures
        Speaker: Prof. Nathan Kleeorin (Ben Gurion)
      • 18
        Turbulence at the Sun's surface
        Speaker: Prof. Michel Rieutord (LAOMP, Toulouse)
    • Discussion
    • 18:30
      Conference dinner
    • Morning session 1
      • 19
        Dynamo action in linear shear flows
        Speaker: Dr Sridhar S. (RRI, Bangalore)
    • 10:30
      Coffee break
    • Morning session 2
      • 20
        Comparisons and connections between large scale dynamo theory and accretion disk theory
        Speaker: Prof. Eric Blackman (Rochester)
      • 21
        Dynamos and magnetic field detachement in thermally unstable interstellar flows
        Speaker: Dr Maarit Korpi (Observatory, University of Helsinki)
    • 12:00
      Lunch break
    • Afternoon session 1
      • 22
        Numerical global simulations of Taylor instability in jets
        Speaker: Dr Alfio Bonanno (Catania)
      • 23
        On the saturation of the non-ideal magnetorotational instability via parasitic instabilities
        Speaker: Dr Martin Pessah (IAS, Princeton)
    • 14:30
      Coffee break
    • Afternoon session 2
      • 24
        Structure of Thin Accretion Disc Around Magnetized Stars
        Speaker: Dr Solomon Tessema (Gothenburg)
      • 25
        Hall MHD in a strong magnetic field
        Speaker: Dr Daniel Gomez (Buenos Aires)
      • 26
        Stability of the magnetospheric boundary in long-period X-ray pulsars
        Speaker: Dr Nazar Ikshanov (NSSTC)
    • Discussion session
    • 17:30
      Dinner
    • Evening lecture
      • 27
        On the early days of dynamo theory
        Speaker: Prof. Karl-Heinz Rädler (AIP)
    • Morning session 1
      • 28
        Simulations in spherical wedge domains: recent results
        Speaker: Prof. Reza Tavakol (Queen Mary, London)
      • 29
        New experiments to study nonaxisymmetric magnetic instabilities
        Speaker: Prof. Guenther Ruediger (AIP, Potsdam)
    • 10:30
      Coffee break
    • Morning session 2
      • 30
        Magnetic fields near the Galactic center
        Speaker: Dr Katia Ferriere (LAOMP, Toulouse)
      • 31
        Magnetic field generation in the early universe
        Speaker: Prof. Subramanian Kandaswamy (IUCAA)
    • 12:00
      Lunch break
    • Afternoon session 1
      • 32
        Predicting turbulent stresses in a local disk model
        Speaker: Ms Anne Liljeström (University of Helsinki)
      • 33
        Growth of magnetic fields in clusters of galaxies
        Speaker: Mr Paul Sutter (Univ. of Illinois)
    • 14:30
      Coffee break
    • Afternoon session 2
      • 34
        Galaxies as building blocks for magnetic fields in the large scale structures of the Universe
        Speaker: Dr Yohan Dubois (Univ. of Oxford)
      • 35
        Bifurcation structure of nonlinear dynamos in torus geometry
        Speaker: Dr John Brooke (Manchester University)
      • 36
        Kinematic dynamo simulations in cylindrical geometry
        Speaker: Dr Andre Giesecke (Dresden-Rossendorf)
    • Discussion session
    • 17:30
      Dinner
    • Evening lecture
      • 37
        Improving helmet protection against traumatic brain injury: a physics perspective
        Speaker: Prof. Eric Blackman (Rochester)
    • Morning session 1
      • 38
        Stellar magnetic fields: observations and nonlinear modelling
        Speaker: Ms Marjaana Lindborg (Observatory, University of Helsinki)
      • 39
        Rapid dynamo saturation without net small-scale helicity losses
        Speaker: Mr Simon Candelaresi (NORDITA)
      • 40
        Gravitational stability of accretion discs
        Speaker: Ms Fazeleh Khajenabi (UCD)
      • 41
        The alpha effect with imposed and dynamo-generated magnetic fields
        Estimates for the nonlinear alpha effect in helical turbulence are presented using two different approaches where a uniform magnetic field is applied either to the actual field, or where separate evolution equations are solved for a set of different test fields. Both approaches agree for stronger fields, but there are apparent discrepancies for weaker fields that can be explained by the influence of dynamo-generated meso-scale magnetic fields. Examples are discussed where with an imposed magnetic field the alpha effect is either drastically overestimated, or drastically underestimated compared with the kinematic value. It is demonstrated that the kinematic value can be estimated correctly by reseting the magnetic field in regular time intervals.
        Speaker: Fabio Del Sordo (NORDITA)
    • 11:00
      Coffee break
    • Closing discussion
    • 12:00
      Lunch