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Magnetic Fields in Galaxies
Monday, July 5
09:00 Welcome Lorentz Center
09:10 Why this Workshop? – Peter Katgert
09:25 K. Subrahmanian: Nonlinear restrictions on the galactic dynamo
R. Beck: Observations of the large-scale field
D. Sokoloff: Cosmological magnetic fields and galactic dynamo
10:45 Coffee/Tea in Common Roo
11:15 K. Otmianowska: Magnetic field evolution in interacting galaxies
M. Hanasz: Cosmic-ray driven dynamo in galactic disks
J. Brown: Observations of the galactic magnetic field from the IGPS
R. Stepanov: Reconstruction of the galactic magnetic field from combined
analysis of pulsar and extragalactic rotation measures
D. Mitra: How robust are pulsar and extragalactic rotation measures
12:45 Lunch at Gorlaeus Canteen
15:00 I. Patrickeyev: An iterative algorithm for RM-tomography of the galactic
W.Reich: Observational needs to trace galactic disk fields
M. Wolleben: A new polarization survey and a model for the galactic
16:20 Plenary discussion on Models for and observations of the large-field
· What are the predictions of the current best models for their origin, evolution and the time-scales involved ?
· What is the connection with the intergalactic (or intragalactic) field ?
· What determines the strengths of the large- (and small-) scale fields in the models, and how does that compare to the observed values ?
· Is there evidence for field asymmetries w.r.t. the galactic plane ?
· Field reversals; are they real and, if so, what is their scale and origin?
· What do we know about the magnetic field in the halo, and its connection to the field in the disk ?
17:30 Wine and Cheese Party (free of charge) in Common Room
Tuesday, July 6
09:00 C. Vogt: A Bayesian view on Faraday rotation maps
T. Ensslin: Galaxy cluster magnetic fields
M. Brentjens: Application of RM-synthesis to the Perseus Cluster
M. Johnston-Hollit: Large-scale structure in magnetic fields as inferred by extra-galactic Faraday rotation measures
A. Shukurov: The effects of spiral arms on the large-scale magnetic field
11:00 J. Han: New model for galactic magnetic fields from pulsar RMs: new picture about B-fields and spiral arms
J. Franco: Structuring a magentized thick gaseous disk
A. Fletcher: Spiral arms and the orientation of the regular magnetic field in M51
R. Braun: RM-synthesis Observations of Spiral Galaxy Disks
A. Snodin: Detailed modelling of magnetic fields in the barred galaxy NGC 1365
14:15 Plenary discussion on Relation between the large-scale field and the arms
· How do the field and the gas flow interact, and what do the observations and models tell us about that interaction?
· How well are the fields aligned with the spiral arms, and how does alignment come about?
15:00 E. Vasquez-S.: Turbulence in the ISM
M. Korpi: On the role of the magnetorotational instability for cool and thin
16:30 D. Sokoloff: Theory of the small-scale field in the ISM
K. Subrahmanian: How does the fluctuation dynamo saturate
J. Han: The spatial energy spectrum of galactic magnetic fields
M. Haverkorn: Turbulence in the warm ionized medium of inner galactin plane
Wednesday, July 7
09:00 T. Landecker: What do radio observations tell us about the small-scale properties of the magneto-ionic medium
M. Haverkorn: Observations of the small-scale field in the ISM
K. Chyzy: Magnetic fields in the violent galactic environment
F. Heitsch: Systematic effects in field measurements from polarimetry and Zeeman measurements
J. Brown: Observational evidence for the non-isotropy of the small-scale field
M. de Avillez: Global modelling of the ISM in star forming galaxies limitations,
predictions and tests
11:15 E. Berkhuijsen: Filling factors and scale-heights of the DIG in the Milky Way
M. de Avillez: Volume filling factors in the ISM - the role of the disk-halo-disk cycle
F. Heitsch: The field-density relation in the diffuse ISM
M. Haverkorn: Depolarization canals as diagnostics of the magneto-ionized medium
W. Reich: Faraday screens and canals
R. Beck: Methods to determine field strengths and their problems, and some results on magnetic energy densities in galaxies
15:00 T. Landecker: Recent results from the CGPS
D. Schnitzeler: Information on magnetic fields from the single-frequency WENNS survey
R. Kothes: A very large stellar wind bubble revealed by its Faraday rotation
M. Brentjens: RM-synthesis: background
16:40 Plenary discussion on the turbulent ISM and the properties of the small-
· What are the predictions for the interaction between ‘dynamo’s’ and ISM-physics?
· How can we best observe the results of the interaction between dynamo's and ISM-physics?
· How do the energy input into the turbulent ISM, and the decay and build-up of the field compare?
· How ubiquitious is turbulence in the warm ISM and what are its characteristics and typical scales?
· Is energy balance between the field and any of the other ISM components predicted, and what do the observations tell us?
· How well is the field coupled to the plasma?
· How do we best determine the properties of the small-scale field (Faraday tomography, ‘canals’, etc.?)
18:30 Workshop Dinner at Einstein, downtown Leiden (free of charge)
Thursday, July 8
09:15 W. Reich: The impact of absolute calibration
R. Beck: SKA and the magnetic universe
G. de Bruyn: LOFAR and the magnetic universe
11:00 Plenary discussion on future of models and observations
· What new instruments and techniques will and/or should become available?
· How can/must models be improved?
· What are the crucial experiments to test the models?
14:45 Wrapping up