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NORDITA NEWSLETTER. 2009, ISSUE 1

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Visitors

Nordita welcomes two new long-term visitors:

Einar H. Guðmundsson received his PhD in Physics from the University of Copenhagen in 1981. His adviser was C. J. Pethick. He has worked in the fields of Neutron Stars (including magnetic neutron stars, Thomas-Fermi theory of matter in a strong magnetic field, neutron star envelopes, supernovae and neutrino trapping), Gamma-Ray Burst Afterglows (including their relation to the hosts galaxies of gamma-ray bursts), and Cosmology (including questions concerning the cosmological constant, evolution of galaxy clusters, gravitational lensing, evolution of the Universe, classical cosmological tests, cosmic microwave background, and the history and philosophy of cosmology). Einar is staying for two months and is sitting in 122:030 in the Nordita Astrophysics building.

Daniel Sunhede is visiting from the University of Jyväskylä. His advisor was Kimmo Kainulainen. Daniel is working on dark energy, scalar-tensor gravity and large extra dimensions. More recently he has been working on spherically symmetric spacetimes in metric f(R) gravity. Daniel is staying for three months and is sitting in 133:010 in the Nordita main building.


Status of the AstroDyn project

Nordita welcomes the three new PhD students who arrived in February: Fabio Del Sordo, who did his Master's thesis at the University of Pisa on the auroral ultraviolet emission and the connection with exoplanets, Koen Kemel, who did his Master's thesis at Gent University in Belgium on cold plasma discharges, and Simon Candelaresi, who did his Master's thesis at the University of Stuttgart on dielectric broadband spectroscopy. They have been accepted as graduate students at the Institute of Astronomy and will be supported through the ERC project on Astrophysical Dynamos. Nordita received altogether 27 applications.

Recruitment

NORDITA is presently recruiting one full professor and one assistant professor. The recruitment process for these positions is still in progress. The recruitment for Nordita Fellowships is now completed. Four applicants to the fellow positions have accepted to join Nordita in Fall 2009:

  • Annica Black-Schaffer (condensed matter physics)
  • Niccolo Bucciantini (astrophysics)
  • Valentina Giangreco (high energy physics)
  • Paata Kakashvili (condensed matter physics)

There are more positions to be filled within the AstroDyn project. In addition to the three PhD students that have already arrived, one more will arrive in August. Offers for the two post-doc positions have gone out and the following two applicants have now accepted:

  • Piyali Chatterjee (PhD from Indian Institute of Science, Bangalore)
  • Gustavo Guerrero (PhD from University of Sao Paulo)

The hiring of an assistant professor within the AstroDyn project is still in progress.

Nordita's second building at Roslagstullsbacken 17

Some of us have now moved permanently to the neighboring house, just to the left of the main Nordita building. It carries the official name Roslagstullsbacken 17, and internally at AlbaNova it is referred to as house 12. Correspondingly, the room numbers start with 122, where the second 2 refers to floor 2 (which is actually the ground floor since the count starts at 1 in the basement). For example, Ulf Wahlgren is now sitting in 122:003 and Axel Brandenburg is stitting in 122:028. The PhD students from the AstroDyn project are sitting in 122:027. This nomenclature is rather obscure and therfore we usually refer to the "other" Nordita building (or the Nordita Astrophysics building since this is where the participants in the AstroDyn project are now housed).

Nordita-Day in Stockholm on April 24, 2009

The program for the Nordita-Day in Stockholm is now available.


Nordita in April

09.30--10.30 Registration and Coffee
10.30--10.45 Words of welcome
10.45--11.45 Research at Nordita
* Axel Brandenburg: Astrophysical magnetism
* Stefan Hofmann: On dark budgets and global challenges
11.45--12.00 Break
12.00--13.00 Research at Nordita
* Jani-Petri Martikainen: From cool atoms to magic colloids
* Paolo DiVecchia: Particle physics: present status and perspectives
13.00--14.15 Lunch (registration required!)
14.15--15.00 Chris Pethick: Darwin, Galapagos and Nordita
15.00--15.30 Lárus Thorlacius: "Future directions for Nordita"
15:30--15:45 Break
15:45--16:00 Gard Titlestad - Nordic Council of Ministers
16:00--16:15 Björn von Sydow - Chairman of the Swedish Research Council and member of Parliament
16:15--16:30 Per Unckel - County Governor of Stockholm
16.30--18.00 Reception
19.00--23.00 Boat trip with banquet in the archipelago

Details

Solar physics and magnetohydrodynamics course at Nordita

During May there will a 7.5 point PhD course on solar physics and magnetohydrodynamics will be taught at Nordita. Students interested in this should look at www.nordita.org/science/courses and contact Axel Brandenburg; see also www.nordita.org/~brandenb/teach/solar for more details.

NORDITA Master Class in Physics 2009

The next NORDITA Master Class in Physics will be in Hillerød (Denmark) and will run from 26 July 2009 to 01 August 2009

Details

Evaluation of Nordita

The first evaluation of Nordita in Stockholm will be carried out during the spring of 2009. An evaluation committee has been appointed and a site visit is planned for 2-3 April, 2009.

Nordita Board

12 June 2009 is a tentative date for the next meeting of the Nordita Board in Stockholm. An extended 2-day meeting will be 3-4 September, with scientific presentations and informal discussions on the Thursday, and the actual Board meeting on the Friday.

Conferences

Astrophysical Magnetohydrodynamics

6-10 April 2009

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.

Details

Reionization with Multi-frequency Datasets

17-21 August 2009

Several different types of surveys are currently aiming at detecting signatures from the era beyond redshift 6, which is when the reionization of the Universe happened. Each of these surveys is at the cutting edge of what is possible, and detecting the desired signatures will be challenging. However, by comparing or cross-correlating the same areas on the sky between different data sets, a clearer detection may be possible.

Details

Programs and Workshops

Theoretical assessment and prediction of the biological and environmental effects of nanomaterials

Currently running: 6 - 28 March 2009

The environmental and health effects of nanomaterials are of global concern, both in view of assessing the impact of nanomaterials discharged into nature and for a safe and transparent development of nanotechnology, especially in relation to novel applications in biomedicine. At present, nanomaterials are already produced at an industrial scale and the number of consumer products featuring nanomaterials is increasing at a rapid pace. At the same time, detailed understanding of the potential biological and ecological effects of nanomaterials and the related legislation are clearly lagging behind. Some of the key questions related to these issues are the transport, uptake and transformation of nanomaterials in air, soil and natural waters, as well as within biological organisms.

Details

Astroparticle Physics - A Pathfinder to New Physics

30 March 2009 to 30 April 2009

The organizers, Tommy Ohlsson, Joakim Edsjö, Steen Hannestad, and Stefan Hofmann intend to keep the program fairly open regarding seminars, thus giving more time for actual research and discussing future research projects among the participants of the program. The aim is to have a couple of seminars each week during the running time of the program. In addition to the seminars, there will be a number of informal meetings to specifically discuss future progress in the various subtopics covered by the program and to have time to do actual work among the participants. The research topics to be covered at the program are: neutrino physics, dark matter, cosmology, supersymmetry, dark energy, inflation, extra dimensions, ultra-high energy cosmic rays, supernovae, leptogenesis.

Details and application form

Physics of relativistic flows

4 May to 13 June 2009

Relativistic jets are responsible for the huge luminosities seen in active galactic nuclei and gamma-ray bursts and are probably launched from the central black holes in these objects. The details of the jet launching mechanism, its acceleration, mechanisms of the energy dissipation, particle acceleration and the emission remain unknown. The aim of this Nordita program is to bring experts in different fields together to make a serious progress in our understanding of the physics of relativistic flows.

Details and application form

Electroweak Phase Transition

15 June to 31 July 2009

The exciting prospect of exploring the Higgs sector of the Standard Model and its presumed extensions at the LHC has renewed interest in electroweak baryogenesis (EWB) and the electroweak phase transition (EWPT). At the same time, constraints on CP violation, which is generically present in extensions of the Standard Model, will be tightened by new Electric Dipole Moment (EDM) experiments. Further into the future, there is the possibility of probing a first-order electroweak phase transition directly using the space-based gravitational wave detector LISA.

Details and application form

Nordita Preprints

→ Link to electronic preprints: www.nordita.org/preprints

2008-059
Alpha effect and turbulent diffusion from convection
P. J. Käpylä, M. J. Korpi, A. Brandenburg
Astron. Astrophys. (in press)
2008-060
Jahn-Teller induced Berry phase in spin-orbit coupled Bose-Einstein condensates
Jonas Larson, Erik Sjöqvist
2008-061
Twisting Hermitian and Hypercomplex geometries
Andrew Swann
2008-062
Turbulent dynamos in spherical shell segments of varying geometrical extent
Dhrubaditya Mitra, Reza Tavakol, Axel Brandenburg, David Moss
Astrophys. J. (in press)
2008-063
Superfluid signatures in magnetar seismology
Nils Andersson, Kostas Glampedakis and Lars Samuelsson
2008-064
The Shear Dynamo: quasilinear kinematic theory
S. Sridhar, Kandaswamy Subramanian
2008-065
Finite dimensional AKSZ-BV theories
Francesco Bonechi and Maxim Zabzine
2008-066
Large-scale dynamos in rigidly rotating turbulent convection
P. J. Käpylä, M. J. Korpi, A. Brandenburg
Astrophys. J. (in press)
2008-067
Black holes in asymptotically Lifshitz spacetime
Ulf H. Danielsson and Larus Thorlacius
2008-068
Nonlinear threshold behavior during the loss of Arctic sea ice
I. Eisenman and J.S. Wettlaufer
Proceedings of the National Academy of Sciences, USA, Vol. 106, no. 1, pgs 28-32 (2009)
2009-001
Advances in theory and simulations of large-scale dynamos
Axel Brandenburg
to appear in Space Sci. Rev
2009-002
Turbulent diffusion with rotation or magnetic fields
Axel Brandenburg, Andreas Svedin, Geoffrey M. Vasil
MNRAS (in press)
2009-003
Oscillatory migrating magnetic fields in helical turbulence in spherical domains
Dhrubaditya Mitra, Reza Tavakol, Petri J. Käpylä, Axel Brandenburg
''Phys. Rev. Lett. (submitted)
2009-004
Light scattering from an isotropic layer between uniaxial crystals
E.S. Thomson, L.A. Wilen and J.S. Wettlaufer
Submitted to J. Phys. Cond. Matt.
2009-005
Paradigm shifts in solar dynamo modeling
Axel Brandenburg
Proceedings of IAU Symposium 259: "Cosmic Magnetic Fields: From Planets, To Stars and Galaxies"
2009-006
Kaehler Metrics: String vs Field Theoretical Approach
P. Di Vecchia, A. Liccardo, R. Marotta and F. Pezzella
Fortsch. Phys.
2009-007
Axisymmetric viscous gravity currents flowing over a porous medium
Melissa J. Spannuth, Jerome A. Neufeld, J. S. Wettlaufer, M. Grae Worster
J. Fluid Mech. (in press)
2009-008
Induced interactions for ultra-cold Fermi gases in optical lattices
D.-H. Kim, P. Törmä, J.-P. Martikainen
2009-009
Effective Abelian and non-Abelian gauge potentials in cavity QED
Jonas Larson, Sergey Levin
2009-010
Dilute gas of ultracold two-level atoms inside a cavity; generalized Dicke model
Jonas Larson, Maciej Lewenstein
2009-011
The role of the Yoshizawa effect in the Archontis dynamo
Sharanya Sur, Axel Brandenburg
Monthly Notices Roy. Astron. Soc., submitted (2009)
2009-012
Vertical dissipation profiles and the photosphere location in thin and slim accretion disks
A. Sadowski, M. Abramowicz, M. Bursa, W. Kluzniak, A. Rozanska
2009-013
The Ising Model for Neural Data: Model Quality and Approximate Methods for Extracting Functional Connectivity
Yasser Roudi, Joanna Tyrcha, John Hertz
2009-014
Searching for the triplet Higgs sector via central exclusive production at the LHC
M. Chaichian, P. Hoyer, K. Huitu, V.A. Khoze, A.D. Pilkington
2009-015
Directing Brownian motion on a periodic surface
David Speer, Ralf Eichhorn, Peter Reimann
Phys. Rev. Lett. (in press)
2009-016
Intrinsic Ratchets
Martijn van den Broek, Ralf Eichhorn, Christian Van den Broeck
2009-017
N=2 world-sheet approach to D-branes on generalized Kaehler geometries. I. General formalism
A. Sevrin, W. Staessens, A. Wijns
2009-018
N=2 world-sheet approach to D-branes on generalized Kaehler geometries: II. Dualities
A. Sevrin, W. Staessens, A. Wijns
2009-019
Axial quasi-normal modes of neutron stars: Accounting for the superfluid in the crust

Lars Samuelsson and Nils Andersson

2009-018
N=2 world-sheet approach to D-branes on generalized Kaehler geometries: II. Dualities
A. Sevrin, W. Staessens, A. Wijns
2009-019
Axial quasi-normal modes of neutron stars: Accounting for the superfluid in the crust
Lars Samuelsson and Nils Andersson
2009-020
Self-interacting fundamental strings and black holes
Diego Chialva
2009-021
String Mass Shifts
Diego Chialva
2009-022
Onsager Reciprocity in Premelting Solids
S.S.L. Peppin, M.J. Spannuth, J.S. Wettlaufer
J. Stat. Phys. Vol. 134 (4), 701 - 708 (2009)

Items for Nordita News

If you have information about meetings or other items that would be useful to include in Nordita News, please send it to Anne Jifält, Nordita, email: anne@kth.se.

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