Thesis Defences at Nordita

by Hans Mühlen 31 Oct 2014 Thesis Defence
Published in the "From the Institute" section of Nordita News issue 1, 2014

Sarah Jabbari, PhD student at Nordita and Stockholm University, successfully defended her licentiate thesis "Origin of Solar Surface Activity and Sunspots" on 19 May 2014, with Vasilis Archontis of the University of St Andrews as opponent. Her thesis is based on three papers in which she combines for the first time the so-called negative effective magnetic pressure instability with the dynamo instability. Her model may provide an alternative to the current paradigm of sunspot formation. Sarah is supported through the VR project grant 621-2011-5076,  Turbulent dynamo simulation in a spherical shell segment , awared to Axel Brandenburg in January 2012.

Left to right: Axel Brandenburg (supervisor, Nordita), Vasilis Archontis (opponent, U. of St. Andrews), and Sarah Jabbari (licentiate); absent are committee members Jesper Sollerman and Jorrit Leenaarts (Dept. of Astronomy, Stockholm U.)

On 21 May 2014, Apostolos Vasileiadis, master student at Stockholm University, successfully defended his masters thesis "Particle Diffusion in Periodic Obstacle Arrays".

Left to right: Ralf Eichhorn (supervisor, Nordita) and Apsotolos Vasileiadis (master); absent are Astrid de Wijn (co-supervisor) and Hannes Hübel and Cristophe Clément (committee members; all three from Stockholm U.).