Dr Istvan Ballai

Position: Senior lecturer
Home page: http://pdg.group.shef.ac.uk/
Telephone: (0114) 2223833
Office: H9 Hicks building
Photo of Istvan Ballai


MAS252 Further Civil Engineering Mathematics and Computing Information  
MAS286 Mathematics and Statistics in Action Information  
MAS381 Mathematics III (Electrical) Information  


Interests: Solar plasma physics, linear and nonlinear waves
Research group: Plasma Dynamics Group
Publications: ArXiv, MathSciNet


Past grants, as Principal Investigator
Instabilities in partially ionized prominence plasmas
Damping of Forced Oscillations in Coronal Loops RS
Conference Attendance RS
Global Coronal Seismology Using SOHO/EIT Observations Nuffield
Past grants, as Coinvestigator
Application to STFC for Consolidated Grant Support for the Solar Physics and Space Plasma Research Centre (SP2RC) STFC
Consolidated Grant Support for the Solar Physics and Space Plasma Research Centre (SP2RC) STFC
Heating and Magneto-Seismology of the Solar Atmosphere STFC

Research interests:

Dr. Istvan Ballai's main research interest is in linear and nonlinear MHD waves occurring in solar and interplanetary plasmas. Waves can carry energy and momentum; when transferred to inhomogeneous plasmas they can heat or accelerate the plasma therefore MHD waves may play an important role in explaining the observed high temperatures in the solar corona. Waves can transport information about the environment in which they propagate, so they serve as a perfect tool for plasma diagnostics. We use local and global coronal waves to find average values for magnetic field and transport coefficients in the solar corona. When the temperature of the plasma is not high enough to ensure a full ionisation, the plasma becomes partially ionised with particles of different species colliding and modifying each other momentum and energy. Dr Istvan Ballai's reserch interest also covers dynamical aspects in such plasmas, including waves and instabilities, non-equilibrium effects, etc.

Teaching interests:

Differential and difference equations
Complex Analysis
Numerical methods