Observational signatures of particle beams in solar flares


Solar flares are the most energetic events in our solar system and are generated in out of equilibrium plasma magnetic field interactions. The energy released during a solar flare can be as high as 1025 Joules and influence our terrestrial environment. Stellar flares are much more energetic events with energies as high as 1030 Joules. They are thought to originate from processes similar to solar flares operating under different boundary conditions.

Project Description

The prevailing model for flare initiation is based on an electron beam that penetrates the lower atmosphere producing explosive evaporation and heating to high temperatures. The observational signatures of the processes at work can be identified in spectral lines and continua across the electromagnetic spectrum. The project will combine state-of-the-art simulations with observations to address some fundamental questions of solar flare initiation and evolution. The main objectives of the project are:

  • Perform radiative hydrodynamic simulations of flares. Hard X-ray observations can be used to constrain the input parameters of the models
  • Investigate the generated spectra and identify observational signatures that are unique to proton beams
  • Compare the simulated spectra with high resolution spectroscopic observations
  • Use the simulations to define the science goals of future ground-based and space-borne observatories. These observatories include the Daniel K Inoue Solar Telescope the European Solar telescope, Solar Orbiter and others.

Other information

QUB has been a member of F-CHROMA a research consortium funded by the European Commission, that focusses on space-based and ground-based multi-mode, multi-wavelength study of solar flares. The student will work in collaboration with an international team of researchers at QUB, Europe and the US. For more information please see the project supervisor.

Facilities to be used

RADYN & RH (Radiative Hydrodynamic Codes), Swedish Solar Telescope (La Palma), Dunn Solar Telescope (New Mexico), Daniel K Inoue Solar Telescope (Maui), Solar Dynamics Observatory (NASA satellite).

Other QUB staff and students associated with the project

Prof M. Mathioudakis, Dr Aaron Reid, Dr David Kuridze, Mr Ondrej Prochazka

More information from the primary supervisor: Prof Mihalis Mathioudakis

public/phds2017/2017_mathioudakis_flares.txt · Last modified: 2016/12/09 22:33 by Stuart Sim

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