Fredagskollokvium: Waves in the solar atmosphere and MHD seismology

Petra Kohutova, Rosseland Centre for Solar Physics, ITA

Dr. Petra Kohutova, Postdoc at Rosseland Centre for Solar Physics, ITA/UiO.

Solar atmosphere is filled with a ZOO of waves. I outline very basic principles of MHD wave

theory, present an overview of various types of waves that were recently observed and demonstrate how such observations can be used as a diagnostic tool. This technique, known as MHD seismology is based on using the observations of such waves to derive properties of coronal plasma that are otherwise difficult to measure directly such as magnetic field strength, plasma density or density scale height. I will further present recent advances in our understanding of the mechanisms responsible for excitation and dissipation of waves in the corona and show how they contribute to the overall energy budget of the solar atmosphere. 

Publisert 18. mars 2019 16:02 - Sist endret 25. mars 2019 13:01