Skip to main content

Dr Dmitrii Kolotkov


Position: Postdoctoral Research Fellow

Supervisor: Professor Valery Nakariakov

Research interests: solar physics; heliospheric physics; MHD seismology; nonlinear waves and oscillations; coronal, magnetospheric, and astrophysical plasmas

Funding: STFC Consolidated grant



Background

PhD in Physics, CFSA, University of Warwick, UK, 2017

MSc in Electophysics, Sarov Institute for Physics and Technology National Research Nuclear Institute "MEPhI", Russia, 2013

BSc in Applied Mathematics and Physics, Sarov Institute for Physics and Technology National Research Nuclear Institute "MEPhI", Russia, 2011


Research Description

My current research interests are mainly focused on the spectral analysis and analytical low-dimensional modelling of nonlinear, non-stationary, and multi-modal oscillatory processes in active regions of the solar atmosphere. In particular, my recent studies are related to the analysis of quasi-periodic processes in solar flares, Earth-size plasma faculae and pores oscillating at the surface of the Sun, oscillatory processes in coronal mass ejections (CMEs); theory of nonlinear oscillations in coronal current sheets and quisecent prominences.

In the past, I have studied theoretical aspects of nonlinear waves propagating in multi-fluid plasmas. Waves of different physical nature, such as Langmuir, dust- and ion-acoustic, Alfven, were considered. As a result, new types of highly nonlinear oscillations in plasma were discovered: super-nonlinear periodic and solitary (supersolitons) waves, both characterised by a non-trivial topology of their phase portraits, highly anharmonic profile shapes, extremely long periods and high amplitudes.


rzsjitullws.jpg

CFSA, PS1.22

D dot Kolotkov at warwick dot ac dot uk

+44 7425 813431