Immanuel Christopher Jebaraj defended successfully his PhD thesis on "Tracking heliospheric shock waves by radio triangulation and modelling" on 2021 December 10. The work was co-promoted by Prof. Jasmina Magdalenić (ROB & KULeuven) and Prof. Stefaan Poedts (KULeuven).
Abstract
The work presented in this PhD thesis brings important new insights on the association of the heliospheric shock waves and their drivers, coronal mass ejections (CMEs). New observational techniques from the Royal Observatory of Belgium (ROB) radio astronomy group are combined with the state-of-the-art numerical modelling from KU Leuven and University of Helsinki. The radio triangulation technique is employed to determine the trajectory of interplanetary shocks and shock wave characteristics. The combination of the observational results provided an input in the recently developed heliospheric simulation code EUHFORIA (EUropean Heliospheric FORecasting Information Asset) to model the CME. The CME-driven shock wave is reconstructed using the CORSHOCK (Coronal Shocks) model which models shock propagation using magnetohydrodynamics (MHD). That allows us to study evolution of shock wave parameters and their association with radio emission.