Heli Hietala studies structure formation and particle energization in shocks, magnetic reconnection, and radiation belts using multi-spacecraft observations and modelling.
She is the lead-proposer and co-chair of the GEM Focus Group Dayside kinetic processes in global solar wind - magnetosphere interaction (2016-2020).
She's also the leader of an International Space Science Institute (ISSI) International Team on Foreshocks Across the Heliosphere: System Specific or Universal Physical Processes? (2019-2020).
She was the co-leader of the ISSI team on Jets Downstream of Collisionless Shocks (2015-2017), and a Young Scientist in the ISSI team Ion and Electron Bulk Heating by Magnetic Reconnection (2013-2015).
Before joining Imperial as a URF, she was a Junior Group Leader at the Space Research Laboratory, University of Turku, Finland, and an Associate Researcher in the Experimental Space Physics Group, Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles.
Vuorinen L, Hietala H, Plaschke F, 2019, Jets in the magnetosheath: IMF control of where they occur, Annales Geophysicae, Vol:37, ISSN:0992-7689, Pages:689-697
et al., 2019, THEMIS Observations of Particle Acceleration by a Magnetosheath Jet-Driven Bow Wave, Geophysical Research Letters, Vol:46, ISSN:0094-8276, Pages:7929-7936
et al., On the alignment of velocity and magnetic fields within magnetosheath jets, Annales Geophysicae Discussions, Pages:1-13
Vuorinen L, Hietala H, Plaschke F, Jets in the Magnetosheath: IMF Control of Where They Occur, Annales Geophysicae Discussions, Pages:1-12
et al., 2019, Outer Van Allen Radiation Belt Response to Interacting Interplanetary Coronal Mass Ejectionsy, Journal of Geophysical Research-space Physics, Vol:124, ISSN:2169-9380, Pages:1927-1947