Imperial College London


Faculty of Natural SciencesDepartment of Physics

Royal Society University Research Fellow



+44 (0)20 7594 7904h.hietala CV




6M58Blackett LaboratorySouth Kensington Campus





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

Liu TZ, Hietala H, Angelopoulos V, 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

Palmroth M, Praks J, Vainio R, et al., 2019, FORESAIL-1 CubeSat Mission to Measure Radiation Belt Losses and Demonstrate Deorbiting, Journal of Geophysical Research-space Physics, Vol:124, Pages:5783-5799

Kilpua EKJ, Turner DL, Jaynes AN, 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

Archer MO, Hietala H, Hartinger MD, et al., 2019, Direct observations of a surface eigenmode of the dayside magnetopause, Nature Communications, Vol:10, ISSN:2041-1723

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