Imperial College London


Faculty of Natural SciencesDepartment of Physics

Visiting Researcher



h.hietala CV




6M58Blackett LaboratorySouth Kensington Campus





Heli Hietala studies 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 co-leader of the International Space Science Institute (ISSI) International Team Jets Downstream of Collisionless Shocks (2015-2017), and the co-I of the global hybrid-Vlasov simulation model Vlasiator.

She was a Young Scientist in the ISSI team Ion and Electron Bulk Heating by Magnetic Reconnection (2013-2015).

She is currently an Assistant Researcher in the Experimental Space Physics Group, Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles.



Liu TZ, Lu S, Angelopoulos V, et al., Fermi acceleration of electrons inside foreshock transient cores, Journal of Geophysical Research: Space Physics, ISSN:2169-9380

Artemyev AV, Angelopoulos V, Hietala H, et al., 2017, Ion density and temperature profiles along (X-GSM) and across (Z(GSM)) the magnetotail as observed by THEMIS, Geotail, and ARTEMIS, Journal of Geophysical Research-space Physics, Vol:122, ISSN:2169-9380, Pages:1590-1599

Dorfman S, Hietala H, Astfalk P, et al., 2017, Growth rate measurement of ULF waves in the ion foreshock, Geophysical Research Letters, Vol:44, ISSN:0094-8276, Pages:2120-2128

Han D-S, Hietala H, Chen X-C, et al., 2017, Observational properties of dayside throat aurora and implications on the possible generation mechanisms, Journal of Geophysical Research-space Physics, Vol:122, ISSN:2169-9380, Pages:1853-1870

Hietala H, Artemyev AV, Angelopoulos V, 2017, Ion dynamics in magnetotail reconnection in the presence of density asymmetry, Journal of Geophysical Research-space Physics, Vol:122, ISSN:2169-9380, Pages:2010-2023

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