Imperial College London

Dr Jonathan P. Eastwood

Faculty of Natural SciencesDepartment of Physics

Senior Lecturer



+44 (0)20 7594 8101jonathan.eastwood Website




6M63Blackett LaboratorySouth Kensington Campus






BibTex format

author = {Ergun, RE and Goodrich, KA and Wilder, FD and Ahmadi, N and Holmes, JC and Eriksson, S and Stawarz, JE and Nakamura, R and Genestreti, KJ and Hesse, M and Burch, JL and Torbert, RB and Phan, TD and Schwartz, SJ and Eastwood, JP and Strangeway, RJ and Le, Contel O and Russell, CT and Argall, MR and Lindqvist, PA and Chen, LJ and Cassak, PA and Giles, BL and Dorelli, JC and Gershman, D and Leonard, TW and Lavraud, B and Retino, A and Matthaeus, W and Vaivads, A},
doi = {10.1002/2018GL076993},
journal = {Geophysical Research Letters},
pages = {3338--3347},
title = {Magnetic Reconnection, Turbulence, and Particle Acceleration: Observations in the Earth's Magnetotail},
url = {},
volume = {45},
year = {2018}

RIS format (EndNote, RefMan)

AB - We report observations of turbulent dissipation and particle acceleration from large-amplitude electric fields (E) associated with strong magnetic field (B) fluctuations in the Earth's plasma sheet. The turbulence occurs in a region of depleted density with anti-earthward flows followed by earthward flows suggesting ongoing magnetic reconnection. In the turbulent region, ions and electrons have a significant increase in energy, occasionally > 100 keV, and strong variation. There are numerous occurrences of |E| > 100 mV/m including occurrences of large potentials ( > 1 kV) parallel to B and occurrences with extraordinarily large J · E (J is current density). In this event, we find that the perpendicular contribution of J · E with frequencies near or below the ion cyclotron frequency (f ci ) provide the majority net positive J · E. Large-amplitude parallel E events with frequencies above f ci to several times the lower hybrid frequency provide significant dissipation and can result in energetic electron acceleration.
AU - Ergun,RE
AU - Goodrich,KA
AU - Wilder,FD
AU - Ahmadi,N
AU - Holmes,JC
AU - Eriksson,S
AU - Stawarz,JE
AU - Nakamura,R
AU - Genestreti,KJ
AU - Hesse,M
AU - Burch,JL
AU - Torbert,RB
AU - Phan,TD
AU - Schwartz,SJ
AU - Eastwood,JP
AU - Strangeway,RJ
AU - Le,Contel O
AU - Russell,CT
AU - Argall,MR
AU - Lindqvist,PA
AU - Chen,LJ
AU - Cassak,PA
AU - Giles,BL
AU - Dorelli,JC
AU - Gershman,D
AU - Leonard,TW
AU - Lavraud,B
AU - Retino,A
AU - Matthaeus,W
AU - Vaivads,A
DO - 10.1002/2018GL076993
EP - 3347
PY - 2018///
SN - 0094-8276
SP - 3338
TI - Magnetic Reconnection, Turbulence, and Particle Acceleration: Observations in the Earth's Magnetotail
T2 - Geophysical Research Letters
UR -
UR -
VL - 45
ER -