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 = {Hesse, M and Norgren, C and Tenfjord, P and Burch, JL and Liu, YH and Chen, LJ and Bessho, N and Wang, S and Nakamura, R and Eastwood, JP and Hoshino, M and Torbert, RB and Ergun, RE},
doi = {10.1063/1.5054100},
journal = {Physics of Plasmas},
title = {On the role of separatrix instabilities in heating the reconnection outflow region},
url = {},
volume = {25},
year = {2018}

RIS format (EndNote, RefMan)

AB - A study of the role microinstabilities at the reconnection separatrix can play in heating the electrons during the transition from inflow to outflow is being presented. We find that very strong flow shears at the separatrix layer lead to counterstreaming electron distributions in the region around the separatrix, which become unstable to a beam-type instability. Similar to what has been seen in earlier research, the ensuing instability leads to the formation of propagating electrostatic solitons. We show here that this region of strong electrostatic turbulence is the predominant electron heating site when transiting from inflow to outflow. The heating is the result of heating generated by electrostatic turbulence driven by overlapping beams, and its macroscopic effect is a quasi-viscous contribution to the overall electron energy balance. We suggest that instabilities at the separatrix can play a key role in the overall electron energy balance in magnetic reconnection.
AU - Hesse,M
AU - Norgren,C
AU - Tenfjord,P
AU - Burch,JL
AU - Liu,YH
AU - Chen,LJ
AU - Bessho,N
AU - Wang,S
AU - Nakamura,R
AU - Eastwood,JP
AU - Hoshino,M
AU - Torbert,RB
AU - Ergun,RE
DO - 10.1063/1.5054100
PY - 2018///
SN - 1070-664X
TI - On the role of separatrix instabilities in heating the reconnection outflow region
T2 - Physics of Plasmas
UR -
UR -
VL - 25
ER -