Andrei Runov

TL;DR: Results demonstrate that substorms are likely initiated by tail reconnection, and are reported on simultaneous measurements in the magnetotail at multiple distances, at the time of substorm onset.

TL;DR: In this paper, a dipolarization front was detected in the central plasma sheet sequentially at X = -20.1 R E (THEMIS P1 probe), at x = -16.7 R E(P2 probe), and at X= -11.0 RE (P3/P4 pair), suggesting its earthward propagation as a coherent structure over a distance more than 10 R E at a velocity of 300 km/s.

TL;DR: In this paper, a flow burst was associated with a clear dipolarization ahead of the high-speed part of the predominantly Earthward directed flow, and the authors found that a ∼2000 km thick dipolarisation front moves Earthward and dawnward with a speed of ∼77 km/s.

TL;DR: In this paper, a superposed epoch analysis of dipolarization front crossings and their characteristic gradient scales was performed, revealing a rapid 50% decrease in plasma density and ion pressure, a factor of 2-3 increase in high-energy (30-200 keV) electron flux and electron temperature, and transient enhancements of ∼5 mV/m in duskward and earthward electric field components.

TL;DR: In this paper, the spatial gradient of high-speed flows in the midtail plasma sheet is determined using multipoint observations from the Cluster spacecraft along the "dawn-dusk" direction (perpendicular to the main flow and in the plane of the tail current sheet) and along the north-south direction.