Search Publications
Relativistic electron acceleration during HILDCAA events: are precursor CIR magnetic storms important?
Hajra, Rajkumar; Tsurutani, Bruce T.; Gonzalez, Walter D. +4 more
We present a comparative study of high-intensity long-duration continuous AE activity (HILDCAA) events, both isolated and those occurring in the "recovery phase" of geomagnetic storms induced by corotating interaction regions (CIRs). The aim of this study is to determine the difference, if any, in relativistic electron acceleration and magnetosphe…
Further evidence for the role of magnetotail current shape in substorm initiation
Kubyshkina, D.; Gordeev, E.; Tsyganenko, N. +3 more
Substorm initiation still remains an unsolved problem, even though there is a consensus among most researchers that its main stages include dayside reconnection and substorm expansion. Dayside reconnection results in magnetotail flux buildup to a certain critical level, after which [or after the interplanetary magnetic field (IMF) Bz turns northwa…
Statistical investigation on the power-law behavior of magnetic fluctuations in the Venusian magnetosheath
Zhang, Tielong; Narita, Yasuhito; Schmid, Daniel +4 more
The present work aims to develop a better understanding of wave and turbulence processes in the planetary magnetosheath region. We study the plasma conditions (temperature, flow velocity, and magnetic field), the low-frequency wave properties, and the energy spectra for magnetic field fluctuations in the Venus magnetosheath. We use the magnetic fi…
Electron beam-associated symmetric electrostatic solitary waves on the separatrix of magnetic reconnection: multi-spacecraft analysis
Li, Shiyou; Zhang, Shifeng; Cai, Hong +1 more
We present an in situ evidence of electron beam-associated symmetric bipolar electrostatic solitary waves (ESWs) on the current sheet-side of the separatrix of the magnetic reconnection in the near-Earth magnetotail by multi-spacecraft observation of Cluster. Within one spin period, 42 cases of symmetric ESWs are continuously observed during 2 s b…
Strong induction effects during the substorm on 27 August 2001
Wang, C.; Pu, Z.; Mishin, V. M. +2 more
We report on strong induction effects notably contributing to the cross polar cap potential drop and the energy balance during the growth and active phases of the substorm on 27 August 2001. The inductance of the magnetosphere is found to be crucial for the energy balance and electrical features of the magnetosphere in the course of the substorm. …
The February 24, 2010 substorm: a refined view involving a pseudobreakup/expansive phase/poleward boundary intensification sequence
Russell, Christopher T.; McPherron, Robert L.; Chu, Xiangning +1 more
A substorm on February 24, 2010 was chosen for study by Connors et al. (Geophys. Res. Lett. 41:4449–4455, 2014) due to simple symmetric subauroral magnetic perturbations observed in North America. It was shown that a substorm current wedge (SCW) three-dimensional current model could represent these perturbations well, gave a reasonable representat…