Search Publications
Statistical Investigation of the Frequency Dependence of the Chorus Source Mechanism of Plasmaspheric Hiss
Shen, Xiao-Chen; Meredith, Nigel P.; Horne, Richard B. +2 more
We use data from eight satellites to statistically examine the role of chorus as a potential source of plasmaspheric hiss. We find that the strong equatorial (|λm| < 6°) chorus wave power in the frequency range 50 < f < 200 Hz does not extend to high latitudes in any magnetic local time sector and is unlikely to be the source o…
Global Model of Whistler Mode Chorus in the Near-Equatorial Region (|λm|< 18°)
Shen, Xiao-Chen; Meredith, Nigel P.; Horne, Richard B. +2 more
We extend our database of whistler mode chorus, based on data from seven satellites, by including ∼3 years of data from Radiation Belt Storm Probes (RBSP)-A and RBSP-B and an additional ∼6 years of data from Time History of Events and Macroscale Interactions during Substorms (THEMIS)-A, THEMIS-D, and THEMIS-E. The new database allows us to probe t…
The effect of diamagnetic drift on motion of the dayside magnetopause reconnection line
Fear, R. C.; Marcucci, M. F.; Trenchi, L.
Magnetic reconnection at the magnetopause occurs with a large density asymmetry and for a large range of magnetic shears. In these conditions, a motion of the X line has been predicted in the direction of the electron diamagnetic drift. When this motion is super Alfvenic, reconnection should be suppressed. We analysed a large data set of Double St…
Magnetic topologies of an in vivo FTE observed by Double Star/TC-1 at Earth's magnetopause
Dunlop, M.; Raeder, J.; Zhong, J. +5 more
transfer events (FTEs) are magnetic flux ropes formed at planetary magnetopauses (MPs). Although evidence suggests that FTEs form through time-dependent magnetic reconnection, details of that process and 3D structure of the flux ropes remain largely unclear. This letter presents Double Star/TC-1 data of an FTE occurred on 7 April 2004 which show t…
Conjunction of anti-parallel and component reconnection at the dayside MP: Cluster and Double Star coordinated observation on 6 April 2004
Wei, Y.; Dunlop, M. W.; Bogdanova, Y. V. +7 more
Previous theoretical and simulation studies have suggested that the anti-parallel and component reconnection can occur simultaneously on the dayside magnetopause. Certain observations have also been reported to support global conjunct pattern of magnetic reconnection. Here, we show direct evidence for the conjunction of anti-parallel and component…
Recent in-situ observations of magnetic reconnection in near-Earth space
Paschmann, Götz
The paper presents a brief review of recent in-situ observations of reconnection in space, with emphasis on results pertaining to the question of anti-parallel versus component reconnection, the implied spatial and temporal scales, the location of the reconnection sites, particle acceleration, reconnection rates, the dependence on plasma β, and th…
Multi-point observations of the inner boundary of the plasma sheet during geomagnetic disturbances
Dandouras, I.; Glassmeier, K. -H.; Nakamura, R. +6 more
We report on the THEMIS and Double Star TC-1 observations at the geocentric distances of 3 < R < 8 R E during substorms on March 23, 2007. THEMIS crossed the inner boundary of the equatorial dusk-side plasma in the string-of-pearls configuration, allowing the dynamics of particle populations to be traced within time ranges from h…
Global view of dayside magnetic reconnection with the dusk-dawn IMF orientation: A statistical study for Double Star and Cluster data
Lucek, E.; Dunlop, M. W.; Rème, H. +14 more
Double Star/TC-1 and Cluster data show that both component reconnection and anti-parallel reconnection occur at the magnetopause when the interplanetary magnetic field (IMF) is predominantly dawnward. The occurrence of these different features under these very similar IMF conditions are further confirmed by a statistical study of 290 fast flows me…
Flow burst-induced Kelvin-Helmholtz waves in the terrestrial magnetotail
Zhang, T. L.; Glassmeier, K. -H.; Lucek, E. +7 more
The Kelvin-Helmholtz instability (KHI) on the boundary of a flow channel in the Earth's plasma sheet is investigated using Cluster and Double Star TC1 data. It is shown that when Cluster moves into the flow channel the magnetometer measures strong oscillations of the magnetic field, that increase as the spacecraft move further into the flow channe…
TC-1 observations of flux pileup and dipolarization-associated expansion in the near-Earth magnetotail during substorms
Escoubet, C. P.; Dandouras, I.; Zhang, H. +16 more
Fifty-three substorms measured by Double Star/TC-1 in the near-Earth magnetotail from July to October, 2004 are studied. The main features of these events are: (a) Magnetic flux pileup characterized by continuous enhancement of B z is observed, which starts almost simultaneously with aurora breakup within 1-3 minutes, indicating that …