Search Publications
Multispacecraft observation of electron pitch angle distributions in magnetotail reconnection
Wang, Shui; Huang, Can; Lu, Quanming +1 more
In this paper, we present Cluster observations of a magnetotail reconnection event without the presence of an obvious guide magnetic field and analyze electron pitch angle distributions in the vicinity of the X line and the outflow region, respectively. In the vicinity of the X line, at lower energies the distributions are highly anisotropic (fiel…
A case study of EMIC wave-associated He+ energization in the outer magnetosphere: Cluster and Double Star 1 observations
Sauvaud, J. -A.; Klecker, B.; Kistler, L. M. +3 more
On December 4, 2004, the COmposition and DIstribution Function (CODIF) Analyzer on board the Cluster spacecraft observed a prolonged He+ energization event from 06:00 to 10:30 UT. In this paper, we perform a case study of the event by using in situ plasma and magnetic field measurements from the Cluster and Double Star Program (DSP) Tan…
X line distribution determined from earthward and tailward convective bursty flows in the central plasma sheet
Dunlop, M. W.; Baumjohann, W.; Reme, H. +5 more
With TC-1, Cluster, and Geotail observations, we statistically analyzed earthward and tailward convective bursty flows (CBFs) from 7 to 31 RE to understand the distribution of X lines in the magnetotail. We also analyzed the effect of the solar wind condition on the X lines with ACE satellite observations. The statistical results show t…
Comprehensive ground-based and in situ observations of substorm expansion phase onset
Zhang, T. L.; Fazakerley, A. N.; Volwerk, M. +8 more
In this paper, we present comprehensive ground-based and space-based in situ geosynchronous observations of a substorm expansion phase onset on 1 October 2005. The Double Star TC-2 and GOES-12 spacecraft were both located within the substorm current wedge during the substorm expansion phase onset, which occurred over the Canadian sector. We find t…
Moderate geomagnetic storm (21-22 January 2005) triggered by an outstanding coronal mass ejection viewed via energetic neutral atoms
Barabash, Stas; McKenna-Lawlor, Susan; Dandouras, Iannis +7 more
An outstanding flare on 20 January 2005 was accompanied by a coronal mass ejection which arrived at the magnetopause at ∼1712 UT, 21 January, and produced a strong compression-pressure pulse. Enhanced magnetospheric activity was stimulated. The associated development between <1800 UT and >02.19 UT on 21-22 January, 2005 of a ring current dis…
Observations and simulations of a highly structured plasma sheet during northward IMF
El-Alaoui, Mostafa; Ashour-Abdalla, Maha; Walker, Raymond +2 more
We investigated a highly structured plasma sheet populated by counterstreaming beams observed by the Cluster and Double Star spacecraft on October 10, 2005, during an extended interval of northward interplanetary magnetic field (IMF). We used Wind spacecraft observations as input into our global magnetohydrodynamic (MHD) simulation of the event, a…
Simultaneous FAST and Double Star TC1 observations of broadband electrons during a storm time substorm
Dandouras, I.; Fazakerley, A. N.; Le Contel, O. +13 more
Broadband electrons (BBEs) exhibit remarkable electron flux enhancements over a broad energy range (0.03-30 keV) near the equatorward edge of the auroral oval during geomagnetic storms. Here, we report a BBE event observed by the Fast Auroral Snapshot (FAST) satellite at 1355-1359 UT, ∼61°-66° invariant latitudes, ∼0600 magnetic local time (MLT), …
Comparisons between ion distributions retrieved from ENA images of the ring current and contemporaneous, multipoint ion measurements recorded in situ during the major magnetic storm of 15 May 2005
Barabash, S.; Liu, Z. X.; Brandt, P. C. +5 more
The Neutral Atom Detector Unit (NUADU) aboard the TC-2 spacecraft recorded energetic neutral atom (ENA) image data for >3 h during part of the main and recovery phases of a major magnetic storm on 15 May 2005. A custom designed, constrained linear inversion method was applied to retrieve ring current ion distributions in the ENA records out to …