Search Publications
First results obtained by the Cluster STAFF experiment
Maksimovic, M.; Chust, T.; de Conchy, Y. +20 more
The Spatio Temporal Analysis of Field Fluctuations (STAFF) experiment is one of the five experiments, which constitute the Cluster Wave Experiment Consortium (WEC). STAFF consists of a three-axis search coil magnetometer to measure magnetic fluctuations at frequencies up to 4 kHz, a waveform unit (up to either 10 Hz or 180 Hz) and a Spectrum Analy…
Source location of chorus emissions observed by Cluster
Maksimovic, M.; Parrot, M.; Cornilleau-Wehrlin, N. +2 more
One of the objectives of the Cluster mission is to study sources of various electromagnetic waves using the four satellites. This paper describes the methods we have applied to data recorded from the STAFF spectrum analyser. This instrument provides the cross spectral matrix of three magnetic and two electric field components. This spectral matrix…
Ulysses COSPIN observations of cosmic rays and solar energetic particles from the South Pole to the North Pole of the Sun during solar maximum
Balogh, A.; Kunow, H.; Posner, A. +10 more
In 2000-2001 Ulysses passed from the south to the north polar regions of the Sun in the inner heliosphere, providing a snapshot of the latitudinal structure of cosmic ray modulation and solar energetic particle populations during a period near solar maximum. Observations from the COSPIN suite of energetic charged particle telescopes show that lati…
Multi-scale magnetic field intermittence in the plasma sheet
Balogh, A.; Zhang, T. L.; Klecker, B. +9 more
This paper demonstrates that intermittent magnetic field fluctuations in the plasma sheet exhibit transitory, localized, and multi-scale features. We propose a multifractal-based algorithm, which quantifies intermittence on the basis of the statistical distribution of the strength of burstiness , estimated within a sliding window. Interesting mult…
On the existence of Alfvén waves in the terrestrial foreshock
Balogh, A.; Dandouras, I.; Eastwood, J. P. +2 more
The terrestrial foreshock is characterised by the existence of large amplitude ultra low frequency waves. The majority of such waves are observed to be left-handed in the spacecraft frame, but are in fact intrinsically right-handed and have been identified as fast-magnetosonic waves. More rarely observed are waves that are right-handed in the spac…
Evidence for impulsive solar wind plasma penetration through the dayside magnetopause
Lundin, R.; Sauvaud, J. -A.; Balogh, A. +15 more
This paper presents in situ observational evidence from the Cluster Ion Spectrometer (CIS) on Cluster of injected solar wind "plasma clouds" protruding into the day-side high-latitude magnetopause. The plasma clouds, presumably injected by a transient process through the day-side magnetopause, show characteristics implying a generation mechanism d…
Magnetospherically reflected chorus waves revealed by ray tracing with CLUSTER data
Maksimovic, M.; Santolík, O.; Parrot, M. +2 more
This paper is related to the propagation characteristics of a chorus emission recorded simultaneously by the 4 satellites of the CLUSTER mission on 29 October 2001 between 01:00 and 05:00 UT. During this day, the spacecraft (SC) 1, 2, and 4 are relatively close to each other but SC3 has been delayed by half an hour. We use the data recorded aboard…
Coordinated interhemispheric SuperDARN radar observations of the ionospheric response to flux transfer events observed by the Cluster spacecraft at the high-latitude magnetopause
Balogh, A.; Davies, J. A.; Wild, J. A. +11 more
At 10:00 UT on 14 February 2001, the quartet of ESA Cluster spacecraft were approaching the Northern Hemisphere high-latitude magnetopause in the post-noon sector on an outbound trajectory. At this time, the interplanetary magnetic field incident upon the dayside magnetopause was oriented southward and duskward (BZ negative, BY positive), having t…
Imprints from the solar cycle on the helium atom and helium pickup ion distributions
Fahr, H. J.; Bzowski, M.; Rucinski, D.
Neutral interstellar helium atoms penetrate into the solar system almost unaffected by gas-plasma interactions in the heliospheric interface region, and thus can be considered as carriers of original information on the basic parameters (like density, temperature, bulk velocity) of the Very Local Interstellar Medium (VLISM). Such information can no…
Delay in solar energetic particle onsets at high heliographic latitudes
Balogh, A.; Krucker, S.; Dalla, S. +9 more
Ulysses observations have shown that solar energetic particles (SEPs) can easily reach high heliographic latitudes. To obtain information on the release and propagation of SEPs prior to their arrival at Ulysses, we analyse the onsets of nine large high-latitude particle events. We measure the onset times in several energy channels, and plot them v…