Results 51 to 60 of about 2,184,733 (309)

Conjugate observations of quasi‐periodic emissions by Cluster and DEMETER spacecraft [PDF]

Journal of Geophysical Research: Space Physics, 2013
AbstractQuasi‐periodic (QP) emissions are electromagnetic emissions at frequencies of about 0.5–4 kHz that are characterized by a periodic time modulation of the wave intensity. Typical periods of this modulation are on the order of minutes. We present a case study of a large‐scale long‐lasting QP event observed simultaneously on board the DEMETER ...
Michel Parrot, M. Hayosh, Jolene S. Pickett, N. Cornilleau-Wehrlin, František Němec, Ondrej Santolik, Ondrej Santolik   +6 more
openaire   +5 more sources

Accuracy of multi-point boundary crossing time analysis [PDF]

Annales Geophysicae, 2011
Recent multi-spacecraft studies of solar wind discontinuity crossings using the timing (boundary plane triangulation) method gave boundary parameter estimates that are significantly different from those of the well-established single-spacecraft ...
J. Vogt, S. Haaland, S. Haaland, G. Paschmann   +3 more
doaj   +1 more source

Cluster magnetotail observations of a tailward-travelling plasmoid at substorm expansion phase onset and field aligned currents in the plasma sheet boundary layer [PDF]

Annales Geophysicae, 2005
We present data from both ground- and space-based instruments for a substorm event which occurred on 5 October 2002, with an expansion phase onset time of 02:50 UT determined from the ground magnetometer data.
N. C. Draper, M. Lester, S. W. H. Cowley, J. A. Wild, S. E. Milan, G. Provan, A. Grocott, A. N. Fazakerley, A. Lahiff, J. A. Davies, J.-M. Bosqued, J. P. Dewhurst, R. Nakamura, C. J. Owen, J. Waterman, M. G. Henderson, H. J. Singer, E. Donovan   +17 more
doaj   +1 more source

Magnetopause current as seen by Cluster [PDF]

Annales Geophysicae, 2005
The four-spacecraft, magnetic field measurements on Cluster can be combined to produce an accurate determination of the electric current in the magnetopause boundary during stable magnetopause crossings.
M. W. Dunlop, M. W. Dunlop, A. Balogh
doaj   +1 more source

Methods of Orbit Clustering of Serviced Spacecraft

System technologies, 2019
When planning orbital service operations, it is important to rationally divide a set of orbits serviced by a spacecraft into subsets (clusters) of orbits. This article proposes a technique for clustering the orbits of serviced spacecraft in the event of their servicing by a reusable service spacecraft with an electric rocket low thrust engine.
Anatolii Petrovych Alpatov, Yurii Mykhailovych Holdshtein   +1 more
openaire   +2 more sources

Near-simultaneous magnetotail flux rope observations with Cluster and Double Star [PDF]

Annales Geophysicae, 2007
We present observations of three magnetic flux ropes in the tail of the Earth's magnetosphere on 7 August 2004 by the Cluster and Double Star TC-1 spacecraft.
A. P. Walsh, A. N. Fazakerley, R. J. Wilson, R. J. Wilson, I. V. Alexeev, P. D. Henderson, C. J. Owen, E. Lucek, C. Carr, I. Dandouras   +9 more
doaj   +1 more source

Cluster electron observations of the separatrix layer during traveling compression regions [PDF]

, 2005
[ 1] We present Cluster 4-point observations of electrons during traveling compression regions ( TCRs) on 19 September 2001. The electron and \B\ signatures vary with distance from the plasma sheet, confirming that transient plasma sheet bulges propagate
Balogh, A, Dunlop, MW, Fazakerley, AN, Owen, CJ, Slavin, JA   +4 more
core   +1 more source

The Cluster spacecraft's view of the motion of the high-latitude magnetopause [PDF]

Annales Geophysicae
Abstract. The boundary between the interplanetary magnetic field and the terrestrial magnetic field is the magnetopause. This magnetopause is influenced by dynamic changes in the solar wind, that is different solar wind conditions lead to a change in the shape and location of the magnetopause.
N. Grimmich, F. Plaschke, B. Grison, F. Prencipe, C. P. Escoubet, M. O. Archer, O. D. Constantinescu, O. D. Constantinescu, S. Haaland, S. Haaland, S. Haaland, R. Nakamura, D. G. Sibeck, F. Darrouzet, M. Hayosh, R. Maggiolo   +15 more
openaire   +6 more sources

Four-spacecraft determination of magnetopause orientation, motion and thickness: comparison with results from single-spacecraft methods [PDF]

Annales Geophysicae, 2004
In this paper, we use Cluster data from one magnetopause event on 5 July 2001 to compare predictions from various methods for determination of the velocity, orientation, and thickness of the magnetopause current layer. We employ established as well as
S. E. Haaland, S. E. Haaland, B. U. Ö. Sonnerup, M. W. Dunlop, A. Balogh, E. Georgescu, H. Hasegawa, B. Klecker, G. Paschmann, G. Paschmann, P. Puhl-Quinn, H. Rème, H. Vaith, A. Vaivads   +13 more
doaj   +1 more source

Coordinated Cluster/Double Star observations of dayside reconnection signatures [PDF]

Annales Geophysicae, 2005
The recent launch of the equatorial spacecraft of the Double Star mission, TC-1, has provided an unprecedented opportunity to monitor the southern hemisphere dayside magnetopause boundary layer in conjunction with northern hemisphere observations by ...
M. W. Dunlop, M. W. Dunlop, M. G. G. T. Taylor, J. A. Davies, C. J. Owen, F. Pitout, A. N. Fazakerley, Z. Pu, H. Laakso, Y. V. Bogdanova, Q.-G. Zong, C. Shen, K. Nykyri, B. Lavraud, S. E. Milan, T. D. Phan, H. Rème, C. P. Escoubet, C. M. Carr, P. Cargill, M. Lockwood, B. Sonnerup   +21 more
doaj   +1 more source