Journal ArticleDOI
Modeling the Earth's magnetospheric magnetic field confined within a realistic magnetopause
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TLDR
In this paper, the authors describe a new approach to the problem of fitting the magnetosphereic magnetic field to spacecraft data, based on fits to a large number of observed crossing (allowing a parametrization by the solar wind pressure).Abstract:
Empirical data-based models of the magnetosphereic magnetic field have been widely used during recent years. However, the existing models (Tsyganenko, 1987, 1989a) have three serious deficiencies: (1) an unstable de facto magnetopause, (2) a crude parametrization by the K(sub p) index, and (3) inaccuracies in the equatorial magnetotail B(sub z) values. This paper describes a new approach to the problem; the essential new features are (1) a realistic shape and size of the magnetopause, based on fits to a large number of observed crossing (allowing a parametrization by the solar wind pressure), (2) fully controlled shielding of the magnetic field produced by all magnetospheric current systems, (3) new flexible representations for the tail and ring currents, and (4) a new directional criterion for fitting the model field to spacecraft data, providing improved accuracy for field line mapping. Results are presented from initial efforts to create models assembled from these modules and calibrated against spacecraft data sets.read more
Citations
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Tail reconnection triggering substorm onset.
Vassilis Angelopoulos,James P. McFadden,Davin Larson,C. W. Carlson,Stephen B. Mende,Harald U. Frey,Tai Phan,David G. Sibeck,Karl-Heinz Glassmeier,Uli Auster,Eric Donovan,Ian R. Mann,I. Jonathan Rae,Christopher T. Russell,Andrei Runov,Xu-Zhi Zhou,Larry Kepko +16 more
TL;DR: Results demonstrate that substorms are likely initiated by tail reconnection, and are reported on simultaneous measurements in the magnetotail at multiple distances, at the time of substorm onset.
Journal ArticleDOI
Modeling the global magnetic field of the large‐scale Birkeland current systems
TL;DR: In this article, a tilt-dependent model of the Birkeland current sheets, based on the formalism of Euler potentials, was developed for representing the global distribution of the average magnetic field produced by the region 1 and 2 BIC systems.
Journal ArticleDOI
THEMIS observations of an earthward-propagating dipolarization front
Andrei Runov,Vassilis Angelopoulos,M. I. Sitnov,V. A. Sergeev,John W. Bonnell,James P. McFadden,Davin Larson,Karl-Heinz Glassmeier,Uli Auster +8 more
TL;DR: In this paper, a dipolarization front was detected in the central plasma sheet sequentially at X = -20.1 R E (THEMIS P1 probe), at x = -16.7 R E(P2 probe), and at X= -11.0 RE (P3/P4 pair), suggesting its earthward propagation as a coherent structure over a distance more than 10 R E at a velocity of 300 km/s.
Journal ArticleDOI
A model of the near magnetosphere with a dawn-dusk asymmetry 1. Mathematical structure
TL;DR: In this paper, a new empirical magnetic field model has been developed, representing the variable configuration of the inner and near magnetosphere for different interplanetary conditions and the ground disturbance levels.
Journal ArticleDOI
The Alpha Magnetic Spectrometer (AMS)on the International Space Station : Part I - results from the test flight on the space shuttle
M. Aguilar,J. Alcaraz,Behcet Alpat,G. Ambrosi,G. Ambrosi,H. Anderhub,L. Ao,A. Arefiev,Philipp Azzarello,E. Babucci,L. Baldini,L. Baldini,M. Basile,D. Barancourt,F. Barao,G. Barbier,G.P. Barreira,Roberto Battiston,R. Becker,U. Becker,L. Bellagamba,P. Bene,J. Berdugo,P. Berges,B. Bertucci,Adrian Biland,S. Bizzaglia,S. Blasko,G. Boella,M. J. Boschini,M. Bourquin,L. Brocco,G. Bruni,M. Buenerd,J. D. Burger,W. J. Burger,X. D. Cai,C. Camps,P. Cannarsa,M. Capell,D. Casadei,J. Casaus,G. Castellini,Claudia Cecchi,Y. H. Chang,H.F. Chen,H. S. Chen,Z.G. Chen,N.A. Chernoplekov,Tzihong Chiueh,Kyung-Suk Cho,M.J. Choi,Y.Y. Choi,Y.L. Chuang,Federico Cindolo,V. Commichau,A. Contin,E. Cortina-Gil,Markus Cristinziani,J. P. Da Cunha,T. S. Dai,C. Delgado,J.D. Deus,N. Dinu,L. Djambazov,I. D'Antone,Z.R. Dong,P. Emonet,J. Engelberg,F. J. Eppling,T. Eronen,G. Esposito,P. Extermann,J. Favier,E. Fiandrini,Peter H. Fisher,G. Fluegge,N. Fouque,Yu. Galaktionov,Yu. Galaktionov,Massimo Gervasi,P. Giusti,D. Grandi,O. Grimm,W.Q. Gu,K. Hangarter,A. Hasan,V. Hermel,H. Hofer,M. A. Huang,W. Hungerford,Maria Ionica,R. Ionica,M. Jongmanns,K. Karlamaa,Waclaw Karpinski,G. Kenney,Jose Maria Kenny,D.H. Kim,Gui Nyun Kim,K.S. Kim,M.Y. Kim,A. Klimentov,A. Klimentov,R. Kossakowski,V. Koutsenko,V. Koutsenko,M. Kraber,G. Laborie,Timo Laitinen,G. Lamanna,E. Lanciotti,G. Laurenti,A. Lebedev,C. Lechanoine-Leluc,M.W. Lee,S.C. Lee,Giuseppe Levi,P. Levtchenko,C.L. Liu,Hengchang Liu,I. Lopes,G. Lu,Y.S. Lu,K. Luebelsmeyer,D. Luckey,Werner Lustermann,C. Maña,Anselmo Margotti,F. Mayet,R. R. McNeil,B. Meillon,Mauro Menichelli,A. Mihul,A. Mourao,Ari Mujunen,F. Palmonari,A. Papi,H.B. Park,W.H. Park,M. Pauluzzi,Felicitas Pauss,E. Perrin,A. Pesci,A. Pevsner,M. Pimenta,V. Plyaskin,V. Pojidaev,M. Pohl,V. Postolache,N. Produit,P. G. Rancoita,D. Rapin,Frank Raupach,D. Ren,Zhuoxiang Ren,M. Ribordy,J.P. Richeux,E. Riihonen,J. Ritakari,S. Ro,U. Roser,C. Rossin,Roald Z. Sagdeev,D. Santos,G. Sartorelli,C. Sbarra,Stefan Schael,A. Schultz von Dratzig,G. Schwering,G. Scolieri,Eun-Suk Seo,Jungwook Shin,V. Shoutko,E. Shoumilov,R. Siedling,Dong-Chul Son,Tao Song,M. Steuer,G.S. Sun,H. Suter,X.W. Tang,S.C.C. Ting,Samuel C.C. Ting,Merja Tornikoski,J. J. Torsti,J. Trümper,J. Ulbricht,S. Urpo,Eino Valtonen,J. Vandenhirtz,F. Velcea,E. P. Velikhov,B. Verlaat,I. Vetlitsky,F. Vezzu,J. P. Vialle,G. Viertel,D. Vité,H. von Gunten,S. Waldmeier Wicki,W. Wallraff,B.C. Wang,Jian Wang,Yun Wang,K. Wiik,Ciaran Williams,S. X. Wu,S. X. Wu,P.C. Xia,J.L. Yan,L.G. Yan,Changgen Yang,J. Yang,Mao-Zhi Yang,S.W. Ye,P. Yeh,Zhenghao Xu,Hao Zhang,Zhidong Zhang,Dawei Zhao,Guohuai Zhu,W.Z. Zhu,H. L. Zhuang,Antonino Zichichi,B. Zimmermann,Paolo Zuccon +226 more
TL;DR: The Alpha Magnetic Spectrometer (AMS) was flown on the space shuttle Discovery during flight STS-91 (June 1998) in a 51.7° orbit at altitudes between 320 and 390 km as discussed by the authors.
References
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Journal ArticleDOI
A magnetospheric magnetic field model with a warped tail current sheet
TL;DR: In this article, an improved quantitative representation of the magnetic field in the geomagnetosphere is developed, taking into account the effect of warping the tail current sheet in two dimensions due to the geodipole tilt, as well as spatial variations of the current sheet thickness along the Sun-Earth and dawn-dusk directions.
Journal ArticleDOI
Average and unusual locations of the Earth's magnetopause and bow shock
TL;DR: The average and unusual locations of magnetopause and bow shock positions observed by IMP spacecraft were analyzed in this paper, showing that the bow shock position is unusual for the Earth's magnetic field.
Journal ArticleDOI
Global quantitative models of the geomagnetic-field in the cislunar magnetosphere for different disturbance levels
TL;DR: In this paper, Tsyganenko and Usmanov's model was further developed, using IMP -A, C, D, E, F, G, H, I, J and HEOS -1, -2 spacecraft measurements made during 1966-1980.
Journal ArticleDOI
Solar wind control of the magnetopause shape, location, and motion
TL;DR: In this paper, the authors verified the pressure balance relationship between the solar wind dynamic pressure and the location of the subsolar magnetopause by assembling a data set of 1821 magnetopsause crossings.
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