Global MHD eigenmodes of the outer magnetosphere

2006 ◽  
pp. 51-72 ◽  
Author(s):  
Andrew N. Wright ◽  
Ian R. Mann
Keyword(s):  
Outer Magnetosphere

scholarly journals Geotail observation of upper band and lower band chorus elements in the outer magnetosphere

2014 ◽  
Vol 119 (6) ◽  
pp. 4694-4705 ◽  
Author(s):  
Satoshi Yagitani ◽  
Toshihiro Habagishi ◽  
Yoshiharu Omura
Keyword(s):  
Outer Magnetosphere ◽  
Lower Band

ULF waves in the outer magnetosphere of Uranus

1992 ◽  
Vol 12 (8) ◽  
pp. 43-45 ◽  
Author(s):  
C.T. Russell ◽  
R.P. Lepping
Keyword(s):  
Ulf Waves ◽  
Outer Magnetosphere

Particle acceleration in Saturn's outer magnetosphere: In memoriam Alois Schardt

1985 ◽  
Vol 90 (A9) ◽  
pp. 8539 ◽  
Author(s):  
A. W. Schardt ◽  
W. S. Kurth ◽  
R. P. Lepping ◽  
C. G. Maclennan
Keyword(s):  
Particle Acceleration ◽  
Outer Magnetosphere ◽  
In Memoriam

scholarly journals Recurrent geomagnetic storms and relativistic electron enhancements in the outer magnetosphere: ISTP coordinated measurements

1997 ◽  
Vol 102 (A7) ◽  
pp. 14141-14148 ◽  
Author(s):  
D. N. Baker ◽  
X. Li ◽  
N. Turner ◽  
J. H. Allen ◽  
L. F. Bargatze ◽  
...  
Keyword(s):  
Relativistic Electron ◽  
Geomagnetic Storms ◽  
Outer Magnetosphere

scholarly journals Possible configurations of the magnetic field in the outer magnetosphere during geomagnetic polarity reversals

2000 ◽  
Vol 18 (1) ◽  
pp. 11-27 ◽  
Author(s):  
D. M. Willis ◽  
A. C. Holder ◽  
C. J. Davis
Keyword(s):  
Magnetic Field ◽  
Spherical Cavity ◽  
Exact Equation ◽  
Outer Magnetosphere ◽  
Special Cases ◽  
Magnetospheric Configuration And Dynamics ◽  
Polarity Reversals ◽  
Field Lines ◽  
Geomagnetic Polarity ◽  
The Magnetic Field

Abstract. Possible configurations of the magnetic field in the outer magnetosphere during geomagnetic polarity reversals are investigated by considering the idealized problem of a magnetic multipole of order m and degree n located at the centre of a spherical cavity surrounded by a boundless perfect diamagnetic medium. In this illustrative idealization, the fixed spherical (magnetopause) boundary layer behaves as a perfectly conducting surface that shields the external diamagnetic medium from the compressed multipole magnetic field, which is therefore confined within the spherical cavity. For a general magnetic multipole of degree n, the non-radial components of magnetic induction just inside the magnetopause are increased by the factor {1 + [(n + 1)/n]} relative to their corresponding values in the absence of the perfectly conducting spherical magnetopause. An exact equation is derived for the magnetic field lines of an individual zonal (m = 0), or axisymmetric, magnetic multipole of arbitrary degree n located at the centre of the magnetospheric cavity. For such a zonal magnetic multipole, there are always two neutral points and n-1 neutral rings on the spherical magnetopause surface. The two neutral points are located at the poles of the spherical magnetopause. If n is even, one of the neutral rings is coincident with the equator; otherwise, the neutral rings are located symmetrically with respect to the equator. The actual existence of idealized higher-degree (n>1) axisymmetric magnetospheres would necessarily imply multiple (n + 1) magnetospheric cusps and multiple (n) ring currents. Exact equations are also derived for the magnetic field lines of an individual non-axisymmetric magnetic multipole, confined by a perfectly conducting spherical magnetopause, in two special cases; namely, a symmetric sectorial multipole (m = n) and an antisymmetric sectorial multipole (m = n-1). For both these non-axisymmetric magnetic multipoles, there exists on the spherical magnetopause surface a set of neutral points linked by a network of magnetic field lines. Novel magnetospheric processes are likely to arise from the existence of magnetic neutral lines that extend from the magnetopause to the surface of the Earth. Finally, magnetic field lines that are confined to, or perpendicular to, either special meridional planes or the equatorial plane, when the multipole is in free space, continue to be confined to, or perpendicular to, these same planes when the perfectly conducting magnetopause is present.Key words. Geomagnetism and paleomagnetism (reversals-process, time scale, magnetostratigraphy) · Magnetospheric physics (magnetopause, cusp, and boundary layers; magnetospheric configuration and dynamics)

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