Results 191 to 200 of about 10,563 (231)

Magnetospheric current sheets

Radio Science, 1973
A review is presented of theories and observations of current sheets in the magnetosphere, emphasizing the magnetopause and tail current sheets.Theoretical models of the magnetopause current sheet can be divided into two types: specular reflection and fluid models containing no external magnetic field, and models with an interplanetary/magnetosheath ...
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Birkeland Currents in the Earth’s Magnetosphere

Astrophysics and Space Science, 1988
As a result of his polar expeditions at the beginning of this century, Kristian Birkeland determined that intense ionospheric currents were associated with the aurora. Birkeland suggested that these currents originated far from the Earth and that they flowed ointo and away from the polar atmosphere along the geomagnetic field lines.
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Inner magnetosphere currents and their role in the magnetosphere dynamics

Physics and Chemistry of the Earth, Part C: Solar, Terrestrial & Planetary Science, 2000
Abstract The role of inner magnetosphere currents in the magnetopause dynamics is analyzed. The change of magnetopause position under the influence of inner magnetosphere magnetic field sources is analyzed. It is shown that the main source of such change may be an effective eastward ring current flowing near the inner edge of the plasma sheet.
E.E. Antonova, N.Yu. Ganushkina
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Currents in Mercury's magnetosphere

2000
Electric currents play an important role in the terrestrial magnetosphere as an agent to couple different plasma regimes and to mediate stresses. Much effort has been put into unravelling the structure of the current system of our planets magnetosphere.
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Magnetospheric Currents during Substorms

1979
One of the most important aspects of the magnetospheric substorm is that during it there occurs a large-scale change of the distribution of electric currents in the magnetosphere and the ionosphere. In Sections 5.5 and 6.5, it was suggested that the main cause of this change is the disruption of the cross-tail current in a limited region in the ...
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New model of magnetospheric current‐voltage relationship

Journal of Geophysical Research: Space Physics, 1996
A new model based on the generalized Lorentzian velocity distribution function (VDF) is used to estimate the total current density Jtot along the magnetic field lines as a function of the field‐aligned electric potential difference V between the ionosphere and the magnetosphere.
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Current Issues of Magnetosphere-Ionosphere Coupling

1993
Our ultimate goal is to understand the entire chain of the magnetosphere-iono-sphere coupling self-consistently, as well as to understand each link individually. Our movement toward this goal may be slow, because observations, which are bounded by a number of limitations, such as instruments, orbits, data sampling, etc.
Yohsuke Kamide, Wolfgang Baumjohann
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Current Models of Pulsar Magnetospheres

2010
Pulsar magnetospheres are filled with plasma, and the presence of plasma affects all macroscopic and microscopic properties of the magnetosphere. Although this simple fact was well known since the early days of pulsar research, the ability to quantitatively model plasma effects has emerged mainly in the last decade.
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Solstitial S-currents through the magnetosphere

Journal of Atmospheric and Terrestrial Physics, 1970
Abstract Starting from a theoretically derived expression for the density of the electric current which escapes upwards from the ionosphere, the S q -currents which flow along the magnetic lines of force through the magnetosphere as a consequence of the asymmetry in conductivity between the northern- and southern hemispheres have been computed ...
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Saturn's ring current and inner magnetosphere

Nature, 1981
The Voyager 1 magnetic field observations at Saturn are shown in a graph. The departure of the oberved magnetic field from the field of a dipole is considered. The observed field magnitude is appreciable less than that of the model dipole at small radial distances and greater than the model dipole in the more distant magnetosphere.
J. E. P. Connerney, M. H. Acuña, N. F. Ness   +2 more
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