Results 201 to 210 of about 2,583 (231)

The interplanetary magnetic field structure

Nature, 1976
The seasonal bias in the sector structure of the interplanetary magnetic field has led to the suggestion that the field in each hemisphere of the solar cavity has the same polarity as the average magnetic field at the corresponding solar pole, and that the surface which separates the two polarity regions is only slightly warped.
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Interplanetary magnetic field and magnetospheric substorms

Planetary and Space Science, 1977
The interplanetary magnetic field (IMF) changes and the associated responses of the magnetosphere on November 1, 1972, are examined. IMF Bz changes consisted of a sudden southward turning, a slow northward turning, and a subsequent steady northward sense. Magnetospheric substorms occurred throughout this period.
S.-I. Akasofu, R.P. Lepping
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The Configuration of the Interplanetary Magnetic Field

1972
The idealized basic structure of the interplanetary magnetic field is the familiar spiral wound on a cone whose axis is the solar rotation axis. Variations in the radial velocity of the solar wind produce large scale variations in pitch; slight distortions are also produced by the non-radial component of the solar wind velocity.
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Magnetic fields in the interplanetary medium

Advances in Space Research, 1982
Interplanetary magnetic field lines are attached to the Sun at one end • and their form is determined primarily by the motions of the solar wind and by the rotation of the Sun. The solar wind, in effect, carries the magnetic field lines with it as it moves radially away from the Sun, while the Sun carries the base of each line along a circle as it ...
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Interplanetary Magnetic Field Dynamics

2001
The role of the IMF in the dynamics of solar wind interaction with the geomagnetosphere was proposed by Dungey in 1961. Early in-situ IMF measurements in the 60's confirmed the association of the magnitude and direction of the IMF with the Kp magnetic activity index.
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Magnetic Fields in Interplanetary Space

Science, 1965
The brief period between the conception of the interplanetary magnetic field and conclusive proof of its existence has been an exciting one. Imaginative theoretical developments and careful experimental verification have both been essential to rapid progress.
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Solar and Interplanetary Magnetic Field I. The General Magnetic Field

Publications of the Astronomical Society of Japan, 1956
Abstract It is proposed that a possible solar and interplanetary magnetic field may have been built up by the movement of conducting material, steadily emitted from the sun, through the solar original magnetic field. An unknown function S(φ) and two parameters N and n, in this theory, are necessary to account for the shape of of lines ...
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Interplanetary Magnetic Field and the Auroral Zones

Physical Review Letters, 1961
Abstract : It was found that a model with a southward interplanetary magnetic field leads to a natural explanation of the SD currents. Speculative aspects of the problem as they appear at this time are discussed. It should be remembered that this problem is amenable to revolutionary progress by observations from rockets or satellites which go out more ...
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Interplanetary Magnetic Fields and Cosmic Rays

Physical Review, 1955
The existence in the region around the sun of a field-free cavity in the galactic magnetic field seems indicated by the low-energy cosmic rays that reach the earth from the sun. Such a cavity would be produced by the solar corpuscular emission. A mean radius of the order of 200 times the distance from the sun to the earth may be estimated for this ...
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Polar substorm and interplanetary magnetic field

Planetary and Space Science, 1971
Abstract By means of the IMP 3 magnetic data, a study is made on the relationships between the interplanetary magnetic field and the development of polar substorm. It is found that an explosive growth of the westward electrojet tends to appear after the interplanetary magnetic field has directed southward for 1–2 hr.
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