Results 161 to 170 of about 2,675,738 (224)

Sector boundary occurrences in the interplanetary medium

Earth, Moon, and Planets, 1988
The analysis of the mean frequency of occurrence of the sector boundaries of the interplanetary magnetic field within successive Bartels rotations have revealed sporadic periodicities of 14 and 28 Bartels rotations which correspond to yearly and biennial variations.
J. Xanthakis, V. Tritakis
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A model of the interplanetary medium

Icarus, 1962
Abstract An empirical model of the interplanetary medium is constructed. Near the orbit of earth, we find an electron density of about 1/cm3 and an expansion velocity of about 200 km/sec. A high velocity “solar wind” seems to prevail for 0⩽r⩽2 au, while a low velocity “solar breeze” seems to prevail beyond 2 au.
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Physical Properties of the Interplanetary Medium

1985
The solar wind is one of the main factors which, along with electromagnetic radiation from the Sun and planets, determines physical conditions in the circumsolar space. This is a more or less continuous plasma flow which is generated in the upper corona of the Sun and carries magnetic fields of solar origin.
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Alfvén Waves in the Interplanetary Medium

1971
A study of the wave properties of the microscale fluctuations (scale lengths of .01 a.u. and less) in the interplanetary medium is presented using plasma and magnetic field data from Mariner V (Venus 1967). The reduction procedure for the magnetic field data is summarized, and descriptions are given of the MIT plasma data and the merged plasma/field ...
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Large‐scale fluctuations in the interplanetary medium

Journal of Geophysical Research: Space Physics, 1987
Power spectra of measurements of the magnetic field strength in the heliosphere obtained by Voyager 1 between 1 AU and 9 AU have the form of a power law ƒ−a from periods of several hours to at least 6 days. The exponent was a = 2.0 ±0.05 for all of the spectra considered, which is the exponent for a series of steps and for Burgers' turbulence.
L. F. Burlaga, W. H. Mish
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Large-Scale Structure of the Interplanetary Medium

1990
From eclipse observations it was well known that the solar corona is highly structured and changes its shape enormously during the solar activity cycle. Hence, it was no great surprise when both these properties (spatial structure and temporal variability) were found to be reproduced in the corona’s offspring, i.e. the solar wind.
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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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Energetic Solar Particles in the Interplanetary Medium

1972
Models which describe the diffusion of energetic solar particles in the interplanetary medium are reviewed. Most attention is paid to the case of impulsive emission from solar flares, taking into account the effects of the interplanetary magnetic field, diffusion near the Sun, convection, and energy losses associated with the expansion of the solar ...
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Non-thermal particles in the interplanetary medium

Advances in Space Research, 1993
During the past few years we have found that the MeV ion populations from a variety different of solar and interplanetary sources have quite distinct abundances and spectra. Particles from impulsive flares are electron rich, have 3He/4He enhancements of up to 104, and enhancements in heavy elements like Fe/C by factors of 10, relative to coronal ...
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Cosmic-ray vector anisotropy and local characteristics of the interplanetary medium

Geomagnetism and Aeronomy, 2017
A. Belov, M. Abunina, A. Abunin, E. Eroshenko, V. Oleneva, V. Yanke   +5 more
semanticscholar   +1 more source