Results 121 to 130 of about 887 (157)
Some of the next articles are maybe not open access.
Journal of Geophysical Research, 1976
The characteristics of lion roars, which are intense packets of electromagnetic waves characteristically found in the magnetosheath, are studied. The average frequency of the emissions is 120 Hz, with over 90% occurring between 90 and 160 Hz (which is near one-half the local electron gyrofrequency); over 70% of all emissions last a mere 2 sec or less ...
Edward J. Smith, Bruce T. Tsurutani
openaire +1 more source
The characteristics of lion roars, which are intense packets of electromagnetic waves characteristically found in the magnetosheath, are studied. The average frequency of the emissions is 120 Hz, with over 90% occurring between 90 and 160 Hz (which is near one-half the local electron gyrofrequency); over 70% of all emissions last a mere 2 sec or less ...
Edward J. Smith, Bruce T. Tsurutani
openaire +1 more source
On the form of the flow in the magnetosheath
Journal of Geophysical Research: Space Physics, 1992The form of the flow field in the subsonic and transsonic magnetosheath has received little attention since the proposal of a depletion layer adjacent to the magnetopause by Zwan and Wolf. Recently, observations of density enhancements just upstream of the magnetopause which have been interpreted as slow mode compressional fronts appear to contradict ...
David J. Southwood, Margaret G. Kivelson
openaire +1 more source
MHD-modelling of the magnetosheath
Planetary and Space Science, 2002Abstract A short discussion of some problems of magnetosheath physics is presented. In particular, anisotropic MHD models of the magnetosheath are discussed. A method to estimate the value of the characteristic relaxation time (τ) of the proton temperature anisotropy from experimental data is proposed.
Pudovkin, M. +6 more
openaire +2 more sources
The cusp-magnetosheath interface
Journal of Geophysical Research, 1976Three Heos 2 passes through the distant cusp-magnetosheath transition in summer 1973 are described. By combining data from three different experiments on board Heos 2 it has been possible to identify a distinct transition from a ‘stagnant’ plasma (the distant cusp) to a region of ‘reduced flow’ magnetosheath.
A. Mencke Hansen +2 more
openaire +1 more source
Magnetosheath whistler turbulence
Journal of Geophysical Research: Space Physics, 1985Magnetic field short‐period fluctuations δB are observed throughout the earth's magnetosheath. We report a study of these fluctuations with frequencies 20 < f < 1000 Hz in which the turbulence has a broadband spectrum δB²(f) varying approximately as f−α, where α ∼ 4±0.5, or consists of a narrowband intermediate frequency peak superimposed on the ...
openaire +1 more source
Magnetic fields of the magnetosheath
Reviews of Geophysics, 1976The magnetic field of the magnetosheath is most naturally discussed in terms of its steady state and its fluctuating components. The theory of the steady state field is quite well developed, and its essential features have been confirmed by observations.
openaire +1 more source
Mirror instability in the magnetosheath
Advances in Space Research, 1994We describe mirror mode structures observed by ISEE 1 and ISEE 2. We cite an example where there is a good correlation between signals measured at the two spacecraft while they are 2250 km apart, and another example where the correlation is much poorer, although the spacecraft are only 340 km apart.
A.N. Fazakerley, D.J. Southwood
openaire +1 more source
Magnetosheath electrostatic turbulence
Journal of Geophysical Research: Space Physics, 1979By using measurements with the University of Iowa plasma wave experiment on the Imp 6 satellite a study has been conducted of the spectrum of electrostatic plasma waves in the terrestrial magnetosheath. Electrostatic plasma wave turbulence is almost continuously present throughout the magnetosheath with broadband (20 Hz to 70 kHz) rms field intensities
openaire +1 more source
Advances in Space Research, 2016
Abstract This paper describes an approach to a theoretical interpretation of Interball-1 satellite measurements data in two cases of the satellite’s crossings of the magnetosheath. An interpretation is made of both the measured crossings of the magnetosheath boundaries and the behavior of the registered plasma parameters. In our case, it is the value
P.S. Dobreva +3 more
openaire +1 more source
Abstract This paper describes an approach to a theoretical interpretation of Interball-1 satellite measurements data in two cases of the satellite’s crossings of the magnetosheath. An interpretation is made of both the measured crossings of the magnetosheath boundaries and the behavior of the registered plasma parameters. In our case, it is the value
P.S. Dobreva +3 more
openaire +1 more source
The magnetosheaths of the outer planets
Planetary and Space Science, 2002Abstract This paper provides a review of past work on the magnetosheaths of the outer planets and also provides the most complete look to date at the plasma parameters in these magnetosheaths. We find that proton distributions in the magnetosheaths of Jupiter, Saturn, and Neptune (but not Uranus) are well represented by two Maxwellians with the same ...
openaire +1 more source