Results 191 to 200 of about 1,247 (219)

Dissipation of interplanetary turbulence by pick-up ions

Advances in Space Research, 1997
Abstract The interaction of MHD waves with pick-up ions in the outer heliosphere is considered. The transport equation for wave energy density describes non-linear wave interaction and wave dissipation due to the resonant interaction with pick-up ions.
V.S. Ptuskin, S.I. Rogovaya, V.N. Zirakashvili, J.A. Le Roux   +3 more
openaire   +1 more source

Magnetic field strength distribution in interplanetary turbulence

Journal of Geophysical Research: Space Physics, 2000
The distribution of magnetic field magnitudes is derived for the special case of a constant mean field and uncorrelated components having Gaussian distributions. Of the three cases considered (isotropic, transverse, and axisymmetric) the latter most closely resembles a lognormal distribution when the parallel variance is less than the perpendicular ...
T. Hartlep, W. H. Matthaeus, N. S. Padhye, C. W. Smith   +3 more
openaire   +1 more source

Turbulent cascade of incompressible unidirectional Alfvén waves in the interplanetary medium

Physical Review Letters, 1989
The large-scale inhomogeneity of the solar wind is taken into account to estimate the turbulent flux due to nonlinear interactions among purely outward-traveling waves. The nonlinear interactions are mediated by secondary, incoming waves generated by the linear coupling of the dominant species to the large-scale gradients.
, Velli, , Grappin, , Mangeney
openaire   +2 more sources

TRANSPORT EQUATION FOR MHD TURBULENCE: APPLICATION TO PARTICLE ACCELERATION AT INTERPLANETARY SHOCKS

Astrophysical Journal, 2009
The aim of the present paper is to unify the various transport equations for turbulent waves that are used in different areas of space physics. Here, we mostly focus on the magnetohydrodynamic turbulence, in particular the Alfvenic turbulence. The applied methods, however, are general and can be extended to other forms of turbulence, for example the ...
Igor V Sokolov, Ilia I Roussev, Tamás I Gombosi   +2 more
exaly   +4 more sources

Turbulent spectra of the solar wind near interplanetary shocks

2015 1st URSI Atlantic Radio Science Conference (URSI AT-RASC), 2015
The solar wind is a supersonic and super-Alfvenic plasma flow of solar origin filling the whole heliosphere. It has a strong turbulent character with several energy cascades. Interplanetary (IP) shocks are characterized by abrupt changes of plasma parameters and the magnetic field strength.
O. Kruparova, V. Krupar, J. Safrankova, Z. Nemecek, O. Santolik, M. Maksimovic, J. Soucek   +6 more
openaire   +1 more source

ULF Disturbances Caused by the Turbulent Sheath of Interplanetary Magnetic Clouds

Bulletin of the Russian Academy of Sciences: Physics, 2021
Simultaneous disturbances of the total electron content and the horizontal component of geomagnetic field in the range of Pc6 are registered during periods of magnetospheric substorms. Such disturbances arise in intervals of interaction between Earth’s magnetosphere and the turbulent sheath of magnetic clouds.
O. M. Barkhatova, V. G. Vorobjev, N. A. Barkhatov, S. E. Revunov   +3 more
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The magnetic field turbulence near interplanetary shock fronts

Advances in Space Research, 1984
The power spectra (frequency range 10−3 to 10−2 Hz) of the magnetic field fluctuations near interplanetary shock fronts (IPS) are analysed using Venera 13 and Venera 14 data. Ten events in teh period from November, 1981 to February, 1982 typical for IPS passings are evaluated. The event on February 2, 1982 is considered in detail.
E.I. Morozova, N.F. Pissarenko, W. Riedler, K. Schwingenschuh, G. Schelch, I.P. Bezrodnykh, Ye.G. Yeroshenko   +6 more
openaire   +1 more source

Fully Developed Anisotropic Hydromagnetic Turbulence in Interplanetary Space

Physical Review Letters, 1980
The solar-wind magnetohydrodynamic turbulence is observed to be mainly made of Alfv\'enic fluctuations propagating away from the sun. It is shown that such an asymmetric state is a general consequence of the evolution of developed magnetohydrodynamic turbulence, which, starting from an initial asymmetry between modes with cross helicity + 1 and - 1 ...
DOBROWOLNY M., MANGENEY A., VELTRI, Pierluigi   +2 more
openaire   +2 more sources

On the scaling properties of anisotropy of interplanetary magnetic turbulent fluctuations

EPL (Europhysics Letters), 2010
The anisotropic character of interplanetary magnetic-field turbulence has been studied through the analysis of Cluster data. The full tensor of the mixed second-order structure functions has been used to quatitatively measure the degree of anisotropy and its effect on small-scale turbulence.
SORRISO VALVO L, YORDANOVA E, CARBONE, Vincenzo   +2 more
openaire   +3 more sources

Models of inertial range spectra of interplanetary magnetohydrodynamic turbulence

Journal of Geophysical Research: Space Physics, 1990
Recently developed transport theories for small‐scale solar wind fluctuations explicitly treat convection, expansion, and other interactions with large‐scale gradients, while separating nonlinear effects associated with triple correlations of the fluctuations.
Ye Zhou, William H. Matthaeus
openaire   +1 more source