Results 151 to 160 of about 740 (176)

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

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

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
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

Transport of solar electrons in the turbulent interplanetary magnetic field

Physics of Plasmas, 2016
The turbulent transport of solar energetic electrons in the interplanetary magnetic field is investigated by means of a test-particle Monte-Carlo simulation. The magnetic fields are modeled as a combination of the Parker field and a turbulent component.
J. Ablaßmayer, R. C. Tautz, N. Dresing
openaire   +1 more source

Interplanetary MHD turbulence: A wavelet approach

1997
Using solar wind data recorded by the Helios-2 spacecraft at 0.3 AU we analyse MHD turbulence by means of continuous wavelet transform. This new technique, differently from FFT technique, provides a good spatial and temporal resolution. This feature allows to study in more detail local properties of solar wind turbulence. Power density spectra computed
PIETROPAOLO, Ermanno, Bruno, R, Bavassano, B, Carbone, V.   +3 more
openaire   +2 more sources

Turbulent Generation of Outward-Traveling Interplanetary Alfvénic Fluctuations

Physical Review Letters, 1983
Additional evidence is presented for the dynamic alignment of the fluctuating plasma fluid velocity and the fluctuating magnetic field in two-dimensional MHD turbulence. The evidence is seen as indicating that the interplanetary fluctuations need not represent time-asymptotic states. Rather, it is contended that interplanetary Alfvenic fluctuations are
William H. Matthaeus, Melvyn L. Goldstein, David C. Montgomery   +2 more
openaire   +1 more source

Particle acceleration at shocks and magnetic turbulence in the interplanetary space

2019
Dottorato Ricerca in Scienze e Tecnologie Fisiche, Chimiche e dei Materiali.
Chiappetta, Federica, Carbone, Vincenzo, Lepreti, Fabio   +2 more
openaire   +1 more source