Results 21 to 30 of about 8,815 (178)

Nonextensive entropy approach to space plasma fluctuations and turbulence [PDF]

, 2006
Spatial intermittency in fully developed turbulence is an established feature of astrophysical plasma fluctuations and in particular apparent in the interplanetary medium by in situ observations.
Baumjohann, W., Leubner, M. P., Voros, Z.   +2 more
core   +2 more sources

A nonextensive entropy approach to solar wind intermittency

, 2004
The probability distributions (PDFs) of the differences of any physical variable in the intermittent, turbulent interplanetary medium are scale dependent.
Baumjohann W., Burlaga L. F., Castaing B. Y., Castaing B. Y., Frisch U., Gotoh T., Hnat B., M. P. Leubner, Marsch E., Marsch E., Matthaeus W. H., Milovanov A. V., Pagel C., Schmitt F., Shebalin J. V., Spangler S. R., Tu C.-Y., Voros Z., Voros Z., Voros Z., Z. Voros   +20 more
core   +1 more source

Solar energetic particle access to distant longitudes through turbulent field-line meandering [PDF]

, 2016
Context. Current solar energetic particle (SEP) propagation models describe the effects of interplanetary plasma turbulence on SEPs as diffusion, using a Fokker-Planck (FP) equation.
A. Kopp, Bavassano, Beeck, Bieber, Bruno, Burger, Burlaga, Cohen, Cranmer, Dalla, Dresing, Dresing, Dröge, Dröge, Dwyer, Effenberger, F. Effenberger, Fraschetti, Fraschetti, Giacalone, Giacalone, Giacalone, Giacalone, Gray, Gómez-Herrero, He, Isenberg, Jokipii, Kelly, Kopp, Kóta, Laitinen, Laitinen, Lario, Lario, le Roux, M. S. Marsh, Marsh, Matthaeus, Matthaeus, Mewaldt, Palmer, Parker, Pei, Potgieter, Qin, Qin, Qin, Reames, Richardson, Richter, Ruffolo, S. Dalla, Shalchi, Skilling, Strauss, Strauss, T. Laitinen, Torsti, Tu, Tu, Tu, Vainio, Wiedenbeck, Zank, Zhang, Zhang, Zhou   +67 more
core   +2 more sources

Radial evolution of power spectra of interplanetary Alfvénic turbulence [PDF]

Journal of Geophysical Research: Space Physics, 1982
The radial evolution of the power spectra of the MHD turbulence within the trailing edge of high‐speed streams in the solar wind has been investigated with the magnetic field data of HELIOS 1 and 2 for heliocentric distances between 0.3 and 0.9 AU. In the analyzed frequency range 2.8 · 10−4 ‐ 8.3 · 10−2 Hz the computed spectra have, near the earth ...
B. Bavassano, Norman F. Ness, F. Mariani, M. Dobrowolny   +3 more
openaire   +2 more sources

Magnetohydrodynamic turbulence in the solar wind [PDF]

, 1983
Recent work in describing the solar wind as an MHD turbulent fluid has shown that the magnetic fluctuations are adequately described as time stationary and to some extent as spatially homogeneous.
Goldstein, M. L., Matthaeus, W. H.
core   +1 more source

First Observation of Mini Harmonic Structure in Magnetosonic Waves

Geophysical Research Letters, Volume 52, Issue 11, 16 June 2025.
Abstract We recently reported the finding of elementary rising‐tone emissions embedded within each harmonic of magnetosonic waves, by investigating wave electric field waveforms measured by Van Allen Probes. The present study further uncovers a new set of fine structures of magnetosonic waves, namely, each elementary rising‐tone may consist of a series
Qiushuo Wang, Jinxing Li, Jacob Bortnik, Qianli Ma, Sheng Tian, Daniel N. Baker, John Wygant, George B. Hospodarsky, Geoffrey D. Reeves   +8 more
wiley   +1 more source

Simulated Energetic Particle Transport in the Interplanetary Space: The Palmer Consensus Revisited

, 2013
Reproducing measurements of the scattering mean free paths for energetic particles propagating through the solar system has been a major problem in space physics. The pioneering work of Bieber et al. [Astrophys. J. 420, 294 (1994)] provided a theoretical
Shalchi, A., Tautz, R. C.
core   +1 more source

Statistical Observations in Support of Bow Shock Current Closure to Earth's High‐Latitude Ionosphere During Non‐Zero IMF By

Journal of Geophysical Research: Space Physics, Volume 130, Issue 6, June 2025.
Abstract The bow shock current (BSC) plays an important role in supplying the magnetosphere with solar wind energy, in particular during times of low solar wind magnetosonic Mach numbers. Since the magnetic pile‐up in the magnetosheath has to be maintained, the BSC cannot close locally, but must instead connect to magnetospheric current systems ...
G. Nordin, M. Hamrin, E. Krämer, P. Dredger, S. Fatemi, R. E. Lopez, S. E. Milan, T. Pitkänen, T. Karlsson, O. Goncharov   +9 more
wiley   +1 more source

Turbulence, Intermittency, and Cross-Scale Energy Transfer in an Interplanetary Coronal Mass Ejection

Solar Physics, 2022
AbstractSolar wind measurements carried out by NASA’s Wind spacecraft before, during, and after the passing of an interplanetary coronal mass ejection (ICME), detected on 12 – 14 September 2014, have been used in order to examine several properties of magnetohydrodynamic (MHD) turbulence.
Roque Márquez Rodríguez, Luca Sorriso-Valvo, Emiliya Yordanova   +2 more
openaire   +4 more sources

Space Weather and Solar Wind Studies with OWFA

, 2017
In this paper, we review the results of interplanetary scintillation (IPS) observations made with the legacy system of the Ooty Radio Telescope (ORT) and compare them with the possibilities opened by the upgraded ORT, the Ooty Wide Field Array (OWFA ...
Chengalur, J. N., Manoharan, P. K., Subrahmanya, C. R.   +2 more
core   +1 more source