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On the origin of turbulent fields in interplanetary plasmas
AIP Conference Proceedings, 2008Solar coronal mass ejections are prominent example of interpenetrating particle streams with different properties: densities, speeds, temperature and composition. Such counterstreaming plasmas are quickly unstable leading to the excitation of the electrostatic and electromagnetic instabilities.
M. Lazar +3 more
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Turbulent cascade of incompressible unidirectional Alfvén waves in the interplanetary medium
Physical Review Letters, 1989The 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
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Turbulence associated with interplanetary shock waves within 1 AU
Advances in Space Research, 1984Abstract The nature and strength of low-frequency MHD turbulence in association with fast-forward, oblique shock waves is investigated using Helios 1 magnetic field and plasma data. Power and coherence spectra were computed and compared for the pre- and post-shock regions for the magnetic field, velocity and density fluctuations in the frequency ...
A. Luttrell +3 more
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Interplanetary turbulences causing unusual anisotropic wave trains in cosmic rays
Astroparticle Physics, 2007Abstract The various observed harmonics of the cosmic ray variation may be understood on a unified basis if the free space cosmic ray anisotropy is non-sinusoidal in form. The major objective of this paper is to study the first three harmonics of high amplitude wave trains of cosmic ray intensity over the period 1991–1994 for Deep River Neutron ...
R MISHRA, R MISHRA
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Transport of solar electrons in the turbulent interplanetary magnetic field
Physics of Plasmas, 2016The 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
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Radar detection of interplanetary shocks: Scattering by anisotropic Langmuir turbulence
Advances in Space Research, 2010Earth-directed interplanetary shocks associated with Coronal Mass Ejections (CMEs) are known to have a severe impact on the magnetosphere, causing strong geomagnetic storms and substorms. Hence, early detection of such shocks is important. Here we study the feasibility of radar detection of interplanetary shocks.
Mykola V. Khotyaintsev +3 more
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Interplanetary MHD turbulence: A wavelet approach
1997Using 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 +3 more
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Absence of upstream energetic ions under turbulent radial interplanetary magnetic field
Journal of Geophysical Research: Space Physics, 1992According to Fermi models as applied to the Earth's bow shock energetic particles are accelerated most efficiently under radial interplanetary magnetic field (IMF) conditions. In an earlier paper (Sarris and Krimigis, 1988) we tested the Fermi mechanism for cases of radial IMF when no detectable ambient energetic particle fluxes were present.
E. T. Sarris +2 more
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On the scaling properties of anisotropy of interplanetary magnetic turbulent fluctuations
EPL (Europhysics Letters), 2010The 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 +2 more
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A power spectral analysis of turbulence associated with interplanetary shock waves
AIP Conference Proceedings, 2013We calculate the power spectra densities of magnetic field fluctuations associated with interplanetary shock waves at 1AU, utilizing in-situ magnetic field measurements from spacecraft ACE and Wind. We derive related quantities both upstream and downstream of a shock as a function of time/distance away from the shock passage.
Qiang Hu +3 more
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