Results 31 to 40 of about 9,642 (217)

Acceleration of Solar Wind Ions by Nearby Interplanetary Shocks: Comparison of Monte Carlo Simulations with Ulysses Observations [PDF]

, 1996
The most stringent test of theoretical models of the first-order Fermi mechanism at collisionless astrophysical shocks is a comparison of the theoretical predictions with observational data on particle populations.
Balogh A., Baring M. G., Baring M. G., Bell A. R., Burton M. E., Decker R. B., Decker R. B., Donald C. Ellison, Ellison D. C., Ellison D. C., Ellison D. C., Fuselier S. A., Fuselier S. A., Giacalone J., Gloeckler G., Gloeckler G., Gosling J. T., Gosling J. T., Gosling J. T., Gosling J. T., Gosling J. T., Hoppe M. M., Hundhausen A. J., Ipavich F. M., Ipavich F. M., Jokipii J. R., Jones F. C., Jones T. W., Keith W. Ogilvie, Kennel C. F., Lanzerotti L. J., Lee M. A., Liewer P. C., Matthew G. Baring, Mobius E., Ogilvie K. W., Phillips J. L., Robert J. Forsyth, Sarris E. T., Scholer M., Tan L. C., Tan L. C., Trattner K. J., Trattner K. J., Tsurutani B. T., Valdes-Galicia J. F., Vasyliunas V. M., Vinas A. F.   +47 more
core   +2 more sources

MHD Turbulence in the Solar Wind and Interplanetary Dynamo Effects [PDF]

Symposium - International Astronomical Union, 1993
From the fluctuations of the velocity and magnetic field observed in different kinds of solar wind the fluctuating electric fields are derived, and their power spectra are constructed and analysed. The mean electromotive force ɛ generated by the turbulent motions depends upon the nature of the fluctuations.
Marsch, E., Tu, C.
openaire   +2 more sources

Persistence of small-scale anisotropy of magnetic turbulence as observed in the solar wind [PDF]

, 2006
The anisotropy of magnetophydrodynamic turbulence is investigated by using solar wind data from the Helios 2 spacecraft. We investigate the behaviour of the complete high-order moment tensors of magnetic field increments and we compare the usual ...
Biskamp D., Bruno R., Carbone V., Frisch U., Kolmogorov A. N., Kurien S., L Sorriso-Valvo, P Veltri, R Bruno, Sonnerup B. U. O., Sreenivasan K. R., V Carbone   +11 more
core   +2 more sources

Multipoint Turbulence Analysis with HelioSwarm

The Astrophysical Journal Letters, 2023
Exploration of plasma dynamics in space, including turbulence, is entering a new era of multisatellite constellation measurements that will determine fundamental properties with unprecedented precision.
Francesco Pecora, Sergio Servidio, Leonardo Primavera, Antonella Greco, Yan Yang, William H. Matthaeus   +5 more
doaj   +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, M. Dobrowolny, F. Mariani, N. F. Ness   +3 more
openaire   +1 more source

Modulation of galactic cosmic rays during the unusual solar minimum between cycles 23 and 24 [PDF]

, 2014
During the recent solar minimum between cycles 23 and 24 (solar minimum $P_{23/24}$) the intensity of Galactic Cosmic Rays (GCRs) measured at the Earth was the highest ever recorded since space age.
Heber, B., Qin, G., Zhang, M., Zhao, L. -L.   +3 more
core   +3 more sources

Turbulence development behind the bow shock during disturbed and undisturbed solar wind

Solar-Terrestrial Physics
Magnetosheath is a transition layer between the solar wind and the magnetosphere and may contribute to the geoeffectiveness of various large-scale interplanetary phenomena.
Rakhmanova L. S., Khokhlachev A. A., Riazantseva M. O., Yermolaev Y. I., Zastenker G. N.   +4 more
doaj   +1 more source

Non-universality of the Turbulent Spectra at Sub-ion Scales in the Solar Wind: Dispersive Effects versus the Doppler Shift

The Astrophysical Journal, 2023
Large surveys of the power spectral density of the magnetic fluctuations in the solar wind have reported different slope distributions at MHD, sub-ion and sub-electron scales: the smaller the scale, the broader the distribution.
Fouad Sahraoui, Shiyong Huang
doaj   +1 more source

Decay of Solar Wind Turbulence behind Interplanetary Shocks

The Astrophysical Journal, 2017
Abstract We investigate the decay of magnetic and kinetic energies behind IP shocks with motivation to find a relaxation time when downstream turbulence reaches a usual solar wind value. We start with a case study that introduces computation techniques and quantifies a contribution of kinetic fluctuations to the general energy balance ...
Alexander Pitňa, Jana Šafránková, Zdeněk Němeček, Luca Franci   +3 more
openaire   +2 more sources