Results 1 to 10 of about 8,815 (178)

On Yaglom's Law for the Interplanetary Proton Density and Temperature Fluctuations in Solar Wind Turbulence. [PDF]

Entropy (Basel), 2020
In the past decades, there has been an increasing literature on the presence of an inertial energy cascade in interplanetary space plasma, being interpreted as the signature of Magnetohydrodynamic turbulence (MHD) for both fields and passive scalars.
Consolini G, Alberti T, Carbone V.
europepmc   +6 more sources

Turbulence Upstream and Downstream of Interplanetary Shocks [PDF]

Frontiers in Physics, 2021
The paper reviews the interaction of collisionless interplanetary (IP) shocks with the turbulent solar wind. The coexistence of shocks and turbulence plays an important role in understanding the acceleration of particles via Fermi acceleration mechanisms, the geoeffectiveness of highly disturbed sheaths following IP shocks and, among others, the nature
Alexander Pitňa, Tereza Ďurovcová, A. Kis, J. Šafránková, Z. Němeček   +4 more
openaire   +3 more sources

Shock waves propagation in the turbulent interplanetary plasma [PDF]

Advances in Space Research, 1996
AbstractEffect of turbulence on interplanetary shock waves propagation is considered. It is shown that background turbulence results in the additional shock wave deceleration which may be comparable with the deceleration due to plasma sweeping. The turbulent deceleration is connected with the energy losses due to the strong turbulence amplification ...
I. V. Chashei, V. I. Shishov
openaire   +4 more sources

Structure of the Turbulent Interplanetary Magnetic Field [PDF]

The Astrophysical Journal, 2006
We show that two widely used but apparently different models of the turbulent interplanetary magnetic field are closely related. One of these is the so-called quasi-static turbulence model, in which interplanetary magnetic field fluctuations are generated at a source surface near the Sun by random transverse plasma motions (such as supergranulation at ...
Joe Giacalone, J. R. Jokipii, William H. Matthaeus   +2 more
openaire   +2 more sources

Interplanetary and interstellar plasma turbulence [PDF]

Plasma Physics and Controlled Fusion, 2007
Theoretical approaches to low-frequency magnetized turbulence in collisionless and weakly collisional astrophysical plasmas are reviewed. The proper starting point for an analytical description of these plasmas is kinetic theory, not fluid equations. The anisotropy of the turbulence is used to systematically derive a series of reduced analytical models.
Alessandro Bortolon, A. Pochelon, R.A. Pitts, A. Scarabosio, B. P. Duval, A. N. Karpushov   +5 more
openaire   +8 more sources

Decay of Solar Wind Turbulence behind Interplanetary Shocks [PDF]

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 ...
Pitňa, Alexander, Šafránková, Jana, Němeček, Zdeněk, Franci, Luca   +3 more
openaire   +3 more sources

On the probability distribution function of small scale interplanetary magnetic field fluctuations [PDF]

, 2004
In spite of a large number of papers dedicated to study MHD turbulence in the solar wind there are still some simple questions which have never been sufficiently addressed like: a)do we really know how the magnetic field vector orientation fluctuates in ...
Bavassano, B., Bruno, R., Carbone, V., Malara, F., Primavera, L., Sorriso-Valvo, L., Veltri, P.   +6 more
core   +4 more sources

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

Solar interacting protons versus interplanetary protons in the core plus halo model of diffusive shock acceleration and stochastic re-acceleration [PDF]

, 2015
With the first observations of solar γ-rays from the decay of pions, the relationship of protons producing ground level enhancements (GLEs) on the Earth to those of similar energies producing the γ-rays on the Sun has been debated.
A. Afanasiev, Ackermann M., Afanasiev A., Ajello M., Axford W. I., Chollet E. E., Chollet E. E., Dröge W., Dung R., Fletcher L., Giacalone J., Hu Q., J. M. Ryan, K. Mursula, Kaplan S. A., Kocharov L., Kocharov L., Kocharov L., Kocharov L., Kocharov L., Kocharov L., Kocharov L., Krymsky G. F., L. Kocharov, Laitinen T., Lee M. A., Matthaeus W. H., Mazur J. E., Melrose D. B., Ng C. K., Qin G., R. Vainio, Schlickeiser R., T. Laitinen, Toptygin I. N., Vainio R., Vainio R., Vainio R., van der Holst B., Vörös Z., Wang Y., Zank G. P.   +41 more
core   +1 more source

Transport of cross helicity and radial evolution of alfvenicity in the solar wind [PDF]

, 2004
A transport theory including cross helicity, magnetohydrodynamic(MHD) turbulence, and driving by shear and pickup ions, is applied to the radial evolution of the solar wind.
Bieber, J.W., Breech, Ben, Matthaeus, William H., Minnie, J., Oughton, Sean, Parhi, S.   +5 more
core   +1 more source