Results 21 to 30 of about 278,597 (210)

Dynamical age of solar wind turbulence in the outer heliosphere [PDF]

open access: yes, 1998
In an evolving turbulent medium, a natural timescale can be defined in terms of the energy decay time. The time evolution may be complicated by other effects such as energy supply due to driving, and spatial inhomogeneity.
Matthaeus, William H.   +5 more
core   +1 more source

Turbulence in the interstellar medium [PDF]

open access: yes, 2014
Turbulence is ubiquitous in the insterstellar medium and plays a major role in several processes such as the formation of dense structures and stars, the stability of molecular clouds, the amplification of magnetic fields, and the re-acceleration and ...
Chian, A. C. -L.   +9 more
core   +2 more sources

Phenomenology of hydromagnetic turbulence in a uniformly expanding medium [PDF]

open access: yes, 1996
A simple phenomenology is developed for the decay and transport of turbulence in a constant-speed, uniformly expanding medium. The fluctuations are assumed to be locally incompressible, and either of the hydrodynamic or non-Alfvénic magnetohydrodynamic ...
Matthaeus, William H.   +2 more
core   +1 more source

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

open access: yes, 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.
Matthaeus, William H.   +5 more
core   +2 more sources

von Karman Correlation Similarity of the Turbulent Interplanetary Magnetic Field

open access: yesThe Astrophysical Journal Letters, 2021
Abstract A major development underlying much of hydrodynamic turbulence theory is the similarity decay hypothesis due to von Karman and Howarth here extended empirically to magnetic field fluctuations in the solar wind. In similarity decay the second-order correlation experiences a continuous transformation based on a universal ...
Sohom Roy   +4 more
openaire   +2 more sources

Three-dimensional spatial structures of solar wind turbulence from 10 000-km to 100-km scales [PDF]

open access: yes, 2011
Using the four Cluster spacecraft, we have determined the three-dimensional wave-vector spectra of fluctuating magnetic fields in the solar wind. Three different solar wind intervals of Cluster data are investigated for this purpose, representing ...
Narita, Y.   +15 more
core   +2 more sources

Turbulence, intermittency and cross-scale energy transfer in an interplanetary coronal mass ejection [PDF]

open access: yes, 2022
Solar 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 ...
Yordanova, Emiliya,   +11 more
core   +1 more source

Contribution of Cyclotron-resonant Damping to Kinetic Dissipation of Interplanetary Turbulence [PDF]

open access: yesThe Astrophysical Journal, 1998
With 1 figure; accepted by Astrophys. J.
Leamon, Robert J.   +3 more
openaire   +2 more sources

Radial evolution of cross helicity in high-latitude solar wind [PDF]

open access: yes, 2005
We employ a turbulence transport theory to explain the high-latitude radial evolution of cross helicity, or Alfvénicity, observed by the Ulysses spacecraft.
Matthaeus, William H.   +6 more
core   +1 more source

Solar and Interplanetary Turbulence: Lagrangian Coherent Structures

open access: yes, 2020
<p>The dynamics of solar and interplanetary plasmas is governed by coherent structures such as current sheets and magnetic flux ropes which are responsible for the genesis of intermittent turbulence via magnetic reconnections in solar supergranular junctions, solar coronal loops, the shock-sheath region of an interplanetary ...
Abraham C.‐L. Chian   +13 more
openaire   +2 more sources

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