Results 1 to 10 of about 1,247 (219)

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,
A Pitna, J Šafránková, Z Němeček
exaly   +4 more sources

Effect of interplanetary shock waves on turbulence parameters [PDF]

Annales Geophysicae
We perform an extensive statistical investigation of how interplanetary fast forward shocks affect certain turbulence parameters, namely, the normalised cross-helicity, σc; residual energy, σr; and magnetic helicity, σm.
E. Kilpua, S. Good, J. Soljento, D. Trotta, D. Trotta, T. Bäcker, J. Ruohotie, J. Pomoell, C. Sishtla, C. Sishtla, R. Vainio   +10 more
doaj   +7 more sources

Kinematic models of the interplanetary magnetic field [PDF]

Annales Geophysicae, 2019
Current knowledge on the description of the interplanetary magnetic field is reviewed with an emphasis on the kinematic approach as well as the analytic expression.
C. Lhotka, Y. Narita
doaj   +2 more sources

An Analytical Model of Turbulence in Parker Spiral Geometry and Associated Magnetic Field Line Lengths

The Astrophysical Journal, 2023
Understanding the magnetic connections from the Sun to interplanetary space is crucial for linking in situ particle observations with the solar source regions of the particles.
T. Laitinen, S. Dalla, C. O. G. Waterfall, A. Hutchinson   +3 more
doaj   +1 more source

Lagrangian Stochastic Model for the Motions of Magnetic Footpoints on the Solar Wind Source Surface and the Path Lengths of Boundary-driven Interplanetary Magnetic Field Lines

The Astrophysical Journal, 2023
In this work, we extend Leighton’s diffusion model describing the turbulent mixing of magnetic footpoints on the solar wind source surface. The present Lagrangian stochastic model is based on the spherical Ornstein–Uhlenbeck process with drift that is ...
Gang Li, N. H. Bian
doaj   +1 more source

Relationship of Transport Coefficients with Statistical Quantities of Charged Particles

The Astrophysical Journal, 2023
In previous studies, a general spatial transport equation was derived from the Fokker–Planck equation. The latter equation contains an infinite number of spatial derivative terms T _n = κ _nz ∂ ^n F /∂ z ^n with n = 1, 2, 3, ⋯ .
J. F. Wang, G. Qin
doaj   +1 more source

Cosmic ray fluctuations and MHD waves in the solar wind

Solar-Terrestrial Physics, 2023
During large-scale solar wind disturbances, variations in galactic cosmic rays with periods from several minutes to 2–3 hours, which are called cosmic ray fluctuations in the scientific literature, often occur.
Starodubtsev S. A., Zverev A. S., Gololobov P. Y., Grigoryev V. G.   +3 more
doaj   +1 more source

Change of Spectral Properties of Magnetic Field Fluctuations across Different Types of Interplanetary Shocks

The Astrophysical Journal Letters, 2023
The interaction between interplanetary (IP) shocks and the solar wind has been studied in the past for the understanding of energy dissipation mechanisms within collisionless plasmas.
Byeongseon Park, Alexander Pitňa, Jana Šafránková, Zdeněk Němeček, Oksana Krupařová, Vratislav Krupař, Lingling Zhao, Ashok Silwal   +7 more
doaj   +1 more source

Nature, Generation, and Dissipation of Alfvénic Kinks/Switchbacks Observed by Parker Solar Probe and WIND

The Astrophysical Journal, 2023
The discovery of very prominent magnetic kinks/switchbacks in the solar wind within 0.3 au has become a scientific highlight of the Parker Solar Probe (PSP) mission. This discovery points at the promising impact of small-scale solar activity on the inner
Chuanpeng Hou, Xingyu Zhu, Rui Zhuo, Jiansen He, Daniel Verscharen, Die Duan   +5 more
doaj   +1 more source

Turbulence in the interstellar medium [PDF]

, 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., Chian, A. C.-L., G. Kowal, Falgarone, E., E. Falgarone, Falceta-Goncalves, D., Kowal, G., Chian, A., A. C.-L. Chian, D. Falceta-Gonçalves   +9 more
core   +1 more source