Results 71 to 80 of about 740 (176)

Effects of Nonzero-frequency Fluctuations on Turbulence Spectral Observations

The Astrophysical Journal Letters
In situ observations of turbulence spectra in space plasmas are usually interpreted as wavenumber spectra, assuming that the fluctuation frequency is negligible in the plasma flow frame.
L.-L. Zhao, G. P. Zank, H. Li
doaj   +1 more source

The Density Distribution of Compressively Forced, Supersonic Turbulence Depends on the Driving Correlation Time

The Astrophysical Journal
Supersonic turbulence plays a critical role in shaping astrophysical systems, from molecular clouds to the circumgalactic medium. Key properties of this turbulence include the Mach number, driving scale, and nature of the driving mechanism, which can be ...
Philipp Grete, Evan Scannapieco, Marcus Brüggen, Liubin Pan   +3 more
doaj   +1 more source

Two Pathways of Turbulent Energy Processing in Solar Wind Current Sheets: Confined Fragmentation versus Organized Transport

The Astrophysical Journal
Understanding how turbulent energy is dissipated in the heliosphere remains a central challenge in space plasma physics. While magnetic reconnection and other dissipative processes occurring within current sheets are widely regarded as leading channels ...
Y. Wang, L. D. Wang, F. S. Wei, X. S. Feng, W. Y. Zhang, B. Y. Wang, P. B. Zuo, X. J. Xu, Z. L. Zhou   +8 more
doaj   +1 more source

Evolution of Solar Wind Turbulence during Radial Alignment of Parker Solar Probe and Solar Orbiter in 2022 December

The Astrophysical Journal Supplement Series
We investigate the radial evolution of solar wind turbulence during the radial alignment of Parker Solar Probe (PSP) and Solar Orbiter (SO) on 2022 December 10, with PSP located at approximately 0.11 au and SO near 0.88 au.
Ashok Silwal, Lingling Zhao, Xingyu Zhu, Luca Sorriso-Valvo, Lina Z. Hadid, Gary P. Zank, Hui Li, Samuel T. Badman, Yeimy J. Rivera, Sujan Prasad Gautam, Monika Karki, Juan G Alonso Guzman, Nibuna S. M. Subashchandar, Zeping Jin   +13 more
doaj   +1 more source

Solar cycle evolution of ICME sheath regions at 1 AU

Astronomy & Astrophysics
Aims. We investigate the evolution of interplanetary coronal mass ejection (ICME) sheath regions at 1 AU across solar cycles 23, 24, and the rising phase of 25, focusing on their variability and turbulence in relation to upstream solar wind conditions ...
Larrodera C., Temmer M., Owens M.
doaj   +1 more source

Comoving MHD simulations of the turbulent interplanetary evolution of a CME

Proceedings of the International Astronomical Union
Abstract Coronal mass ejections (CMEs) are eruptive solar events with great influence on Earth. They often carry coherent magnetic fields in the form of magnetic clouds as they propagate through the heliosphere. Despite being large-scale structures, CMEs are subject to meso-scale dynamical processes such as turbulence and magnetic ...
Mattia Sangalli, Andrea Verdini, Simone Landi, Emanuele Papini   +3 more
openaire   +1 more source

Evolution of the Interplanetary Turbulence and the Associated Turbulence Anisotropy in the Outer Heliosphere: VOYAGER 2 Observations

The Astrophysical Journal
Abstract We study the radial evolution of the inertial-range solar wind plasma turbulence and its anisotropy in the outer heliosphere. We use magnetic field ( B ) measurements from the Voyager 2 spacecraft for heliocentric distances R from 1 to 33 au.
Xingyu Zhu, Jiansen He, Gary P. Zank, Daniel Verscharen, Ling-Ling Zhao, Die Duan, Rong Lin   +6 more
openaire   +3 more sources

Influence of Solar Cycle on Magnetohydrodynamic Turbulent Modes at 1 au

The Astrophysical Journal
We study the effect of the solar cycle on various magnetohydrodynamic (MHD) fluctuation modes using the linear mode decomposition technique developed by G. P. Zank et al.
Sujan Prasad Gautam, Gary P. Zank, Laxman Adhikari, Alexander Pitňa, Ashok Silwal   +4 more
doaj   +1 more source

An Improved Fit to the Density Fluctuations in Supersonic Isothermal Turbulence

The Astrophysical Journal
The density distribution of supersonic isothermal turbulence plays a critical role in many astrophysical systems. It is commonly approximated by a log-normal distribution with a variance of ${\sigma }_{s,{\rm{V}}}^{2}\approx \mathrm{ln}(1+{b}^{2}{M}_ ...
Evan Scannapieco, Marcus Brüggen, Philipp Grete, Liubin Pan   +3 more
doaj   +1 more source

Magnetohydrodynamic Shock Jump Conditions in the Presence of Turbulence

The Astrophysical Journal
We investigate the MHD shock jump conditions in the presence of turbulence using Reynolds-averaged MHD (RAMHD) equations coupled with a turbulence transport model for high-plasma beta environments.
Masaru Nakanotani, Gary P. Zank, Lingling Zhao   +2 more
doaj   +1 more source