Results 91 to 100 of about 329,171 (264)

Analysis on the Turbulent Properties of Current Sheets in the Solar Wind

The Astrophysical Journal
The energy dissipation of solar wind turbulence, closely linked to solar wind heating, is a fundamental process in space physics. Previous research indicates that current sheets in the solar wind significantly influence both energy dissipation and ...
L. D. Wang, Y. Wang, F. S. Wei, X. S. Feng, B. Y. Wang, P. B. Zuo, W. Y. Zhang, X. J. Xu, Z. L. Zhou, X. J. Song   +9 more
doaj   +1 more source

Magnetic Cloud and Its Interplanetary Shock Sheath as a Modulator of the Cosmic Ray Intensity [PDF]

Journal of Astronomy and Space Sciences, 2008
Forbush Decreases (FDs) are representative events of abrupt decrease in galactic cosmic ray intensity. They are known to be strongly associated with solar wind events such as interplanetary shock (IP shock) and magnetic cloud (MC).
Su Yeon Oh
doaj   +1 more source

Record-setting Cosmic-ray Intensities in 2009 and 2010 [PDF]

, 2010
We report measurements of record-setting intensities of cosmic-ray nuclei from C to Fe, made with the Cosmic Ray Isotope Spectrometer carried on the Advanced Composition Explorer in orbit about the inner Sun-Earth Lagrangian point. In the energy interval
Blake, J. B., Case, A. W., Joyce, C. J., Kasper, J., Mazur, J., Petro, N., Porter, J. A., Quinn, M., Schwadron, N. A., Smith, C. W., Smith, S., Spence, H. E., Townsend, L. W., Turner, R., Wilson, J. K., Zeitlin, C.   +15 more
core   +2 more sources

An Open‐Source Python Version of Power Spectral Density Periodicity Detection and Background Estimation Using the Adaptive Multitaper Method

Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.
Abstract The adaptive Multitaper Method (aMTM) is a Fourier analysis‐based technique that produces a power spectral density (PSD) with a user‐defined frequency resolution, reduces variance associated with standard digital Fourier Transform (FT) algorithms, and minimizes spectral power leakage.
Hector A. Salinas, Simone Di Matteo, Nicholeen M. Viall, Larry Kepko, Victoria D. Wilder   +4 more
wiley   +1 more source

Turbulent Heating of Solar Wind Plasma Downstream of Magnetohydrodynamic Shocks

The Astrophysical Journal
Interplanetary (IP) shocks are believed to play a significant role in both amplifying the background level of turbulent fluctuations and in heating the bulk solar wind (SW). This study investigates the thermodynamic properties downstream of IP shocks. We
Alexander Pitňa, Jana Šafránková, Zdeněk Němeček, Gilbert Pi, Gary Zank, Lingling Zhao, Laxman Adhikari, Masaru Nakanotani   +7 more
doaj   +1 more source

Relating Intermittency and Inverse Cascade to Stochastic Entropy in Solar Wind Turbulence

The Astrophysical Journal Letters, 2023
Turbulent energy transfer in nearly collisionless plasmas can be conceptualized as a scale-to-scale Langevin process. Hence, the statistics of magnetic field fluctuations can be embedded in the framework of stochastic process theory.
Mirko Stumpo, Simone Benella, Tommaso Alberti, Oreste Pezzi, Emanuele Papini, Giuseppe Consolini   +5 more
doaj   +1 more source

Early-time velocity autocorrelation for charged particles diffusion and drift in static magnetic turbulence

, 2012
Using test-particle simulations, we investigate the temporal dependence of the two-point velocity correlation function for charged particles scattering in a time-independent spatially fluctuating magnetic field derived from a three-dimensional isotropic ...
Bakunin, Bieber, Bykov, Corrsin, F. Fraschetti, Feller, Fraschetti, Giacalone, Giacalone, Giacalone, J. Giacalone, Kóta, Matthaeus, Press, Qin, Wibberenz   +15 more
core   +2 more sources

Climatology of Pi2 Pulsations Deduced From the Wp Index

Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.
Abstract We examine the statistical properties of the Pi2 occurrence rate, especially the seasonal and universal‐time (UT) variations by analyzing the Wp index. The Wp index represents the wave power of Pi2 pulsations, and Pi2 events can be identified from the Wp index. We then examine the seasonal and UT variations of the Pi2 occurrence frequency. The
Shin'ya Nakano, Ryuho Kataoka, Masahito Nosé   +2 more
wiley   +1 more source

Observation of Kinetic Alfvén Waves inside an Interplanetary Coronal Mass Ejection Magnetic Cloud at 1 au

The Astrophysical Journal
Recent advancements have significantly enhanced our grasp of interplanetary coronal mass ejections (ICMEs) in the heliosphere. These observations have uncovered complex kinematics and structural deformations in ICMEs, hinting at the possible generation ...
Kishor Kumbhar, Anil Raghav, Omkar Dhamane, Kalpesh Ghag, Vinit Pawaskar, Zubair Shaikh, Ankush Bhaskar, Raffaella D’Amicis, Daniele Telloni   +8 more
doaj   +1 more source

Connecting the Sun and the Solar Wind: The First 2.5 Dimensional Self-consistent MHD Simulation under the Alfv\'en Wave Scenario

, 2012
The solar wind emanates from the hot and tenuous solar corona. Earlier studies using 1.5 dimensional simulations show that Alfv\'{e}n waves generated in the photosphere play an important role in coronal heating through the process of non-linear mode ...
Antolin, Banerjee, Bogdan, Cranmer, Dmitruk, Einaudi, Esser, Fedun, Hasan, Heyvaerts, Kudoh, Lamy, Matsumoto, Matsumoto, Matthaeus, Nishizuka, Okamoto, Perez, Steiner, Suzuki, Takeru Ken Suzuki, Takuma Matsumoto, Teriaca, Tsuneta, Van Ballegooijen, Verdini, Wilhelm, Yokoyama, Zangrilli   +28 more
core   +1 more source