Results 61 to 70 of about 838 (214)

Global Occurrence of Kelvin‐Helmholtz Vortices at Mars

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract We analyzed six Kelvin‐Helmholtz (K‐H) vortex events from Mars Atmosphere and Volatile EvolutioN (MAVEN) measurements. We found that fully developed vortices can occur at Mars' equatorial flanks and in the southern hemisphere, while they were previously observed only in the northern hemisphere.
Ze‐Wen Koh, Gangkai Poh, Christopher M. Fowler, Kathleen Gwen Hanley, Xuanye Ma, Jacob R. Gruesbeck, Dona Chathuni P. Kuruppuaratchi, Weijie Sun, Gina A. DiBraccio, Jared Randolph Espley   +9 more
wiley   +1 more source

Solar Orbiter Observations of a Self‐Consistent Ion‐Scale Magnetic Hole at 0.9AU

Geophysical Research Letters, Volume 52, Issue 22, 28 November 2025.
Abstract Magnetic holes (MHs) are localized structures characterized by magnetic field depressions, accompanied by an enhancement in plasma thermal pressure. These pressure‐balanced structures span a broad range of scales in space, from fluid to kinetic regimes. The kinetic‐scale MHs are ubiquitous in the solar wind; however, the exploration is limited
Jing‐Huan Li, Yuri V. Khotyaintsev, Daniel B. Graham, Timothy Horbury, Philippe Louarn   +4 more
wiley   +1 more source

SPECTRAL INDICES FOR MULTI-DIMENSIONAL INTERPLANETARY TURBULENCE AT 1 AU

The Astrophysical Journal, 2009
We examine Advanced Composition Explorer and Helios 1 data in search of evidence for an anisotropic spectrum of interplanetary magnetic and velocity field fluctuations. Specifically, we focus on the power-law indices of the fluctuation spectra and associated second-order structure functions and ask whether the index varies systematically with the angle
Jeffrey A. Tessein, Charles W. Smith, Benjamin T. MacBride, William H. Matthaeus, Miriam A. Forman, Joseph E. Borovsky   +5 more
openaire   +1 more source

Significant Amplification of Turbulent Energy Dissipation Through the Shock Transition at Mars

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract Turbulence is fundamental to energy transfer across scales in space and astrophysical plasmas. Bow shock interactions have long been hypothesized to significantly modify turbulence in planetary environments, yet the quantification of such effects and their parametric dependencies remain largely unaddressed.
Wence Jiang, Hui Li, Nahuel Andrés, Lina Hadid, Daniel Verscharen, Chi Wang   +5 more
wiley   +1 more source

Axial Flux Evolution of Small-scale Magnetic Flux Ropes from 0.06 to 10 au

The Astrophysical Journal Letters
Small-scale magnetic flux ropes (SMFRs) fill much of the solar wind, but their origin and evolution are debated. We apply our recently developed, improved Grad–Shafranov algorithm for the detection and reconstruction of SMFRs to data from Parker Solar ...
Hameedullah Farooki, Jeongwoo Lee, Francesco Pecora, Haimin Wang, Hyomin Kim   +4 more
doaj   +1 more source

Evolution of Interplanetary Small Magnetic Flux Ropes Across Earth's Bow Shock: Global Hybrid Modeling

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract Previous studies indicate that small magnetic flux ropes occupy ∼one third of solar‐wind intervals, yet their appearance in the magnetosheath remains unclear. We use the AuburN Global hybrid CodE in three Dimension (ANGIE3D) to investigate their evolution as they cross Earth's bow shock.
Xiaolei Li, Ying‐Dong Jia, Xueyi Wang, Hanying Wei, Terry Z. Liu, Yu Lin, Kun Zhang   +6 more
wiley   +1 more source

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

, 2022
Roque Márquez Rodríguez, L. Sorriso‐Valvo, Emiliya Yordanova   +2 more
openalex   +3 more sources

Soft X‐Ray Imaging of Dense and Fast Magnetosheath Jets: Numerical Simulations

Earth and Space Science, Volume 12, Issue 11, November 2025.
Abstract The goal of this paper is to estimate the soft X‐ray signature associated with dense and fast magnetosheath jets streaming toward the dayside magnetosphere. We developed a non‐self‐consistent kinematic approach for simulating numerically the transport of high‐speed plasma jets in the magnetosheath.
G. Voitcu, M. Echim, M. Teodorescu, C. Munteanu   +3 more
wiley   +1 more source

Formation of H+ PUI Tails Downstream of Distant Interplanetary Shocks

The Astrophysical Journal
New Horizons’ Solar Wind Around Pluto (SWAP) instrument has observed interplanetary shocks from ∼20 to 60 au from the Sun. Different studies have analyzed the effects of these shocks on the solar wind ion (SWI) and interstellar pickup ion (PUI ...
E. J. Zirnstein, D. J. McComas, B. L. Shrestha, H. A. Elliott, P. C. Brandt, S. A. Stern, A. R. Poppe, J. Parker, E. Provornikova, K. Singer, A. Verbiscer, New Horizons Heliophysics Team   +11 more
doaj   +1 more source

TRANSPORT EQUATION FOR MHD TURBULENCE: APPLICATION TO PARTICLE ACCELERATION AT INTERPLANETARY SHOCKS

The Astrophysical Journal, 2009
The aim of the present paper is to unify the various transport equations for turbulent waves that are used in different areas of space physics. Here, we mostly focus on the magnetohydrodynamic turbulence, in particular the Alfvenic turbulence. The applied methods, however, are general and can be extended to other forms of turbulence, for example the ...
Sokolov, Igor V., Roussev, Ilia I., Skender, Marina, Gombosi, Tamas I., Usmanov, Arcadi V.   +4 more
openaire   +3 more sources