Results 51 to 60 of about 311 (97)

Three‐Dimensional Global Hybrid Simulations of Plasma Transport and Energy Conversion During Solar Wind‐Magnetosphere Interactions

open access: yesGeophysical Research Letters, Volume 52, Issue 17, 16 September 2025.
Abstract Plasma transport and energy conversion during solar wind‐magnetosphere interactions under northward, southward, and radial interplanetary magnetic fields (IMFs) are examined using three‐dimensional global hybrid simulations. Energy conversion and entry of plasma and energy are weaker when the IMF is northward.
San Lu   +6 more
wiley   +1 more source

Statistical Properties of Cavitons and Spontaneous Hot Flow Anomalies in a Global Hybrid-Vlasov Magnetosphere Simulation [PDF]

open access: yes, 2020
The magnetic field of Earth interacts with the supersonic solar wind that emanates from the outer part of the Sun’s atmosphere. The interaction results in the formation of Earth’s magnetosphere with a bow shock and a foreshock upstream of it. Together,
Tarvus, Vertti
core  

Stability of the Earth's Dayside Magnetosheath: Effects of Upstream Solar Wind Structures and Downstream Jets

open access: yesJournal of Geophysical Research: Space Physics, Volume 130, Issue 9, September 2025.
Abstract The constant stream of plasma from the Sun, the solar wind, forms a bow shock as it interacts with Earth's magnetic field. The plasma properties change drastically as it crosses the shock and enter the downstream magnetosheath. This extended region hosts various kinetic ion plasma instabilities, such as mirror modes, ion cyclotron waves, and ...
Florian Koller   +10 more
wiley   +1 more source

On the Kinetic Energy Input of Magnetosheath Jets Into the Magnetosheath

open access: yesGeophysical Research Letters, Volume 52, Issue 15, 16 August 2025.
Abstract Magnetosheath jets, plasma structures with enhanced dynamic pressure, are frequently observed in the terrestrial magnetosheath. However, their mass, momentum, and energy content are still unknown. We utilize Amitis, a 3D hybrid‐kinetic plasma simulation, to study the mass, momentum, and energy content of jets in the subsolar magnetosheath.
Eva Krämer   +4 more
wiley   +1 more source

Role of ULF Waves in Reforming the Martian Bow Shock

open access: yesAGU Advances, Volume 6, Issue 4, August 2025.
Abstract Understanding the nature of planetary bow shocks is beneficial for advancing our knowledge of solar wind interactions with planets and fundamental plasma physics processes. Here, we utilize data from the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft to investigate the Martian bow shock, revealing its distinctive characteristics ...
Chi Zhang   +12 more
wiley   +1 more source

Earthquakes: from chemical alteration to mechanical rupture

open access: yes, 1998
In the standard rebound theory of earthquakes, elastic deformation energy is progressively stored in the crust until a threshold is reached at which it is suddenly released in an earthquake.
Abercrombie   +276 more
core   +1 more source

Predictions for the Shape and Orientation of Earth's Foreshock Radiation Sources

open access: yesJournal of Geophysical Research: Space Physics, Volume 130, Issue 7, July 2025.
Abstract Radio emission produced in Earth's foreshock is due to the bow shock reflecting some electrons back upstream into the foreshock, where they produce Langmuir waves and radio emissions near the electron plasma frequency fp ${f}_{p}$ and near 2fp $2{f}_{p}$.
Iver H. Cairns, Patrick Oppel
wiley   +1 more source

First Observations of a Foreshock Bubble at Earth: Implications for Magnetospheric Activity and Energetic Particle Acceleration [PDF]

open access: yes
Earth?s foreshock, which is the quasi-parallel region upstream of the bow shock, is a unique plasma region capable of generating several kinds of large-scale phenomena, each of which can impact the magnetosphere resulting in global effects. Interestingly,
Angelopoulos, V.   +3 more
core   +1 more source

Field‐Aligned Proton Beams Upstream of the Martian Bow Shock: First Observations

open access: yesGeophysical Research Letters, Volume 52, Issue 11, 16 June 2025.
Abstract We report fast sunward‐propagating energetic proton field‐aligned beams (FABs) observed about one Mars radius upstream of the Martian bow shock, recorded by the Solar Wind Ion Analyzer instrument on the MAVEN spacecraft. The velocity distributions show that all the beams have a bulk parallel speed vB=(1.35±0.21)VS ${v}_{B}=(1.35\pm 0.21){V}_{S}
K. Meziane   +7 more
wiley   +1 more source

Magnetosheath Filamentary Structures Formed by Ion Acceleration at the Quasi-Parallel Bow Shock [PDF]

open access: yes
Results from 2.5-D electromagnetic hybrid simulations show the formation of field-aligned, filamentary plasma structures in the magnetosheath. They begin at the quasi-parallel bow shock and extend far into the magnetosheath.
Gutynska, O.   +3 more
core   +1 more source

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