Results 31 to 40 of about 5,027 (230)

UVMag: stellar formation, evolution, structure and environment with space UV and visible spectropolarimetry

open access: yes, 2014
Important insights into the formation, structure, evolution and environment of all types of stars can be obtained through the measurement of their winds and possible magnetospheres.
Baade, D.   +12 more
core   +4 more sources

Spatial Scales of Electron Density Fluctuations in the Martian Ionosphere

open access: yesThe Astrophysical Journal
In recent Martian ionospheric studies, the spatial scales of electron density irregularities have been computed using magnetic field measurements by treating these fluctuations as electromagnetic.
Chougule Prathmesh   +2 more
doaj   +1 more source

Bounce Resonance Between ULF Waves and Electrons in the Dayside Outer Magnetosphere

open access: yesGeophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Resonant interactions between ultra‐low‐frequency (ULF) waves and particles are critical for energy transfer in the Earth's magnetosphere, and have been extensively investigated in the inner magnetosphere. However, resonant processes between ULF waves and electrons in the dayside outer magnetosphere remain largely unexplored.
Zi‐He Zhao   +10 more
wiley   +1 more source

The Threatening Environment of the TRAPPIST-1 Planets

open access: yes, 2017
Recently, four additional Earth-mass planets were discovered orbiting the nearby ultracool M8 dwarf TRAPPIST-1, making a remarkable total of seven planets with equilibrium temperatures compatible with the presence of liquid water on their surface ...
Alvarado-Gomez, Julian D.   +4 more
core   +1 more source

Power Spectral Characteristics of Martian Ionospheric Irregularities

open access: yesThe Astrophysical Journal
The intrinsic magnetic field of a planet plays a key role in its ionospheric dynamics. Mars lacks a global magnetic field, thus ionospheric plasma is weakly coupled to crustal and induced magnetic field.
Chougule Prathmesh   +2 more
doaj   +1 more source

Occurrence of Flat‐Top Electron Velocity Distributions in Magnetotail Plasma Jets

open access: yesGeophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Non‐Maxwellian electron velocity distributions (eVDFs) are ubiquitous in collisionless plasmas. For example, various types of non‐Maxwellian eVDFs exist in magnetic reconnection jets in the Earth's magnetotail. At thermal energies, eVDF can be flat‐topped due to electron trapping associated with magnetic reconnection.
L. Richard   +2 more
wiley   +1 more source

An Estimate of the Importance of Electron-stimulated Desorption of Sodium at Mercury

open access: yesThe Planetary Science Journal
We revisit the importance of electron-stimulated Desorption (ESD) as a source of neutral sodium (Na) atoms and Na ^+ ions in Mercury’s exosphere and ionosphere.
Rosemary M. Killen   +5 more
doaj   +1 more source

The Drag of Ionosphere Plasma Drifts on Thermospheric Zonal Winds During the 10–12 May 2024 Superstorm

open access: yesGeophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract The observations from GRACE‐FO and DMSP satellites are utilized to analyze the ion‐neutral interaction near dusk during the 10–12 May 2024 super‐storm. The horizontal plasma convection dragged the anti‐sunward wind in the polar cap and sunward winds around the auroral and subauroral regions during whole storm times.
Ruilong Zhang   +6 more
wiley   +1 more source

Stellar Coronal and Wind Models: Impact on Exoplanets

open access: yes, 2017
Surface magnetism is believed to be the main driver of coronal heating and stellar wind acceleration. Coronae are believed to be formed by plasma confined in closed magnetic coronal loops of the stars, with winds mainly originating in open magnetic field
A Maggio   +162 more
core   +1 more source

The Colocation of Magnetic Reconnection and Current Disruption in Jovian Middle Magnetosphere

open access: yesThe Astrophysical Journal Letters
Magnetic reconnection and current disruption are two key processes in driving energy conversion and dissipation in planetary magnetospheres. At the Earth, the two processes usually occur at different locations: the current disruption process occurs more ...
Dong-Xiao Pan   +14 more
doaj   +1 more source

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