Results 71 to 80 of about 606 (259)

The electric wind of Venus: A global and persistent “polar wind”‐like ambipolar electric field sufficient for the direct escape of heavy ionospheric ions

Geophysical Research Letters, 2016
Understanding what processes govern atmospheric escape and the loss of planetary water is of paramount importance for understanding how life in the universe can exist.
Glyn A. Collinson, Rudy A. Frahm, Alex Glocer, Andrew J. Coates, Joseph M. Grebowsky, Stas Barabash, Shawn D. Domagal‐Goldman, Andrei Fedorov, Yoshifumi Futaana, Lin K. Gilbert, George Khazanov, Tom A. Nordheim, David Mitchell, Thomas E. Moore, William K. Peterson, John D. Winningham, Tielong L. Zhang   +16 more
doaj   +1 more source

Multiple‐Event Study of Substorm Electric Field Penetration Into Middle Latitudes Based on Simultaneous Observation of 630‐nm Airglow Enhancements at Three Stations

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract It is known that convection electric fields develop in the polar region associated with substorm onset, and a westward electric field penetrates to lower latitudes on the night side. Two‐dimensional observations of 630‐nm airglow enhancements associated with the westward electric field can be conducted using all‐sky cameras at middle latitudes.
S. Morita, K. Shiokawa, Y. Otsuka, N. Nshitani, A. Shinbori, A. Fujimoto, A. Yoshikawa, M. Nishioka, S. Perwitasari, M. Yamamoto, T. Sori   +10 more
wiley   +1 more source

Daytime Thermospheric Wind Transients and Circulation in May 2021

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract Changes in the thermospheric wind originating in storm‐time transients in high‐latitude Joule heating and ion circulation are effective in modifying conditions throughout Earth's upper atmosphere and ionosphere. Among the effects these drivers can produce are large‐scale gravity waves (GWs), characterized by significant wind transients that ...
Thomas J. Immel, Lily Oglesby, Brian J. Harding, Astrid Maute, Yen‐Jung Wu, Romina Nikoukar, Colin Triplett   +6 more
wiley   +1 more source

Heating of the Atmospheres of Short-orbit Exoplanets by Their Rapid Orbital Motion through an Extreme Space Environment

The Astrophysical Journal
Exoplanets with short orbit periods reside very close to their host stars. They transition very rapidly between different sectors of the circumstellar space environment along their orbit, leading to large variations of the magnetic field in the vicinity ...
Ofer Cohen, Alex Glocer, Cecilia Garraffo, Julián D. Alvarado-Gómez, Jeremy J. Drake, Kristina Monsch, Farah Fauth Puigdomenech   +6 more
doaj   +1 more source

Statistical properties of hot flow anomalies around Mars

Earth and Planetary Physics
Hot flow anomalies (HFAs) are not only a terrestrial phenomenon, but also a solar-system-wide phenomenon, one that can cause significant perturbations in planetary magnetospheres and ionospheres.
MingYu Wu, HeYin Wang, Lei Wang, GuoQiang Wang, SuDong Xiao, YangJun Chen, Qi Lü, Peng E, AiMin Du, TieLong Zhang   +9 more
doaj   +1 more source

A Global Map of Average Electron Densities in the Magnetosphere of Saturn

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract Measurements from the Cassini Radio and Plasma Wave Science (RPWS) experiment obtained during the entire orbital phase of the Cassini mission around Saturn (13.2 years) are processed into a meridional map of plasma densities, comprising the innermost region of the ring ionosphere, the Enceladus plasma torus, and the outer magnetosphere, up to ...
Ulrich Taubenschuss, Ondřej Santolík, David Píša, Masafumi Imai, Georg Fischer, Siyuan Wu, Michiko W. Morooka, William S. Kurth   +7 more
wiley   +1 more source

Revealing the CME Impact on the Martian Nightside Ionosphere Based on MAVEN and Tianwen-1 Observations

The Astrophysical Journal
Due to the absence of an Earth-like dipole magnetic field, the impact of coronal mass ejections (CMEs) on the Martian nightside ionosphere differs from that on Earth and is still not well understood.
Longhui Liu, Xinzhi Qiu, Yiqun Yu, Wudi Luo, Xin Wang, Jinbin Cao, Cunhui Li, YuMing Wang, TieLong Zhang   +8 more
doaj   +1 more source

Viscous Forces in Velocity Boundary Layers around Planetary Ionospheres [PDF]

, 1999
H. Pérez‐de‐Tejada
openalex   +1 more source

Dominant Trends in Jupiter's H3+ ${\mathbf{H}}_{\mathbf{3}}^{\mathbf{+}}$ Northern Aurora: II. Magnetospheric Mapping

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract Jupiter's auroral regions have previously been defined by broad‐scale auroral structures, but these are typically obscured by the wide array of temporal variability observed at timescales between minutes and days, making it difficult to understand the underlying magnetospheric biases driving these brightness differences.
Tom S. Stallard, Katie L. Knowles, Henrik Melin, Ruoyan Wang, Emma M. Thomas, Luke Moore, James O’Donoghue, Rosie E. Johnson, Steve Miller, John C. Coxon   +9 more
wiley   +1 more source

Bridging Model–Data Discrepancies in Mars’ Dayside Ionosphere: Exploring Varying Reaction Rate Coefficients

The Astrophysical Journal
Measurements of concentrations of neutral and ion species in the upper atmosphere of Mars by the Neutral Gas and Ion Mass Spectrometer (NGIMS) on board the Mars Atmosphere and Volatile EvolutioN mission have served as model input and/or for comparison ...
M. Persson, E. Vigren
doaj   +1 more source