Results 41 to 50 of about 194,727 (195)

Current Events at Saturn: Ring–Planet Electromagnetic Coupling

The Planetary Science Journal
This study presents a synthesized analysis of in situ and ground-based observations to investigate electromagnetic coupling between Saturn and its rings. During the Cassini Grand Finale, the magnetometer detected gradients in the azimuthal magnetic field
Omakshi Agiwal, Hao Cao, Hsiang-Wen Hsu, Luke Moore, Ali H. Sulaiman, James O’Donoghue, Michele K. Dougherty   +6 more
doaj   +1 more source

Neutral Wind Control of Jupiter's Non‐Auroral Ionosphere

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract We use JAMMIES (JAMMIES is Another Model Making Ionospheric EStimates), a new model of Jupiter's non‐auroral ionosphere, to demonstrate that neutral wind‐driven field‐aligned plasma transport can explain decades of measurements inconsistent with a solar‐dominated ionosphere. Two observations highlight these inconsistencies: a minimum in H3+ ${\
K. Mohamed, O. Agiwal, L. Moore, I. Mueller‐Wodarg, J. D. Huba, C. Martinis, T. Stallard, H. Melin   +7 more
wiley   +1 more source

Diagnosis of Combination Faults in a Planetary Gearbox using a Modulation Signal Bispectrum based Sideband Estimator [PDF]

, 2015
This paper presents a novel method for diagnosing combination faults in planetary gearboxes. Vibration signals measured on the gearbox housing exhibit complicated characteristics because of multiple modulations of concurrent excitation sources, signal ...
Gu, Fengshou, Rehab, Ibrahim, Ball, Andrew, Abdallaa, Gaballa M., Tian, Xiange   +4 more
core   +4 more sources

Electron Regulation of Proton Cyclotron Waves at Mars

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Proton cyclotron waves (PCWs), generated by the solar wind ionization and subsequent pickup of exospheric hydrogen, offer independent constraints on water loss from Mars. However, translating wave observations into quantitative escape rates has been hindered by an incomplete understanding of wave evolution, particularly the role of electron ...
Jingrun Chen, Zhenpeng Su, Zhiyong Wu, Yuming Wang   +3 more
wiley   +1 more source

Observational Analysis on the Relationship Between Chorus Waves and MeV Microburst Electron Precipitation

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Microbursts are thought to be a key contributor to radiation belt electron loss, with chorus waves considered a primary driver of this precipitation. However, the conditions under which chorus waves produce MeV electron loss remain poorly constrained.
Jorge Romero‐Minaya, Lauren W. Blum, Longzhi Gan, Xiao Chen   +3 more
wiley   +1 more source

IMF By‐Controlled Dawn–Dusk and Hemispheric Asymmetries of Kelvin–Helmholtz Waves and Reconnection Geometry Under Negative Dipole Tilt

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Along with magnetic reconnection, Kelvin‐Helmholtz (KH) waves are the main mechanisms controlling the solar wind‐magnetosphere interaction, enabling plasma transport into the magnetosphere due to secondary reconnection, diffusion and wave‐particle interactions.
L. Holappa, K. Nykyri, J. Laitinen, B. Burkholder   +3 more
wiley   +1 more source

Science opportunities with a double Langmuir probe and electric field experiment for JIMO

, 2005
The three icy Galilean moons of Jupiter: Callisto, Ganymede, and Europa, offer a range of exciting science opportunities for space physics and aeronomy. They all have thin atmospheres with residence times of a few days at most.
Morooka, M, Bale, S D, Blomberg, Lars,, Gurnett, D A, Wahlund, J E, Andre, M, Cumnock, Judy,, Eriksson, A I, Kurth, W S   +8 more
core   +1 more source

Observation of CO2++ dication in the dayside Martian upper atmosphere

Earth and Planetary Physics, 2020
Doubly charged positive ions (dications) are an important component of planetary ionospheres because of the large energy required for their formation.
Hao Gu, Jun Cui, DanDan Niu, LongKang Dai, JianPing Huang, XiaoShu Wu, YongQiang Hao, Yong Wei   +7 more
doaj   +1 more source

Experimental Study of the Response of Sheared E × B Flow to Varying Ion–Neutral Collisions

The Astrophysical Journal, 2023
Partially ionized plasma is a common occurrence in astrophysical and space environments. The emergence and development of plasma instabilities are significantly impacted by the inelastic collisions between the ions and neutrals in the partially ionized ...
Xiao Zhang, Yu Liu, Jiuhou Lei, Wenlong Huang, Kexin Huang, Rong Jin   +5 more
doaj   +1 more source

Chorus Element Repetition: Roles of Energetic Electron Injection and Nonlinear Wave Growth

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Chorus waves are coherent whistler‐mode emissions in Earth’s magnetosphere and play a key role in the acceleration and loss of radiation belt electrons. Their spectra commonly consist of discrete and repetitive elements, yet the mechanism governing this repetition is not fully understood.
Huayue Chen, Xueyi Wang, Lunjin Chen, Jiabei He, Zhiyang Xia, Rui Chen   +5 more
wiley   +1 more source