Results 51 to 60 of about 589 (178)

Impacts of Tidal Locking on Magnetospheric Energy Input to Exoplanet Atmospheres

The Astrophysical Journal
We investigate the effect of planetary corotation on energy dissipation within the magnetosphere–ionosphere system of exoplanets. Using magnetohydrodynamic simulations, we find that tidally locked exoplanets have a higher cross polar cap potential (CPCP)
Fatemeh Bagheri, Alex Glocer, Ramon E. Lopez   +2 more
doaj   +1 more source

Electromagnetic Ion Cyclotron Waves in the Initial Phase of Geomagnetic Storms

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Using simultaneous magnetic field observations from 10 satellites and an automated detection algorithm, we identify broad regions of electromagnetic ion cyclotron (EMIC) wave activity during the initial phases of geomagnetic storms between September 2015 and October 2019.
Taylor R. Whitney Aegerter, Lauren W. Blum   +1 more
wiley   +1 more source

Sources and Acceleration of Energetic Particles in Planetary Magnetospheres [PDF]

International Astronomical Union Colloquium, 1994
AbstractEnergetic particles in the magnetospheres of the solar system originate from various different sources, such as the solar wind, the planetary ionospheres as well as the moons and rings of the planetary systems. Important acceleration sites are the auroral regions, the magnetotail, and the equatorial regions of the magnetospheres where electric ...
openaire   +1 more source

The Dynamic Response of Jovian Magnetotail Reconnection to Enhanced Solar Wind Ram Pressure

The Astrophysical Journal
In this study, we employ the Grid Agnostic Magnetohydrodynamic (MHD) for Extended Research Applications (GAMERA), a high-resolving-power, three-dimensional global MHD model, to simulate magnetotail reconnection in Jupiter's magnetosphere.
Junjie Chen, Binzheng Zhang, Peter A. Delamere, Zhonghua Yao, Oliver Brambles   +4 more
doaj   +1 more source

Is the Magnetic Field Line Curvature Really Important for Energetic Electron Losses From the Radiation Belt?

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Recently, Hua et al. (2026, https://doi.org/10.1029/2025GL120881) combined observations during a 4‐day storm period with numerical simulations and concluded that the abrupt electron loss in the field‐line‐curvature scattering (FLCS) region played a leading role in shaping the outer boundary of radiation belt (RB); the authors conjectured that ...
V. A. Sergeev, N. A. Tsyganenko
wiley   +1 more source

Cassini UVIS Observations of the Enceladus Auroral Footprint on Saturn in 2017

The Planetary Science Journal
Ultraviolet Imaging Spectrograph (UVIS) observations show the Enceladus auroral footprint on Saturn on 2017 September 14, near the end of the Cassini mission.
Wayne R. Pryor, Fabiola P. Magalhães, Laurent Lamy, Renée Prangé, Larry W. Esposito, Jacques Gustin, Abigail M. Rymer, Ali H. Sulaiman   +7 more
doaj   +1 more source

MMS Observations of the Energetic Particles Within Kelvin‐Helmholtz Waves at the Boundary of the 10 May 2024 Coronal Mass Ejection (CME)

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract On 10 May 2024, Earth was hit by a CME that drove the largest geomagnetic storm in 20 years. Multi‐spacecraft observations previously showed that the ∼100 nT north‐south IMF bz ${b}_{z}$ variation was driven by Kelvin‐Helmholtz waves with wavelength ∼250 RE ${R}_{E}$ and reconnection jets in the ±z $\pm z$‐direction (Nykyri, 2024a, https://doi.
Katariina Nykyri, Neetasha Arya, Scott Boardsen, Guan Le, Harri Laakso, Lynn Wilson, Xuanye Ma, Katherine Holland, Brandon Burkholder, Leon Ofman, Kyoung‐Joo Hwang, Dinesh Radhakrishnan, Shiva Kavosi, Daniel Gershman, Christine Gabrielse, Barbara Giles, Stephen Fuselier, Jim Burch   +17 more
wiley   +1 more source

Off-equatorial Electron Trajectories in Ganymede’s Magnetosphere: Implications for a Bifurcated Ring Current Under Different Jovian Wind Conditions

The Astrophysical Journal
Ganymede, Jupiter’s largest moon, hosts a minimagnetosphere sustained by its intrinsic magnetic field and embedded in the sub-Alfvénic Jovian plasma flow, providing a unique natural laboratory for studying energetic particle behavior. By combining a test-
Tao Yan, Yiqun Yu, Depeng An, Longxing Ma, Binzheng Zhang, Junjie Chen, Fan Gong, Kun Bai, Xiaoshu Wu   +8 more
doaj   +1 more source

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

Foreshock Ultralow Frequency Waves at Mars: Consequence on the Particle Acceleration Mechanisms at the Martian Bow Shock

The Astrophysical Journal
Using Mars Atmosphere and Volatile EvolutioN Magnetometer observations, we report the first statistical study of ultralow frequency (ULF) waves at the Martian foreshock.
Nahuel Andrés, Norberto Romanelli, Christian Mazelle, Li-Jen Chen, Jacob R. Gruesbeck, Jared R. Espley   +5 more
doaj   +1 more source