Results 101 to 110 of about 916,158 (245)

Spectral Properties and Energy Injection in Mercury's Magnetotail Current Sheet

open access: yesGeophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Mercury's magnetotail hosts a thin and highly dynamic current sheet (CS), where magnetic reconnection and strong fluctuations frequently occur. Here, we statistically analyze magnetic field power spectra across 370 magnetotail CSs observed by MESSENGER.
Xinmin Li   +10 more
wiley   +1 more source

Martian Atmospheric Loss Through Foreshock Transient Events

open access: yesGeophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract At Mars, the MAVEN spacecraft has made observations of Hot Flow Anomalies (HFAs) in the foreshock. Due to the bow shock's proximity to the planet, it is theorized that HFAs contribute to atmospheric escape at Mars through the excavation of ionospheric ions.
Alexandros C. Cooke‐Politikos   +5 more
wiley   +1 more source

Nonthermal Acceleration of Electrons, Positrons, and Protons at a Nonrelativistic Quasi-parallel Collisionless Shock

open access: yesThe Astrophysical Journal
Energetic positrons have been observed in the interstellar medium, and high-energy positrons with relativistic energies up to approximately 1 TeV have been detected in Galactic cosmic rays.
Huan Yu, Qi Xia, Jun Fang
doaj   +1 more source

Heliospheric consequences of solar activity in geophysical and interplanetary phenomena [PDF]

open access: yesGeofísica Internacional, 2004
We have done an analysis of the total solar magnetic flux, polar coronal hole area and sunspots. We investigate their long term evolution over several solar cycles and their possible relationship with interplanetary shocks, sudden storm commencements at ...
D. Maravilla   +2 more
doaj  

A tale of two shocks

open access: yesAstronomy & Astrophysics
Context. Energetic particles in interplanetary space are normally measured on timescales that are long compared to the ion gyroperiod. Such observations by necessity average out the microphysics associated with the acceleration and transport of 10 s–100 ...
Wimmer-Schweingruber R. F.   +25 more
doaj   +1 more source

Evolution of Electron Acceleration by Corotating Interaction Region Shocks at 1 au

open access: yesThe Astrophysical Journal Letters
We present the first observations of in situ electron acceleration at corotating interaction region (CIR) shocks near 1 au, utilizing measurements from Wind and Magnetospheric Multiscale (MMS) mission in the interplanetary medium. As the forward (reverse)
Xinnian Guo   +6 more
doaj   +1 more source

Ion Acoustic Wave Observations Near Low-Mach Reverse Shocks

open access: yesThe Astrophysical Journal
Interactions between particles and ion acoustic waves (IAWs) are considered a potential energy dissipation mechanism in low-Mach number shocks, particularly in forward shocks. However, their role in reverse shocks remains unclear.
Xianghan Wang   +3 more
doaj   +1 more source

Plasma Environment, Radiation, Structure, and Evolution of the Uranian System (PERSEUS): A Dedicated Orbiter Mission Concept to Study Space Physics at Uranus. [PDF]

open access: yesSpace Sci Rev, 2023
Cohen IJ   +13 more
europepmc   +1 more source

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