Results 31 to 40 of about 306,228 (194)

Multispacecraft Energetic Particle Enhancements Associated with a Single Corotating Interaction Region

The Astrophysical Journal
The radial evolution of particles accelerated at corotating interaction regions (CIRs) is not fully understood, particularly the distance range over which this particle acceleration occurs and how the energy spectra are modulated by transport through the
M. J. Starkey, M. A. Dayeh, M. I. Desai, R. Bučík, S. T. Hart, H. A. Elliott   +5 more
doaj   +1 more source

Europa's Neutral Sodium Exosphere Is Quasi‐Stable Over Decades

Journal of Geophysical Research: Space Physics, Volume 131, Issue 10, October 2026.
Abstract Europa's sodium cloud is thought to be modified by its orbital longitude and by its plasma environment, which modulates with Jovian magnetic geometry. To explore and quantify sodium cloud variability, seven sets of Keck I/HIRES measurements are compared providing comprehensive coverage of orbital and magnetic geometry.
Emma L. Lovett, Carl A. Schmidt, Zachariah Milby, Sean P. Ellis, Jamey R. Szalay   +4 more
wiley   +1 more source

Cataloging Stream Interaction Regions at MAVEN: A Cross-comparative Study with STEREO-A

The Astrophysical Journal
Stream interaction regions (SIRs) are long-lasting solar wind structures that result from stable fast solar wind interacting with preceding slow solar wind.
Sarah A. Henderson, Rachael J. Filwett, Robert C. Allen, Christina O. Lee, Jasper S. Halekas, Jared R. Espley, Antoinette Galvin, Hanying Wei   +7 more
doaj   +1 more source

Interplanetary Shocks between 0.3 and 1.0 au: Helios 1 and 2 Observations

The Astrophysical Journal, 2023
The Helios 1 (H1) and Helios 2 (H2) spacecraft measured the solar winds at a distance between ∼0.3 and 1.0 au from the Sun. With increasing heliocentric distance ( r _h ), the plasma speed is found to increase at ∼34–40 km s ^−1 au ^−1 and the density ...
Rajkumar Hajra, Bruce T. Tsurutani, Gurbax S. Lakhina, Quanming Lu, Aimin Du, Lican Shan   +5 more
doaj   +1 more source

The Effects of ICME Composition on the Sputtered Component of the Lunar Exosphere

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Charged‐particle sputtering is a fundamental process that contributes to the generation of the Moon’s neutral exosphere. Neutral sputtering rates are dependent on the speed, flux, and composition of the incident charged‐particle populations, all of which are variable at the Moon’s orbit.
A. R. Poppe, Q. Nénon, P. S. Szabo, S. R. Carberry Mogan, C. O. Lee   +4 more
wiley   +1 more source

Latitudinal variation of solar wind corotating stream interaction regions: Ulysses

Geophysical Research Letters, 1993
Ulysses‧ initial transit to high heliographic latitudes at a heliocentric distance of ∼5 AU has revealed systematic effects in the latitudinal evolution of corotating interaction regions (CIRs). At a latitude corresponding roughly to, but slightly less than, the inferred tilt of the coronal streamer belt and embedded heliospheric current sheet, the ...
J. T. Gosling, S. J. Bame, D. J. McComas, J. L. Phillips, V. J. Pizzo, B. E. Goldstein, M. Neugebauer   +6 more
openaire   +1 more source

Turbulence Properties of Corotating Interaction Regions at 1 au: A Comprehensive Superposed Epoch Analysis

The Astrophysical Journal
We perform a comprehensive superposed epoch analysis of more than 200 corotating interaction regions (CIRs) using WIND spacecraft observations at 1 au.
Yuliang Ding, Chen Shi, Marco Velli, Zesen Huang, Nikos Sioulas   +4 more
doaj   +1 more source

Finding Novel Precursors for Solar Wind Stream Interaction Regions With Interpretable Deep Learning

Space Weather, Volume 24, Issue 10, October 2026.
Abstract Solar wind stream interaction regions (SIRs) drive recurrent geomagnetic storms, yet most existing catalogs rely on expert inspection and simple thresholds that are subjective and can miss events with complex morphologies. We present SIREN (SIR Encoder Network), a lightweight Transformer‐based model for per‐timestep SIR detection from in situ ...
Prateek Mayank, Yogesh, Enrico Camporeale, D. Chakrabarty, Lan K. Jian, Gregory G. Howes, Thomas E. Berger   +6 more
wiley   +1 more source

Relativistic-electron dropouts and recovery: A superposed epoch study of the magnetosphere and the solar wind [PDF]

, 2009
During 124 high-speed-stream-driven storms from two solar cycles, a multispacecraft average of the 1.1–1.5 MeV electron flux measured at geosynchronous orbit is examined to study global dropouts of the flux. Solar wind and magnetospheric measurements are
Denton, Michael H., Borovsky, J. E.
core   +3 more sources

Impact of Junction Angle on Density‐Driven Secondary Flow and Mixing Rates at River Confluences: A Numerical Investigation

Water Resources Research, Volume 62, Issue 10, October 2026.
Abstract It is now well understood that a small difference in the density (Δρ) $({\Delta }\rho )$ of two rivers can cause density‐driven streamwise vortices (SOVs) to form and their mixing interface to tilt downstream of their confluence. However, much less knowledge exists pertaining to how these processes are affected by other key confluence ...
Abdelrahman Hosny Abdou, Jason Duguay, Pascale Biron, Jay Lacey   +3 more
wiley   +1 more source