Results 61 to 70 of about 252,334 (205)

Inferring Rippled Shock Front Dispersion Parameters From Reflected Ion Population Clusters

Journal of Geophysical Research: Space Physics, Volume 131, Issue 11, November 2026.
Abstract Supercritical, collisionless shockwaves are known to exhibit nonstationarity, that is, time‐dependent structures even under steady upstream conditions, which can contribute to heating and particle acceleration. We examine the evolution of shock surface ripples (an example of nonstationary) by analyzing Magnetospheric Multiscale (MMS ...
H. E. Cornfield, I. Gingell
wiley   +1 more source

Electron Heating in 2D Particle-in-cell Simulations of Quasi-perpendicular Low-beta Shocks

The Astrophysical Journal
We measure the thermal electron energization in 1D and 2D particle-in-cell simulations of quasi-perpendicular, low-beta ( β _p = 0.25) collisionless ion–electron shocks with mass ratio m _i / m _e = 200, fast Mach number ${{ \mathcal M }}_{\mathrm{ms}}=1$
Aaron Tran, Lorenzo Sironi
doaj   +1 more source

Acceleration of an interplanetary shock through the magnetosheath: a global hybrid simulation

Frontiers in Astronomy and Space Sciences
According to most observations and simulations, interplanetary shocks slow down when they propagate through the magnetosheath. In this article, we present results from a self-consistent global hybrid PIC simulation of an interplanetary shock which, by ...
C. Moissard, C. Moissard, P. Savoini, D. Fontaine, R. Modolo   +4 more
doaj   +1 more source

On the solar origin of interplanetary disturbances observed in the vicinity of the Earth [PDF]

Annales Geophysicae, 2003
The solar origin of 40 interplanetary disturbances observed in the vicinity of the Earth between January 1997 and June 1998 is investigated in this paper.
N. Vilmer, M. Pick, R. Schwenn, P. Ballatore, J. P. Villain   +4 more
doaj   +1 more source

Dynamical Solar Wind Forecasting Using In Situ Solar Wind Speed Observations

Space Weather, Volume 24, Issue 11, November 2026.
Abstract Accurate prediction of the ambient solar wind at Earth is a key requirement for space‐weather forecasting but is limited by uncertainties in coronal boundary conditions and, to a lesser extent, heliospheric transport. We present a quantitative assessment of a solar wind forecast that uses near‐Earth in situ solar wind observations to estimate ...
M. J. Owens, L. A. Barnard, H. Turner, C. N. Arge   +3 more
wiley   +1 more source

High-resolution Observations of Pickup-ion-mediated Shocks to 60 au

The Astrophysical Journal
This study provides a detailed analysis of 14 distant interplanetary shocks observed by the Solar Wind Around Pluto instrument on board New Horizons.
Bishwas L. Shrestha, David J. McComas, Eric J. Zirnstein, George Livadiotis, Heather A. Elliott, Pontus C. Brandt, Alan Stern, Andrew R. Poppe, Joel Parker, Elena Provornikova, Kelsi Singer, Anne Verbiscer, New Horizons Heliophysics Team   +12 more
doaj   +1 more source

Magnetic Discontinuities in the Inner Heliosphere: Do Intermediate Shocks Exist?

The Astrophysical Journal, 2023
Magnetic discontinuities are fundamental structures in space and laboratory plasmas where the changes in magnetic and velocity fields are constrained by Rankine–Hugoniot relations.
Y. Y. Liu, H. S. Fu, J. B. Cao, Z. Wang, R. J. He, Z. Z. Guo, C. X. Du   +6 more
doaj   +1 more source

Flux Reconstruction With Machine Learning Techniques for the ESA JUICE Mission Radiation Monitor, RADEM

Space Weather, Volume 24, Issue 11, November 2026.
Abstract Solar energetic particles (SEPs) are a significant space weather hazard to spacecraft. For Radiation Hardness Assurance (RHA) in future space missions, it is important to characterize the differential flux spectra of SEP events. In this paper, we present a machine learning model developed for reconstructing the differential flux spectrum from ...
Rafael Parente, Marco Pinto, Inês Ochoa, António Gomes, Patrícia Gonçalves   +4 more
wiley   +1 more source

Shock parameter calculations at weak interplanetary shock waves [PDF]

Annales Geophysicae, 2005
Abstract. A large set of interplanetary shock waves observed using the Ulysses spacecraft is analysed in order to determine their local parameters. For the first time a detailed analysis is extended to the thermodynamic properties of a large number of events. The intention is to relate the shock parameters to the requirements set by MHD shock theory. A
Gloag, J. M., Balogh, A.
openaire   +4 more sources

Energy Spectra of High Energy Helium An Extended and Improved Data Product From SOHO EPHIN

Space Weather, Volume 24, Issue 11, November 2026.
Abstract Context. The Electron Proton Helium INstrument (EPHIN) aboard the SOlar and Heliospheric Observatory (SOHO) is a particle telescope that measures energetic protons and Helium particles with kinetic energies above 4 MeV/nuc and electrons with kinetic energies above 150 KeV. Located at the Lagrangian point L1 of the Earth‐Sun system, it provides
M. Hörlöck, B. Heber, S. Jensen, M. Köberle, P. Kühl, H. Sierks   +5 more
wiley   +1 more source