Results 71 to 80 of about 934,352 (223)
Characteristics of Solar Wind Density Depletions During Solar Cycles 23 and 24 [PDF]
Journal of Astronomy and Space Sciences, 2017 Solar wind density depletions are phenomena that solar wind density is rapidly decreased and keep the state. They are generally believed to be caused by the interplanetary (IP) shocks.
Keunchan Park +4 more
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On the Formation of Super-Alfvénic Flows Downstream of Collisionless Shocks
The Astrophysical JournalSuper-Alfvénic jets, with kinetic energy densities significantly exceeding that of the solar wind, are commonly generated downstream of Earth's bow shock under both high- and low-beta plasma conditions. In this study, we present theoretical evidence that
Adnane Osmane, Savvas Raptis
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 +6 more
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Collisionless Shocks: Contemporary State After Three Quarters of a Century of Research
Reviews of Geophysics, Volume 64, Issue 3, September 2026.Abstract The collisionless shock research started in the late 1950s. Since then, plenty of data have been accumulated due to the large number of missions in the heliosphere, providing in situ measurements of the fields and particles. The quality of these measurements has vastly improved, especially in the last two decades.
M. Gedalin +2 more
wiley +1 more source
Turbulence and Polytropic Changes across Interplanetary Shocks Observed by the Parker Solar Probe
The Astrophysical Journal LettersInterplanetary shocks play a critical role in solar wind dynamics, influencing the properties of turbulence and thermodynamic processes. In this study, we statistically analyze changes in turbulence characteristics and polytropic indices across 37 quasi ...
Yiming Jiao +5 more
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Interpretation of Flat Energy Spectra Upstream of Fast Interplanetary Shocks
The Astrophysical Journal, 2023 Interplanetary shocks are large-scale heliospheric structures often caused by eruptive phenomena at the Sun, and represent one of the main sources of energetic particles.
Silvia Perri +8 more
doaj +1 more source
Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.Abstract The bow shock current (BSC) flows on the bow shock due to the compression of the interplanetary magnetic field (IMF) across the shock. Although previous studies have shown that the BSC can connect to magnetospheric current systems via the magnetosheath, it is still not known how this happens.
G. Semrén +10 more
wiley +1 more source
Editorial to the Special Issue “Propagation of Coronal Mass Ejections”
Universe, 2023 Coronal mass ejections (CMEs) and their associated shocks are one of the main drivers of heliosphere variability, causing both interplanetary and planetary perturbations [...]
Mateja Dumbović, Fang Shen
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Electromagnetic waves and electron anisotropies downstream of supercritical interplanetary shocks [PDF]
, 2012 We present waveform observations of electromagnetic lower hybrid and whistler waves with fci ≪ f 1.01. Thus, the whistler mode waves appear to be driven by a heat flux instability and cause perpendicular heating of the halo electrons.
L. Wilson +11 more
semanticscholar +1 more source
MMS Observations of Multi‐Species Wave‐Particle Interactions and Rapid Foreshock Evolution
Journal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.Abstract The ion foreshock is the region upstream of Earth's bow shock where magnetic field lines connect to the quasi‐parallel shock surface. Within this region, there exist a variety of backstreaming ion populations from the shock ramp that can generate ultra‐low frequency (ULF) waves through wave‐particle interactions. In this work, we use data from
Guan Le +11 more
wiley +1 more source