Results 11 to 20 of about 17,759 (228)

Upstream Transients at Planetary Bow Shocks

open access: green, 2009
Kinetic processes occurring upstream of planetary bow shocks can greatly perturb the magnetosphere-striking solar wind. Collisionless shocks are highly non-linear systems with complicated feedback mechanisms. Transient events form part of the growing evidence that shocks are highly variable and far more complex than a large-scale quasi-static picture ...
L. Billingham
core   +5 more sources

The location of planetary bow shocks: A critical overview of theory and observations

open access: hybridAdvances in Space Research, 1995
A bow shock (BS has been observed in the collisionless solar wind upstream of every planet except Pluto, which has yet to be visited by a spacecraft. They are all of similar character, but their size relative to the planet varies widely, e.g., the planeto-centric distance to the BS nose ranges from about 1.4 R(sub V) for Venus to 88 R(sub J) or more ...
J. R. Spreiter, S. S. Stahara
semanticscholar   +3 more sources

Impact of solar-wind turbulence on a planetary bow shock [PDF]

open access: diamondAstronomy & Astrophysics
Over the past decades, near-Earth spacecraft observations have provided insights into the physics of the bow shock, suggesting that solar wind intrinsic turbulence influences the bow shock dynamics. On the other hand, theoretical studies, based on global numerical simulations, have not yet investigated the global 3D interaction between a turbulent ...
E. Behar   +6 more
  +7 more sources

Planetary Bow Shocks [PDF]

open access: green, 2008
review paper on current state of knowledge about planetary bow shocks, 32 pp, 19 ...
R. A. Treumann, C. H. Jaroschek
openalex   +3 more sources

ANALYTICAL MODEL OF THE PLANETARY BOW SHOCK FOR VARIOUS MAGNETIC FIELD DIRECTIONS BASED ON MHD CALCULATIONS

open access: diamondSolar-Terrestrial Physics, 2020
Study of physical processes in plasma near planets often requires knowledge of the position and shape of the planetary bow shock. Empirical models are usually used since theoretical MHD and kinetic models consume too much computer time and cannot be used to track fast processes. M.I.
Г. А. Котова   +3 more
  +7 more sources

Mach Number Scaling of Foreshock Magnetic Fluctuations at Quasi-parallel Bow Shocks and Their Role in Magnetospheric Driving Throughout the Solar System

open access: yesThe Astrophysical Journal
Upstream of quasi-parallel bow shocks, reflected ions generate ion–ion instabilities. The resulting magnetic fluctuations can advect through the shock and interact with planetary magnetospheres.
Brandon L. Burkholder   +10 more
doaj   +2 more sources

HIGH-TEMPERATURE PROCESSING OF SOLIDS THROUGH SOLAR NEBULAR BOW SHOCKS: 3D RADIATION HYDRODYNAMICS SIMULATIONS WITH PARTICLES [PDF]

open access: yes, 2013
A fundamental, unsolved problem in solar system formation is explaining the melting and crystallization of chondrules found in chondritic meteorites. Theoretical models of chondrule melting in nebular shocks have been shown to be consistent with many ...
A. Boley, Melissa A. Morris, S. Desch
semanticscholar   +4 more sources

Magnetohydrodynamic Shocks Revisited: Magnetically Constraining the Upstream Solar Wind Condition

open access: yesThe Astrophysical Journal, 2023
Magnetohydrodynamic (MHD) shocks are commonly found in various space and astrophysical systems. One often encounters the problem that only the magnetic field data are available when studying interplanetary shocks and planetary bow shocks in the solar ...
Daniel Schmid, Yasuhito Narita
doaj   +2 more sources

The bow-shock and high-speed jet in the faint, 40 arcmin diameter, outer halo of the evolved Helix planetary nebula (NGC 7293) [PDF]

open access: bronzeMonthly Notices of the Royal Astronomical Society, 2013
7 pages, 6 figures, accepted for publication in ...
J. Meaburn, P. Boumis, S. Akras
openalex   +3 more sources

Subcritcal dispersive shock waves upstream of planetary bow shocks and at comet Giacobini‐Zinner

open access: yesGeophysical Research Letters, 1988
Electromagnetic simulations are used to investigate the nonlinear evolution of ULF (magnetosonic) waves. These waves have been observed upstream of planetary bow shocks and at Comet Giacobini‐Zinner. The simulations show that these waves steepen to form subcritical dispersive shock waves.
N. Omidi, D. Winske
openaire   +2 more sources

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