Results 1 to 10 of about 12,122 (180)

Relating the Solar Wind Turbulence Spectral Break at the Dissipation Range with an Upstream Spectral Bump at Planetary Bow Shocks [PDF]

The Astrophysical Journal, 2022
Abstract At scales much larger than the ion inertial scale and the gyroradius of thermal protons, the magnetohydrodynamic (MHD) theory is well equipped to describe the nature of solar wind turbulence. The turbulent spectrum itself is defined by a power law manifesting the energy cascading process.
Michael Terres, Gang Li
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Planetary Embryo Bow Shocks as a Mechanism for Chondrule Formation [PDF]

The Astrophysical Journal, 2016
ABSTRACT We use radiation hydrodynamics with direct particle integration to explore the feasibility of chondrule formation in planetary embryo bow shocks. The calculations presented here are used to explore the consequences of a Mars-size planetary embryo traveling on a moderately excited orbit through the dusty, early environment of the
Christopher R. Mann, Aaron C. Boley, M. A. Morris   +2 more
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Features of Foreshock Transients at Planetary Bow Shocks

Solar System Research, 2023
In front of the bow shock with a quasi-parallel configuration of the interplanetary magnetic field, there exists a region called a foreshock, in which many nonstationary processes take place, the largest of which are collectively named “foreshock transients.” The size of these formations can reach tens of Earth radii, which significantly influences the
С. Д. Шувалов
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Physics‐Based Analytical Model of the Planetary Bow Shock Position and Shape

Journal of Geophysical Research: Space Physics, 2021
AbstractIn studies of physical processes near planetary bow shocks, empirical models of the latter are usually used. While computational magneto‐hydrodynamics (MHD) or kinetic models of bow shocks are often more accurate, their computationally extensive nature limits their applicability to routine analysis of large volumes of data.
Г. А. Котова, М. И. Веригин, T. I. Gombosi, К. Кабин, J. A. Slavin, В. В. Безруких   +5 more
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Planetary bow shocks: Gasdynamic analytic approach [PDF]

Journal of Geophysical Research: Space Physics, 2003
A new analytical model of the bow shock surface is suggested for reasonably accurate and fast prediction of this boundary's position near obstacles of different shape. For axially symmetric obstacles the model was verified by comparison with experiments and results of gasdynamic code application for a wide range of upstream polytropic indexes, 1.15 <
М. И. Веригин, J. A. Slavin, Á. Szabó, T. I. Gombosi, Г. А. Котова, O. Plochova, K. Szegő, M. Tátrallyay, К. Кабин, F. V. Shugaev   +9 more
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Planetary bow shocks: Asymptotic MHD Mach cones [PDF]

Earth, Planets and Space, 2014
A direct approach for determining the asymptotic MHD Mach cone is formulated and solved. An implicit analytical solution enables the calculation of the asymptotic downstream slope of MHD Mach cones at any clock angle for arbitrary Ms, Ma, and ϑbv. The solution obtained includes all previously known symmetric cases.
М. И. Веригин, J. A. Slavin, Á. Szabó, Г. А. Котова, T. I. Gombosi   +4 more
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Plasma wave turbulence at planetary bow shocks [PDF]

Nature, 1981
Voyager 1 observations of plasma wave turbulence at Saturn's bow shock are discussed and compared with corresponding data from Jupiter, earth, and Venus. The results suggest that the plasma instabilities that develop at the lower Mach number bow shocks of the terrestrial planets differ from those found at the high Mach number bow shocks of the outer ...
F. L. Scarf, D. A. Gurnett, W. S. Kŭrth
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Planetary Evaporation and the Dynamics of Planet Wind/Stellar Wind Bow Shocks [PDF]

Proceedings of the International Astronomical Union, 2015
AbstractWe present initial results of a new campaign of simulations focusing on the interaction of planetary winds with stellar environments using Adaptive Mesh Refinement methods. We have confirmed the results of Stone & Proga (2009) that an azimuthal flow structure is created in the planetary wind due to day/night temperatures differences.
A. Frank, B. Lui, J. Carroll-Nellenback, A. C. Quillen, E. G. Blackman, J. Kasting, I. Dobbs-Dixon   +6 more
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CHONDRULE FORMATION IN BOW SHOCKS AROUND ECCENTRIC PLANETARY EMBRYOS [PDF]

The Astrophysical Journal, 2012
Accepted for publication in The Astrophysical ...
Melissa A. Morris, Aaron C. Boley, Steven J. Desch, Themis Athanassiadou   +3 more
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Morphological and kinematical analysis of the planetary nebula Hu 1-2 and its irradiated bow-shocks [PDF]

Proceedings of the International Astronomical Union, 2011
AbstractWe present narrow-band optical and near-IR images, and high-resolution long-slit spectra of the planetary nebula Hu 1-2 that allow us to make a detailed description of its unusual morphology and internal kinematics. The data also reveal that the ansae of Hu 1-2 probably represent bow-shocks associated to high velocity outflows that are ...
L. F. Miranda, M. W. Blanco, M. A. Guerrero, A. Riera   +3 more
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