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Propagation of Interplanetary Shocks Across the Bow Shock
AIP Conference Proceedings, 2010An important problem of the Space Weather Program is the interaction of interplanetary (IP) shocks with the Earth magnetosphere because their interaction often (but not always) leads to major geomagnetic storms. Since the huge interaction region can be covered by simultaneous spacecraft observations only sporadically, global MHD modeling can help in ...
Zdeněk Nem̌ecěk +9 more
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Decay of the cometary bow shock
Nature, 1985Cooling processes will weaken the bow shock that is expected to form when the solar wind plasma encounters a gassy comet. As the supersonic wind penetrates the comet's outer coma, accreting freshly ionized cometary atoms and molecules, it needs a shock to adjust to the inner subsonic conditions.
M. K. Wallis, M. Dryer
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Magnetohydrodynamic aspects of the Earth’s bow shock 1. Equilibrium bow shock position
Journal of Geophysical Research, 1974The fluid dynamic treatment of the magnetosphere-bow shock system provides a useful means to calculate the equilibrium standoff distance of the shock. From the simple gas dynamic model a specific heat ratio γ≈5/3 of the streaming plasma is found to be appropriate for average solar wind conditions.
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Overshoots in planetary bow shocks
Nature, 1982The parametric variation with solar wind conditions in the overshoot in magnetic field strength observed in planetary bow shocks and believed to be associated with the ion reflection process is examined based on both terrestrial and planetary bow shock data.
C. T. Russell +2 more
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On the structure of the turbulent bow shock
Journal of Geophysical Research, 1973A few short bow shock crossings have been studied (Days 44, 53, 255, and 48, 1969). The first three events are shown to be incomplete shock crossings; i.e., the satellite spent a few minutes each time within the shock layer. Large-amplitude waves are observed in |B| with frequency close to Ωi.
V. Formisano, P. C. Hedgecock
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Heliospheric shocks (excluding planetary bow shocks)
Reviews of Geophysics, 1987Even though it took place less than halfway through the last four year period, the AGU Chapman Conference in Napa Valley, California, during February, 1984, highlighted in many ways current U. S. contributions to the study of heliospheric shocks. Considerable recent progress in the theoretical understanding of these discontinuities has been summarized ...
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Bow shock and its interaction with interplanetary shocks
Radio Science, 1973Harbingers of significant magnetospheric motions consist of the interactions of interplanetary discontinuities with the standing bow shock. The most common discontinuity is the tangential discontinuity. Less frequent in occurrence, but of major significance to subsequent magnetospheric dynamics, is the flare‐generated interplanetary shock wave and its ...
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Statistics of bow shock nonuniformity
Journal of Geophysical Research, 1973The statistical occurrence of pulsation or oblique structure about the earth's generally nonuniform bow shock is estimated at selected points by combining a three-dimensional distribution of interplanetary field directions obtained for a six-day solar wind sector with an index of local pulsation geometry. The result, obtained with a pulsation index of
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Reviews of Geophysics, 1995
Between the world of living organisms and inanimate objects exists a zone inhabited by animate, but nonliving, physical entities. These fascinating, and often nonlinear systems exhibit characteristics which in many ways mimic that of simple biological organisms.
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Between the world of living organisms and inanimate objects exists a zone inhabited by animate, but nonliving, physical entities. These fascinating, and often nonlinear systems exhibit characteristics which in many ways mimic that of simple biological organisms.
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Asymmetric reconnection at the bow shock
2020<p>Can reconnection be triggered as a directional discontinuity (DD) crosses the bow shock? Here we present some unique observations of asymmetric reconnection at a quasi-perpendicular bow shock as an interplanetary DD is crossing it simultaneously with the Magnetospheric Multiscale (MMS) mission.
Herbert Gunell +6 more
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