Results 191 to 200 of about 18,820 (223)

Ionospheric Response to the Interplanetary Shock

AIP Conference Proceedings, 2008
The Cluster spacecraft and ground-based Digisonde network observed on November 7, 2004 a strong interplanetary shock interaction with Earth's magnetosphere which initiated a strong magnetic storm with Dst = −373 nT. When the interplanetary shock encountered the Earth system, the Cluster fleet was traveling in the inner magnetosphere region (L shell = 4.
Q.-G. Zong, B. W. Reinisch, P. Song, I. Galkin, X. J. Liu, Paul Song, John Foster, Michael Mendillo, Dieter Bilitza   +8 more
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Unusual wave activity near interplanetary shocks

AIP Conference Proceedings, 1996
It has been reported that quasi-parallel (Q(sub parallel)) shocks are generally characterized by hours of upstream ion-acoustic-like wave activity and that quasi-perpendicular (Q(sub perpendicular)) shocks show only minimal upstream wave activity. However, we report Ulysses observations of several exceptions to these trends.
G. Thejappa, R. J. MacDowall, R. G. Stone   +2 more
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Slow shocks in the interplanetary medium

Journal of Geophysical Research, 1977
The production of MHD shock ensembles in the solar wind will, in general, result in slow forward and reverse shocks in addition to fast forward and reverse shocks and a contact discontinuity. As opposed to fast shocks, which last for an extended period of time, slow shocks disappear in two stages.
Philip Rosenau, S. T. Suess
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Bow shock and its interaction with interplanetary shocks

Radio Science, 1973
Harbingers 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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Energetic Protons Associated with Interplanetary Shocks

International Astronomical Union Colloquium, 1994
AbstractDuring the period March - May 1981, nine interplanetary shocks passing through the position of the Prognoz-8 s/c influenced the flux of energetic protons (Ep≥ 12 keV). The temporal profiles of two of them agree with the model of diffusional acceleration.
M. Slivka, K. Kudela, M. Borodkova, G. Zastenker   +3 more
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Modeling Particle Acceleration at Interplanetary Shocks

AIP Conference Proceedings, 2008
A brief review of particle acceleration at inner heliospheric interplanetary and coronal mass ejection (CME)‐driven shocks is presented. The discussion is presented in terms of a specific event that was modeled using the Particle Acceleration and Transport in the Heliosphere model (hereafter PATH) code.
G. P. Zank, Gang Li, O. Verkhoglyadova, Gang Li, Qiang Hu, Olga Verkhoglyadova, Gary P. Zank, R. P. Lin, J. Luhmann   +8 more
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Interplanetary shock waves and magnetospheric substorms

Planetary and Space Science, 1980
It is shown that substorm activity after a storm sudden commencement (SSC) depends on whether or not an interplanetary shock wave is accompanied by a large increase of the solar wind-magnetosphere energy coupling function. It has long been thought that substorm activity associated with an SSC results from sudden conversion of magnetic energy stored in ...
S.-I. Akasofu, J.K. Chao
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Satellite observations of interplanetary shock waves

Journal of Geophysical Research, 1968
Interplanetary shock waves propagating through the solar wind have been observed with hemispherical plate electrostatic analyzers aboard the twin Vela 3 satellites. From the consideration of mass flux continuity, the shock velocities have been calculated; the shock velocities determined from the data in this manner are consistent with the observed ...
J. T. Gosling, J. R. Asbridge, S. J. Bame, A. J. Hundhausen, I. B. Strong   +4 more
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Longitudinal extents of coronal/interplanetary shocks

AIP Conference Proceedings, 1996
Whereas the majority of researchers accept the important role of shocks in accelerating particles at the Sun and in the heliosphere, there remain many details to be determined. In this paper the sizes of coronal shocks required by prompt solar particle events are compared with sizes of interplanetary shocks determined from in situ measurements ...
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Multi-Spacecraft Observations of Interplanetary Shocks

AIP Conference Proceedings, 2005
This paper presents the analysis of a number of interplanetary shocks observed by near‐Earth solar wind monitors. Single and four‐spacecraft shock normal determination methods are compared and it is demonstrated that the four‐spacecraft timing method is not generally more accurate than the single‐spacecraft Rankine‐Hugoniot fit.
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