Interaction of non-perpendicular/parallel solar wind shock waves with the earth's magnetosphere

Grib, S. A.

doi:10.1007/bf00225175

Cited by 27 publications

(32 citation statements)

References 5 publications

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“…The train of discontinuities suggested by Grib [1982] or Yan and Lee [1996] probably could not be observed because, as Samsonov et al [2006] noted, their velocities are very similar and thus they cannot be distinguished in experimental data.…”

Section: Resultsmentioning

confidence: 97%

“…[4] In their MHD estimations, Grib [1982] and Pushkar et al [1991] found that the interaction of the IP and bow shocks results in a train of different kinds of discontinuities and the number of these discontinuities changes with the distance from the Sun-Earth line (including a complete sequence of seven forward and reverse MHD discontinuities at the magnetospheric flanks). These conclusions were confirmed by the 1-D simulation studies of Yan and Lee [1996] that found five discontinuities and a modified bow shock along the Sun-Earth line.…”

Section: Introductionmentioning

confidence: 99%

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Modification of interplanetary shocks near the bow shock and through the magnetosheath

et al. 2007

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[1] Fast forward interplanetary (IP) shocks have been identified as a source of the largest geomagnetic disturbances. These shocks can evolve in the solar wind, and they are modified both by interaction with the bow shock and during their propagation through the magnetosheath. Our contribution continues the study of the evolution of IP shocks in the magnetosheath. We compare profiles of the magnetic field and plasma parameters observed in the magnetosheath with profiles of the same parameters predicted by an MHD magnetosheath numerical model. The IP shock transmission into and its propagation through the magnetosheath cause inward and then outward motions of the bow shock, and these motions result in an ''indentation'' of the bow shock surface. This indentation (trough) flows along the bow shock together with the IP shock. Furthermore, we found that the interaction of the IP shock with the bow shock results in two discontinuities. These effects are consistent with the simulations of the MHD magnetosheath model.

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Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Modification of interplanetary shocks near the bow shock and through the magnetosheath

et al. 2007

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“…By taking into account a magnetic field direction forming a 45 • angle with the solar wind velocity, Grib (1982) has found that the interaction of a fast IS with the bow shock results in a couple of forward waves (i.e., the transmitted fast IS and a slow expansion wave), a couple of reverse waves (i.e., the fast modified bow shock and a slow shock) and a contact discontinuity. The Grib (1982) theoretical findings have been confirmed by later MHD simulations both in one-dimensional (Yan and Lee, 1996) and in full three-dimensional case close to the Sun-Earth line .…”

Section: Introductionmentioning

confidence: 99%

Interplanetary shock transmitted into the Earth's magnetosheath: Cluster and Double Star observations

et al. 2010

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Abstract. On day 7 May 2005, the plasma instruments on board Double Star TC1 and Cluster SC3 spacecraft register inside the magnetosheath, at 19:15:12 and 19:16:20 UT, respectively, a strong pressure pulse due to the impact of an interplanetary shock wave (IS) on the terrestrial bow shock. The analysis of this event provides clear and quantitative evidences confirming and strengthening some results given by past simulations and observational studies. In fact, here we show that the transmitted shock is slowed down with respect to the incident IS (in the Earth's reference frame) and that, besides the transmitted shock, the IS -bow shock interaction generates a second discontinuity. Moreover, supported also by a special set three-dimensional magnetohydrodynamic simulation, we discuss, as further effects of the interaction of the IS with the magnetosphere, other two interesting aspects of the present event, that is: the TC1 double crossing of the bow shock (observed few minutes after the impact of the IS) and the presence, only in the SC3 data, of a third discontinuity produced inside the magnetosheath.

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“…Although MHD modeling achieved a particular success in description of the IP shock interaction with the bow shock (e.g., Zhuang et al, 1981;Grib, 1982;Yan and Lee, 1996;Samsonov et al, 2006), the models have two significant limitations: (1) their present codes can be applied only to the shocks perpendicular to the solar wind velocity and (2) they cannot account for foreshock effects.…”

Section: Introductionmentioning

confidence: 99%

Influence of the foreshock of the Earth’s bow shock on the interplanetary shock propagation during their mutual interaction

2009

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Interplanetary shocks have been recognized as a very efficient source of geomagnetic disturbances. We present a short study of the propagation of one interplanetary (IP) shock observed by five spacecraft located in the solar wind far upstream of the Earth's bow shock as well as in its close vicinity. The IP shock normal was highly inclined from the Sun-Earth line and thus the IP shock-bow shock interaction started at the flank. We have found a significant evolution of IP shock parameters during its motion along the bow shock. This modification is discussed and attributed to the presence of strong fluxes of energetic particles in the foreshock.

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Interaction of non-perpendicular/parallel solar wind shock waves with the earth's magnetosphere

Cited by 27 publications

References 5 publications

Modification of interplanetary shocks near the bow shock and through the magnetosheath

Modification of interplanetary shocks near the bow shock and through the magnetosheath

Interplanetary shock transmitted into the Earth's magnetosheath: Cluster and Double Star observations

Influence of the foreshock of the Earth’s bow shock on the interplanetary shock propagation during their mutual interaction

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