Asymmetry of nonlinear interactions of solar MHD discontinuities with the bow shock

Grib, S. A.; Pushkar, E. A.

doi:10.1134/s0016793206040025

Cited by 13 publications

(15 citation statements)

References 12 publications

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“…The three discontinuities travel with similar speeds and can not be resolved in the 3-D simulations . However, another combination of discontinuities may appear for a slightly different upstream configuration (see results of Pushkar' et al, 1991;Grib and Pushkar, 2006). The contact discontinuity seems to exist in any combination, and it is generally surrounded by slow shocks and/or slow rarefaction waves.…”

Section: Numerical Simulationmentioning

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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Section: Numerical Simulationmentioning

confidence: 99%

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

et al. 2010

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“…Observations of such discontinuities were described by Šafránková et al [2007] and they, in accord with Samsonov et al [2006], classified them as a combination of a forward slow expansion wave, a contact discontinuity, and reverse slow shock generated by the IP shock–bow shock interaction. Theoretical investigations of the interaction of solar wind discontinuities with the curved bow shock by Grib and Pushkar [2006] have shown that the character of these follow‐up discontinuities would change as the IP shock proceeds along the bow shock. All resulting discontinuities propagate usually with similar speeds and they cannot be distinguished in experimental data.…”

Section: Magnetosheath Observationmentioning

confidence: 99%

Response of magnetospheric boundaries to the interplanetary shock: Themis contribution

Přech

Němeček

Šafránková

2008

Geophysical Research Letters

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[1] Several studies have been devoted to the interaction of interplanetary (IP) shocks with both characteristic Earth's magnetospheric boundaries: the bow shock and magnetopause. Non-stationarity of this interaction requires multi-spacecraft observations with good space and temporal coverage. We analyze a CIR generated IP shock with the normal highly inclined from the solar wind velocity. We use a large set of spacecraft orbiting in the solar wind (SOHO, Wind, ACE), near the bow shock (Cluster II) as well as in the magnetosheath (Themis A, B, C, D) and in the magnetosphere at the magnetopause vicinity (Themis E). We discuss the IP shock deformation, changes of its orientation and speed as well as the properties of a new discontinuity generated by the IP shock -bow shock interaction. Citation: Přech, L., Z. Němeček, and J. Š afránková (2008), Response of magnetospheric boundaries to the interplanetary shock: Themis contribution, Geophys. Res. Lett., 35, L17S02,

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“…Besides the work of Grib and Pushkar (2006), who investigated the problem of interaction of an inclined shock with the bow shock using a numerical solution of the Rankine-Hugoniot (R-H) equations. They considered a plane containing the solar wind velocity, interplanetary magnetic field, and the IS normal and obtained a variable set of MHD discontinuities downstream of the bow shock in dependence on position in this plane along the bow shock surface.…”

Section: Introductionmentioning

confidence: 99%

Propagation of inclined interplanetary shock through the magnetosheath

Samsonov

2011

Journal of Atmospheric and Solar-Terrestrial Physics

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Asymmetry of nonlinear interactions of solar MHD discontinuities with the bow shock

Cited by 13 publications

References 12 publications

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

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

Response of magnetospheric boundaries to the interplanetary shock: Themis contribution

Propagation of inclined interplanetary shock through the magnetosheath

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