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While pressure balance can predict how far the magnetopause will move in response to an upstream pressure change, it cannot determine how fast the transient reponse will be. Using Time History of Events and Macroscale Interactions during…

空间物理 · 物理学 2014-11-19 M. O. Archer , D. L. Turner , J. P. Eastwood , T. S. Horbury , S. J. Schwartz

The magnetopause marks the outer edge of the Earth's magnetosphere and a distinct boundary between solar wind and magnetospheric plasma populations. In this letter, we use global magnetohydrodynamic simulations to examine the response of…

Based on global hybrid simulation results, we predict that foreshock turbulence can reach the magnetopause and lead to reconnection as well as Earth-sized indents. Both the interplanetary magnetic field (IMF) and solar wind are constant in…

空间物理 · 物理学 2021-07-07 Li-Jen Chen , Jonathan Ng , Yuri Omelchenko , Shan Wang

A density structure within the magnetic cloud of an interplanetary coronal mass ejection impacted Earth and caused significant perturbations in plasma boundaries. We describe the effects of this structure on the magnetosheath plasma…

空间物理 · 物理学 2025-05-23 H. Madanian , Y. Pfau-Kempf , R. Rice , T. Liu , T. Karlsson , S. Raptis , D. Turner , J. Beedle

The impact of high-speed jets -- dynamic pressure enhancements in the magnetosheath -- on the Earth's magnetopause has been observed to trigger local magnetic reconnection. We perform a three-dimensional hybrid simulation to study the…

空间物理 · 物理学 2024-06-19 J. Ng , L. -J. Chen , Y. Omelchenko

We carry out two-dimensional global particle-in-cell simulations of the interaction between the solar wind and a dipole field to study the formation of the bow shock and magnetosphere. A self-reforming bow shock ahead of a dipole field is…

地球与行星天体物理 · 物理学 2016-07-27 Zhongwei Yang , Can Huang , Ying D. Liu , George K. Parks , Rui Wang , Quanming Lu , Huidong Hu

Past kinetic simulations and spacecraft observations have shown that traveling foreshocks (TFs) are bounded by either foreshock compressional boundaries (FCBs) or foreshock bubbles (FBs). Here we present four TFs with a different kind of…

太阳与恒星天体物理 · 物理学 2026-01-27 Primoz Kajdic , Xóchitl Blanco-Cano , Diana Rojas-Castllo , Nojan Omidi

Under quasi-radial interplanetary magnetic fields (IMF), foreshock turbulence can have an impact on the magnetosheath and cusps depending on the location of the quasi-parallel shock. We perform three-dimensional simulations of Earth's…

空间物理 · 物理学 2022-12-07 J. Ng , L. J. Chen , Y. Omelchenko , Y. Zhou , B. Lavraud

We characterize the nature of magnetic structures in the foreshock region of Mars associated with discontinuities in the solar wind. The structures form at the upstream edge of moving foreshocks caused by slow rotations in the…

Foreshock transients are ion kinetic structures in the ion foreshock. Due to their dynamic pressure perturbations, they can disturb the bow shock and magnetosphere-ionosphere system. They can also accelerate particles contributing to shock…

空间物理 · 物理学 2020-10-14 Terry Z. Liu , Xin An , Hui Zhang , Drew Turner

The pressure balance at the magnetopause is formed by magnetic field and plasma in the magnetosheath, on one side, and inside the magnetosphere, on the other side. In the approach of dipole earth's magnetic field configuration and…

地球与行星天体物理 · 物理学 2011-10-25 A. V. Suvorova , A. V. Dmitriev

Composed of shocked solar wind, the Earth's magnetosheath serves as a natural laboratory to study the transition of turbulence from low Alfv{\'e}n Mach number, $M_\mathrm{A}$, to high $M_\mathrm{A}$. The simultaneous observations of…

空间物理 · 物理学 2020-08-05 Hui Li , Wence Jiang , Chi Wang , Daniel Verscharen , Chen Zeng , C. T. Russell , B. Giles , J. L. Burch

Fast reverse shocks (FRSs) cause the magnetosphere to expand, by contrast to the well-known compressions caused by the impact of fast forward shocks (FFS). Usually, FFSs are more geoeffective than FRSs, and consequently, the inner…

Despite heat flux's role in regulating energy conversion in collisionless plasmas, its properties and evolution in the magnetosheath downstream of the Earth's bow shock are scarcely explored. We use MMS in situ measurements to quantify and…

The field of fast radio bursts (FRBs) has entered the age of fine characterization as observational results from different radio telescopes become more and more abundant. The large FRB sample is suitable for a statistical study. There is an…

高能天体物理现象 · 物理学 2023-12-25 Di Xiao , Zi-Gao Dai , Xue-Feng Wu

This paper analyzes the consequences of electric current generation at the front of the Bow Shock (BS) and the dependence of the direction of this current on the IMF. The conditions of this current closure through the body of the…

地球物理 · 物理学 2007-05-23 E. A. Ponomarev , P. A. Sedykh , O. V. Mager , V. D. Urbanovich

System-scale magnetohydrodynamic (MHD) waves within Earth's magnetosphere are often understood theoretically using box models. While these have been highly instructive in understanding many fundamental features of the various wave modes…

空间物理 · 物理学 2022-02-01 M. O. Archer , D. J. Southwood , M. D. Hartinger , L. Rastaetter , A. N. Wright

Surface waves process the turbulent disturbances which drive dynamics in many space, astrophysical and laboratory plasma systems, with the outer boundary of Earth's magnetosphere, the magnetopause, providing an accessible environment to…

空间物理 · 物理学 2021-10-07 M. O. Archer , M. D. Hartinger , F. Plaschke , D. J. Southwood , L. Rastaetter

The ion foreshock is highly dynamic, disturbing the bow shock and the magnetosphere-ionosphere system. To forecast foreshock-driven space weather effects, it is necessary to model foreshock ions as a function of upstream shock parameters.…

空间物理 · 物理学 2024-02-06 Terry Zixu Liu , Vassilis Angelopoulos , Hui Zhang , Andrew Vu , Joachim Raeder

Identifying blast-wave shocks, which can arise during CME formation, is a much more complex problem. The difference from piston shocks is that a blast-wave shock originates from the explosions that frequently accompany CME formation, and…

空间物理 · 物理学 2017-12-27 P. A. Sedykh
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