scholarly journals Kinetic ballooning/interchange instability in a bent plasma sheet

2012 ◽  
Vol 117 (A6) ◽  
pp. n/a-n/a ◽  
Author(s):  
E. V. Panov ◽  
R. Nakamura ◽  
W. Baumjohann ◽  
M. G. Kubyshkina ◽  
A. V. Artemyev ◽  
...  
Keyword(s):  
Plasma Sheet ◽  
Interchange Instability

Interplay of bubble injections in the plasma sheet dynamics as inferred from RCM-I simulations

2020 ◽  
Author(s):  
Sina Sadeghzadeh ◽  
Jian Yang
Keyword(s):  
Plasma Sheet ◽  
High Speed ◽  
Space Environment ◽  
Inner Magnetosphere ◽  
Near Earth Space ◽  
Hot Plasma ◽  
Plasma Distribution ◽  
Rice Convection Model ◽  
Convection Model ◽  
Interchange Instability

<p><span>Understanding the transport of hot plasma from tail towards the inner magnetosphere is of great importance to improve our perception of the near-Earth space environment. In accordance with the recent observations, the contribution of bursty bulk flows (BBFs)/bubbles in the inner plasma sheet especially in the storm-time ring current formation is nonnegligible. These high-speed plasma flows with depleted flux tube/entropy are likely formed in the mid tail due to magnetic reconnection and injected earthward as a result of interchange instability. In this presentation, we investigate the interplay of these meso-scale structures on the average magnetic field and plasma distribution in various regions of the plasma sheet, using the Inertialized Rice Convection Model (RCM-I). We will discuss the comparison of our simulation results with the observational statistics and data-based empirical models.</span></p>

scholarly journals Ballooning‐Interchange Instability in the Near‐Earth Plasma Sheet and Auroral Beads: Global Magnetospheric Modeling at the Limit of the MHD Approximation

2020 ◽  
Vol 47 (14) ◽  
Author(s):  
K. A. Sorathia ◽  
V. G. Merkin ◽  
E. V. Panov ◽  
B. Zhang ◽  
J. G. Lyon ◽  
...  
Keyword(s):  
Plasma Sheet ◽  
Interchange Instability

A possible mechanism for <theta> aurora formation

1995 ◽  
Vol 13 (7) ◽  
pp. 698-703 ◽  
Author(s):  
B. V. Rezhenov ◽  
I. M. Vardavas
Keyword(s):  
Magnetic Field ◽  
Boundary Layer ◽  
Plasma Sheet ◽  
Energy Spectra ◽  
System Of Equations ◽  
The Sun ◽  
High Latitudes ◽  
Plasma Sheet Boundary Layer ◽  
Interchange Instability ◽  
Field Lines

Abstract. A mechanism for the formation of <theta> aurora connected with the development of an interchange instability on the plasma sheet boundary layer (PSBL) is suggested. The PSBL is assumed to be deep inside the region of closed magnetic field lines. A system of equations connecting currents in the ionosphere and magnetosphere is solved numerically. It is found, using realistic ionospheric and magnetospheric parameters, that in a period of 8–10 min a system of plasma bars directed to the Sun arises at high latitudes. The system of bars is about 1000 km in width and 3000 km in length and approximates the Θ aurora. The suggested mechanism allows an explanation of a number of Θ aurora features such as the appearance probability, electric field directions, energy spectra of precipitating particles, and its location.

scholarly journals Ballooning-interchange Instability at the Inner Edge of the Plasma Sheet as a Driver of Auroral Beads: High-resolution Global MHD Simulations

2020 ◽  
Author(s):  
Kareem Sorathia ◽  
Viacheslav Merkin ◽  
Aleksandr Ukhorskiy ◽  
Binzheng Zhang ◽  
John Lyon ◽  
...  
Keyword(s):  
High Resolution ◽  
Plasma Sheet ◽  
Mhd Simulations ◽  
Interchange Instability

Instability of the magnetosphere-ionosphere convection and formation of auroral arcs

1994 ◽  
Vol 12 (7) ◽  
pp. 636-641
Author(s):  
A. E. Kozlovsky ◽  
W. B. Lyatsky
Keyword(s):  
Steady State ◽  
Plasma Sheet ◽  
Electron Precipitation ◽  
Ionospheric Conductivity ◽  
Magnetospheric Convection ◽  
The Earth ◽  
Interchange Instability ◽  
Auroral Arcs

Abstract. In this paper we study an instability of the plasma moving towards the Earth near the inner plasma sheet boundary. We include both the interchange instability of the plasma sheet and the magnetosphere-ionosphere interaction instability caused by an effect of field-aligned currents (connected with electron precipitation) on ionospheric conductivity. The instability leads to the separation of steady-state magnetospheric convection into parallel layers. This instability may be responsible for the appearance of quiet auroral arcs inside region 2 of field-aligned currents flowing out of the ionosphere. This instability allows us to explain also the existence of crossing auroral arcs.

Access of plasma sheet ions to the inner magnetosphere

2001 ◽  
Author(s):  
Paul Rothwell ◽  
William Burke ◽  
Carl-Gunne Falthammar
Keyword(s):  
Plasma Sheet ◽  
Inner Magnetosphere
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