Examination of Bow-Shock Formation in Supersonic Radiatively Cooled Plasma Flows

2011 ◽  
Vol 39 (11) ◽  
pp. 2422-2423 ◽  
Author(s):  
Jonathan L. Peebles ◽  
Simon C. Bott ◽  
Kanchana Gunasekera ◽  
Joohwan Kim ◽  
Leonard Harpster ◽  
...  
Author(s):  
S. C. Bott ◽  
K. Gunasekera ◽  
G. W. Collins ◽  
D. Mariscal ◽  
J. Kim ◽  
...  

2021 ◽  
Author(s):  
Savvas Raptis ◽  
Tomas Karlsson ◽  
Ferdinand Plaschke ◽  
Anita Kullen ◽  
Per-Arne Lindqvist

<p>Fast plasma flows (magnetosheath jets) are localized and transient dynamic pressure enhancements found downstream of the Earth’s bow shock, in the magnetosheath region. They can be attributed to density and/or density enhancements and they are an energetic manifestation of the solar wind-magnetosphere coupling. They have been associated to several phenomena such as magnetopause reconnection, direct magnetosphere plasma inflow and the energization of the outer radiation belt electrons.</p><p>In this work, we are investigating the properties of a dataset of 9196 jets found by Magnetospheric Multiscale (MMS) from 09/2015 to 09/2020. These jets are classified into different classes based on their associated bow shock configuration. From the full dataset, about 300 jets are distinguished by being in very close proximity to a bow shock transition.</p><p>This subset of jet is then carefully pre-processed and statistically analyzed, providing information regarding the likelihood of existent (bow shock ripples, SLAMS penetration) and newly proposed (magnetic reconnection, magnetic islands) generation mechanisms for these jets. The initial results of these events support the pre-existing generation mechanism while giving indications to other possible effects that may take place.</p>


2012 ◽  
Vol 108 (6) ◽  
Author(s):  
Y. Saitou ◽  
Y. Nakamura ◽  
T. Kamimura ◽  
O. Ishihara

2020 ◽  
Author(s):  
Joseph Levesque ◽  
Carolyn Kuranz ◽  
Rachel Young ◽  
Andy Liao ◽  
Patrick Hartigan ◽  
...  

2022 ◽  
Vol 29 (1) ◽  
pp. 012106
Author(s):  
Joseph M. Levesque ◽  
Andy S. Liao ◽  
Patrick Hartigan ◽  
Rachel P. Young ◽  
Matthew Trantham ◽  
...  

2018 ◽  
Vol 36 (3) ◽  
pp. 695-703 ◽  
Author(s):  
Ferdinand Plaschke ◽  
Heli Hietala

Abstract. The magnetosheath is commonly permeated by localized high-speed jets downstream of the quasi-parallel bow shock. These jets are much faster than the ambient magnetosheath plasma, thus raising the question of how that latter plasma reacts to incoming jets. We have performed a statistical analysis based on 662 cases of one THEMIS spacecraft observing a jet and another (second) THEMIS spacecraft providing context observations of nearby plasma to uncover the flow patterns in and around jets. The following results are found: along the jet's path, slower plasma is accelerated and pushed aside ahead of the fastest core jet plasma. Behind the jet core, plasma flows into the path to fill the wake. This evasive plasma motion affects the ambient magnetosheath, close to the jet's path. Diverging and converging plasma flows ahead and behind the jet are complemented by plasma flows opposite to the jet's propagation direction, in the vicinity of the jet. This vortical plasma motion results in a deceleration of ambient plasma when a jet passes nearby. Keywords. Magnetospheric physics (magnetosheath; MHD waves and instabilities; solar wind–magnetosphere interactions)


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