The response of plasma parameters and energy transport in the plasma sheet to interplanetary magnetic field Bz

2021 ◽  
Author(s):  
GanMing Ren ◽  
JinBin Cao ◽  
Jian Yang ◽  
Malcolm Wray Dunlop
Keyword(s):  
Magnetic Field ◽  
Interplanetary Magnetic Field ◽  
Plasma Sheet ◽  
Energy Transport ◽  
Plasma Parameters

scholarly journals Evolution of plasma sheet particle content under different interplanetary magnetic field conditions

2010 ◽  
Vol 115 (A6) ◽  
pp. n/a-n/a ◽  
Author(s):  
Chih-Ping Wang ◽  
Larry R. Lyons ◽  
Tsugunobu Nagai ◽  
James M. Weygand ◽  
A. T. Y. Lui
Keyword(s):  
Magnetic Field ◽  
Interplanetary Magnetic Field ◽  
Plasma Sheet ◽  
Field Conditions ◽  
Particle Content

Response of the plasma sheet at ∼18REto sudden southward turnings of the interplanetary magnetic field

1975 ◽  
Vol 80 (7) ◽  
pp. 929-935 ◽  
Author(s):  
A. T. Y. Lui ◽  
E. W. Hones ◽  
D. Venkatesan ◽  
S. -I. Akasofu ◽  
S. J. Bame
Keyword(s):  
Magnetic Field ◽  
Interplanetary Magnetic Field ◽  
Plasma Sheet

scholarly journals Solar Cycle Variation of Cosmic ray Intensity along with Interplanetary and Solar Wind Plasma Parameters

2008 ◽  
Vol 45 (3) ◽  
pp. 63-68 ◽  
Author(s):  
Rajesh Mishra ◽  
Rekha Agarwal ◽  
Sharad Tiwari
Keyword(s):  
Magnetic Field ◽  
Solar Wind ◽  
Solar Cycle ◽  
Interplanetary Magnetic Field ◽  
Cosmic Ray ◽  
Solar Wind Plasma ◽  
Solar Cycles ◽  
Plasma Parameters ◽  
Solar Cycle Variation ◽  
Cosmic Ray Intensity

Solar Cycle Variation of Cosmic ray Intensity along with Interplanetary and Solar Wind Plasma ParametersGalactic cosmic rays are modulated at their propagation in the heliosphere by the effect of the large-scale structure of the interplanetary medium. A comparison of the variations in the cosmic ray intensity data obtained by neutron monitoring stations with those in geomagnetic disturbance, solar wind velocity (V), interplanetary magnetic field (B), and their product (V' B) near the Earth for the period 1964-2004 has been presented so as to establish a possible correlation between them. We used the hourly averaged cosmic ray counts observed with the neutron monitor in Moscow. It is noteworthy that a significant negative correlation has been observed between the interplanetary magnetic field, product (V' B) and cosmic ray intensity during the solar cycles 21 and 22. The solar wind velocity has a good positive correlation with cosmic ray intensity during solar cycle 21, whereas it shows a weak correlation during cycles 20, 22 and 23. The interplanetary magnetic field shows a weak negative correlation with cosmic rays for solar cycle 20, and a good anti-correlation for solar cycles 21-23 with the cosmic ray intensity, which, in turn, shows a good positive correlation with disturbance time index (Dst) during solar cycles 21 and 22, and a weak correlation for cycles 20 and 23.

scholarly journals Sources, transport, and distributions of plasma sheet ions and electrons and dependences on interplanetary parameters under northward interplanetary magnetic field

2007 ◽  
Vol 112 (A10) ◽  
pp. n/a-n/a ◽  
Author(s):  
Chih-Ping Wang ◽  
Larry R. Lyons ◽  
Tsugunobu Nagai ◽  
James M. Weygand ◽  
Richard W. McEntire
Keyword(s):  
Magnetic Field ◽  
Interplanetary Magnetic Field ◽  
Plasma Sheet

scholarly journals On the problem of Plasma Sheet Boundary Layer identification from plasma moments in Earth's magnetotail

2012 ◽  
Vol 30 (9) ◽  
pp. 1331-1343 ◽  
Author(s):  
E. E. Grigorenko ◽  
R. Koleva ◽  
J.-A. Sauvaud
Keyword(s):  
Magnetic Field ◽  
Boundary Layer ◽  
Velocity Distribution ◽  
Plasma Sheet ◽  
Dynamic Pressure ◽  
Distribution Functions ◽  
Bulk Velocity ◽  
Plasma Sheet Boundary Layer ◽  
Plasma Parameters ◽  
Ion Velocity

Abstract. The problem of identification of the interface region between the lobe and the Plasma Sheet (PS) – the Plasma Sheet Boundary Layer (PSBL) – using ion moments and magnetic field data often arises in works devoted to statistical studies of various PSBL phenomena. Our experience in the identification of this region based on the analysis of ion velocity distribution functions demonstrated that plasma parameters, such as the ion density and bulk velocity, the plasma beta or the dynamic pressure vary widely depending on the state of magnetotail activity. For example, while field-aligned beams of accelerated ions are often observed propagating along the lobeward edge of the PSBL there are times when no signatures of these beams could be observed. In the last case, a spacecraft moving from the lobe region to the PS registers almost isotropic PS-like ion velocity distribution. Such events may be classified as observations of the outer PS region. In this paper, we attempt to identify ion parameter ranges or their combinations that result in a clear distinction between the lobe, the PSBL and the adjacent PS or the outer PS regions. For this we used 100 crossings of the lobe-PSBL-PS regions by Cluster spacecraft (s/c) made in different periods of magnetotail activity. By eye inspection of the ion distribution functions we first identify and separate the lobe, the PSBL and the adjacent PS or outer PS regions and then perform a statistical study of plasma and magnetic field parameters in these regions. We found that the best results in the identification of the lobe-PSBL boundary are reached when one uses plasma moments, namely the ion bulk velocity and density calculated not for the entire energy range, but for the energies higher than 2 keV. In addition, we demonstrate that in many cases the plasma beta fails to correctly identify and separate the PSBL and the adjacent PS or the outer PS regions.

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