Polytropic index of central plasma sheet ions based on MHD Bernoulli integral

This paper uses the data of Cluster from 2001 to 2009 to study the polytropic processes of central plasma sheet (CPS) ions. We first adopt the approach of MHD Bernoulli integral (MBI) to identify homogeneous streamflow tubes (quasi‐invariant MBI regions) and then calculate the polytropic index of io...

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Bibliographic Details
Published in:Journal of geophysical research. Space physics 2015-06, Vol.120 (6), p.4736-4747
Main Authors: Pang, Xuexia, Cao, Jinbin, Liu, Wenlong, Ma, Yuduan, Lu, Haoyu, Yang, Junying, Li, Liuyuan, Liu, Xu, Wang, Jing, Wang, Tieyan, Yu, Jiang
Format: Article
Language:English
Subjects:
central plasma sheet
Cooling
Cooling effects
Emissions
Integrals
Ions
Magnetohydrodynamics
MHD
MHD Bernoulli integral
Normal distribution
Plasma
Plasma (physics)
polytropic index
Polytropic processes
Statistical analysis
Stream discharge
Stream flow
Thickening
Transition layers
Tubes
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Summary:This paper uses the data of Cluster from 2001 to 2009 to study the polytropic processes of central plasma sheet (CPS) ions. We first adopt the approach of MHD Bernoulli integral (MBI) to identify homogeneous streamflow tubes (quasi‐invariant MBI regions) and then calculate the polytropic index of ions for those streamflow tubes whose outward electromagnetic energy ratios δ  
ISSN:2169-9380
2169-9402
DOI:10.1002/2014JA020855