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Correlation of Alfvén Mach number with field aligned current, polar cap potential and dawn dusk electric field during Quiet and extreme solar wind conditions

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Title Correlation of Alfvén Mach number with field aligned current, polar cap potential and dawn dusk electric field during Quiet and extreme solar wind conditions
 
Creator Adhikari, Binod
Pandit, Drabindra
Baruwal, Prashrit
Thapa, Opendra
Adhikari, Niraj
Kaphle, Bidur
Bhattarai, Pratik
Chapagain, Narayan P.
Adhikari, Sarala
 
Subject Geomagnetic conditions
Field aligned currents
Polar cap potential
Dawn dusk electric field
Alfven Mach number
 
Description 128-138
This paper has been performed to study the Alfvenic Mach number (M­A) in relation to Field Aligned Currents (FACs), Polar Cap Potential (PCV), Dawn Dusk Electric Field (Ey) during different geomagnetic conditions. The relations of M­A with FACs, PCV and interplanetary electric field (IEF)-EY not solely dependent on any solar wind parameter but also associate with prior, main, and post conditions of geomagnetic storms. This study has shown that Prior to the arrival of interplanetary shock (IS),  and  show good relationship with FAC, PCV, EFY, and solar wind parameters, as the space weather seems unperturbed. The positive correlations among the various parameters have obtained due to the merging of two different interplanetary coronal mass ejections (ICMEs) driven solar storms and consequential intense southward interplanetary magnetic field. The negative relationships among the selected parameters may have been due to the slow recovery of the IMF-Bz component. This study indicate that the preceding solar winds could be associatedon the variance of M­A of a geomagnetic event, in turn might have its effects on FACs, PCV, Ey and in other solar wind parameters.
 
Date 2021-06-07T09:52:31Z
2021-06-07T09:52:31Z
2020-09
 
Type Article
 
Identifier 0975-105X (Online); 0367-8393 (Print)
http://nopr.niscair.res.in/handle/123456789/57444
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJRSP Vol.49(3) [September 2020]