Clarification on Polarity of Bipolar Electric Field Solitary Structures in Space Plasmas with Satellite Observation

	Clarification on Polarity of Bipolar Electric Field Solitary Structures in Space Plasmas with Satellite Observation
	Qureshi, M. N. S.; Shi Jian-Kui; Torkar, Klaus; Liu Zhen-Xing
刊名	CHINESE PHYSICS LETTERS
	2011
卷号	28 期号:2 页码:25204
ISSN号	0256-307X
通讯作者	Qureshi, MNS (reprint author), Govt Coll Univ, Dept Phys, Lahore 54000, Pakistan.
中文摘要	The bipolar electric field solitary (EFS) structures observed frequently in space plasmas by satellites have two different polarities, first positive electric field peak then negative (i.e., positive/negative) and first negative then positive peak (i.e., negative/positive). We provide the physical explanation on the polarity of observed bipolar EFS structures with an electrostatic ion fluid model. The results show that if initial electric field E-0 > 0, the polarity of the bipolar EFS structure will be positive/negative; and if E-0 < 0, the polarity of the bipolar EFS structure will be negative/positive. However, for a fixed polarity of the EFS, either positive/negative or negative/positive, if the satellite is located at the positive side of the EFS, the observed polarity should be positive/negative, if the satellite is located at the negative side of the EFS, the observed polarity should be negative/positive. Therefore, we provide a method to clarify the natural polarity of the EFS with observed polarity by satellites. Our results are significant to understand the physical process in space plasma with the satellite observation.
英文摘要	The bipolar electric field solitary (EFS) structures observed frequently in space plasmas by satellites have two different polarities, first positive electric field peak then negative (i.e., positive/negative) and first negative then positive peak (i.e., negative/positive). We provide the physical explanation on the polarity of observed bipolar EFS structures with an electrostatic ion fluid model. The results show that if initial electric field E-0 > 0, the polarity of the bipolar EFS structure will be positive/negative; and if E-0 < 0, the polarity of the bipolar EFS structure will be negative/positive. However, for a fixed polarity of the EFS, either positive/negative or negative/positive, if the satellite is located at the positive side of the EFS, the observed polarity should be positive/negative, if the satellite is located at the negative side of the EFS, the observed polarity should be negative/positive. Therefore, we provide a method to clarify the natural polarity of the EFS with observed polarity by satellites. Our results are significant to understand the physical process in space plasma with the satellite observation.
学科主题	空间物理
收录类别	SCI
资助信息	National Natural Science Foundation of China [40874084, 41074114, 40921063]; Chinese Academy of Sciences [KJCX2-YW-T13-3]; Specialized Research Fund for State Key Laboratories
语种	英语
公开日期	2014-12-15
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/3187]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Qureshi, M. N. S.,Shi Jian-Kui,Torkar, Klaus,et al. Clarification on Polarity of Bipolar Electric Field Solitary Structures in Space Plasmas with Satellite Observation[J]. CHINESE PHYSICS LETTERS,2011,28(2):25204.
APA	Qureshi, M. N. S.,Shi Jian-Kui,Torkar, Klaus,&Liu Zhen-Xing.(2011).Clarification on Polarity of Bipolar Electric Field Solitary Structures in Space Plasmas with Satellite Observation.CHINESE PHYSICS LETTERS,28(2),25204.
MLA	Qureshi, M. N. S.,et al."Clarification on Polarity of Bipolar Electric Field Solitary Structures in Space Plasmas with Satellite Observation".CHINESE PHYSICS LETTERS 28.2(2011):25204.