Macroscopic quasi‐linear theory of electromagnetic electron cyclotron instability associated with core and halo solar wind electrons

Spacecraft observations made near 1 AU show that both core and halo solar wind electrons exhibit temperature anisotropies that appear to be regulated by marginal electromagnetic electron cyclotron instability condition. In the literature, the threshold conditions of this instability, operative for T...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of geophysical research. Space physics 2016-10, Vol.121 (10), p.9356-9368
Hauptverfasser: Sarfraz, M., Saeed, Sundas, Yoon, P. H., Abbas, G., Shah, H. A.
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 9368
container_issue 10
container_start_page 9356
container_title Journal of geophysical research. Space physics
container_volume 121
creator Sarfraz, M.
Saeed, Sundas
Yoon, P. H.
Abbas, G.
Shah, H. A.
description Spacecraft observations made near 1 AU show that both core and halo solar wind electrons exhibit temperature anisotropies that appear to be regulated by marginal electromagnetic electron cyclotron instability condition. In the literature, the threshold conditions of this instability, operative for T⊥>T∥, have been expressed as an inverse correlation between the temperature anisotropy, T⊥/T∥, and parallel beta, β∥, but such a relation was deduced on the basis of linear stability analysis combined with empirical fitting. The present paper, on the other hand, employs macroscopic quasi‐linear analysis for core‐halo two‐component model of the solar wind electrons, in order to follow the self‐consistent time history of the core and halo temperature development as well as the dynamics of magnetic field perturbation wave energy. In the present analysis, the inverse correlation for core and halo temperature anisotropy and parallel beta naturally emerges from the solutions of self‐consistent theory. The present findings indicate that the macroscopic quasi‐linear method may be useful for modeling the dynamics of solar wind electrons. Key Points EMEC instability is studied with quasi‐linear theory for the first time Core and halo electrons mutually interact during instability progression Macroscopic quasi‐linear theory is a useful tool for studying solar wind electrons
doi_str_mv 10.1002/2016JA022854
format Article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1864577586</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1902536858</sourcerecordid><originalsourceid>FETCH-LOGICAL-c4396-3c606695f3bfd8d02fb5f40bfc03e4b69a6c3c38e673d5377ba97633da5e39833</originalsourceid><addsrcrecordid>eNqN0U9LHDEYBvBBFCrWWz9AoJceuvZN3sm_4yJ1VSwF0fOQyWTcSHayJrMsc-upZz-jn8TYVSg9SHPJ-4YfD4Snqj5ROKEA7BsDKi7nwJji9V51yKjQM10D23-bUcGH6jjneyhHlSfKD6vfP4xNMdu49pY8bEz2T78egx-cSWRcupgmEnvigrNjiitzN7ixwNd9IHayIf6Z_JBH0_rgx4mYnKP1ZnQd2fpxSWxMjpihI0sTIskxlPCtL_tbTv5YHfQmZHf8eh9Vt2ffb07PZ1c_Fxen86uZrVGLGVoBQmjeY9t3qgPWt7yvoe0toKtboY2waFE5IbHjKGVrtBSIneEOtUI8qr7sctcpPmxcHpuVz9aFYAYXN7mhStRcSq7Ef1AOUgHoutDP_9D7uElD-UhDNTCOQnH1rlI1ByqVhKK-7tRLLTm5vlknvzJpaig0L0U3fxddOO741gc3vWuby8X1nCMwgc8IDKsi</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1845017870</pqid></control><display><type>article</type><title>Macroscopic quasi‐linear theory of electromagnetic electron cyclotron instability associated with core and halo solar wind electrons</title><source>Wiley Free Content</source><source>Wiley Online Library All Journals</source><creator>Sarfraz, M. ; Saeed, Sundas ; Yoon, P. H. ; Abbas, G. ; Shah, H. A.</creator><creatorcontrib>Sarfraz, M. ; Saeed, Sundas ; Yoon, P. H. ; Abbas, G. ; Shah, H. A.</creatorcontrib><description>Spacecraft observations made near 1 AU show that both core and halo solar wind electrons exhibit temperature anisotropies that appear to be regulated by marginal electromagnetic electron cyclotron instability condition. In the literature, the threshold conditions of this instability, operative for T⊥&gt;T∥, have been expressed as an inverse correlation between the temperature anisotropy, T⊥/T∥, and parallel beta, β∥, but such a relation was deduced on the basis of linear stability analysis combined with empirical fitting. The present paper, on the other hand, employs macroscopic quasi‐linear analysis for core‐halo two‐component model of the solar wind electrons, in order to follow the self‐consistent time history of the core and halo temperature development as well as the dynamics of magnetic field perturbation wave energy. In the present analysis, the inverse correlation for core and halo temperature anisotropy and parallel beta naturally emerges from the solutions of self‐consistent theory. The present findings indicate that the macroscopic quasi‐linear method may be useful for modeling the dynamics of solar wind electrons. Key Points EMEC instability is studied with quasi‐linear theory for the first time Core and halo electrons mutually interact during instability progression Macroscopic quasi‐linear theory is a useful tool for studying solar wind electrons</description><identifier>ISSN: 2169-9380</identifier><identifier>EISSN: 2169-9402</identifier><identifier>DOI: 10.1002/2016JA022854</identifier><language>eng</language><publisher>Washington: Blackwell Publishing Ltd</publisher><subject>Anisotropy ; anisotropy beta ; Correlation analysis ; Cyclotrons ; Dynamic stability ; Dynamics ; Electrons ; EM electron cyclotron ; Empirical analysis ; Halos ; Instability ; Linear analysis ; Magnetic fields ; Perturbation methods ; quasi‐linear relaxation ; Solar physics ; Solar wind ; Solar wind electrons ; Spacecraft ; Spacecraft stability ; Stability ; Stability analysis ; Wave energy ; Wave power</subject><ispartof>Journal of geophysical research. Space physics, 2016-10, Vol.121 (10), p.9356-9368</ispartof><rights>2016. American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4396-3c606695f3bfd8d02fb5f40bfc03e4b69a6c3c38e673d5377ba97633da5e39833</citedby><cites>FETCH-LOGICAL-c4396-3c606695f3bfd8d02fb5f40bfc03e4b69a6c3c38e673d5377ba97633da5e39833</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2F2016JA022854$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2F2016JA022854$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1416,1432,27923,27924,45573,45574,46408,46832</link.rule.ids></links><search><creatorcontrib>Sarfraz, M.</creatorcontrib><creatorcontrib>Saeed, Sundas</creatorcontrib><creatorcontrib>Yoon, P. H.</creatorcontrib><creatorcontrib>Abbas, G.</creatorcontrib><creatorcontrib>Shah, H. A.</creatorcontrib><title>Macroscopic quasi‐linear theory of electromagnetic electron cyclotron instability associated with core and halo solar wind electrons</title><title>Journal of geophysical research. Space physics</title><description>Spacecraft observations made near 1 AU show that both core and halo solar wind electrons exhibit temperature anisotropies that appear to be regulated by marginal electromagnetic electron cyclotron instability condition. In the literature, the threshold conditions of this instability, operative for T⊥&gt;T∥, have been expressed as an inverse correlation between the temperature anisotropy, T⊥/T∥, and parallel beta, β∥, but such a relation was deduced on the basis of linear stability analysis combined with empirical fitting. The present paper, on the other hand, employs macroscopic quasi‐linear analysis for core‐halo two‐component model of the solar wind electrons, in order to follow the self‐consistent time history of the core and halo temperature development as well as the dynamics of magnetic field perturbation wave energy. In the present analysis, the inverse correlation for core and halo temperature anisotropy and parallel beta naturally emerges from the solutions of self‐consistent theory. The present findings indicate that the macroscopic quasi‐linear method may be useful for modeling the dynamics of solar wind electrons. Key Points EMEC instability is studied with quasi‐linear theory for the first time Core and halo electrons mutually interact during instability progression Macroscopic quasi‐linear theory is a useful tool for studying solar wind electrons</description><subject>Anisotropy</subject><subject>anisotropy beta</subject><subject>Correlation analysis</subject><subject>Cyclotrons</subject><subject>Dynamic stability</subject><subject>Dynamics</subject><subject>Electrons</subject><subject>EM electron cyclotron</subject><subject>Empirical analysis</subject><subject>Halos</subject><subject>Instability</subject><subject>Linear analysis</subject><subject>Magnetic fields</subject><subject>Perturbation methods</subject><subject>quasi‐linear relaxation</subject><subject>Solar physics</subject><subject>Solar wind</subject><subject>Solar wind electrons</subject><subject>Spacecraft</subject><subject>Spacecraft stability</subject><subject>Stability</subject><subject>Stability analysis</subject><subject>Wave energy</subject><subject>Wave power</subject><issn>2169-9380</issn><issn>2169-9402</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqN0U9LHDEYBvBBFCrWWz9AoJceuvZN3sm_4yJ1VSwF0fOQyWTcSHayJrMsc-upZz-jn8TYVSg9SHPJ-4YfD4Snqj5ROKEA7BsDKi7nwJji9V51yKjQM10D23-bUcGH6jjneyhHlSfKD6vfP4xNMdu49pY8bEz2T78egx-cSWRcupgmEnvigrNjiitzN7ixwNd9IHayIf6Z_JBH0_rgx4mYnKP1ZnQd2fpxSWxMjpihI0sTIskxlPCtL_tbTv5YHfQmZHf8eh9Vt2ffb07PZ1c_Fxen86uZrVGLGVoBQmjeY9t3qgPWt7yvoe0toKtboY2waFE5IbHjKGVrtBSIneEOtUI8qr7sctcpPmxcHpuVz9aFYAYXN7mhStRcSq7Ef1AOUgHoutDP_9D7uElD-UhDNTCOQnH1rlI1ByqVhKK-7tRLLTm5vlknvzJpaig0L0U3fxddOO741gc3vWuby8X1nCMwgc8IDKsi</recordid><startdate>201610</startdate><enddate>201610</enddate><creator>Sarfraz, M.</creator><creator>Saeed, Sundas</creator><creator>Yoon, P. H.</creator><creator>Abbas, G.</creator><creator>Shah, H. A.</creator><general>Blackwell Publishing Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>8FD</scope><scope>H8D</scope><scope>KL.</scope><scope>L7M</scope></search><sort><creationdate>201610</creationdate><title>Macroscopic quasi‐linear theory of electromagnetic electron cyclotron instability associated with core and halo solar wind electrons</title><author>Sarfraz, M. ; Saeed, Sundas ; Yoon, P. H. ; Abbas, G. ; Shah, H. A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4396-3c606695f3bfd8d02fb5f40bfc03e4b69a6c3c38e673d5377ba97633da5e39833</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Anisotropy</topic><topic>anisotropy beta</topic><topic>Correlation analysis</topic><topic>Cyclotrons</topic><topic>Dynamic stability</topic><topic>Dynamics</topic><topic>Electrons</topic><topic>EM electron cyclotron</topic><topic>Empirical analysis</topic><topic>Halos</topic><topic>Instability</topic><topic>Linear analysis</topic><topic>Magnetic fields</topic><topic>Perturbation methods</topic><topic>quasi‐linear relaxation</topic><topic>Solar physics</topic><topic>Solar wind</topic><topic>Solar wind electrons</topic><topic>Spacecraft</topic><topic>Spacecraft stability</topic><topic>Stability</topic><topic>Stability analysis</topic><topic>Wave energy</topic><topic>Wave power</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sarfraz, M.</creatorcontrib><creatorcontrib>Saeed, Sundas</creatorcontrib><creatorcontrib>Yoon, P. H.</creatorcontrib><creatorcontrib>Abbas, G.</creatorcontrib><creatorcontrib>Shah, H. A.</creatorcontrib><collection>CrossRef</collection><collection>Meteorological &amp; Geoastrophysical Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Meteorological &amp; Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of geophysical research. Space physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sarfraz, M.</au><au>Saeed, Sundas</au><au>Yoon, P. H.</au><au>Abbas, G.</au><au>Shah, H. A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Macroscopic quasi‐linear theory of electromagnetic electron cyclotron instability associated with core and halo solar wind electrons</atitle><jtitle>Journal of geophysical research. Space physics</jtitle><date>2016-10</date><risdate>2016</risdate><volume>121</volume><issue>10</issue><spage>9356</spage><epage>9368</epage><pages>9356-9368</pages><issn>2169-9380</issn><eissn>2169-9402</eissn><abstract>Spacecraft observations made near 1 AU show that both core and halo solar wind electrons exhibit temperature anisotropies that appear to be regulated by marginal electromagnetic electron cyclotron instability condition. In the literature, the threshold conditions of this instability, operative for T⊥&gt;T∥, have been expressed as an inverse correlation between the temperature anisotropy, T⊥/T∥, and parallel beta, β∥, but such a relation was deduced on the basis of linear stability analysis combined with empirical fitting. The present paper, on the other hand, employs macroscopic quasi‐linear analysis for core‐halo two‐component model of the solar wind electrons, in order to follow the self‐consistent time history of the core and halo temperature development as well as the dynamics of magnetic field perturbation wave energy. In the present analysis, the inverse correlation for core and halo temperature anisotropy and parallel beta naturally emerges from the solutions of self‐consistent theory. The present findings indicate that the macroscopic quasi‐linear method may be useful for modeling the dynamics of solar wind electrons. Key Points EMEC instability is studied with quasi‐linear theory for the first time Core and halo electrons mutually interact during instability progression Macroscopic quasi‐linear theory is a useful tool for studying solar wind electrons</abstract><cop>Washington</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1002/2016JA022854</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 2169-9380
ispartof Journal of geophysical research. Space physics, 2016-10, Vol.121 (10), p.9356-9368
issn 2169-9380
2169-9402
language eng
recordid cdi_proquest_miscellaneous_1864577586
source Wiley Free Content; Wiley Online Library All Journals
subjects Anisotropy
anisotropy beta
Correlation analysis
Cyclotrons
Dynamic stability
Dynamics
Electrons
EM electron cyclotron
Empirical analysis
Halos
Instability
Linear analysis
Magnetic fields
Perturbation methods
quasi‐linear relaxation
Solar physics
Solar wind
Solar wind electrons
Spacecraft
Spacecraft stability
Stability
Stability analysis
Wave energy
Wave power
title Macroscopic quasi‐linear theory of electromagnetic electron cyclotron instability associated with core and halo solar wind electrons
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-11T22%3A42%3A01IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Macroscopic%20quasi%E2%80%90linear%20theory%20of%20electromagnetic%20electron%20cyclotron%20instability%20associated%20with%20core%20and%20halo%20solar%20wind%20electrons&rft.jtitle=Journal%20of%20geophysical%20research.%20Space%20physics&rft.au=Sarfraz,%20M.&rft.date=2016-10&rft.volume=121&rft.issue=10&rft.spage=9356&rft.epage=9368&rft.pages=9356-9368&rft.issn=2169-9380&rft.eissn=2169-9402&rft_id=info:doi/10.1002/2016JA022854&rft_dat=%3Cproquest_cross%3E1902536858%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1845017870&rft_id=info:pmid/&rfr_iscdi=true