STATISTICAL STUDY OF RECONNECTION EXHAUSTS IN THE SOLAR WIND
Magnetic reconnection is a fundamental process that changes magnetic field configuration and converts a magnetic energy to flow energy and plasma heating. This paper presents a survey of the plasma and magnetic field parameters inside 418 reconnection exhausts identified in the WIND data from 1995-2...
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| Veröffentlicht in: | The Astrophysical journal 2014-11, Vol.796 (1), p.1-7 |
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| creator | Enzl, J Prech, L Safrankova, J Nemecek, Z |
| description | Magnetic reconnection is a fundamental process that changes magnetic field configuration and converts a magnetic energy to flow energy and plasma heating. This paper presents a survey of the plasma and magnetic field parameters inside 418 reconnection exhausts identified in the WIND data from 1995-2012. The statistical analysis is oriented on the re-distribution of the magnetic energy released due to reconnection between a plasma acceleration and its heating. The results show that both the portion of the energy deposited into heat as well as the energy spent on the acceleration of the exhaust plasma rise with the magnetic shear angle in accord with the increase of the magnetic flux available for reconnection. The decrease of the normalized exhaust speed with the increasing magnetic shear suggests a decreasing efficiency of the acceleration and/or the increasing efficiency of heating in high-shear events. However, we have found that the already suggested relation between the exhaust speed and temperature enhancement would be rather considered as an upper limit of the plasma heating during reconnection regardless of the shear angle. |
| doi_str_mv | 10.1088/0004-637X/796/1/21 |
| format | Article |
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This paper presents a survey of the plasma and magnetic field parameters inside 418 reconnection exhausts identified in the WIND data from 1995-2012. The statistical analysis is oriented on the re-distribution of the magnetic energy released due to reconnection between a plasma acceleration and its heating. The results show that both the portion of the energy deposited into heat as well as the energy spent on the acceleration of the exhaust plasma rise with the magnetic shear angle in accord with the increase of the magnetic flux available for reconnection. The decrease of the normalized exhaust speed with the increasing magnetic shear suggests a decreasing efficiency of the acceleration and/or the increasing efficiency of heating in high-shear events. However, we have found that the already suggested relation between the exhaust speed and temperature enhancement would be rather considered as an upper limit of the plasma heating during reconnection regardless of the shear angle.</description><subject>Acceleration</subject><subject>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</subject><subject>Deposition</subject><subject>DISTRIBUTION</subject><subject>EFFICIENCY</subject><subject>Heating</subject><subject>MAGNETIC FIELD CONFIGURATIONS</subject><subject>MAGNETIC FIELDS</subject><subject>MAGNETIC FLUX</subject><subject>MAGNETIC RECONNECTION</subject><subject>PLASMA</subject><subject>PLASMA ACCELERATION</subject><subject>PLASMA HEATING</subject><subject>Shear</subject><subject>SOLAR WIND</subject><subject>VELOCITY</subject><issn>1538-4357</issn><issn>0004-637X</issn><issn>1538-4357</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqNkE1Lw0AURQdRsFb_gKsBN25i5nsm4CakqQ2UBJop1tUQpxOMtE3NpAv_vQl14dLVe4tzL9wDwD1GTxgpFSKEWCCo3IQyEiEOCb4AE8ypChjl8vLPfw1uvP8ceRJFE_Bc6lhnpc6SeAlLvZ69wWIOV2lS5Hma6KzIYbpZxOtSlzDLoV6ksCyW8Qq-ZvnsFlzV1c67u987Bet5qpNFsCxexsLAUob7AGOyxY5wJFVdMcR5JQTlrrKKCVRbzKiqFVc1JYpYFzmpKCNb5lQtVYTeBZ2Ch3Nv6_vGeNv0zn7Y9nBwtjeEUDnMUQP1eKaOXft1cr43-8Zbt9tVB9eevMFSCSzYsPsfKFeUc0TwgJIzarvW-87V5tg1-6r7NhiZ0b0ZXZrRvRncG2yG0A9vqm5y</recordid><startdate>20141120</startdate><enddate>20141120</enddate><creator>Enzl, J</creator><creator>Prech, L</creator><creator>Safrankova, J</creator><creator>Nemecek, Z</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>KL.</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0003-4178-5206</orcidid><orcidid>https://orcid.org/0000-0002-8160-3051</orcidid></search><sort><creationdate>20141120</creationdate><title>STATISTICAL STUDY OF RECONNECTION EXHAUSTS IN THE SOLAR WIND</title><author>Enzl, J ; Prech, L ; Safrankova, J ; Nemecek, Z</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c341t-112d1e25078fa4055a6635eac8460fc1438f858f3282ce9e78342d4e8f7890b63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Acceleration</topic><topic>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</topic><topic>Deposition</topic><topic>DISTRIBUTION</topic><topic>EFFICIENCY</topic><topic>Heating</topic><topic>MAGNETIC FIELD CONFIGURATIONS</topic><topic>MAGNETIC FIELDS</topic><topic>MAGNETIC FLUX</topic><topic>MAGNETIC RECONNECTION</topic><topic>PLASMA</topic><topic>PLASMA ACCELERATION</topic><topic>PLASMA HEATING</topic><topic>Shear</topic><topic>SOLAR WIND</topic><topic>VELOCITY</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Enzl, J</creatorcontrib><creatorcontrib>Prech, L</creatorcontrib><creatorcontrib>Safrankova, J</creatorcontrib><creatorcontrib>Nemecek, Z</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>The Astrophysical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Enzl, J</au><au>Prech, L</au><au>Safrankova, J</au><au>Nemecek, Z</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>STATISTICAL STUDY OF RECONNECTION EXHAUSTS IN THE SOLAR WIND</atitle><jtitle>The Astrophysical journal</jtitle><date>2014-11-20</date><risdate>2014</risdate><volume>796</volume><issue>1</issue><spage>1</spage><epage>7</epage><pages>1-7</pages><issn>1538-4357</issn><issn>0004-637X</issn><eissn>1538-4357</eissn><abstract>Magnetic reconnection is a fundamental process that changes magnetic field configuration and converts a magnetic energy to flow energy and plasma heating. This paper presents a survey of the plasma and magnetic field parameters inside 418 reconnection exhausts identified in the WIND data from 1995-2012. The statistical analysis is oriented on the re-distribution of the magnetic energy released due to reconnection between a plasma acceleration and its heating. The results show that both the portion of the energy deposited into heat as well as the energy spent on the acceleration of the exhaust plasma rise with the magnetic shear angle in accord with the increase of the magnetic flux available for reconnection. The decrease of the normalized exhaust speed with the increasing magnetic shear suggests a decreasing efficiency of the acceleration and/or the increasing efficiency of heating in high-shear events. 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| subjects | Acceleration ASTROPHYSICS, COSMOLOGY AND ASTRONOMY Deposition DISTRIBUTION EFFICIENCY Heating MAGNETIC FIELD CONFIGURATIONS MAGNETIC FIELDS MAGNETIC FLUX MAGNETIC RECONNECTION PLASMA PLASMA ACCELERATION PLASMA HEATING Shear SOLAR WIND VELOCITY |
| title | STATISTICAL STUDY OF RECONNECTION EXHAUSTS IN THE SOLAR WIND |
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