Full-Sun observations for identifying the source of the slow solar wind
Fast (>700 km s −1 ) and slow (~400 km s −1 ) winds stream from the Sun, permeate the heliosphere and influence the near-Earth environment. While the fast wind is known to emanate primarily from polar coronal holes, the source of the slow wind remains unknown. Here we identify possible sites of o...
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| Veröffentlicht in: | Nature communications 2015-01, Vol.6 (1), p.5947-5947, Article 5947 |
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| creator | Brooks, David H. Ugarte-Urra, Ignacio Warren, Harry P. |
| description | Fast (>700 km s
−1
) and slow (~400 km s
−1
) winds stream from the Sun, permeate the heliosphere and influence the near-Earth environment. While the fast wind is known to emanate primarily from polar coronal holes, the source of the slow wind remains unknown. Here we identify possible sites of origin using a slow solar wind source map of the entire Sun, which we construct from specially designed, full-disk observations from the Hinode satellite, and a magnetic field model. Our map provides a full-Sun observation that combines three key ingredients for identifying the sources: velocity, plasma composition and magnetic topology and shows them as solar wind composition plasma outflowing on open magnetic field lines. The area coverage of the identified sources is large enough that the sum of their mass contributions can explain a significant fraction of the mass loss rate of the solar wind.
Both fast and slow solar winds emanate from our Sun, although the source of the slow component remains elusive. Towards identifying this, Brooks
et al
. present full-Sun spectral images from Hinode, combined with magnetic modelling, to produce a solar wind source map. |
| doi_str_mv | 10.1038/ncomms6947 |
| format | Article |
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et al
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−1
) and slow (~400 km s
−1
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et al
. present full-Sun spectral images from Hinode, combined with magnetic modelling, to produce a solar wind source map.</description><subject>639/33/525/870</subject><subject>Humanities and Social Sciences</subject><subject>multidisciplinary</subject><subject>Plasma</subject><subject>Science</subject><subject>Science (multidisciplinary)</subject><subject>Solar physics</subject><subject>Sun</subject><subject>Velocity</subject><subject>Wind</subject><issn>2041-1723</issn><issn>2041-1723</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>BENPR</sourceid><recordid>eNplkUtLAzEUhYMottRu_AEy4EaU0TznsRGk2CoILtR1yGQybcpMUpOZlv57U1pr1WyS3Ptxcm4OAOcI3iJIsjsjbdP4JKfpEehjSFGMUkyOD849MPR-DsMiOcooPQU9zFiCU8j6YDLu6jp-60xkC6_cUrTaGh9V1kW6VKbV1VqbadTOVORt56SKbLW91XYVSrVw0Uqb8gycVKL2arjbB-Bj_Pg-eopfXifPo4eXWDKYtTEuCMQU44QyUqqSCZbKJIepxKlCqKCUVbkUWVYoVMgkowUiqCxzylJCVVbmZADut7qLrmhUKYNFJ2q-cLoRbs2t0Px3x-gZn9olp4RRBJMgcLUTcPazU77ljfZS1bUwynaeo4QSChkjG_TyDzoPX2DCeBsKE5ZShgJ1vaWks947Ve3NIMg3EfGfiAJ8cWh_j34HEoCbLeBDy0yVO3jzv9wX9Y-buQ</recordid><startdate>20150106</startdate><enddate>20150106</enddate><creator>Brooks, David H.</creator><creator>Ugarte-Urra, Ignacio</creator><creator>Warren, Harry P.</creator><general>Nature Publishing Group UK</general><general>Nature Publishing Group</general><general>Nature Pub. 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−1
) and slow (~400 km s
−1
) winds stream from the Sun, permeate the heliosphere and influence the near-Earth environment. While the fast wind is known to emanate primarily from polar coronal holes, the source of the slow wind remains unknown. Here we identify possible sites of origin using a slow solar wind source map of the entire Sun, which we construct from specially designed, full-disk observations from the Hinode satellite, and a magnetic field model. Our map provides a full-Sun observation that combines three key ingredients for identifying the sources: velocity, plasma composition and magnetic topology and shows them as solar wind composition plasma outflowing on open magnetic field lines. The area coverage of the identified sources is large enough that the sum of their mass contributions can explain a significant fraction of the mass loss rate of the solar wind.
Both fast and slow solar winds emanate from our Sun, although the source of the slow component remains elusive. Towards identifying this, Brooks
et al
. present full-Sun spectral images from Hinode, combined with magnetic modelling, to produce a solar wind source map.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>25562705</pmid><doi>10.1038/ncomms6947</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| source | DOAJ Directory of Open Access Journals; Nature Journals Online; EZB-FREE-00999 freely available EZB journals; PubMed Central; Alma/SFX Local Collection; Springer Nature OA Free Journals |
| subjects | 639/33/525/870 Humanities and Social Sciences multidisciplinary Plasma Science Science (multidisciplinary) Solar physics Sun Velocity Wind |
| title | Full-Sun observations for identifying the source of the slow solar wind |
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