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dc.date.accessioned2018-02-18T10:51:15Z
dc.date.available2018-02-18T10:51:15Z
dc.date.created2017-03-02T22:01:22Z
dc.date.issued2017
dc.identifier.citationRutten, Robert Rouppe, Van Der Voort Luc . Solar Hα features with hot onsets: II. A contrail fibril. Astronomy and Astrophysics. 2017, 597
dc.identifier.urihttp://hdl.handle.net/10852/60233
dc.description.abstractThe solar chromosphere observed in Hα consists mostly of narrow fibrils. The longest typically originate in network or plage and arch far over adjacent internetwork. We use data from multiple telescopes to analyze one well-observed example in a quiet area. It resulted from the earlier passage of an accelerating disturbance in which the gas was heated to high temperature as in the spicule-II phenomenon. After this passage a dark Hα fibril appeared as a contrail. We use Saha-Boltzmann extinction estimation to gauge the onset and subsequent visibilities in various diagnostics and conclude that such Hα fibrils can indeed be contrail phenomena, not indicative of the thermodynamic and magnetic environment when they are observed but of more dynamic happenings before. They do not connect across internetwork cells but represent launch tracks of heating events and chart magnetic field during launch, not at present. © ESO, 2017en_US
dc.languageEN
dc.language.isoenen_US
dc.publisherEDP Sciences
dc.titleSolar Hα features with hot onsets: II. A contrail fibrilen_US
dc.typeJournal articleen_US
dc.creator.authorRutten, Robert
dc.creator.authorRouppe, Van Der Voort Luc
cristin.unitcode185,15,3,0
cristin.unitnameInstitutt for teoretisk astrofysikk
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2
dc.identifier.cristin1455481
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomy and Astrophysics&rft.volume=597&rft.spage=&rft.date=2017
dc.identifier.jtitleAstronomy and Astrophysics
dc.identifier.volume597
dc.identifier.pagecount10
dc.identifier.doihttp://dx.doi.org/10.1051/0004-6361/201527560
dc.identifier.urnURN:NBN:no-62905
dc.type.documentTidsskriftartikkelen_US
dc.type.peerreviewedPeer reviewed
dc.source.issn0004-6361
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/60233/2/aa27560-15.pdf
dc.type.versionPublishedVersion
cristin.articleidA138
dc.relation.projectNFR/222687
dc.relation.projectNFR/230938
dc.relation.projectNFR/250810


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