CLASP Constraints on the Magnetization and Geometrical Complexity of the Chromosphere-Corona Transition Region
dc.date.accessioned | 2019-04-17T09:29:55Z | |
dc.date.available | 2019-04-17T09:29:55Z | |
dc.date.created | 2019-02-08T10:55:22Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Trujillo Bueno, Javier Stepan, Jiri Belluzzi, Luca Asensio Ramos, Andrés Manso Sainz, Manso del Pino Alemán, T. Casini, Roberto Ishikawa, Ryohko Kano, Ryouhei Winebarger, Amy R. Auchère, Frédéric Narukage, Noriyuki Kobayashi, Ken Bando, Takamasa Katsukawa, Yukio Kubo, Masahito Ishikawa, Shin'nosuke Giono, Gabriel Hara, Hirohisa Suematsu, Yoshinori Shimizu, Toshifumi Sakao, Taro Tsuneta, Saku Ichimoto, Kiyoshi Cirtain, Jonathan W. Champey, Patrick R. De Pontieu, Bart Walter Carlsson, Mats . CLASP Constraints on the Magnetization and Geometrical Complexity of the Chromosphere-Corona Transition Region. Astrophysical Journal Letters. 2018, 866:L15 | |
dc.identifier.uri | http://hdl.handle.net/10852/67706 | |
dc.description.abstract | The Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP) is a suborbital rocket experiment that on 2015 September 3 measured the linear polarization produced by scattering processes in the hydrogen Lyα line of the solar disk radiation. The line-center photons of this spectral line radiation mostly stem from the chromosphere-corona transition region (TR). These unprecedented spectropolarimetric observations revealed an interesting surprise, namely that there is practically no center-to-limb variation (CLV) in the Q/I line-center signals. Using an analytical model, we first show that the geometric complexity of the corrugated surface that delineates the TR has a crucial impact on the CLV of the Q/I and U/I line-center signals. Second, we introduce a statistical description of the solar atmosphere based on a 3D model derived from a state-of-the-art radiation magnetohydrodynamic simulation. Each realization of the statistical ensemble is a 3D model characterized by a given degree of magnetization and corrugation of the TR, and for each such realization we solve the full 3D radiative transfer problem taking into account the impact of the CLASP instrument degradation on the calculated polarization signals. Finally, we apply the statistical inference method presented in a previous paper to show that the TR of the 3D model that produces the best agreement with the CLASP observations has a relatively weak magnetic field and a relatively high degree of corrugation. We emphasize that a suitable way to validate or refute numerical models of the upper solar chromosphere is by confronting calculations and observations of the scattering polarization in ultraviolet lines sensitive to the Hanle effect. | en_US |
dc.language | EN | |
dc.publisher | Institute of Physics Publishing Ltd. | |
dc.title | CLASP Constraints on the Magnetization and Geometrical Complexity of the Chromosphere-Corona Transition Region | en_US |
dc.type | Journal article | en_US |
dc.creator.author | Trujillo Bueno, Javier | |
dc.creator.author | Stepan, Jiri | |
dc.creator.author | Belluzzi, Luca | |
dc.creator.author | Asensio Ramos, Andrés | |
dc.creator.author | Manso Sainz, Manso | |
dc.creator.author | del Pino Alemán, T. | |
dc.creator.author | Casini, Roberto | |
dc.creator.author | Ishikawa, Ryohko | |
dc.creator.author | Kano, Ryouhei | |
dc.creator.author | Winebarger, Amy R. | |
dc.creator.author | Auchère, Frédéric | |
dc.creator.author | Narukage, Noriyuki | |
dc.creator.author | Kobayashi, Ken | |
dc.creator.author | Bando, Takamasa | |
dc.creator.author | Katsukawa, Yukio | |
dc.creator.author | Kubo, Masahito | |
dc.creator.author | Ishikawa, Shin'nosuke | |
dc.creator.author | Giono, Gabriel | |
dc.creator.author | Hara, Hirohisa | |
dc.creator.author | Suematsu, Yoshinori | |
dc.creator.author | Shimizu, Toshifumi | |
dc.creator.author | Sakao, Taro | |
dc.creator.author | Tsuneta, Saku | |
dc.creator.author | Ichimoto, Kiyoshi | |
dc.creator.author | Cirtain, Jonathan W. | |
dc.creator.author | Champey, Patrick R. | |
dc.creator.author | De Pontieu, Bart Walter | |
dc.creator.author | Carlsson, Mats | |
cristin.unitcode | 185,15,3,40 | |
cristin.unitname | Rosseland senter for solfysikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |
dc.identifier.cristin | 1674804 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astrophysical Journal Letters&rft.volume=866:L15&rft.spage=&rft.date=2018 | |
dc.identifier.jtitle | Astrophysical Journal Letters | |
dc.identifier.volume | 866:L15 | |
dc.identifier.pagecount | 7 | |
dc.identifier.doi | http://dx.doi.org/10.3847/2041-8213/aae25a | |
dc.identifier.urn | URN:NBN:no-70893 | |
dc.type.document | Tidsskriftartikkel | en_US |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 2041-8205 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/67706/1/Trujillo_Bueno_2018_ApJL_866_L15.pdf | |
dc.type.version | PublishedVersion | |
cristin.articleid | L15 | |
dc.relation.project | NFR/262622 |
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