Probing Upflowing Regions in the Quiet Sun and Coronal Holes
This Open Access article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the C...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/264205 |
| Acceso en línea: | http://hdl.handle.net/10261/264205 |
| Access Level: | acceso abierto |
| Palabra clave: | Corona, structures Coronal holes Jets |
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Probing Upflowing Regions in the Quiet Sun and Coronal Holes |
| title |
Probing Upflowing Regions in the Quiet Sun and Coronal Holes |
| spellingShingle |
Probing Upflowing Regions in the Quiet Sun and Coronal Holes Schwanitz, Conrad Corona, structures Coronal holes Jets |
| title_short |
Probing Upflowing Regions in the Quiet Sun and Coronal Holes |
| title_full |
Probing Upflowing Regions in the Quiet Sun and Coronal Holes |
| title_fullStr |
Probing Upflowing Regions in the Quiet Sun and Coronal Holes |
| title_full_unstemmed |
Probing Upflowing Regions in the Quiet Sun and Coronal Holes |
| title_sort |
Probing Upflowing Regions in the Quiet Sun and Coronal Holes |
| dc.creator.none.fl_str_mv |
Schwanitz, Conrad Harra, Louise Raouafi, Nour E. Sterling, Alphonse C. Moreno Vacas, Alejandro Toro, José Carlos del Orozco Suárez, David Hara, Hirohisa |
| author |
Schwanitz, Conrad |
| author_facet |
Schwanitz, Conrad Harra, Louise Raouafi, Nour E. Sterling, Alphonse C. Moreno Vacas, Alejandro Toro, José Carlos del Orozco Suárez, David Hara, Hirohisa |
| author_role |
author |
| author2 |
Harra, Louise Raouafi, Nour E. Sterling, Alphonse C. Moreno Vacas, Alejandro Toro, José Carlos del Orozco Suárez, David Hara, Hirohisa |
| author2_role |
author author author author author author author |
| dc.contributor.none.fl_str_mv |
Federal Institute of Technology Zurich European Commission Ministerio de Economía y Competitividad (España) Ministerio de Ciencia e Innovación (España) Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
Corona, structures Coronal holes Jets |
| topic |
Corona, structures Coronal holes Jets |
| description |
This Open Access article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. |
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2021 |
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2021 2022 2022 |
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Inglés |
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Springer Nature |
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Springer Nature |
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Probing Upflowing Regions in the Quiet Sun and Coronal HolesSchwanitz, ConradHarra, LouiseRaouafi, Nour E.Sterling, Alphonse C.Moreno Vacas, AlejandroToro, José Carlos delOrozco Suárez, DavidHara, HirohisaCorona, structuresCoronal holesJetsThis Open Access article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.Recent observations from Parker Solar Probe have revealed that the solar wind has a highly variable structure. How this complex behaviour is formed in the solar corona is not yet known, since it requires omnipresent fluctuations, which constantly emit material to feed the wind. In this article we analyse 14 upflow regions in the solar corona to find potential sources for plasma flow. The upflow regions are derived from spectroscopic data from the EUV Imaging Spectrometer (EIS) on board Hinode determining their Doppler velocity and defining regions which have blueshifts stronger than −6kms−1. To identify the sources of these blueshift data from the Atmospheric Imaging Assembly (AIA) and the Helioseismic and Magnetic Imager (HMI), on board the Solar Dynamics Observatory (SDO), and the X-ray Telescope (XRT), on board Hinode, are used. The analysis reveals that only 5 out of 14 upflows are associated with frequent transients, like obvious jets or bright points. In contrast to that, seven events are associated with small-scale features, which show a large variety of dynamics. Some resemble small bright points, while others show an eruptive nature, all of which are faint and only live for a few minutes; we cannot rule out that several of these sources may be fainter and, hence, less obvious jets. Since the complex structure of the solar wind is known, this suggests that new sources have to be considered or better methods used to analyse the known sources. This work shows that small and frequent features, which were previously neglected, can cause strong upflows in the solar corona. These results emphasise the importance of the first observations from the Extreme-Ultraviolet Imager (EUI) on board Solar Orbiter, which revealed complex small-scale coronal structures. © 2021, The Author(s).Hinode is a Japanese mission developed and launched by ISAS/JAXA, collaborating with NAOJ as a domestic partner, NASA and STFC (UK) as international partners. Scientific operation of the Hinode mission is conducted by the Hinode science team organized at ISAS/JAXA. This team mainly consists of scientists from institutes in the partner countries. Support for the post-launch operation is provided by JAXA and NAOJ (Japan), STFC (U.K.), NASA (U.S.A.), ESA, and NSC (Norway). SDO data and images are courtesy of NASA/SDO and the AIA science team. C.S. is grateful to SNSF for funding through project 200021_188390. A.C.S. was supported through grants from NASA’s Heliophysics Division, and through the NASA/MSFC Hinode Project. The work of Spanish co-authors has been supported by the Spanish Ministry for Science, Technology and Innovation through project RTI2018-096886-B-C51, and by “Centro de Excelencia Severo Ochoa” Program under grant SEV-2017-0709. D.O.S. also acknowledges financial support through the Ramón y Cajal fellowship. Open access funding provided by Swiss Federal Institute of Technology Zurich.Peer reviewedSpringer NatureFederal Institute of Technology ZurichEuropean CommissionMinisterio de Economía y Competitividad (España)Ministerio de Ciencia e Innovación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202220222021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/264205reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MICINN//SEV-2017-0709info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-096886-B-C51http://dx.doi.org/10.1007/s11207-021-01915-0Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2642052026-05-22T06:33:51Z |
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