期刊
SCIENCE ADVANCES
卷 7, 期 8, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abe8406
关键词
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资金
- JAXA as a Small Mission-of-Opportunity Program
- JSPS KAKENHI [JP25220703, JP16H03963]
- 2015 ISAS Grant for Promoting International Mission Collaboration
- 2016 NAOJ Grant for Development Collaboration
- NASA [16-HTIDS16_2-0027, NNG09FA40C]
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program [742265]
- CNES funds [CLASP2-13616A, 13617A]
- European Research Council [742265]
- Swiss National Science Foundation [200021-175997, CRSII5-180238]
- Grant Agency of the Czech Republic [19-20632S, RVO:67985815]
- Research Council of Norway through its Centres of Excellence scheme [262622]
- Research Council of Norway
- [JP19K14771]
Unprecedented spectropolarimetric observations of an active region plage and its surrounding enhanced network reveal the role of magnetic field in coupling different atmospheric layers and heating the plage chromosphere.
Routine ultraviolet imaging of the Sun's upper atmosphere shows the spectacular manifestation of solar activity; yet, we remain blind to its main driver, the magnetic field. Here, we report unprecedented spectropolarimetric observations of an active region plage and its surrounding enhanced network, showing circular polarization in ultraviolet (Mg II h & k and Mn I) and visible (Fe I) lines. We infer the longitudinal magnetic field from the photo-sphere to the very upper chromosphere. At the top of the plage chromosphere, the field strengths reach more than 300 G, strongly correlated with the Mg II k line core intensity and the electron pressure. This unique mapping shows how the magnetic field couples the different atmospheric layers and reveals the magnetic origin of the heating in the plage chromosphere.
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