Mapping solar magnetic fields from the photosphere to the base of the corona
Result description
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.
Keywords
The result's identifiers
Result code in IS VaVaI
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Mapping solar magnetic fields from the photosphere to the base of the corona
Original language description
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.
Czech name
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Czech description
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Classification
Type
Jimp - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Science Advances
ISSN
2375-2548
e-ISSN
2375-2548
Volume of the periodical
7
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
eabe8406
UT code for WoS article
000620146100033
EID of the result in the Scopus database
2-s2.0-85101379465
Basic information
Result type
Jimp - Article in a specialist periodical, which is included in the Web of Science database
OECD FORD
Astronomy (including astrophysics,space science)
Year of implementation
2021