The Subterahertz Solar Cycle: Polar and Equatorial Radii Derived from SST and ALMA
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00553768" target="_blank" >RIV/67985815:_____/21:00553768 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3847/1538-4357/abe41c" target="_blank" >https://doi.org/10.3847/1538-4357/abe41c</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/1538-4357/abe41c" target="_blank" >10.3847/1538-4357/abe41c</a>
Alternative languages
Result language
angličtina
Original language name
The Subterahertz Solar Cycle: Polar and Equatorial Radii Derived from SST and ALMA
Original language description
In this work, we use data from the Solar Submillimeter-wave Telescope (SST) and the Atacama Large Millimeter/submillimeter Array (ALMA) at frequencies of 100, 212, 230, and 405 GHz to measure the equatorial and polar radii of the Sun. The radii measured with extensive data from the SST agree with the radius-versus-frequency trend present in the literature. The radii derived from ALMA maps at 230 GHz also agree with the radius-versus-frequency trend, whereas the 100 GHz radii are slightly above the values reported by other authors. In addition, we analyze the equatorial and polar radius behavior over the years by determining the correlation coefficient between solar activity and subterahertz radius time series at 212 and 405 GHz (SST). The variations of the SST-derived radii over 13 yr are correlated to the solar activity when considering equatorial regions of the solar atmosphere and anticorrelated when considering polar regions. The ALMA-derived radius time series for 100 and 230 GHz show very similar behaviors with those of SST.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
—
Continuities
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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
Astrophysical Journal
ISSN
0004-637X
e-ISSN
1538-4357
Volume of the periodical
910
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
7
Pages from-to
77
UT code for WoS article
000635090900001
EID of the result in the Scopus database
2-s2.0-85103545314