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pro vyhledávání: '"Ravindra, Belur"'
The Ca-K spectroheliograms obtained at the Kodaikanal observatory (KO) are used to generate a uniform time series using the equal contrast technique (ECT) to study the long and short-term variation in the solar chromosphere. The percentage of plage,
Externí odkaz:
http://arxiv.org/abs/2212.08382
Publikováno v:
ApJ, 2022
The Kodaikanal Observatory has made synoptic observations of the Sun in white light since 1904, and these images are sketched on the Stonyhurst grids called sun charts. These continuous hand-drawn data sets are used for long-term studies of the Sun.
Externí odkaz:
http://arxiv.org/abs/2211.01651
Publikováno v:
In Physics Open May 2024 19
Akademický článek
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Akademický článek
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Publikováno v:
Astrophysical Journal; 11/20/2022, Vol. 940 Issue 1, p1-20, 20p
Publikováno v:
The Astrophysical Journal. 925:81
The Kodaikanal Observatory has provided long-term synoptic observations of chromospheric activities in the Ca ii K line (393.34 nm) since 1907. This article investigates temporal and periodic variations of the hemispheric Ca–K-index time series in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e9ab72c7b7f78754ffe2629d19c3873
https://doi.org/10.3847/1538-4357/ac3983
https://doi.org/10.3847/1538-4357/ac3983
Publikováno v:
Astrophysical Journal; 3/8/2022, Vol. 927 Issue 2, p1-12, 12p
In our previous article (Priyal et al. in Solar Phys. 289, 127, 2014) we have discussed the details of observations and methodology adopted to analyze the Ca-K spectroheliograms obtained at the Kodaikanal Observatory (KO) to study the variation of Ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00fb86224c4efacf104b52538b2d144b
http://arxiv.org/abs/1707.00411
http://arxiv.org/abs/1707.00411
Autor:
T. G. Priya, Selvendran Raju, Kumaravel Pichaimani, Amareswari Kotikalapudi, Ravindra Belur, Jagdev Singh, Muthu Priyal
Publikováno v:
Research in Astronomy and Astrophysics. 12:201-211
In general, it is believed that plages and sunspots are the main contributors to solar irradiance. There are small-scale structures on the Sun with intermediate magnetic fields that could also contribute to solar irradiance, but it has not yet been q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42e5d75f882249d32db55ce1750585b9
https://doi.org/10.1088/1674-4527/12/2/008
https://doi.org/10.1088/1674-4527/12/2/008