Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Nagovitsyn Yury A."'
Publikováno v:
Journal of Space Weather and Space Climate, Vol 11, p 4 (2021)
We briefly review the history of observations of magnetic fields on the Sun, and describe early magnetograps for full disk measurements. Changes in instruments and detectors, the cohort of observers, the knowledge base etc may result in non-uniformit
Externí odkaz:
https://doaj.org/article/79449ce11e894c7faf1328d6bc6e59f1
Publikováno v:
In Advances in Space Research 1 December 2024 74(11):6097-6103
The aim of this work is to create a long (410 years) series of average annual total sunspot areas AR - physically-based index of sunspot activity. We used telescopic observations of the AR index in 1832-1868 and 1875-2020, as well as the relationship
Externí odkaz:
http://arxiv.org/abs/2105.06519
Autor:
Velasco Herrera, Victor Manuel, Soon, Willie, Babynets, Nelya, Muraközy, Judit, Tlatov, Andrey G., Nagovitsyn, Yury A., Qiu, Shican, Švanda, Michal, Velasco Herrera, Policarpo Arol
Publikováno v:
In Advances in Space Research 1 March 2024 73(5):2788-2815
Early telescopic observations of sunspots were conducted with instruments of relatively small aperture. These instruments also suffered from a higher level of scattered light, and the human eye served as a "detector". The eye's ability to resolve sma
Externí odkaz:
http://arxiv.org/abs/1907.04932
Autor:
Pevtsov, Alexei A., Nandy, Dibyendu, Usoskin, Ilya, Pevtsov, Alexander A., Corti, Claudio, Lefèvre, Laure, Owens, Mathew, Li, Gang, Krivova, Natalie, Saha, Chitradeep, Perri, Barbara, Brun, Allan S., Strugarek, Antoine, Dayeh, Maher A., Nagovitsyn, Yury A., Erdélyi, Robertus
Publikováno v:
In Advances in Space Research August 2023
In 2015 the calculation of the International (Zurich) sunspot number was cancelled, and it was replaced by a new "recalibrated" series. A new data series was proposed also for the Group sunspot number. As a result, these two series which originally d
Externí odkaz:
http://arxiv.org/abs/1701.06165
Autor:
Nagovitsyn, Yury1,2 (AUTHOR), Pevtsov, Alexei3 (AUTHOR), Osipova, Aleksandra1 (AUTHOR) osisasha@gmail.com
Publikováno v:
Solar Physics. Sep2023, Vol. 298 Issue 9, p1-15. 15p.
Using observations of sunspot magnetic field strengths (H) from the Crimean Astrophysical Observatory (CrAO) and area (S) of sunspots from the Kislovodsk Mountain Astronomical Station of Pulkovo Observatory, we investigate the changes in the relation
Externí odkaz:
http://arxiv.org/abs/1608.01132
Akademický článek
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