The features of longitudinal distribution of solar spots during the last 13 solar activity minima

Autor:	I. G. Kostuchenko, E. E. Benevolenskaya
Rok vydání:	2015
Předmět:	Sunspot Geophysics Astrophysics Magnetic flux Latitude Solar cycle Dipole Space and Planetary Science Observatory Physics::Space Physics Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Solar dynamo Longitude Geology
Zdroj:	Geomagnetism and Aeronomy. 55:1039-1044
ISSN:	1555-645X 0016-7932
DOI:	10.1134/s0016793215080162
Popis:	We analyzed the features of the longitudinal distribution of the areas of solar spots during the solar activity minima, from the 11th cycle to the last minimum, based on data provided by the Greenwich Observatory and the Marshall Research Center. We discovered that the solar spots evolved in one or two neighboring bands (in terms of longitude), the Carrington longitude of which smoothly displaced from the east to the west, in the phase of the deep minimum in all of the considered cases. The spots at the high latitudes associated with a “new” cycle evolved on the same longitude bands. All of this led to the noticeable longitudinal asymmetry of magnetic fluxes related to the spots and flocculi. Based on our research, we propose the hypothesis that a nonaxisymmetric component of the total magnetic flux of the Sun is generated, together with the dipole component, by the solar dynamo mechanism, which is a typical feature of the phase of a minimum between the solar activity cycles.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::797e1c4f579da9ddf35864a4bc5034eb https://doi.org/10.1134/s0016793215080162 Zobrazit plný text záznamu Full text from SpringerLink