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Publication . Conference object . Other literature type . 2021

Rieger-type periodicity in total irradiance of the Sun as a star

Gurgenashvili, Eka;
Open Access
Published: 25 Feb 2021
Publisher: Zenodo
Abstract
Rieger type periodicity is a mid-range periodicity of 150-200 days in solar activity (Rieger et al. 1984). The periodicity can be found in many solar activity indices. Total solar irradiance permits Sun as a star to study stellar light curves from recent space missions. We study periodic variations of total solar irradiance (TSI) based on SATIRE-S and SOHO/VIRGO data during solar cycles 23-24 on time scales of Rieger-type periodicity. We then compare the power spectrum of oscillations in total solar irradiance to those of sunspot and faculae data to determine their contributions.
Subjects

The Sun and the Heliosphere

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