Sensitivity of Global Oscillation Frequencies to Solar Activity on Short Timescales

Abstract Sun’s oscillations frequencies vary with the changing magnetic activity and hold a strong positive correlation. While most of the analysis for global modes have been carried out using time series longer than a solar rotation, only a few studies are available showing their variation on short...

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Bibliographic Details
Published inResearch notes of the AAS Vol. 8; no. 10; pp. 264 - 263
Main Authors Tripathy, Sushanta C., Jain, Kiran
Format Journal Article
LanguageEnglish
Published The American Astronomical Society 15.10.2024
Subjects
Helioseismology
Solar activity
Solar interior
Solar oscillations
Solar physics
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Summary:Abstract Sun’s oscillations frequencies vary with the changing magnetic activity and hold a strong positive correlation. While most of the analysis for global modes have been carried out using time series longer than a solar rotation, only a few studies are available showing their variation on shorter timescales. Using Doppler observations from Global Oscillation Network Group during the period 1995–2024, we analyze oscillation frequencies computed on a timescale of nine days and compare them with those obtained from 108 days. We also study their sensitivity in cycles 23 and 24 to the change in solar activity as represented by the 10.7 cm radio flux.
Bibliography:AAS58814
The Sun and the Heliosphere
ISSN:2515-5172
2515-5172
DOI:10.3847/2515-5172/ad85e8