On the variations in the parameters of high-degree acoustic modes with solar cycle

We analyze the pattern of behavior of p-mode wave packets with solar cycle using TON one-day helioseismic data with a high spatial resolution. The time--distance method is used to perform this task. We make an attempt to determine the variations in the travel time of acoustic waves at maximum and mi...

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Published inAstronomy letters Vol. 30; no. 8; pp. 577 - 581
Main Authors KHOLIKOV, Sh. S, BURTSEVA, O. S, SEREBRYANSKIY, A. V, EHGAMBERDIEV, Sh. A
Format Journal Article
LanguageEnglish
Published New York, NY Pleiades Publishing 01.08.2004
Springer Nature B.V
Subjects
Solar activity
Solar flares
Travel time
Parameter variation
Solar cycle
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Summary:We analyze the pattern of behavior of p-mode wave packets with solar cycle using TON one-day helioseismic data with a high spatial resolution. The time--distance method is used to perform this task. We make an attempt to determine the variations in the travel time of acoustic waves at maximum and minimum solar activity; at maximum activity, this time decreases by 2 s compared to that at minimum activity to a depth of 0.8R^sub ^. In addition, the correlation amplitudes of acoustic wave packets from minimum to maximum solar activity were found to decrease by 10-20% for all angular distances.[PUBLICATION ABSTRACT]
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ISSN:1063-7737
1562-6873
DOI:10.1134/1.1784499