On the Variations in the Parameters of High-Degree Acoustic Modes with Solar Cycle

Details On the Variations in the Parameters of High-Degree Acoustic Modes with Solar Cycle On the Variations in the Parameters of High-Degree Acoustic Modes with Solar Cycle

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004astl...30..577k&link_type=abstract

Astronomy Letters, vol. 30, p. 577-581 (2004)

Astronomy and Astrophysics

Astronomy

1

Scientific paper

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 0.8 Rsolar. 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.

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