7 papers
Latitude-Dependent Time Variations of the Solar Tachocline
Sarbani Basu, Sylvain G. Korzennik, Sushanta C. Tripathy
We have examined how the characteristics of the tachocline -- i.e., the change in rotation rate , or the "jump", the position of the midpoint of the tachocline, , and th…
Resolving the Tachocline using Inversion of Rotational Splitting Derived from Fitting Very Long and Long Time Series
Sylvain G. Korzennik, Antonio Eff-Darwich
We use rotation splittings derived from very long and long time series, namely 25.2, 12.6 and 6.3 year long, computed by Korzennik (2023) independent methodology to characterize th…
The Shape of the Solar Tachocline
Sarbani Basu, Sylvain G. Korzennik
Early helioseismic results have shown that the tachocline has a prolate shape. However, the models used in those studies constrained the tachocline to be either prolate or oblate.…
Investigating Variations in Solar Differential Rotation by Helioseismology
Krishnendu Mandal, Alexander G. Kosovichev, Valery V. Pipin +1
Helioseismic signatures of dynamo waves have recently been discovered in variations of the solar differential rotation, offering valuable insights into the type of dynamo mechanism…
Structure and Dynamics of the Sun's Interior Revealed by Helioseismic and Magnetic Imager
Alexander Kosovichev, Sarbani Basu, Yuto Bekki +43
High-resolution helioseismology observations with the Helioseismic and Magnetic Imager (HMI) onboard Solar Dynamics Observatory (SDO) provide a unique three-dimensional view of the…
Time Variation of the Solar Tachocline
Sarbani Basu, Wesley Antônio Machado Andrade de Aguiar, Sylvain G. Korzennik
We have used solar oscillation frequencies and frequency splittings obtained over solar cycles 23, 24 and the rising phase of solar cycle 25 to investigate whether the tachocline p…