6 papers · 1 filter
Solar cycle variation in GONG and MDI data: 1995-2002
S. C. Tripathy
Both GONG and MDI projects have measured {\it p}-mode frequencies of the Sun for more than 7 years. Here we review what we have learnt from the temporal variation of the oscillatio…
On the p-mode asymmetry between velocity and intensity from the GONG+ data
S. C. Tripathy, Kiran Jain, Frank Hill +1
We have analyzed the local acoustic spectra of small regions over the solar surface at different locations from disk center to limb via the technique of ring diagrams. It is found…
On the solar rotation rate in the upper convection zone
Kiran Jain, S. C. Tripathy, A. Bhatnagar
We present results on variation in rotation rate in the upper convection zone using data from GONG and MDI/SOHO covering a period of more than four years. We find that the first fe…
Temporal evolution of f-mode frequencies and radius
Kiran Jain, S. C. Tripathy, A. Bhatnagar
We have analysed temporal evolution in centroid frequencies and splitting coefficients of solar f-modes obtained from MDI/SOHO. The data were divided into 20 sets covering a period…
Ring diagram analysis of velocity fields within the solar convection zone
Sarbani Basu, H. M. Antia, S. C. Tripathy
Ring diagram analysis of solar oscillation power spectra obtained from MDI data is performed to study the velocity fields within the solar convection zone. The three dimensional po…
Seismic investigation of the solar structure using GONG frequencies
S. C. Tripathy, H. M. Antia, F. Hill +1
Using the recently obtained GONG frequencies, we investigate the properties of the solar interior by constructing solar models with various input physics like opacities, equation o…