Membership of Professional Societies• <strong>Solar</strong> Physics Division of Astronomical Society of Americas, USA (Associate Member)• International Astronomical Union• American Geophysical Union• Astronomical Society of India (Life member)• Plasma Science Society of India (Life member)• PRL Alumni Society (Life member)Other Services to Research CommunityServed as a panel and external reviewer in NASA peer review system to evaluate scientificproposals for awards.Refereed Publications:Scientific Publications1. Unusual Trends in <strong>Solar</strong> p-mode Frequencies during the Current Extended Minimum, S.C. Tripathy, K. Jain, F. Hill, J. W. Leibacher, 2010, Ap.J., 711, L842. Variations in p-mode Parameters with Changing Onset-Time of a Large Flare,R. A. Maurya, A. Ambastha, S. C. Tripathy, 2009, Ap. J., 706, L2353. <strong>Solar</strong> Activity Phases and Intermediate-degree Mode Frequencies, K. Jain, S. C.Tripathy, F. Hill, 2009, Ap. J.,695, 1567.4. Comparison of High-degree <strong>Solar</strong> Acoustic Frequencies and Asymmetry betweenVelocity and Intensity Data, S. C. Tripathy, H. M. Antia, K. Jain, F. Hill, 2009, Ap. J,691, 365.5. Seismic Signature of <strong>Solar</strong> Flares, S. C. Tripathy, 2008, Asian Journal of Physics, 17,533.6. Helioseismic Ring Analysis of CME Source RegionsS. C. Tripathy, S. de Wet, K. Jain, R. Clark, F. Hill, 2007, J. Astrophys. Astr., 29, 2077. <strong>Solar</strong> Oscillation Frequency Changes on Time Scales of Nine DaysS. C. Tripathy , F. Hill, K. Jain, J. W. Leibacher, 2007, <strong>Solar</strong> Physics, 243, 1058. Gravito-Electrostatic Sheath Based Model for Surface Origin of subsonic <strong>Solar</strong> WindPlasma, C. B. Dwivedi, P. K. Karmakar, and S.C. Tripathy, 2007, Ap. J., 663, 1340.9. <strong>Solar</strong> cycle changes in GONG and MDI data 1995-2002, S. C. Tripathy, 2003, Bull.Astron. Soc. India, 31, 153.2
10. On the p-mode asymmetry between velocity and intensity spectra from the GONG+ data,S.C. Tripathy, Kiran Jain, F. Hill and C. Toner, 2003, Bull. Astron. Soc. India, 31, 32111. Variation of acoustic power with magnetic field as seen in GONG data, P. Venkatakrishnan,Brajesh Kumar and S.C. Tripathy, 2002, <strong>Solar</strong> Phys., 211, 77.12. How good are the predictions for oscillation frequencies? Kiran Jain, S. C. Tripathy andA. Bhatnagar, 2002, <strong>Solar</strong> Physics, 206, 213.13. Variation of solar irradiance and mode frequencies during Maunder minimum, A.Bhatnagar, Kiran Jain and S.C. Tripathy, 2002, Astrophysics and Space Science, 281,761.14. Search for spatial variability in the solar acoustic spectrumP. Venkatakrishnan, Brajesh Kumar and S.C. Tripathy, 2001, <strong>Solar</strong> Physics, 206, 21315. <strong>Solar</strong> rotation rate from minimum to maximum of activity cycle, Kiran Jain, S. C.Tripathy, A. Bhatnagar and B. Kumar, Bull. Astron. Soc. India, 2001, 29, 239.16. Analysis of hysteresis effect between p-mode frequency shifts and solar activity indices,S.C. Tripathy, B. Kumar, Kiran Jain and A. Bhatnagar, <strong>Solar</strong> Physics, 2001, 200, 3.17. <strong>Solar</strong> cycle induced variation in GONG p-mode frequencies and splittings, Kiran Jain, S.C. Tripathy and A. Bhatnagar, Ap. J, 2000, 542, 521.18. Empirical estimate of p mode frequency shift for solar cycle 23, Kiran Jain, S.C.Tripathy, A. Bhatnagar and Brajesh Kumar, 2000, <strong>Solar</strong> Physics, 192, 487.19. p modes in and away from a sunspot, B. Kumar, R. Jain, S.C. Tripathy, H.O. Vats andM.R. Deshpande 2000, <strong>Solar</strong> Physics, 191, 295.20. A relation between freqeuncy shift and the changes in activity indices, Kiran Jain, S.C.Tripathy, A. Bhatnagar and Brajesh Kumar, 2000, Bull. Astron. Soc. India, 28, 89.21. GONG p-mode frequency changes with solar activity, A. Bhatnagar, Kiran Jain and S.C.Tripathy, 2000, Bull. Astron. Soc. India, 28, 91.22. On the power and frequency of p-modes in sunspots, Brajesh Kumar, S.C. Tripathy,Rajmal Jain and M.R. Deshpande, 2000, Bull. Astron. Soc. India, 28, 93.23. Helioseismic solar cycle changes and splitting coefficientsS.C. Tripathy, Kiran Jain, and A. Bhatnagar, J. Astrophys. Astr., 2000, 21, 349.24. Observation of hysteresis between solar activity indicators and p-mode frequency shiftsfor solar cycle 22, S.C. Tripathy, Brajesh Kumar, Kiran Jain and A. Bhatnagar, J. Astrophys.Astr., 2000, 21, 357.25. GONG p-mode frequency changes with solar activity, A. Bhatnagar, Kiran Jain and S.C.Tripathy, 1999, Ap.J., 521, 885.3