Curriculum Vitae - NSO - National Solar Observatory

CURRICULUM VITAENameSushanta Chandra TripathyNationalityPresent PositionWork AddressPrevious EmploymentsIndianAssociate ScientistNational Solar Observatory950 N. Cherry AvenueTucson, AZ 85719, USAe-mail: stripathy@noao.eduhttp://www2.nso.edu/staff/sushantPhone: +1-520-318-8300Fax: +1-520-318-8400Assistant Scientist at NSO Aug. 19, 2004 to Sep. 30, 2010Reader at PRL Jan. 1, 2002 to Aug.13, 2004Scientist D at PRL Jan. 24, 1995 to Dec. 31, 2001GONG Project Scientist at USO Sep. 20, 1993 to Jan. 23, 1995Post-Doctoral Fellow at USO Jun. 20, 1992 to Jun. 19, 1993Post-Doctoral Fellow at PRL Jun. 20, 1991 to Jun. 19, 1992Educational QualificationMarch 1993: Awarded Ph.D. on the Thesis entitled “Plasma Magnetosphere Around CompactObjects” from Gujarat University, Ahmedabad1985-1992: Graduate Studies1984: Passed M.Sc. Examination of Utkal University1982: Passed B.Sc. Examination of Utkal UniversityResearch InterestsSolar PhysicsPlasma AstrophysicsGeneral RelativitySolar models, Global and Local Helioseismology,Activity Cycle, CMEs, Active Regions, Flares, andProminencesPlasma Magnetospheres around Compact Objects,Accretion Disks, Heliospheric Plasma PhysicsApplication to Accretion Disks, Black Holes etc.I also have extensive knowledge of tools for scientific research .e.g. ForTran, InteractiveData Language (IDL), and Image Reduction and Analysis (IRAF) etc.1

Membership of Professional Societies• Solar 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 Solar 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. Solar Activity Phases and Intermediate-degree Mode Frequencies, K. Jain, S. C.Tripathy, F. Hill, 2009, Ap. J.,695, 1567.4. Comparison of High-degree Solar 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 Solar 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. Solar Oscillation Frequency Changes on Time Scales of Nine DaysS. C. Tripathy , F. Hill, K. Jain, J. W. Leibacher, 2007, Solar Physics, 243, 1058. Gravito-Electrostatic Sheath Based Model for Surface Origin of subsonic Solar WindPlasma, C. B. Dwivedi, P. K. Karmakar, and S.C. Tripathy, 2007, Ap. J., 663, 1340.9. Solar 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, Solar Phys., 211, 77.12. How good are the predictions for oscillation frequencies? Kiran Jain, S. C. Tripathy andA. Bhatnagar, 2002, Solar 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, Solar Physics, 206, 21315. Solar 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, Solar Physics, 2001, 200, 3.17. Solar 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, Solar 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, Solar 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

26. Influence of surface layers on seismic estimate of solar radius, S.C. Tripathy and H.M.Antia, 1999, Solar Physics, 186, 1.27. Ring diagram analysis of near surface flows in the sun, S. Basu, H.M. Antia and S. C.Tripathy, 1999, Ap.J., 512, 458.28. Detection of H intensity oscillations in solar flares, R. Jain and S.C. Tripathy, 1998,Solar Physics, 181, 113.29. Investigation of opacity effects on the solar interior-I: Solar structure, S. C. Tripathy andJ. Christensen-Dalsgaard, 1998, Astron. Astrophys., 337, 579.30. Chromospheric evolution and flare activity of surface active region 6555, Debi PrasadC., A. Ambastha, N. Srivastava, S.C. Tripathy and Mona J. Haygard, 1997, J. Astrophys.Astr., 18, 39.31. Correlation study between sunspot and rainfall in Udaipur sub-region, R. Jain and S. C.Tripathy, 1997, Mausam, 48(3), 405.32. Testing the helioseismic determination of opacity corrections, S.C. Tripathy and J.Christensen-Dalsgaard, 1997, Bull. Astron. Soc. India, 26, 163.33. Effects on solar structure of opacity changes, S.C. Tripathy and J. Christensen-Dalsgaard, 1996, Bull. Astron. Soc. India, 24, 129.34. Nonlinear shock structure in a weakly ionized magneto-plasma C.B. Dwivedi, S.C.Tripathy, 1994, Annales Geopphysicae, 12, 1139.35. Plasma instability at the inner edge of the accretion disc-II, S.C. Tripathy, C.B. Dwivedi,A.C. Das, and A.R. Prasanna, 1993, J. Astrophys. Astr., 14, 16736. Plasma instability at the inner edge of the accretion disc- I, S.C. Tripathy, C.B. Dwivedi,A.C. Das and A.R. Prasanna, 1993, J. Astrophys. Astr. 14, 10337. Accretion disc with a dipole magnetic field in linearized Kerr geometry, P. Bhaskaran,S.C. Tripathy and A.R. Prasanna, 1990, J. Astrophys. Astr., 11, 461.38. Accreting magnetofluid around a compact object with a dipolar magnetic field- ANewtonian analysis, S.C. Tripathy, A.R. Prasanna and A.C. Das, 1990, Mon. Not. R.Ast. Soc., 246, 384.39. Equilibrium structure for a plasma magnetosphere around a compact object, A. R.Prasanna, S.C. Tripathy and A.C. Das, 1989, J. Astrophys. Astr., 10, 21.4

Conference Proceedings40. What Solar Oscillation Tell us About the Solar Minimum, K. Jain, S. C. Tripathy , O.Burtseva, I. Gonzalez Hernandez, F. Hill, R. Howe, S. Kholikov, R. Komm, J. W.Leibacher, 2010, Eds. S. Cranmer, T. Hoeksema, J. Kohl , ASP Conf. Ser., 428, 5741. Inhomogeneous Power Distribution in Magnetic Oscilations. K. Jain., S. C. Tripathy, S.Kholikov, F. Hill, 2010, Proc. Of Helas IV, Astronomical Notes, in Press42. Do Active Regions Modify Oscillation Frequencies, S. C. Tripathy, K. Jain and F. Hill,2010, eds. S.S. Hasan and R.J. Rutten, Astrophysics and Space Science Proc., Springer-Verlag, Heidelberg, Berlin, 37443. Does the Selection of a Quiet Region Influence the Local Helioseismic Inferences? S. C.Tripathy, H. M. Antia, K. Jain and F. Hill, in GONG 2008/SOHO XXI: Solar-StellarDynamos as Revealed by Helio- and Astero-seismology, 2009, ASP Conf. Ser., 416, 13944. Variation of Oscillation Mode Parameters over the Solar Cycle 23: An analysis onDifferent Time Scales, S. C. Tripathy, K. Jain, J. W. Leibacher and F. Hill, in GONG2008/SOHO XXI: Solar-Stellar Dynamos as Revealed by Helio- and Astero-seismology,2009, ASP Conf. Ser., 416, 28545. Correlation Analysis of Mode Frequencies with Activity Proxies at Different Phases ofthe Solar Cycle, K. Jain, S. C. Tripathy and F. Hill, , in GONG 2008/SOHO XXI: Solar-Stellar Dynamos as Revealed by Helio- and Astero-seismology. 2009, ASP Conf. Ser.,416, 18946. Amplitude of High-degree p-Modes in the Quiet and Active Sun, O. Burtseva, S. C.Tripathy, F. Hill, Sh. Kholikov, N.-E. Raouafi, and C. Lindsey, in GONG 2008/SOHOXXI: Solar-Stellar Dynamos as Revealed by Helio- and Astero-seismology. 2009, ASPConf. Ser., 416, 29347. Multi-Spectral Analysis of Acoustic Mode Characteristics in Active Regions, K. Jain, F.Hill, S. C. Tripathy, I. Gonzalez Hernandez, J. D. Armstrong, S. M. Jefferies, E. J.Rhodes, P. J. Rose, 2008, “, eds. R.. Howe, R. W. Komm, K. S. Balasubramaniam, G. J.D. Petrie, ASP Conf. Series, 383, 389.48. Changes to Global Mode Parameters over a Solar Cycle, S.C. Tripathy, F. Hill, K. Jain,J. W. Leibacher, 2006, Proceedings of SOHO18/GONG 2006/HELAS I, Beyond theSpherical Sun, eds. K. Fletcher and M. J. Thompson, ESA-SP-624 , p.93.1.49. Comparison of Local Frequency Shifts between Velocity and Intensity Data, S.C.Tripathy, H.M. Antia, F. Hill, K. Jain, I. Gonzalez-Hernandez, et al., 2006, Proceedingsof SOHO18/GONG 2006/HELAS I, Beyond the Spherical Sun, eds. K. Fletcher and M. J.Thompson, ESA-SP-624 , p.104.1.50. A comparison of Acoustic Mode Parameters using Multi-Spectral DataK. Jain, F. Hill, S.C. Tripathy, H.M. Antia, J.D. Armstrong, S.M. Jefferies, E. J. Rhodes,5

Jr., P. J. Rose, 2006, Proceedings of SOHO18/GONG 2006/HELAS I, Beyond theSpherical Sun, eds. K. Fletcher and M. J. Thompson, ESA-SP-624 , p.103.1.51. Does the Inference of Solar Subsurface Flow Change with Choice of the Spectral Line?K. Jain, F. Hill, I. Gonzalez-Hernandez, C. G. Toner, S.C. Tripathy, J.D. Armstrong,S.M. Jefferies, E. J. Rhodes, Jr., P. J. Rose, 2006, Proceedings of SOHO18/GONG2006/HELAS I, Beyond the Spherical Sun, eds. K. Fletcher and M. J. Thompson, ESA-SP-624 , p.127.1.52. MDI and GONG Inferences of the Changing Sun, O. Burtseva, I. Gonzalez-Hernandez,F. Hill, R. Howe, K. Jain, S. Kholikov, R. Komm, J. W. Leibacher, C. Toner, S.C.Tripathy, D. Haber, B. Hindman, O. Ladenkov, and D.-Y. Chou, 2006, SOHO 17, 10Years of SOHO and Beyond, eds. H. Lacoste and L. Ouwehand, ESA-SP 617, p.41.1.53. Variations of solar p-mode frequencies on time scales comparable to the Sun’s rotationperiod, S.C. Tripathy, Frank Hill, Kiran Jain and A. Bhatnagar, 2003, in Probing the Sunwith high resolution, eds: S. C. Tripathy and P. Ventakatakrishnan, p. 19.54. Solar cycle changes in mode frequencies from 1995 – 2001, Kiran Jain, S.C. Tripathyand A. Bhatnagar, 2003, in Probing the Sun with high resolution, eds: S. C. Tripathy andP. Ventakatakrishnan, p. 191.55. A test of empirical relation between p-mode frequencies and solar activity, Kiran Jain,S.C. Tripathy and A. Bhatnagar, 2003, in Probing the Sun with high resolution, eds: S.C. Tripathy and P. Ventakatakrishnan, p. 195.56. How correlated are mode parameters with solar activity?, S.C. Tripathy, Kiran Jain andA. Bhatnagar, 2003, in Probing the Sun with high resolution, eds: S. C. Tripathy and P.Ventakatakrishnan, p. 199.57. Magnetic field related variations in the solar acoustic spectra, P. Venkatakrishnan, B.Kumar, S.C. Tripathy, 2003, in Probing the Sun with high resolution, eds: S. C. Tripathyand P. Ventakatakrishnan, p. 203.58. Estimate of solar seeing from GONG data, Pooja Vajpayee, A. Bhatnagar, Kiran Jain andS.C. Tripathy, 2003, in Probing the Sun with high resolution, eds: S. C. Tripathy and P.Ventakatakrishnan, p. 209.59. On solar rotation rate in the upper convection zone, Kiran Jain, S.C. Tripathy and A.Bhatnagar, 2001, in SOHO 10/GONG 2000 Workshop - Helio- and Asteroseismology atthe dawn of the millennium, ed. Andrew Wilson, ESA-SP 464, , p. 641.60. Temporal Evolution of f-mode frequencies and radius, Kiran Jain, S.C. Tripathy and A.Bhatnagar, 2001, in SOHO 10/GONG 2000 Workshop - Helio- and Asteroseismology atthe dawn of the millennium, ed. Andrew Wilson, ESA-SP 464, p 95.61. H-alpha intensity oscillations in solar flares, Rajmal Jain, S.C. Tripathy, Lokesh Bharatiand Brajesh Kumar, 1999, in High Resolution Solar Physics: Theory, Observations, andTechniques, eds. T.R. Rimmele, K.S. Subramaniam, R.R. Radick, ASP Conferenceseries, 183, p.531.6

62. Ring diagram analysis of velocity fields within the solar convection zone, S. Basu, H.M.Antia and S. C. Tripathy, 1999, in Structure and Dynamics of the Sun and Sun-like Stars,eds. S.G. Korzennik and A. Wilson, ESA-SP-418, p. 705.63. Seismic investigation of the solar structure usng GONG frequencies, S.C. Tripathy, H.M.Antia, F.Hill and A. Ambastha, 1997, in: Poster Volume; Proc. IAU Symposium No.181: Sounding Solar and Stellar Interiors, eds. F.X. Schmider and J. Provost, NiceObservatory, p.12764. Helioseismic determination of opacity corrections, S.C. Tripathy, S. Basu and J.Christensen-Dalsgaard, 1997, in: Poster Volume; Proc. IAU Symposium No. 181:Sounding Solar and Stellar Interiors, eds. F.X. Schmider and J. Provost, NiceObservatory, p.12965. The effect of opacity modifications on solar structure and oscillations, S.C. Tripathy andJ. Christensen-Dalsgaard, 1995, in GONG'94: Helio- and Asteroseismology from theEarth and Space, eds R.K. Ulrich, E.J. Rhodes, Jr. and W. Dappen, ASP Conf. Ser. 76,p. 132.66. Detection of chromospheric oscillations in high-l data, S. C. Tripathy and Frank Hill,1995, in GONG'94: Helio- and Asteroseismology from the Earth and Space, eds R.K.Ulrich, E.J. Rhodes, Jr. and W. Dappen, ASP Conf. Ser. 76, p. 334.Books Edited “Probing the Sun with High Resolution”, Udaipur, 2003, eds. S.C. Tripathy and P.Venkatakrishnan, Narosa Publishing House, New Delhi, India7