1. Ranadeep Sarkar and Nandita Srivastava,  A Comparative Study of the Eruptive and Non-eruptive Flares Produced by the Largest Active Region of Solar Cycle 24 , Solar Physics, 293: 16, (2018)
  2. Nandita Srivastava, Wageesh Mishra and D. Chakrabarty, Interplanetary and Geomagnetic Consequences of Interacting CMEs of 13 – 14 June 2012 Solar Physics, 293: 5, (2018)


  1. Vipin K.Yadav, Nandita Srivastava, S.S.Ghosh, P.T. Srikar, Krishnamoorthy Subhalakshmi, Science objectives of the magnetic field experiment onboard Aditya-L1 spacecraftAdvances in Space Research, (2017)
  2. Raghavendra Prasad B., Banerjee Dipankar, Singh Jagdev, Nagabhushana S., Kumar Amit, Kamath P. U., Kathiravan S., Venkata Suresh, Rajkumar N., Natarajan V., Juneja Madhur, Somu Pawan, Pant Vaibhav, Shaji Nigar, Sankarsubramanian K., Patra Asit, Venkateswaran R., Adoni Abhijit Avinash, Narendra S., Haridas T. R., Mathew Shibu K., Mohan Krishna R., Amareswari K., Jaiswal Bhavesh, Visible Emission Line Coronagraph on Aditya-L1, Current Science, Vol 113, No. 4, (2017)
  3. Janardhan P., Vadawale Santosh, Bapat Bhas, Subramanian K. P., Chakrabarty D., Kumar Prashant, Sarkar Aveek, Srivastava Nandita, Satheesh Thampi R., Yadav Vipin K., Dhanya M. B., Nampoothiri Govind G., Abhishek J. K., Bhardwaj Anil, Subhalakshmi K., Probing the heliosphere using in situ payloads on-board Aditya-L1, Current Science, Vol 113, No. 4, (2017)
  4. Sankarasubramanian K., Sudhakar Manju, Nandi Anuj, Ramadevi M. C., Adoni Abhijit Avinash, Kushwaha Ankur, Agarwal Anil, Dey Arjun, Joshi Bhuwan, Singh Brajpal, Girish V., Tomar Ishan, Majhi Kamal Kumar, Olekar Manjunath, Bug Monoj, Pala Manohar,Thakur Mukund Kumar, Badagandi Rajeev R., Ravishankar B. T., Garg Sarthak, Sitaramamurthy N., Sridhara N., Umapathy C. N., Gupta Vinod Kumar, Agrawal Vivek Kumar, Yougandar B., X-ray spectrometers on-board Aditya-L1 for solar flare studiesCurrent Science, Vol 113, No. 4, (2017)
  5. Venkatakrishnan P., Mathew Shibu K., Srivastava Nandita, Bayanna A. R., Kumar Brajesh, Ramya Bireddy, Jain Naresh, Saradava Mukesh, The Multi Application Solar Telescope, Current Science, Vol 113, No. 4, (2017)
  6. Wageesh Mishra, Yuming Wang, Nandita Srivastava, Chenglong Shen, Assessing the Nature of Collisions of Coronal Mass Ejections in the Inner Heliosphere, The Astrophysical Journal Supplement Series, Vol 232, No. 1, (2017)
  7. Sanjay Kumar, R. Bhattacharyya, B. Dasgupta and M. S. Janaki, Chaotic magnetic field lines and spontaneous development of current sheetsPhysics of Plasmas, 24, 082902, (2017)
  8. Shibu K. Mathew, Ankala Raja Bayanna, Alok Ranjan Tiwary, Ramya Bireddy, P. Venkatakrishnan, First Observations from the Multi-Application Solar Telescope (MAST) Narrow-Band ImagerSolar Physics, 292:106, DOI 10.1007/s11207-017-1127-y, (2017)
  9. Rahul Yadav, Shibu K. Mathew, Alok Ranjan Tiwary, SPIN: An Inversion Code for the Photospheric Spectral LineSolar Physics, 292:105, DOI 10.1007/s11207-017-1131-2, (2017)
  10. Brajesh Kumar, Savita Mathur, Rafael A. Garcia, and Antonio Jimenez, On the signatures of flare-induced global waves in the Sun: GOLF and VIRGO observationsMonthly Notices of the Royal Astronomical Society, DOI: 10.1093/mnras/stx1953, (2017)
  11. Mateja Dumbovic, Nandita Srivastava, Yamini K. Rao, Bojan Vrsnak, Andy Devos, Luciano Rodriguez, Validation of the CME Geomagnetic Forecast Alerts Under the COMESEP Alert System, Solar Physics, 292:96, DOI 10.1007/s11207-017-1120-5, (2017)
  12. Sanjay Kumar, R. Bhattacharyya, Simulated evolution of three-dimensional magnetic nulls leading to generation of cylindrically-shaped current sheetsPhysics of Plasmas 24, 064503, (2017)
  13. Alok Ranjan Tiwary, A. Raja Bayanna, Shibu K. Mathew, Estimation of order parameter of a liquid crystal variable retarder using Haller’s approximation,  Applied Optics, 56, 14, 4180-4184, (2017)
  14. Bhuwan Joshi, Upendra Kushwaha, Astrid Veronig, et al., Flux rope eruption from the sigmoid active region NOAA 11719 and associated M6.5 flare: A multi-wavelength studyThe Astrophysical Journal, 834, 42 (16pp), (2017)
  15. A. Prasad, R. Bhattacharyya, and Sanjay Kumar, Magnetohydrodynamic Modeling of Solar Coronal Dynamics with an Initial Non-force-free Magnetic FieldThe Astrophysical Journal, Volume 840, Number 1, (2017)
  16. Alok Ranjan Tiwary, Shibu K. Mathew, A. Raja Bayanna, P. Venkatakrishnan, Rahul Yadav, Imaging Spectropolarimeter for the Multi-Application Solar Telescope at Udaipur Solar Observatory: Characterization of Polarimeter and Preliminary ObservationsSolar Physics, 292: 49, doi:10.1007/s11207-017-1076-5, (2017)
  17. R. Chandra, C.H. Mandrini, B. Schmieder, Bhuwan Joshi , G.D. Cristiani, H. Cremades, E. Pariat, F.A. Nuevo, A.K. Srivastava, and W.Uddin, Blowout jets and impulsive eruptive flares in a bald-patch topology, Astronomy & Astrophysics, 598, A41, (2017)


  1. A Prasad, R Bhattacharyya, A viable non-axisymmetric non-force-free field to represent solar active regions, Physics of Plasmas 23 (11), 114504 (2016)
  2. Bhuwan Joshi, Upendra Kushwaha, Astrid Veronig, and Kyung-Suk Cho, Pre-flare coronal jet and evolutionary phases of a solar eruptive prominence associated with M1.8 flare: SDO and RHESSI observations, The Astrophysical Journal, 832, 130 (15pp), (2016)
  3. Brajesh Kumar, A. Raja Bayanna, P. Venkatakrishnan, and Shibu K. Mathew, Analysis of Sudden Variations in Photospheric Magnetic Fields during a Large Flare and their Influences in the Solar Atmosphere, Research in Astronomy and Astrophysics, Vol 16, No. 8, p. 129, (2016)
  4. S Kumar, R Bhattacharyya, Continuous development of current sheets near and away from magnetic nullsPhysics of Plasmas 23 (4), 044501 (2016)
  5. S Kumar, R Bhattacharyya, B Joshi, PK Smolarkiewicz, On the Role of Repetitive Magnetic Reconnections in Evolution of Magnetic Flux Ropes in Solar Corona, The Astrophysical Journal 830 (2), 80 (2016)
  6. Wageesh Mishra, Yuming Wang and Nandita Srivastava, On understanding the nature of collsions of CMEs observed by STEREOAstrophysical Journal, 831:99, doi:10.3847/0004-637X/831/1/99, (2016)


  1. B Joshi, R Bhattacharyya, KK Pandey, U Kushwaha, YJ Moon, Evolutionary aspects and north-south asymmetry of soft X-ray flare index during solar cycles 21, 22, and 23, Astronomy & Astrophysics 582, A4 (2015)
  2. D Kumar, R Bhattacharyya, PK Smolarkiewicz, Repetitive formation and decay of current sheets in magnetic loops: An origin of diverse magnetic structuresPhysics of Plasmas 22 (1), 012902 (2015)
  3. S Kumar, R Bhattacharyya, PK Smolarkiewicz, On the role of topological complexity in spontaneous development of current sheets, Physics of Plasmas 22 (8), 082903 (2015)
  4. Mishra, W., Srivastava, N., Chakrabarty, D., Evolution and Consequences of Interacting CMEs of 9 - 10 November 2012 Using STEREO/SECCHI and In Situ Observations, Solar Physics 290, 527-552, (2015)
  5. Upendra Kushwaha, Bhuwan Joshi, Astrid M. Veronig, and Yong-Jae Moon, Large-scale Contraction and Subsequent Disruption of Coronal Loops During Various Phases of the M6.2 Flare Associated with the Confined Flux Rope Eruption, The Astrophysical Journal, 807, 101 (18 pp), (2015)
  6. Wageesh Mishra and Nandita Srivastava, Heliospheric Tracking of enhanced density structures of 2010 October 6 CMEJournal of Space Weather and Space Climate, Volume 5, id.A20, 12 pp., (2015)
  7. Wageesh Mishra, Nandita Srivastava and Talwinder Singh, Kinematics of interacting CMEs of 25 and 28 September 2012, JGR, Vol.120, 12, pp. 10221,(2015)
  8. Raja Bayanna, A., Louis, R. E., Chatterjee, S., Shibu, K. Mathew, Venkatakrishnan, P., Membrane-based deformable mirror: intrinsic aberrations and alignment issues, Applied Optics, v. 54, p. 1727-1736, (2015)
  9. Vemareddy, P., Venkatakrishnan, P., and Karthikreddy, S., 2015, Flux Emergence in the Solar Active Region NOAA 11158: The Evolution of Net Current, Research in Astronomy and Astrophysics, Vol. 15No. 9, (2015)


  1. Kumar, S., Bhattacharyya, R., Smolarkiewicz, P. K., Formation of magnetic discontinuities through viscous relaxationPhysics of Plasmas 21, 052904 (2014)
  2. Mishra, W., Srivastava, N., Morphological and Kinematic Evolution of Three Interacting Coronal Mass Ejections of 2011 February 13-15The Astrophysical Journal, 794, 64 (2014)
  3. Mishra, W., Srivastava, N., Davies, J. A., A Comparison of Reconstruction Methods for the Estimation of Coronal Mass Ejections Kinematics Based on SECCHI/HI ObservationsThe Astrophysical Journal 784, 135 (2014)
  4. Goel, S., Mathew, S. K., Automated Detection, Characterization, and Tracking of Sunspots from SoHO/MDI Continuum ImagesSolar Physics 289, 1413-1431 (2014)
  5. Raja Bayanna, A., Mathew, S. K., Venkatakrishnan, P., Srivastava, N., Narrow-Band Imaging System for the Multi-application Solar Telescope at Udaipur Solar Observatory: Characterization of Lithium Niobate EtalonsSolar Physics 289, 4007 (2014)
  6. Suthar, Y., Venkatakrishnan, P., Ravindra, B., Jaaffrey, S. N. A., The Evolution of the Net Twist Current and the Net Shear Current in Active Region NOAA 10930Solar Physics, 289, 2459 (2014)
  7. Raja Bayanna, A., Mathew, S. K., Kumar, B., Louis, R. E., Venkatakrishnan, P., A study of the relation between intensity oscillations and magnetic field parameters in a sunspot: Hinode observationsResearch in Astronomy and Astrophysics 14, 1458, (2014)
  8. Raja Bayanna, A., Kumar, B., Venkatakrishnan, P., Kunchandy Mathew, S., Ravindra, B., Mathur, S., Garcia, R.A., On the line profile changes observed during the X2.2 class flare in the active region NOAA 11158Research in Astronomy and Astrophysics 14, 207 (2014)
  9. Maurya, R. A., Ambastha, A., Chae, J., Activity-related variations of high-degree p-mode amplitude, width, and energy in solar active regionsAstronomy and Astrophysics 561, A123 (2014)
  10. Kushwaha, U., Joshi, B., Cho, K. S., Veronig, A., Tiwari, S. K., Mathew, S. K., Impulsive Energy Release and Non-thermal Emission in a Confined M4.0 Flare Triggered by Rapidly Evolving Magnetic StructuresThe Astrophysical Journal 791, 23 (2014)
  11. Louis, Rohan E., Beck, C., Mathew, Shibu K., Venkatakrishnan, P., Anomalous flows in a sunspot penumbra, Astronomy & Astrophysics, 570, 92 (2014)
  12. Vemareddy, P., Wiegelmann, T., Quasi-static three-dimensional magnetic field evolution in solar active region NOAA 11166 associated with an X1.5 Flare, The Astrophysical Journal, v. 792, p. 40-52, (2014)
  13. Vemareddy, P., Zhang, J., Initiation and eruption process of magnetic flux rope from solar active region NOAA 11719 to Earth-directed CME, The Astrophysical Journal, v. 797, p. 80-91, (2014)


  1. Joshi, A.D., Srivastava, N., Mathew, S.K., Martin, S.F., Rapid Formation and Disappearance of a Filament Barb, Solar Physics, DOI:10.1007/s11207-013-0295-7 (2013) (published online)
  2. Sharma, R., Srivastava, N., Chakrabarty, D, Moestl, C., and Hu, Q., Interplanetary and Geomagnetic consequences of January 5, 2005 CMEs associated with solar eruptive filaments, Journal of Geophysical Research, (2013)
  3. Mishra, W. and Srivastava, N., Estimating the arrival time of Earth-directed CMEs at in situ spacecraft using COR and HI observations from STEREO, Astrophysical Journal, (2013)
  4. Zuccarello, F., Balmaceda, L., Cessateur, G., Cremades, H., Guglielmino, S. L., Lilensten, J., Dudok de Wit, T., Kretzschmar, M., Lopez, F. M., Mierla, M., Parenti, S., Pomoell, J., Romano, P., Rodriguez, L.,Srivastava, N., Vainio, R., West, M. and Zuccarello, F. P., Solar activity and its evolution across the corona, Journal of Space Weather and Space Climate, Vol 3, A18, (2013 )
  5. Louis, Rohan E., Mathew, S. K., Puschmann, K. G., Beck, C., Balthasar, H., Formation of a penumbra in a decaying sunspot, Astronomy & Astrophysics Letters, 552, 7, (2013)
  6. D Kumar, R Bhattacharyya, PK Smolarkiewicz, Formation of magnetic discontinuities through superposition of force-free magnetic fields: Periodic boundaries, Physics of Plasmas 20 (11), 112903, (2013)
  7. Bhuwan Joshi, Upendra Kushwaham, Kyung-Suk Cho, and Astrid Veronig, RHESSI and TRACE observations of multiple flare activity in AR 10656 and associated filament eruptionThe Astrophysical Journal, vol 771, 1 (14 pp), (2013)
  8. Vemareddy, P., Ambastha, A., and Wiegelmann, T., Magnetic structure of solar active region NOAA 11158, Bull. Astron. Soc. India, v. 41, pp. 183-193, (2013)


  1. Vemareddy, P., Ambastha, A., Maurya,R.A., and Chae, J., On the Injection of Helicity by Shearing Motion of Fluxes in Relation to Flares and CMEs, The Astrophysical Journal, 761, 86, (2012)
  2. Vemareddy, P., Ambastha, A., Maurya,R.A., On the Role of Rotating Sunspots in the Activity of Solar Active Region NOAA 11158, The Astrophysical Journal, 761, 60, (2012)
  3. Sharma, R., and Srivastava, N., Presence of solar filament plasma detected in interplanetary coronal mass ejections by in-situ spacecraft, Journal of Space Weather and Space Climate, Vol. 2, id. A10, 10.1051/swsc/2012010, (2012)
  4. Kilpua, E. J., Mierla. M., Rodriguez, L., Zhukov, A., Srivastava, N., and West, M., Estimating travel times of solar minimum coronal mass ejection from the Sun to near 1 AU using multi-spacecraft forward modeling, Solar Physics, Vol. 279, Issue 2, pp. 477-496, (2012)
  5. Maurya, R. A. , Vemareddy, P. Ambastha, A., Velocity and Magnetic Transients Driven by the X2.2 White-Light Flare of 2011 February 15 in NOAA 11158, The Astrophysical Journal, 747, 134, (2012)
  6. Vemareddy, P.; Maurya, R. A.; Ambastha, A.,Filament Eruption in NOAA 11093 Leading to a Two-Ribbon M1 Class Flare and CME, Solar Physics, 277, 337, (2012)
  7. Varma, R.K., Bannerjee, S. B. and Ambastha, A., "Macro-scale observation of curl-free vector potential: A manifestation of quantum modulation of the de Broglie wave", The European Physical Journal D, 66, 39, (2012)
  8. Louis, Rohan E., Ravindra, B., Mathew, Shibu K., Bellot Rubio, Luis R., Raja Bayanna, A., Venkatakrishnan, P., Analysis of a Fragmenting Sunspot Using Hinode Observations, The Astrophysical Journal, 755, 16, (2012)
  9. Louis, Rohan E., Mathew, Shibu K., Bellot Rubio, Luis R., Ichimoto, K., Ravindra, B., Raja Bayanna, A., Properties of Umbral Dots from Stray Light Corrected Hinode Filtergrams, The Astrophysical Journal, 752, 109, (2012)


  1. Joshi, A. D. and Srivastava, N., Acceleration of coronal mass ejections from 3D reconstruction of STEREO Images, The Astrophysical Journal, Volume 739, Issue 1, article id. 8, (2011)
  2. A. D. Joshi and Nandita Srivastava, Kinematics of two eruptive prominences observed by EUVI/STEREO, The Astrophysical Journal , 730, 104 (2011)
  3. Brajesh Kumar, P. Venkatakrishnan, Savita Mathur, Sanjiv Tiwari and R. A.Garcia, On the Flare-induced Seismicity in the Active Region NOAA 10930 and Related Enhancement of Global Waves in the Sun, The Astrophysical Journal, vol 743, p. 29, (2011) 
  4. Mierla, M., Inhester, B., Rodriguez, L., Gissot, S., Zhukov, A., Srivastava, N., On 3D reconstruction of CMEs II Longitudinal width analysis of 31 August 2007 event, Journal of Atmospheric and Solar-Terrestrial Physics, Volume 73, Issue 10, p. 1166-1172, (2011)
  5. R. E. Louis, L. R. Bellot Rubio, S. K. Mathew and P. Venkatakrishnan, Supersonic downflows at the umbra-penumbra boundary of sunspots, The Astrophysical Journal, Vol. 727, No. 1, 49, (2011)
  6. J. Singh, B. Raghavendra Prasad, P. Venkatakrishnan, K. Sankarasubramanian, D. Banerjee, A. R. Bayanna, S. K. Mathew et al., Proposed visible emission line space solar coronagraph, Current Science , 100 (2) , 167, (2011)
  7. Olga Panasenco, Sara Martin, A. D. Joshi and Nandita Srivastava, Rolling motion in eruptive prominences observed by STEREO, JASTP , 73, 1129, (2011)
  8. Nandita Srivastava, Mierla Marilena and L. Rodriguez, On three-dimensional aspects of CMEs, their source regions and interplanetary manifestations: Introduction to special issue, JASTP , 73, 1077, (2011)
  9. B. Schmieder, P. Demoulin, E. Pariat, T. Torok, G. Molodij, C. H. Mandrini, S. Dasso, R. Chandra, W. Uddin, P. Kumar, P. K. Manoharan, P. Venkatakrishnan and Nandita Srivastava, Actors of the main activity in large complex centres during the 23 solar cycle maximum, Advances in Space Research, 47(12), 2081, (2011)
  10. A. R. Bayanna, S. K. Mathew, K. Sankarasubramanian, P. Venkatakrishnan, J. Singh and B. R. Prasad, Issues with external occultation of a coronagraphExperimental Astronomy, 29, 145, (2011)
  11. S. Gosain, S. K. Mathew and P. Venkatakrishnan, Acoustic power absorption and its relation to vector magnetic field of a sunspot, Solar Physics, 268, 335, (2011)
  12. Maurya, R. A.; Ambastha, A., Variations in p-mode Parameters and Sub-surface Flows of Active Regions with Flare ActivityA.S.I. Conf. Series, 2, 189-195 (2011)
  13. Maurya, R. A. , Vemareddy, P. Ambastha, A., Kinetic and magnetic helicities in solar active regions, J.Phys.: Conf.Ser., 271, pp.012003, (2011)
  14. Brajesh Kumar, P. Venkatakrishnan, S. Mathur, S. K. Tiwari and R. A. Garcia, Analysis of peculiar penumbral flows observed in the active region NOAA 10930 during a major solar flare, J. Physics: Conf. Ser., 271a, 2020 (2011)
  15. B Ravindra, P Venkatakrishnan, SK Tiwari, R Bhattacharyya, Evolution of currents of opposite signs in the flare-productive solar active region NOAA 10930, The Astrophysical Journal , Vol. 740 (1), 19, (2011)
  16. D Kumar, R Bhattacharyya, Solar coronal loops as non force-free minimum energy relaxed states, Physics of Plasmas 18 (8), 084506, (2011)
  17. Bhuwan Joshi, Astrid M. Veronig, Jeongwoo Lee, Su-Chan Bong, Sanjiv K.Tiwari, and Kyung-Suk Cho, Pre-flare activity and magnetic reconnection during the evolutionary stages of energy release in a solar eruptive flare, The Astrophysical Journal, vol 743, 195, (2011)


  1. Brajesh Kumar, S. Mathur, R. A. Garcia and P. Venkatakrishnan, On the flare induced high-frequency global waves in the Sun, The Astrophysical Journal, 704, L29, (2010)
  2. A. D. Joshi, Nandita Srivastava and S. K. Mathew, Automated detection of filaments and their disappearance using full-disc H-alpha images, Solar Physics, 262, 425, (2010)
  3. S. Gosain and B. Schmieder, Estimation of width and inclination of a filament sheet using He II 304 Angstrom observations by STEREO/EUVI, Annales Geophysicae, 28, 149, (2010)
  4. R. A. Maurya and A. Ambastha, A technique for automated determination of flare ribbon separation and energy release, Solar Physics, 262, 337, (2010)
  5. R. A. Maurya and A. Ambastha, Sub-surface meridional flow, vorticity and the lifetime of solar active regions, The Astrophysical Journal, 714, L196, (2010)
  6. R. Bhattacharyya, B. C. Low and P. K. Smolarkiewicz, On spontaneous formation of current sheets: Untwisted magnetic fields, Physics of Plasmas, 17, 112901, (2010)
  7. S. Gosain, S. K. Tiwari and P. Venkatakrishnan, On the estimate of magnetic non-potentiality of sunspots derived using Hinode SOT/SP observations: Effect of polarimetric noise, The Astrophysical Journal, 720, 1281, (2010)
  8. S. Gosain and P. Venkatakrishnan, The evolution of twist shear and dip shear during X-class flare of 2006 December 13: Hinode observations, The Astrophysical Journal, 720, L137, (2010)
  9. A. D. Joshi, S. K. Mathew, N. Srivastava, S. F. Martin and S. K. Gupta, A dual beam H-alpha Doppler system to acquire, analyse and anticipate solar eruptive events directed towards Earth, Indian J. Radio & Space Physics, 39, 315, (2010)
  10. S. K. Tiwari, P. Venkatakrishnan and S. Gosain, Magnetic non-potentiality of solar active regions and peak X-ray flux of the associated flares, The Astrophysical Journal, 721, 622, (2010)
  11. P. Venkatakrishnan and S. K. Tiwari, Magnetic tension of sunspot fine structures, Astronomy and Astrophysics, 516, L5 (2010)
  12. N. Gopalswamy, S.S. Hasan and Ambasta, A., Heliophysical processes, Astrophysics and Space Science Proceedings, Eds. Gopalswamy N., Hasan S.S, and Ambastha, A., Springer, (2010)
  13. Maurya Ram Ajor and Ambastha, A, Magnetic and Velocity Field Changes Related to the Solar Flares of 28 and 29 October 2003; Magnetic Coupling between the Interior and Atmosphere of the Sun, Eds.S.S. Hasan and R.J. Rutten, Astrophysics and Space Science Proceedings, Springer, pp. 517-517, (2010)
  14. Maurya Ram Ajor and Ambastha, A, 3-D Flows in Flaring and Dormant Active Region; Magnetic Coupling between the Interior and Atmosphere of the Sun, Eds.S.S. Hasan and R.J. Rutten, Astrophysics and Space Science Proceedings, Springer, pp. 516-516, (2010)
  15. Ambastha, A., Solar Interior; Heliophysical Processes, Astrophysics and Space Science Proceedings, Eds. opalswamy N., Hasan S.S. and Ambastha A., Springer, pp 15-34., (2010) 


  1. Sanjiv Kumar Tiwari, P. Venkatakrishnan, and K. Sankarasubramanian, Global twist of sunspot magnetic fields obtained from high resolution vector magnetograms,  The Astrophysical Journal Letters, (2009)
  2. Nandita Srivastava, Shibu K. Mathew, R. E. Louis, and T. Wiegelmann, Source region of the 18 November 2003 Coronal Mass Ejection that led to the strongest magnetic storm of Cycle 23, J. Geophysical Res., 114, A03107, (2009)
  3. Shibu K. Mathew, V. Zakharov, and S. K. Solanki, Stray light correction and contrast analysis of Hinode broad-band images, Astronomy & Astrophysics Lett., 501, L19, (2009)
  4. Sanjiv Kumar Tiwari, P. Venkatakrishnan, Sanjay Gosain, and Jayant Joshi, Effect of polarimetric noise on the estimation of twist and magnetic energy of force-free fields, The Astrophysical Journal , 700, 199, (2009)
  5. Ram Ajor Maurya, and Ashok Ambastha, Transient magnetic and Doppler features related to the white-light flares in NOAA 10486, Solar Physics, 258, 31, (2009)
  6. Louis, Rohan E., Bellot Rubio, Luis R., Mathew, Shibu K., Venkatakrishnan, P., Supersonic Downflows in a Sunspot Light Bridge, The Astrophysical Journal Letters, 704, 29, (2009)
  7. Bhuwan Joshi, Astrid Veronig, K. S. Cho, S. C. Bong, B. V. Somov, Y. J. Moon, J. Lee, P. K. Manoharan and Y. H. Kim, Magnetic reconnection during the two phase evolution of a solar eruptive flare, The Astrophysical Journal, vol. 706, 1438, (2009)
  8. K. S. Cho, J. Lee, S. C. Bong, Y. H. Kim, Bhuwan Joshi and Y. D. Park, A coronal mass ejection and Hard X-ray emission associated with the Kink InstabilityThe Astrophysical Journal, vol. 703, 1, (2009)


  1. P. Venkatakrishnan, Brajesh Kumar and Wahab Uddin, Co-spatial evolution of photospheric Doppler enhancements and H-alpha flare ribbons observed during the solar flare of 2003 October 28, Mon. Not. R. Astron. Soc. Lett, 387, L69, (2008)
  2. Louis, Rohan E., Bayanna, A. Raja, Mathew, Shibu K., Venkatakrishnan, P., Dynamics of Sunspot Light Bridges as Revealed by High-Resolution Images from Hinode, Solar Physics, 252, 43, (2008)


  1. Ashok Ambastha, Evolution of magnetic and velocity fields in super-active region NOAA 10486 and the large flare of October 28, 2003, Sun and Geosphere, 2(1), 13, (2007)
  2. Brajesh Kumar, P. Venkatakrishnan, A. Raja Bayanna and K. Venugopalan, Site characterization using solar H-alpha images, Solar Physics, 241, 427, (2007)
  3. Shibu K. Mathew, V. Martinez Pillet, S. K. Solanki and N. A. Krikova, Properties of sunspots in cycle 23. I. Dependence of brightness on sunspot size and cycle phase, Astron. Astrophys., 465, 291, (2007)
  4. R. Sridharan, A. Raja Bayanna, Rohan E. Louis, Brajesh Kumar, Shibu K. Mathew and P. Venkatakrishnan, An Image Stabilization System for solar observations, Proc. SPIE, 6689, 6689Z, (2007)


  1. Ashok Ambastha and H. M. Antia, Possibility of excitation of low-l p-modes by energetic solar transients, Solar Physics, 238, 219, (2006)
  2. Brajesh Kumar and B. Ravindra, Analysis of enhanced velocity signals observed during solar flares, J. Astrophys. Astron., 27, 425, (2006)
  3. Ashok Ambastha, B.Ravindra and Sanjay Gosain, H-alpha Observations of 08 June 2004 Venus Transit, Solar Physics, 233, 171, (2006)
  4. Ashok Ambastha, Photospheric, Chromospheric and Helioseismic Signatures of A Large Flare in Super-Active Region NOAA 10486, J. Astrophys. Astron., 27, 255, (2006)


  1. Nandita Srivastava, Predicting the Occurrence of Super-Storms, Annales Geophysicae, 23, 2989, (2005)
  2. Nandita Srivastava, A Logistic Regression Model for Predicting the Occurrence of Intense Geomagnetic Storms, Annales Geophysicae, 23, 2969, (2005)
  3. Sanjay Gosain, P. Venkatakrishnan, and K.Venugopalan, Design of Instrumental Control Software for Solar Vector Magnetograph at Udaipur Solar Observatory, Experimental Astronomy, 18, 31, (2005)
  4. Sudhir Kumar Gupta, Shibu K. Mathew and P. Venkatakrishnan, Development of Solar Scintillometer, J. Astrophys. Astron., 27, 315, (2005)
  5. P.Venkatakrishnan, R. Sridharan, and Sudhir. Kumar Gupta, Imaging with insolated mirrors, Bull. Astr. Soc. India., 33, 265, (2005)


  1. Nandita Srivastava and P. Venkatakrishnan, Solar and interplanetary sources of major geomagnetic storms during 1996-2002, Journal of Geophys. Res., 109, A10, A10103, (2004)
  2. B. Ravindra, P. Venkatakrishnan and Brajesh Kumar, The pattern of moving magnetic inhomogenties in and around sunspots, Solar Physics, 225, 47, (2004)
  3. R. Sridharan, Nirvikar Dashora and P. Venkatakrishnan, Estimation of Fried's parameter from long-exposure solar images, Solar Physics, 222, 35, (2004)


  1. A. Ambastha, S. Basu and H. M. Antia, Flare induced excitation of solar p-modes, Solar Physics, 218, 151, (2003)
  2. Debi Prasad Choudhary and Sanjay Gosain, Comparative study of LiNbO3 and servo controlled air gap Fabry-Perot etalons for solar application, Experimental Astronomy, 13, 153-158, (2003)
  3. Sanjay Gosain and Debi Prasad Choudhary, Simultaneous Stokes-V diagnostic of a sunspot using Mgb and Fe I lines, Solar Physics, 217, 119-132, (2003)
  4. B. Ravindra and P. Venkatakrishnan, On the correlation between the Helium II 304 network brightening and the photospheric magnetic field, Solar Physics, 214, 267, (2003)
  5. B. Ravindra and P. Venkatakrishnan, Structure and evolution of the transition region network observed in the He II 304, Solar Physics, 215, 239, (2003)
  6. S.C. Tripathy, Solar cycle changes in GONG and MDI data 1995-2002, Bull. Astron. Soc. India, 31, 153-158, (2003)
  7. P. Venkatakrishnan, and B. Ravindra, Relationship between CME velocity and active region magnetic energy, Geophys. Res. Lett., 30, 2181, (2003)