All Stories

  1. Magnetic Stress of Active Regions and Speed of Ejections

    Article • Geophysical Research Letters, July 2015, American Geophysical Union (AGU)

    Dr Sanjiv K Tiwari, Professor Parameswaran Venkatakrishnan

  2. TRIGGER MECHANISM OF SOLAR SUBFLARES IN A BRAIDED CORONAL MAGNETIC STRUCTURE

    Article • The Astrophysical Journal Letters, October 2014, Institute of Physics Publishing

    Dr Sanjiv K Tiwari

  3. IMPULSIVE ENERGY RELEASE AND NON-THERMAL EMISSION IN A CONFINED M4.0 FLARE TRIGGERED BY RAPIDLY EVOLVING MAGNETIC STRUCTURES

    Article • The Astrophysical Journal, July 2014, Institute of Physics Publishing

    Dr Sanjiv K Tiwari

  4. Structure of sunspot penumbral filaments: a remarkable uniformity of properties

    Article • Astronomy and Astrophysics, August 2013, EDP Sciences

    Dr Sanjiv K Tiwari

  5. ERRATUM: ‘‘ON THE FORCE-FREE NATURE OF PHOTOSPHERIC SUNSPOT MAGNETIC FIELDS AS OBSERVED FROM HINODE (SOT/SP)'' (2012, ApJ, 744, 65)

    Article • The Astrophysical Journal, October 2012, Institute of Physics Publishing

    Dr Sanjiv K Tiwari

  6. ON THE FORCE-FREE NATURE OF PHOTOSPHERIC SUNSPOT MAGNETIC FIELDS AS OBSERVED FROM HINODE (SOT/SP)

    Article • The Astrophysical Journal, December 2011, Institute of Physics Publishing

    Dr Sanjiv K Tiwari

  7. PRE-FLARE ACTIVITY AND MAGNETIC RECONNECTION DURING THE EVOLUTIONARY STAGES OF ENERGY RELEASE IN A SOLAR ERUPTIVE FLARE

    Article • The Astrophysical Journal, December 2011, Institute of Physics Publishing

    Dr Sanjiv K Tiwari

  8. ON THE FLARE-INDUCED SEISMICITY IN THE ACTIVE REGION NOAA 10930 AND RELATED ENHANCEMENT OF GLOBAL WAVES IN THE SUN

    Article • The Astrophysical Journal, November 2011, Institute of Physics Publishing

    Dr Sanjiv K Tiwari

  9. EVOLUTION OF CURRENTS OF OPPOSITE SIGNS IN THE FLARE-PRODUCTIVE SOLAR ACTIVE REGION NOAA 10930

    Article • The Astrophysical Journal, September 2011, Institute of Physics Publishing

    Dr Sanjiv K Tiwari

  10. EVOLUTION OF MAGNETIC FIELD TWIST AND TILT IN ACTIVE REGION NOAA 10930

    Article • July 2011, World Scientific Pub Co Pte Lt

    Dr Sanjiv K Tiwari

  11. Analysis of peculiar penumbral flows observed in the active region NOAA 10930 during a major solar flare

    Article • Journal of Physics Conference Series, January 2011, Institute of Physics Publishing

    Dr Sanjiv K Tiwari

  12. MAGNETIC NON-POTENTIALITY OF SOLAR ACTIVE REGIONS AND PEAK X-RAY FLUX OF THE ASSOCIATED FLARES

    Article • The Astrophysical Journal, August 2010, Institute of Physics Publishing

    Dr Sanjiv K Tiwari

  13. ON THE ESTIMATE OF MAGNETIC NON-POTENTIALITY OF SUNSPOTS DERIVED USING HINODE SOT/SP OBSERVATIONS: EFFECT OF POLARIMETRIC NOISE

    Article • The Astrophysical Journal, August 2010, Institute of Physics Publishing

    Dr Sanjiv K Tiwari

  14. Helicity of the solar magnetic field

    Article • Proceedings of the International Astronomical Union, August 2010, Cambridge University Press

    Dr Sanjiv K Tiwari

  15. Are the photospheric sunspots magnetically force-free in nature?

    Article • Proceedings of the International Astronomical Union, August 2010, Cambridge University Press

    Dr Sanjiv K Tiwari

  16. Magnetic tension of sunspot fine structures

    Article • Astronomy and Astrophysics, June 2010, EDP Sciences

    Dr Sanjiv K Tiwari

  17. HINODE OBSERVATIONS OF COHERENT LATERAL MOTION OF PENUMBRAL FILAMENTS DURING A X-CLASS FLARE

    Article • The Astrophysical Journal, November 2009, Institute of Physics Publishing

    Dr Sanjiv K Tiwari

  18. ON THE ABSENCE OF PHOTOSPHERIC NET CURRENTS IN VECTOR MAGNETOGRAMS OF SUNSPOTS OBTAINED FROM HINODE (SOLAR OPTICAL TELESCOPE/SPECTRO-POLARIMETER)

    Article • The Astrophysical Journal, November 2009, Institute of Physics Publishing

    Dr Sanjiv K Tiwari

  19. GLOBAL TWIST OF SUNSPOT MAGNETIC FIELDS OBTAINED FROM HIGH-RESOLUTION VECTOR MAGNETOGRAMS

    Article • The Astrophysical Journal, August 2009, Institute of Physics Publishing

    Dr Sanjiv K Tiwari

  20. EFFECT OF POLARIMETRIC NOISE ON THE ESTIMATION OF TWIST AND MAGNETIC ENERGY OF FORCE-FREE FIELDS

    Article • The Astrophysical Journal, July 2009, Institute of Physics Publishing

    Dr Sanjiv K Tiwari

  21. Software for interactively visualizing solar vector magnetograms of udaipur solar observatory

    Article • Journal of Astrophysics and Astronomy, June 2008, Springer Science + Business Media

    Dr Sanjiv K Tiwari

  22. Evolution of Magnetic Helicity in NOAA 10923 Over Three Consecutive Solar Rotations

    Article • Springer Science + Business Media

    Dr Sanjiv K Tiwari