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On the flare induced seismicity in the active region NOAA 10930 and related enhancement of global waves in the sun
Brajesh Kumar, P. Venkatakrishnan, Savita Mathur +2
A major flare (of class X3.4) occurred on 13 December 2006 in the active region NOAA 10930. The energy released during flares is also known to induce acoustic oscillations in the S…
Pre-flare activity and magnetic reconnection during the evolutionary stages of energy release in a solar eruptive flare
Bhuwan Joshi, Astrid M. Veronig, Jeongwoo Lee +3
In this paper, we present a multi-wavelength analysis of an eruptive white-light M3.2 flare which occurred in active region NOAA 10486 on November 1, 2003. Excellent set of high re…
On the Force-Freeness of the Photospheric Sunspot Magnetic Fields as Observed from Hinode (SOT/SP)
Sanjiv Kumar Tiwari
A magnetic field is force-free if there is no interaction between the magnetic field and plasma in surrounding atmosphere i.e., electric currents are aligned with the magnetic fiel…
Evolution of Currents of Opposite Signs in the Flare Productive Solar Active Region NOAA 10930
B. Ravindra, P. Venkatakrishnan, Sanjiv Kumar Tiwari +1
Analysis of a time series of high spatial resolution vector magnetograms of the active region NOAA 10930 available from SOT/SP on-board Hinode revealed that there is a mixture of u…