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Browsing by Author "Zaqarashvili, T. V."

Browsing by Author "Zaqarashvili, T. V."

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  • Network loop oscillations with EIS/Hinode 
    Srivastava, A. K.; Kuridze, D.; Zaqarashvili, T. V.; Dwivedi, B. N.; Rani, B. (2010)
    We analyze a time sequence of He II 256.32 Å images obtained with EIS/Hinode, sampling a small magnetic loop in magnetic network. Wavelet analysis indicates 11-min periodicity close to the loop apex. We interpret this ...
  • Numerical simulations of solar macrospicules 
    Murawski, K.; Srivastava, A. K.; Zaqarashvili, T. V. (EDP Sciences, 2011-11-04)
    We consider a localized pulse in the component of velocity, parallel to the ambient magnetic field lines, that is initially launched in the solar chromosphere. We aim to generalize our recent numerical model of spicule ...
  • Observation of Kink Instability as Driver of Recurrent Flares in AR 10960 
    Srivastava, A. K.; Kumar, Pankaj; Zaqarashvili, T. V.; Filippov, B. P.; Uddin, W. (Adv. Geo., 2011)
    We study the active region NOAA 10960, which produces two flare events (B5.0, M8.9) on 04 June 2007. We find the observational signature of right handed helical twists in the loop system associated with this active region. ...
  • Observation of Kink Instability during Small B5.0 Solar Flare on 2007 June 4 
    Srivastava, A. K.; Zaqarashvili, T. V.; Kumar, P.; Khodachenko, M. L. (2010-05-20)
    Using multi-wavelength observations of SOHO/MDI, SOT–Hinode/blue-continuum (4504 Å), G band (4305 Å), Ca ii H (3968 Å), and TRACE 171 Å, we present the observational signature of a highly twisted magnetic loop in AR 10960 ...
  • Observation of multiple sausage oscillations in cool post-flare loop 
    Srivastava, A. K.; Zaqarashvili, T. V.; Uddin, W.; Dwivedi, B. N.; Kumar, P. (2008)
    Using simultaneous high spatial (1.3 arcsec) and temporal (5 and 10 s) resolution Hα observations from the 15 cm Solar Tower Telescope at Aryabhatta Research Institute of Observational Sciences (ARIES), we study the ...

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