IIA Institutional Repository

Browsing by Author "Rausaria, R. R"

Browsing by Author "Rausaria, R. R"

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  • Effects of magnetic shear, spot, and plage rotation on prominence evolution 
    Rausaria, R. R; Gupta, S. S; Selvendran, R; Raman, K. S; Singh, J (Kluwer Academic Publishers, 1993-08)
    We have studied the evolution of two dark H-alpha filaments as prominences during their disk passage from February 12 to February 19, 1992 and from March 6 to March 17, 1992, using Kodaikanal Observatory H-alpha and Ca II ...
  • Hard X-ray characteristics of solar flares using electron Monte-Carlo calculations and beamed thick target model 
    Rausaria, R. R (Springer Netherlands, 1992-08)
    The experimental results of X-ray bursts with spectral characteristics, spatial distribution, fast time variations, polarization, and directivity measurements carried out with Intercosmos, PVO/ISEE-3 spacecrafts, imaging ...
  • Magnetic shear in flaring regions. I - Quantitative evaluation of the change in shear 
    Sivaraman, K. R; Rausaria, R. R; Aleem, S. M (Springer Netherlands, 1992-04)
    We have evaluated the shear angle of the neutral line of the non-potential magnetic field for one or two days prior to and after the flare event for 10 cases. We have used the Hagr filament positions to evaluate the shear ...
  • On the role of reverse current on the hard X-ray production in solar flares and time-lags between high- and low-energy photons 
    Bakaya, R; Chasti, S. A; Rausaria, R. R (Springer Netherlands, 1992-09)
    The evolution of energy and angular distributions of electrons has been studied accounting for the reverse current effect by combining analytically treated small angle multiple scatterings with large angle Monte-Carlo ...
  • On the triggering of a spotless double-ribbon flare 
    Rausaria, R. R; Aleem, S. M; Sundararaman, K (Springer Netherlands, 1992-11)
    We have studied the evolution of the double-ribbon, spotless flare of 21 February, 1992, using Kodaikanal Hagr and Kf1 observations. The analysis of the data shows that the Hagr filament underwent a large change in shear ...
  • Solar X-ray bursts 
    Rausaria, R. R (Indian Institute of Astrophysics, Bangalore, 1988)
    The experimental results of X-ray bursts about spectral characteristics, spatial distribution and directivity measurements carried out with PVO/ISEE-3 spacecraft imaging instruments of HXIS and Hard X-ray burst spectrometers ...
  • The variation of filament direction in a flaring region 
    Rausaria, R. R; Raman, K. S; Aleem, P. S. M; Singh, J (Kluwer Academic Publishers, 1993-07)
    We have analyzed the variations in shear angle over a time interval of 30 s during a flare on June 11, 1991, using Kodaikanal Observatory spectroheliogram and photoheliogram data, and assuming H-alpha filaments are a proxy ...

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