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Browsing by Author "Bondal, K. R"

Browsing by Author "Bondal, K. R"

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  • A note on the rotational motion in quiescent prominences 
    Pande, M. C; Bondal, K. R (Astronomical Society of India, 1995)
    Following an earlier paper (Pande & Bondal 1991) we have, on the basis of Kippenhahn and Schluter's magnetohydrostatic model of a quiescent prominence, attempted to study the effect of a rotational velocity field in the ...
  • Observations of Total Solar Eclipse of February 16, 1980 
    Gaur, V. P; Bondal, K. R; Sinha, K; Joshi, G. C; Pande, M. C (Tata Institute of Fundamental Research, Bombay, 1980-06)
    The instrumental setup and preliminary results of the experiments performed during the eclipse are briefly reported.
  • On some visible and infrared atomic hydrogen lines in three photospheric models 
    Bondal, K. R; Gaur, V. P (Astronomical Society of Indian, 1986-06)
    The ability of the photosphere models of Holweger and Mueller (1974) (HM) and Vernazza et al. (1976 and 1981) (VAL) to predict the profiles in the wings of the Balmer, Paschen, and Brackett lines in the disk-center solar ...
  • On the arch prominence of 1980 November 22 
    Pant, P; Bondal, K. R (Astronomical Society of India, 1983-12)
    Photographic H-alpha observations of an arch prominence, its eruption and subsequent interaction with a neighbouring prominence, taken 1980 November 22 are described. The observations were obtained with a 0.7 A/sup0/ ...
  • On the behaviour of some visible and infrared atomic hydrogen lines in facular models 
    Bondal, K. R; Gaur, V. P; Pande, M. C (Astronomical Society of Indian, 1986-12)
    The behavior of line profiles in the wings of the Balmer, Paschen, and Brackett lines (alpha to delta) has been theoretically investigated in five facular models at disk center. These profiles have been compared amongst ...
  • On the centre-to-limb variation of some visible and infrared atomic hydrogen lines in three facular models 
    Bondal, K. R; Gaur, V. P (Astronomical Society of Indian, 1987)
    The centre-to-limb behaviour of the residual intensities in the line wings of the Balmer, Paschen and Brackett series lines (alpha to delta) in three facular models at four wing points has been investigated with a view to ...
  • On the Solar Limb Darkening in the Wings of Some Atomic Hydrogen Lines 
    Bondal, K. R; Gaur, V. P; Pande, M. C (Astronomical Society of Indian, 1987-03)
    The centre-to-limb behaviour of the first four lines of the Balmer, Paschen, and Brackett series of atomic hydrogen at selected distances from the line centre, i.e. at delta lamda = 5, 10, 20 and 30 A has been theoretically ...
  • On the unusual surge of 1991 November 16 
    Bondal, K. R; Gaur, V. P; Joshi, A; Uddin, W; Pande, M. C (Astronomical Society of India, 1994)
    An unusually 'long' surge of 'short' duration occurred in the NW region of the sun's limb on 1991 November 16, around 04 15 UT. Time-lapse photographic observations employing a Halle H-alpha filter having a 0.5/0.7 A ...
  • The peculiar solar flare of 1981 May 13 
    Bondal, K. R; Pant, P; Pande, M. C; Ballabh, G. M (Astronomical Society of India, 1982-06)
    Time-phase photographic observations with 0.7 Armstrong passband H-alpha filter and the morphological-cum-temporal behaviour of a large double solar flare which occurred on 1981 May 13 have been described. The two strands, ...
  • Radio Pulsations associated with the Solar flare of 1982 April 14 
    Pant, P; Bondal, K. R (Astronomical Society of India, 1984-09)
    We report here the H-alpha observations of a large and complicated flare of optical class 2B which occured on 1982 April 14. The flare showed significant activity for several minutes prior to its impulsive phas, as evidenced ...
  • Total solar eclipse observations of 24 October 1995 from Meja Khas, Allahabad 
    Verma, V. K; Uddin, W; Gaur, V. P; Joshi, G. C; Bondal, K. R; Pant, P (Astronomical Society of India, 1996)
    Monochromatic coronal images during the total solar eclipse of 24 October 1995 were successfully obtained in 6374 Amstrong [Fe X]line. The experiment carried out a Meja Khas, Allahabad during the eclipse and the preliminary ...

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