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Browsing by Author "Gaur, V. P"

Browsing by Author "Gaur, V. P"

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  • Can HeH(+) molecule be present in solar photosphere 
    Gaur, V. P; Joshi, G. C; Pande, M. C (Astronomical Society of India, 1992)
    The equivalent widths of the P and R branch lines of the fundamental vibration-rotation band arising from the ground state of HeH(+) have been calculated in a chosen photospheric model. The resulting equivalent widths ...
  • CCD observations of eruptive prominence of March 19, 1994 
    Uddin, W; Gaur, V. P; Pande, M. C (Astronomical Society of India, 1998)
    The observations of a limb prominence (N 26; E 90) were carried out with the help of a Peltier cooled CCD system. In the beginning the prominence was observed as quiescent prominence with compact helical structure. Rise, ...
  • CCD observations of eruptive prominence of March 19, 1994 
    Uddin, W; Gaur, V. P; Pande, M. C (Astronomical Society of India, 1998)
  • CCD Observations of the Total Solar Eclipse of October 24, 1995 
    Verma, V. K; Wahab Uddin; Gaur, V. P; Joshi, G. C; Bondal, K. R (Indian Institute of Astrophysics, Bangalore, 1997)
    The observations of the solar corona during the Total Solar Eclipse of October 24, 1995 were attempted in white light and in narrow band filters with peak wavelenghts centered at 5303 Armstrong (FeXIV) and at 6474 Armstrong ...
  • Centre to Limb Variation of Rotational Temperature of the CH Molecules in the Solar Photosphere 
    Pande, M. C; Gaur, V. P; Bondal, K. R; Dubey, R. C (Astronomical Society of India, 1980-03)
    Spectrophotoelectric observations of the CH lines have been presented to determine the centre-to-limb behaviour of rotational temperatures for the (0-0) and (1-1) bands of the electronic transition A(power 2 delta) - X ...
  • Evolution of the helical prominence of December 15, 1992 
    Uddin, W; Gaur, V. P; Pande, M. C (Astronomical Society of India, 1995)
    Following Vrsnak (1990), the observations of an eruptive prominence are analysed. Time evolution of height and velocity of the ascending prominence are measured. The prominence manifested helical structure and many knots. ...
  • Ionized molecules in facula models 
    Tripathi, B. M; Gaur, V. P; Pande, M. C (Astronomical Society of India, 1981-09)
    Equivalent widths for the lines of ionized molecules AlH+, CH+, CN+ CO+, N2+, NH+, OH+ and SiH+ have been calculated in five facular and two photospheric models. The calculations suggest that CH+ should show up in facular ...
  • 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 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 ...
  • Proposed 60-cm multichannel Solar Vacuum Telescope of UPSO, Naini Tal 
    Verma, V. K; Uddin, W; Gaur, V. P (Astronomical Society of India, 1998)
  • Solar observational programs and facilities at UPSO, Naini Tal 
    Gaur, V. P; Verma, V. K; Uddin, W (Astronomical Socity of India, 1998)
    We present here the overview of the solar facilities at the U.P. State Observatory, Naini Tal, which have been developed over years for the observations of solar activity phenomena. The various backend instruments and the ...
  • Study of a quiescent prominence 
    Joshi, A; Gaur, V. P; Pande, M. C (Astronomical Society of India, 1995)
    The evolution of a quiescent prominence (QP) seen on the NW solar limb from 11 to 13 June 1991 has been studied. The observations of the main-phase activity of the QP on 12 June 1991 are also discussed.
  • 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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