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Browsing by Author "Pande, M. C"

Browsing by Author "Pande, M. C"

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  • Behaviour of some neutral molecular absorption lines in facula models 
    Tripathi, B. M; Sinha, K; Pande, M. C (Astronomical Society of India, 1982-12)
    The equivalent widths of some selected absorption lines of C2, Ch, MgH, NH, OH and SH molecules in five facula and two photospheric models have been calculated under the assumption of LTE. The calculations reveal that the ...
  • Brackett-gamma line and facula models 
    Tripathi, B. M; Pande, M. C (Astronomical Society of India, 1981-12)
    An attempt has been made to show that the profile of the Brackett-gamma line can distinguish between different facula models. It is suggested that low noise high resolution scans of Brackett lines can help improve the ...
  • 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 ...
  • Carbon monoxide and facula models 
    Tripathi, B. M; Pande, M. C; Sinha, K (Astronomical Society of India, 1982-06)
    Equivalent widths for a new lines of the first overtone band of carbon monoxide have been calculated in the solar infrared spectrum for five facular and two photospheric models. The calculations show a decrease in equilavent ...
  • 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)
  • 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 ...
  • Coronal holes and long-lived unipolar magnetic regions 
    Shelke, R. N; Pande, M. C (Astronomical Society of India, 1984-12)
    Association of coronal holes with long-lived unipolar magnetic regions (LLUMRs) which survived for four solar rotations is examined. It is noticed that every coronal hole fits in well within the LLUMR. The coronal holes ...
  • Double ribbon flare of 1981 October 19 
    Verma, V. K; Pande, M. C (Astronomical Society of India, 1983-03)
    Photographic observations with a 0.7 A passband H-alpha Halle filter and morphological description of the double ribbon flare which occured near Halle plage region 17926 on 1981 October 19 are described. Initially the flare ...
  • Eclipsing binary research at Uttar Pradesh State Observatory 
    Srivastava, J. B; Chaubey, U. S; Pande, M. C (Astronomical Society of India, 1990)
    The results of photometric and spectroscopic studies of binary stars at Uttar Pradesh State Observatory are summarized. The star names, their magnitudes and periods, and their orbital elements are given. Findings on the ...
  • 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. ...
  • Franck-Condon factors for some abundant umbral molecules 
    Joshi, G. C; Joshi, U. C; Punetha, L. M; Pande, M. C (Astronomical Society of India, 1982-06)
    Some of the molecular transitions in UV in sunspots are pointed out and Franck-Condon factors for some of these have been calculated.
  • 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 ...
  • 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 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 recurrence of sudden ionospheric disturbances 
    Shelke, R. N; Pande, M. C (Astronomical Society of India, 1984-09)
  • On the relation between large scale solar magnetic fields and filament positions 
    Shelke, R. N; Pande, M. C (Astronomical Society of India, 1983-12)
    Interrelationships of filament positions and large scale solar magnetic field structures are examined here. The broad neutral bands seem to be suitable locations for the formation and development of filaments. Filaments ...
  • 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 ...

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