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Browsing by Author "Pande, M. C."

Browsing by Author "Pande, M. C."

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  • Ionised molecules in BCA photospheric model 
    Pande, M. C.; Gaur, V. P. (1972)
    The dissociation equilibrium of ionized diatomic molecular species CO⁺, N O⁺, OH⁺, O₂⁺, N₂⁺, H₂⁺ in BCA photospheric model is considered. The abundances of these species are in the order H₂⁺, CO⁺, OH⁺, NO⁺, O₂⁺ and N₂⁺. ...
  • Ionized Molecules in facula models 
    Tripathi, B. M.; Gaur, V. P.; Pande, M. C. (1981)
    Equivalent widths for the lines of ionized molecules A1H⁺, CH⁺, CN⁺, CO⁺, MgH⁺, N2⁺, NH⁺, OH⁺ and SiH⁺ have been calculated in five facular and two photospheric models. The calculations suggest that CH⁺ should show up in ...
  • Irrotational motion in quiescent prominences 
    Pande, M. C.; Bondal, K. R. (1991)
    On the basis of Kippenhahn and Schluter's magnetohydrostatic model of a quiescent prominence, an attempt has been made to study the effect of irrotational motion existing in the prominences on the magnetic field pattern ...
  • Isotopic lines of SiO in sunspots 
    Pande, M. C.; Joshi, G. C. (1978)
    As the isotopic shift for the vibration rotation band is generally much larger than the isotopic shift for the corresponding electronic transitions and thus facilitating separation of isotopic lines, the vibration rotation ...
  • Longitudinal distribution of the hard X-ray bursts on the sun 
    Verma, V. K.; Pande, M. C. (1985)
    The analysis of 315 hard X-ray bursts (HXR) producing solar flares observed by Hinotori satellite shows that the HXR bursts occur most prominently at 110°, 140°, 290° and 320° longitude, respectively. These longitudes are ...
  • Molecular abundances in sunspots 
    Gaur, V. P.; Pande, M. C.; Tripathi, B. M. (1973)
    The results of the dissociation equilibrium calculations for Zwaan’s sunspot model are given. It appears that many di-and tri-atomic molecules form in sufficient abundances in the spots. It is suggested that for assessing ...
  • Molecular line haze opacity in sunspots 
    Gaur, V. P.; Pande, M. C.; Sah, M. (1979)
    It has been shaown that bound-bound opacity due to electronic transitions of molecules CN, CaH, MgH and TiO explains, in first approximation, the line haze opacity postulated by Zwaan (1974) for the region 0.5 µm to 0.9 ...
  • Molecules in the Solar Photosphere 
    Pande, M. C.; Gaur, V. P.; Tripathi, B. M. (2015-08-19)
    A consideration of the dissociation equilibrium of diatomic molecules in the Utrecht Reference Photosphere leads us to conclude that SH, SiO, CS, HF and HCl may show up in enough concentrations in the solar atmosphere. The ...
  • Molecules in eta aquilae 
    Pande, M. C.; Joshi, G. C.; Tripathi, B. M.; Gaur, V. P. (1971)
    The total numbers Iφ(AB) of a given molecule AB in a column extending between τ=0 to τ=3.00 have been calculated for various phases ɸ of light variations in η Aql for the molecules CO, CN, C ₂ , OH, NH and CH. It is found ...
  • Molecules in white dwarfs 
    Gaur, V. P.; Tripathi, B. M.; Joshi, G. C.; Pande, M. C. (1988)
    Molecular dissociation equilibrium calculations were done for the model atmospheres of DA and non-DA white dwarfs. Our calculations show that He₂⁺ and HeH⁺ appears as most abundant molecules in the atmospheres of non-DA ...
  • The nature of velocity fields in quiescent prominences 
    Bondal, K. R.; Pande, M. C. (1991)
    It is shown that for certain definite conditions of symmetry imposed on the permitting magnetic field geometry for an isothermal case in Kippenhahn and Schluter's (1957) model of a quiescent prominence, any irrotational ...
  • A note on the effect of scattered light on the facula-to-photosphere contrast 
    Pande, M. C.; Tripathi, B. M.; Gaur, V. P. (1971)
    The measured facula-to-photosphere contrast in the continuum radiation corrected for the scattered light should yield a hotter average facula model than the models derived without such a correction.
  • A note on the period of EH Librae 
    Sanwal, N. B.**********; Pande, M. C. (1961-10)
  • A note on the rotational motion in quiescent prominences 
    Pande, M. C.; Bondal, K. R. (1994)
    Following an earlier paper (Pande & Bondal 1991) we have, on the basis of Kippenhahn and Schluter's magnetohydrostatic model of a quiscent prominence, attempted to study the effects of a rotational velocity field in the ...
  • Observations of the occultation of BD -5 5863 by Pallas 
    Sinvhal, S. D.; Sanwal, N. B.; Pande, M. C. (1962)
  • Observations of total solar eclipse of February 16, 1980 
    Gaur, V. P.; Bondal, K. R.; Sinha, K.; Joshi, G. C.; Pande, M. C. (1980)
    We have successfully photographed flash spectrum sequence just before and just after the totality. About 25 frames on each occurrence of flash were registered.
  • On diatomic molecules in facula models 
    Tripathi, B. M.; Pande, M. C. (1973)
    Results of the dissociation equilibrium calculations in thre facula models indicate that more molecules form in the 7B2J Chapman model. Equivalent width calculations in 7B2J model show that the CO⁺ lines of (0-3) band of ...
  • On the behaviour of some visible and infrared atomic hydrogen lines in facular models 
    Bondal, K. R.; Gaur, V. P.; Pande, M. C. (1986)
    The behaviour 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 disc centre. These profiles have been compared amongst ...
  • On the gamma system of nitric oxide in sunspots 
    Joshi, G. C.; Pande, M. C.; Shukla, D. S. (1978)
    With the aim of investigating the resonance system of NO,equivalent width calculation have been made for the 213.575nm,Q1(31.5)line of the 1-0 band of y-system of NO for the photospheric HSRA model,and for the line ...
  • On the infrared opacity of sunspots 
    Joshi, G. C.; Punetha, L. M.; Pande, M. C. (1979)
    In the umbral atmosphere the depth dependence of the opacity due to the vibration rotation bands of various abundant molecules in the wavelength region 1µm to 10µm has been calculated. In the higher layers of the umbral ...

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