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Browsing by Author "Joshi, G. C"

Browsing by Author "Joshi, G. C"

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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 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 ...
  • CCD photometry of the Markarian galaxy Mrk 1043 
    Joshi, S. C; Rautela, B. S; Joshi, G. C; Srivastava, J. B; Joshi, U. C (Astronomical Society of India, 1998)
  • Centre-to-limb variation of CH line profile parameters 
    Punetha, L. M; Joshi, G. C (Astronomical Society of India, 1984-09)
    Four CH line profiles at mu = 1.0 and 0.2 were Fourier transformed. They show (i) turbulent velocity Sigma/subt/ = 4.0 km s/sup-1/, and (ii) an increase in the Doppler width parameter Delta lamda/subD/ by a factor of 1.03 ...
  • CN and C2 in Hyakutake (C/1996 B2) 
    Rautela, B. S; Joshi, G. C; Srivastava, J. B (Astronomical Society of India, 1998)
  • Doppler width of CN lines in the Sun 
    Punetha, L. M; Joshi, G. C (Astronomical Society of India, 1984-12)
    The Doppler widths of 0-1, 1-2 and 2-3 vibrational bands of the violet system of CN molecule in the solar atmosphere increase linearly with equivalent width upto approximately equal to 20 mA
  • 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.
  • Model dependence of the rotational temperature of SiO in sunspots 
    Punetha, L. M; Joshi, G. C (Astronomical Society of India, 1984-09)
    Centre-to-limb variation of the rotational temperature of the fundamental band of SiO in different sunspot models has been calculated. The possibility of using these calculations to pick up the true model on the basis of ...
  • Mulliken Bands in the Solar Spectrum 
    Sinha, K; Joshi, G. C (Astronomical Society of India, 1976-12)
  • 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 periodicity of solar great hard X-ray bursts, energic solar radio bursts and sunspot data 
    Verma, V. K; Joshi, G. C (Indian Institute of Astrophysics, Bangalore, 1988)
    In the last solar maximum period (cycle 21) the 152-158 day periodicity was found in the occurrence rate of solar flares through solar gamma ray, microwave, soft X-ray, hard X-ray and H-alpha flares. In the present, brief ...
  • SH on the Sun 
    Sinha, K; Joshi, G. C; Pande, M. C (Astronomical Society of India, 1976-12)
  • Spectrophotometric observations of comet Hale Bopp (C/1995 O1) 
    Rautela, B. S; Joshi, G. C; Srivastava, J. B (Astronomical Society of India, 2000)
    Haser Model production rates of CN and C2 in the coma of the comet Hale-Bopp (C/1995 O1) have been obtained. Molecular production rate, size of the nucleus and continuum flux at 484.0 nm have further been analysed to get ...
  • Sulphur Molecules on the Sun 
    Sinha, K; Joshi, G. C; Pande, M. C (Astronomical Society of India, 1977-06)
  • Sunspot continuum from 1 to 10 mum and the umbral temperature models 
    Punetha, L. M; Joshi, G. C (Astronomical Society of India, 1984-09)
    Infrared flux in Zwaan`s (1974) and Boyer`s (1980) sunspot models has been calculated in the wavelength range 1 to 10 mu m, taking into account the molecular line haze opacity (Joshi et al. 1979). The calculations are ...
  • 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 ...
  • Vibration-rotation bands of SiH and MgH in sunspot spectra 
    Sinha, K; Joshi, G. C (Astronomical Society of India, 1982-12)
    We have calculated the equivalent widths of the vibration-rotation bands of SiH and MgH molecules for a possible detection in the sunspot spectrum. Five different models were utilized and the results obtained with and ...

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