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Browsing IIAP Publications by Issue Date

Browsing IIAP Publications by Issue Date

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  • Velocity Oscillations in the Solar Atmosphere 
    Sivaraman, K. R (Indian Institute of Astrophysics, Kodaikanal Observatory, Kodaikanal, 1972)
  • Solar Prominences in 1970 
    Bappu, M. K. V (Royal Astronomical Society, 1972-03)
  • Equatorial sporadic e and cross-field instability 
    Rastogi, R. G (Indian Academy of Sciences, 1972-05)
    The occurrence of sporadic E at an equatorial station during magnetically quiet daytime conditions corresponds almost exactly to the time during which the horizontal component of the earth’s magnetic field is above the ...
  • The frequency drift and time splitting of decameter solar radio bursts 
    Sastry, Ch. V (Gordon and Breach, Science Publishers Ltd., 1972-05)
    The frequency drift and time splitting of solar radio bursts are observed with a multi-channel radiometer and a polarimeter at frequencies around 25 MHz. It is found that a majority of noise storm bursts have drift ...
  • Velocity Oscillations in the Solar Atmosphere 
    Bhattacharyya, J. C (Solar Physics, Vol. 24, No. 2, pp. 274 - 287, 1972-06)
    From a series of long duration continuous Doppler records of selected spectral lines, characteristics of solar velocity oscillations have been studied. Statistical distribution of the durations of the bursts of oscillations ...
  • Photoelectric and Spectrographic Studies of Nova Delphini (1967) 
    Doss, A. T; Bhatnagar, A; Natarajan, V (Kodaikanal Observatory, 1972-07)
    The measurement and analysis of the spectra of Nova Delphini (1967) obtained at Kodaikanal is presented. An estimate of the photospheric temperature of the nuclear star of the nova is also made
  • Optical Astronomy in India - prospects of the next decade 
    Bappu, M. K. V (Indian Academy of Sciences, 1972-12)
  • Optical astronomy in India - prospects of the next decade 
    Bappu, M. K. V (Indian Academy of Sciences, 1972-12)
  • The absolute magnitude of gamma Velorum 
    Rajamohan, R (The Observatory, 1972-12)
  • Solar Prominences in 1971 
    Bappu, M. K. V (Royal Astronomical Society, 1972-12)
  • The spectra of Wolf-Rayet stars at high dispersion 
    Bappu, M. K. V (D. Reidel Publishing, 1973)
  • On the K-line width-absolute magnitude relation 
    Bappu, M. K. V (D. Reidel Publishing, 1973)
    Bright fine mottles seen on the solar disk are identified as the agency that locates the Sun on the K-line width-absolute magnitude relation of Wilson and Bappu. The contribution of the supergranular network emission and ...
  • Photometry of the solar corona of March 7, 1970 
    Bappu, M. K. V; Bhattacharyya, J. C; Sivaraman, K. R (Indian Academy of Sciences, 1973)
    Isophotes obtained by equidensitometry techniques from four exposures of the March 7, 1970 corona are used for derivation of intensity distributions along the equator, poles, streamers and dark ' gaps ' in the visible ...
  • The effect of polar magnetic sub-storms on the equatorial sporadic E 
    Rastogi, R. G (Indian Academy of Sciences, 1973)
    It is known that equatorial sporadic E disappears at night when dynamo field is east to west. During some DP/sub2 type magnetic sub-storms, which cause a depression of the geomagnetic horizontal field at the equator, the ...
  • The spectrum of gamma velorum 
    Rajamohan, R (Centre of Advanced Study in Astronomy, Osmania University, 1973)
    From a measurement of the equivalent width of H alpha in the star gamma 1 Velorum, it is found that My (gamma1 Vel)=-3.1. Assummg gamma 1 and 2 Velorum are at the same distance, a distance modulus of 7.4 magnitudes for ...
  • Spectroscopy of Scorpio-Centaurus association 
    Rajamohan, R (Centre of Advanced Study in Astronomy, Osmania University, 1973)
    Rotational velocities and intensities of hydrogen and helium lines for over 40 members of the Scorpio Centaurus association are presented. From the measured equivalent width of H alpha and H delta some evidence is found ...
  • Spectroscopy of Scorpi-Centaurus association 
    Rajamohan, R (Centre of Advanced Study in Astronomy,Osmania University, 1973)
    Rotational velocities and intensities of hydrogen and helium lines for over 40 members of the Scorpio Centaurus association are presented. From the measured equivalent width of Hr and Hd some evidence is found for the ...
  • Wolf-Rayet and High-Temperature Stars 
    Bappu, M. K. V (editor); Sahade, J (editor) (D. Reidel Publishing Company, 1973)
    We have in this volume, compiled a connected account of the proceedings of the Symposium on Wolf-Rayet and High-Temperature Stars held at Buenos Aires. The Organizing Committee had assigned broad areas of topical interest ...
  • Observations on the Time and Frequency Structure of Solar Decameter Radio Bursts 
    Sastry, Ch. V (D. Reidel Publishing Co., 1973-01)
    Solar radio bursts were observed with a 4-channel radiometer and polarization analyser at wavelenghts around 12 m. The time and frequency resolutions were 10 ms and 100 kHz respectively. Observations on the duration, time ...
  • A detailed study of the geomagnetic storm of 8-10 March 1970 
    Balakrishnan, T. K; Varadarajan, R; Singh, S. B; Karunakaran, D; Aleem, P. S. M (National Institute of Science Communication And Information Resources, 1973-03)
    A comprehensive study of the geomagnetic oscillations during the storm of 8 – 10 March 1970 is made using data obtained from equatorial stations. The oscillation characteristics during the three main phases of the storm ...

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