Publications of Astronomical Society of India: Recent submissions

  • Ionospheric Effects During February 1980 Solar Eclipse 
    Chandra, H; Deshpande, M. R; Vyas, G. D; Sethia, G; Vats, H. O; Iyer, K. N (Astronomical Society of India, 1980-12)
    Highlights of the ionospheric effects of the total solar eclipse of February 16, 1980 detected by ground-based experiments in India are summarised. Decrease in electron density at various height in ionosphere upto the F2 ...
  • Phase and field Measurements at VLF, LF and HF During the Solar Eclipse of February 16, 1980 -- Preliminary Results 
    Dixit, P. S; Rao, P. K; Bhonsle, R. V; Sethia, G; Deshpande, M. R; Chandra, H (Astronomical Society of India, 1980-12)
    Phase and field measurements at 16kHz (VLF) by monitoring GBR (Rugby, England) and at 10 MHz (HF) ATA (New Delhi) were carried out from Satellite Tracking and Ranging Station (Kavalur) during the solar eclipse of February ...
  • High Resolution Coronal Intensity and Polarization Measurements 
    Streete, John. L; Lacey, Leon. B (Astronomical Society of India, 1980-12)
    The total eclipse of February 16, 1980 was successfully photographed with the High Altitude Observatory's coronal camera from a site in Palem, India. The purpose of the experiment was to obtain, with high spatial resolution, ...
  • Preliminary Report: 1980 Eclipse Coronal Oscillations Experiment 
    Pasachoff, J. M; Landman, Donald. A (Astronomical Society of India, 1980-12)
    We searched for short period (1 second) brightness oscillations in coronal loops during the 1980 total solar eclipse using cooled photomultipliers and digital microprocessor data handling and recording. The experiment was ...
  • Multi-Frequency Observations of Radio Sun During Total Solar Eclipse of February 16, 1980 
    Bhonsle, R. V; Alurkar, S. K; Degaonkar, S. S; Calla, O. P. N; Raju, G; Rana, S. S; Lokanadham, B; Gopal, B. V (Astronomical Society of India, 1980-12)
    Measurements of radio flux of the Sun duirng the total solar eclipse on February 16, 1980 were made from the Japal-Rangapur Observatory near Hyderabad, at radio frequencies of 2.8, 10, 19 and 22.2 GHz. Observations for ...
  • Observations of Coronal Velocity Field, Flash Spectrum and Shadow Bands During Total Solar Eclipse 1980 
    Bhatnagar, A; Jadhav, D. B; Jain, R. M; Shelke, R. N; Purohit, S. P (Astronomical Society of India, 1980-12)
    Observations using a multislit spectrograph at 5303A Fe XIV line were obtained during the 16 February, 1980 total solar eclipse, for velocity field determination in the solar coronal. A colour movie film of the flash ...
  • Eclipse Spectrophotometry of Solar Prominences 
    Landman, Donald. A; Jefferies, John. T; Orrall, Frank. Q (Astronomical Society of India, 1980-12)
    The Institute for Astronomy's Eclipse Spectrograph was used to obrain prominence and coronal spectra throughout the wavelength range from about Lamda Lamda 3500-7000 at the February 16, 1980 total solar eclipse. The ...
  • Antimatter in Cosmic Rays 
    Daniel, R. R; Stephens, S. A (Astronomical Society of India, 1980-06)
    We have briefly reviewed the available information on the antimatter content in the universe deduced from astronomical observations and examined some of the theories relating to symmetric cosmology, in order to understand ...
  • Abundance Patterns in Chemically Peculiar Stars of the Upper Main Sequence 
    Cowley, Charles. R (Astronomical Society of India, 1980-06)
    Abundance patterns in Chemically peculiar (CP) stars are discussed within the context of nuclear and non-nuclear mechanisms for the origin of the anomalies. Some abundance patterns depart significantly from "solar" but ...
  • Intensity Variation of Photons During the Solar Eclipse 
    Chandole, S. V; Shah, S. S (Tata Institute of Fundamental Research, Bombay, 1980-06)
    The study was aimed to determine the variation of intensity of photons from the Sun during solar eclipse at Aurangabad (altitude 586 meters, latitude 19 degree 5' and longitude 95 degree 24'). It was carried out with the ...
  • Coronal Interferogram in 5303A Obtained During Total Solar Eclipse of February 16, 1980 and Coronal Temperatures 
    Chandrasekhar, T; Ashok, N. M; Desai, J. N; Vaidya, D. B; Angreji, P. D (Tata Institute of Fundamental Research, Bombay, 1980-06)
    Coronal interferogram in 5303 Armstrong was obtained during the total solar eclipse of February 16, 1980 using Fabry-Perot etalon. Coronal temperatures determined from the Doppler width of the fringes are reported and ...
  • 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.
  • Observations of Baily's Beads During the Total Solar Eclipse of 1980 February 16 
    Fiala, Alan. D; Dunham, David. W; Dunham, Joan. B (Tata Institute of Fundamental Research, Bombay, 1980-06)
    Precise timings of Baily's beads activity were made from stations in India near the limits of the path of totality. The techniques and planned ues are outlined.
  • Summary of the Czechoslovak Solar Corona Observations 
    Sykora, Julius (Tata Institute of Fundamental Research, Bombay, 1980-06)
  • Satellite Radio Beacon Study of the Ionospheric Variations at Hyderabad during the Total Solar Eclipse of Februrary 16, 1980 
    Tyagi, Tuhi Ram; Singh, Lakha; Vijaykumar, P. N; Somayajulu, Y. V; Lokanadham, B; Yellaiah, G (Tata Institute of Fundamental Research, Bombay, 1980-06)
    Preliminary results of observations, made on the eclipse day (Feb. 16, 1980) at Hyderabad, on the amplitude and phase of 136 MHz transmissions of the geostationary satellite ETS-II are presented by the eclipse. The percentage ...
  • Polarization Study of the Solar Corona Using Double Polarigrpah 
    Raju, A. K (Astronomical Society of India, 1980-06)
    The Double Polarigraph, used in the total solar eclipse of 16th Feb. 1980 to study the Polarization of Corona at two wavelengths, is described briefly. The negatives are being studied and the results will be published in ...
  • Search for Optical Modulation of the Solar Corona During the February 16, 1980 Total Solar Eclipse 
    Seykora, E. J (Tata Institute of Fundamental Research, Bombay, 1980-06)
    The optical modulation and solar scintillations in the frequency range from 24 Hz-15 k Hz and 5-15 MHz were recorded during the February 16, 1980 total solar eclipse. Preliminary results are discussed concerning both the ...
  • Interferometric Eclipse Observations of Coronal Fe XIV Emission 
    Smartt, R. N; Zirker, J. B; Mauter, H. A (Tata Institute of Fundamental Research, Bombay, 1980-06)
    An experiment carried out during the February 16, 1980 total solar eclipse to measure velocities and intensity distributions associated with coronal loops is described. The optical instrumentation used consisted of a 30-cm ...
  • Coronal Emission Line Measurements of the February 16, 1980 Total Solar Eclipse 
    Liebenberg, D. H; Sanders, W. M; Brown, E. A; Murray, H. S; Kennedy, R. N (Tata Institute of Fundamental Research, Bombay, 1980-06)
    We have observed coronal emission line profiles at the February 16, 1980 total solar eclipse from an NC-135 aircraft. Very successful observations of a highly active corona near the peak of the 11 year solar cycle show ...
  • The Kitt Peak Coronal Velocity Experiment 
    Livingston, W; Harvey, J; Doe, L. A; Gillespie, B; Ladd, G (Tata Institute of Fundamental Research, Bombay, 1980-06)
    Multi-slit spectra of (Fe XIV 5303) plus neon comparisons were successfully obtained on February 16, 1980 at the Japal-Rangapur site. The objective is to confirm our previous results of March 1970 and June 1973, viz. that ...

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