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Browsing Kodaikanal Observatory, Kodaikanal by Title

Browsing Kodaikanal Observatory, Kodaikanal by Title

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  • On the resonance lines of thallium and their probable absence in the Sun 
    Narayan, A. L (Government Observatory, Madras, 1932-12-27)
  • Oppositions of Mars in 1954 and 1956 
    Das, A. K (Government Observatory, Madras, 1958-07)
  • Optical Aspects of Solar Activity 
    Bhatnagar, A (Indian Institute of Astrophysics, Bangalore, 1986)
    A review of optical observations of some solar phenomena is presented. From the photospheric observations of the birth, growth and decay of pores, spots and sunspot groups and associated velocity and magnetic field structure ...
  • Optical emission from solar corona 
    Raju, P. K (Indian Institute of Astrophysics, Bangalore, 1988)
    In this article the methods to probe the solar corona are briefly described. The discussion is confined to continuum and the "optical" wavelength region ~ 0.3 mum to 1.1 mum.
  • Optical observations of the Sun 
    Bhatnagar, A (Indian Institute of Astrophysics, Bangalore, 1988)
  • Optical Phase Conjugation in Iodine Solutions 
    Vijaya, R; Murti, Y. V. G. S; Sundararajan, G; Prasada Rao, T. A (Indian Institute of Astrophysics, Bangalore, 1991)
    Results of experimental investigations on the optical phase conjugation in iodine solutions are reported in this paper. Degenerate four wave mixing is performed at two different wavelengths - one within the resonant regime ...
  • Our Present Understanding of Solar Flares 
    Dwivedi, B. N (Indian Institute of Astrophysics, Bangalore, 1986)
    A general discussion of solar flares with emphasis on two-ribbon flares is given. The basic differences between compact (simple-loop) and two-ribbon flares have also been pointed. Skylab observations have been presented ...
  • Oxygen in the Sun's chromosphere 
    Royds, T (Government Observatory, Madras, 1935-08-29)
  • P Cygni type profiles 
    Peraiah, A; Srinivasa Rao, M (Indian Institute of Astrophysics, Bangalore, 1985-11)
    We have presented a series of P Cygni type profiles of special lines computed by employing different velocity laws of expansion in a spherically atmosphere. A comparison has been made with those of Beals classification. ...
  • P.R. Chidambara Ayyar elected as a fellow of the Royal Astronomical Society 
    Royal Astronomical Society (Royal Astronomical Society, 1925-01-09)
    This includes the announcement made in the journal Monthly Notices of Royal Astronomical Society regarding his election as a fellow of the Royal Astronomical Society, a letter proposing his name for the membership and ...
  • The parallax of the Gegenschein 
    Evershed, John (Taylor and Francis, 1899-07)
  • Particle emission from Sun 
    Vahia, M. N (Indian Institute of Astrophysics, Bangalore, 1988)
    Recent results on various aspects of solar energetic particles are reviewed. A possible grain component of the polar particles is discussed in brief. The plasma component namely the solar wind and the solar energetic ...
  • Peculiar abundances in Solar particle emissions 
    Vahia, M. N (Indian Institute of Astrophysics, Bangalore, 1988)
    In this paper we attempt to show that currently available data on solar flare particle abundances allows studies of abundance and enchancement patterns. In particular we show that solar particles originate from regions of ...
  • Photography of Solar Corona Using Indian Air Force Aeroplane 
    Ramani, M; Cowsik, R; Singh, J; Shukla, A. K (Wg. Cdr.); Ravi Shekar (Sqn. Ldr.); Narayana, P. V. S (Fg. Offr); Shaji, P. K (Fg. Offr.); Paul, S. K (Fg. Offr.); Shelkey, S. N (J.W.O); Babu, K. R (J.W.O); Kamble, V. B (Indian Institute of Astrophysics, Bangalore, 1997)
    The teams of the Indian Air Force participated actively in the programme. They made several supersonic flights to follow shadow zone of the moon on earth along the path of totality, thereby extending thte duration of ...
  • Photometric observations of solar corona during total solar eclipse of October 24, 1995 
    Kumar, S. S; Sharma, P; Devgun, C. B (Indian Institute of Astrophysics, Bangalore, 1997)
    Twenty pictures of solar corona were taken on October 24, 1995 from Bhind on the central line of totality, covering a wide range of exposure times a 500mm telephoto lens captured Images on 35mm film duly calibrated. This ...
  • Photometric study of the lines of hydrogen and of calcium in the fraunhofer spectrum at different points of the Sun's disc 
    Royds, T; Narayan, A. L (Government Observatory, Madras, 1936-11-25)
  • Photometry of Solar Corona to Study the Coronal Structures 
    Chakraborty, P; Sankarasubramanian, K; Majumder, S; Rajesh Nayak, K; Sridharan, R; Jana, A. D; Rajalakshmi, G; Suresh, D; Asgekar, A; Geetha, K. P; Rajesh, C. K (Indian Institute of Astrophysics, Bangalore, 1997)
    White light images of the solar corona were taken on KODAK 2415 films using 3-inch (f/11.5) telescopes fitted with SLR cameras. Observations were made from 4 different sites spread over the totality belt by four different ...
  • Photometry of the solar corona during total solar eclipse of October 24, 1995 
    Ananda Rao, B. G; Ashok, N. M; Chandrasekhar, T; Desai, J. N; Nanda Kumar, M. S (Indian Institute of Astrophysics, 1997)
    White light pictures and filter grams in three narrow band interference filters centered on the emission lines In Fe X, Fe XIV and Ca XV have been obtained. We have observed a coronal structure towards the north western ...
  • Photometry of Zeta Aurigae during the 1977 and 1979-80 Eclipses 
    Mohin, S; Raveendran, A. V; Mekkaden, M. V (Indian Institute of Astrophysics, Bangalore, 1980)
    UBV photometry of Zeta Aurigae during the 1977 and 1979-80 eclipses is presented. From an analysis of the available photometry, it is concluded that the long term intrinsic variation in the brightness of the late-type super ...
  • Polarimetry of Supernova SN 1987A - A Dust Shell Model 
    Joshi, U. C; Sen, A. K; Deshpande, M. R; Jain, Rekha (Indian Institute of Astrophysics, 1988)
    Polarimetric measurements of SN1987A in BVR bands were made on March 6 and 7. These observations along with the polarimetric data reported by various other authors within first 30 days of explosion have been discussed. ...

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