Kodaikanal Observatory, Kodaikanal: Recent submissions

  • Proposed Indian National Programme for the International Heliospheric Study 
    Bhonsle, R. V (Indian Institute of Astrophysics, Bangalore, 1986)
    "Ulysses" is an International Solar Polar Mission (ISPM) to be carried out jointly by European Space Agency (ESA) and NASA. The Ulysses spacecraft will be launched in May 1986 by means of a Space Shuttle. The primary ...
  • Search for Mechanisms of Solar Magnetism 
    Gokhale, M. H (Indian Institute of Astrophysics, Bangalore, 1986)
    Study of 'Solar magnetism' (totality of solar magnetic phenomena on idfferent scales) and its 'mechanisms' (physical processes responsible for the phenomena) is obviously essential for the advancement of solar and ...
  • Solar Convection and Oscillations 
    Chitre, S. M (Indian Institute of Astrophysics, Bangalore, 1986)
    A wide variety of gravity and acoustic wave motions have been detected at the surface of the Sun as Doppler shifts of spectral lines. These velocity field provide a valuable probe for studying the internal solar structure ...
  • A Model of the Generation Mechanism of Type II Solar Radio Bursts 
    Thejappa, G (Indian Institute of Astrophysics, Bangalore, 1986)
    The proposed model for the generation mechanism of type II solar radio bursts is based on the fact that a small fraction of ions is reflected from the shock front and tend to evolve into a 'ring' in the downstream region ...
  • Structure and Dynamics of the Solar Wind 
    Vats, Hari Om (Indian Institute of Astrophysics, Bangalore, 1986)
    Due to high temperature and very small temperature gradient with height, the solar corona is not in hydrostatic equilibrium but is continuously expanding into the inter-planetary space. The expanding coronal plasma is known ...
  • Radio Emission From The Quiet Sun and Active Regions at Decametric Wavelengths 
    Sastry, Ch. V (Indian Institute of Astrophysics, Bangalore, 1986)
    The Continuum emission from the Quiet Sun and active regions is the radiation from the solar atmosphere when there is no transient burst activity. At decametric wavelengths this radiation originates in the outer corona. A ...
  • Coronal Loops 
    Krishan, V (Indian Institute of Astrophysics, Bangalore, 1986)
    The statistical treatment of the magnetohydrodynamically turbulent plasma is used to study the steady state configuration of the coronal loops. The stability of the plasma system is defined in terms of certain invariants ...
  • High Resolution Observations of Solar Radio and X-Ray Bursts and their Imterpretation 
    Degaonkar, S. S (Indian Institute of Astrophysics, Bangalore, 1986)
    High resolution observations in the radio range from the ground and X-rays from satellites during the past few years have provided new insights into the nature of emission processes and energies of solar eruptions. It is ...
  • 3He Rich Solar Flares 
    Ramadurai, S (Indian Institute of Astrophysics, Bangalore, 1986)
    The various observational features of the 3He rich solar flares like their characteristics and association with other phenomena are discussed. It is shown that 3He rich flares split into two distinct groups, if one plots ...
  • 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 ...
  • Measurement of Solar Magnetic Fields 
    Bhattacharyya, J. C; Balasubramaniam, K. S (Indian Institute of Astrophysics, Bangalore, 1986)
    The paper reviews several methods of estimation of solar magnetic fields so far employed. The possibility of measurement of the vector magnetic fields by using two dimensional detector arrays is discussed. A program for ...
  • Solar Optical Observations from Kodaikanal and from Eclipses 
    Singh, J (Indian Institute of Astrophysics, Bangalore, 1986)
    From an analysis of a long series of Calcium K spectroheliograms taken at Kodaikanal, systematic changes in the sizes of supergranule cells have been found. The average cell size changes with the phase of solar cycle, being ...
  • Ca II K Emission from the Solar Chromosphere 
    Sivaraman, K. R (Indian Institute of Astrophysics, Bangalore, 1986)
    The role of the Ca II K line as a reliable diagnostic of the chromospheric activity on the Sun is reviewed. The chromospheric structures seen in this line serve as good indicators of the photospheric magnetic structures ...
  • 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 ...
  • Stone Inscriptions on Eclipses in Karnataka 
    Shylaja, B. S; Murthy, Chidananda. M (Indian Institute of Astrophysics, Bangalore, 1997)
    The solar and lunar eclipses have been documented on stone inscriptions in various parts of Karnataka, from the 9th century onwards. The records testify the knowledge of positional astronomy and also the cultural and ...
  • Effects of Solar Eclipse on Zooplanktomic Diel Periodicity and Primary Productivity in fresh water ponds 
    Mukhopadhyay, S. K; Biswas, S; Chatterjee, A (Indian Institute of Astrophysics, Bangalore, 1997)
    Solar eclipse was observed to initiate changes in primary productivity and diel periodicity in zooplanktonic surface crowding. Eclipse effect was more pronounced on loricate, illoricate rotifers and a copepoda Mesocyclops ...
  • Solar Eclipse and its effect on Epilepsy 
    Sheji, P (Indian Institute of Astrophysics, Bangalore, 1997)
    A study was conducted at the Indian Epilepsy foundation to investigate the possibility of seizure being precipitated by the solar eclipse viewed on October 24, 1995. 47 known epileptic parient were included under the ...
  • High Energy Photons detection using Scintillation Counter during Total Solar Eclipse of October 24, 1995 
    Jaaffrey, S. N. A; Jain, Rajmal; Pandya, Alok; Bharti, Lokesh (Indian Institute of Astrophysics, Bangalore, 1997)
    We report the first observations of absorption and enhancement in flux of high energy photons during thte total solar eclipse of October 24, 1995. For the purpose of these observations, we employed a scintillation counter ...
  • Microwave Propagation and Troposphere: Eclipse Time Observation 
    Mishra, U; Sen, S; Sharma, S; Barbara, A. K; Devi, M (Indian Institute of Astrophysics, Bangalore, 1997)
    The effect of 24th October 1995 solar eclipse were studied on the reception of Latikor-Shillong and Nongpiur-Shillong links both operating at a frequency of 11GHz. The surface temperature, pressure and humidity were ...
  • Field Strength Measurements A-3 Method (Oblique Incidence) at Ahmedabad during Total Solar Eclipse October 1995 
    Lele, P. D; Jani, K. G; Patel, A. P (Indian Institute of Astrophysics, Bangalore, 1997)
    A RACAL-17L communication receiver is used to record signal strength at Ahmedabad on 11.8 MHz transmitted from Colombo. In the initial stages of the eclipse and again towards the ending phase the signal strength showed ...

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