Kodaikanal Observatory Publications: Recent submissions

  • Infrared Solar Radiation Measurement during Total Solar Eclipse 
    Jain, S. L; Arya, B. C; Singh, S. K; Tripathi, O. P; Hamid, A (Indian Institute of Astrophysics, Bangalore, 1997)
    The occurrence of Total Solar Eclipse on October 24, 1995 provided an unique opportunity to conduct some experiments using IR sun photometers in the spectral range 0.75 micrometer to 1.6 micrometer and 205 to 14.5 micrometer ...
  • Atmospheric Characteristics at Trombay relating to the October 1995 Solar Eclipse 
    Sapra, B. K; Sunny, Faby; Kulkarni, P. B; Mahadevan, T. N; Pandit, G. G (Indian Institute of Astrophysics, Bangalore, 1997)
    A study was undertaken to examine the effect of a short-term reduction in the solar intensity on the characteristics of the atmospheric environment. Meteorological parameters, solar radiation variations, major pollutant ...
  • Results of the October 24, 1995 Solar Eclipse Balloon Experiments from Thumba 
    Appu, K. S; Santhikumar, K. S; Padmanabha Pillai, R; Narayanan, V; Chandrasekharan, C. K (Indian Institute of Astrophysics, Bangalore, 1997)
    Nine high-altitude meteorological radiosonde balloon ascents were conducted from Thumba and Trivandrum during 23rd - 25th October, 1995 to study the partial solar eclipse induced variations of the temperature and winds in ...
  • Ground-Level Humidity, Pressure and Temperature Measurements during the October 24, 1995 Total Solar Eclipse 
    Gonzalez, G (Indian Institute of Astrophysics, Bangalore, 1997)
    Measurements of the relative humidity, air pressure, and air temperature were obtained at Nim Ka Thana, India on October 24, 1995 during tht total eclipse of the Sun. Data were also obtained 24 hours previous to the eclipse. ...
  • Radio spectrograph observations of the recent soalr eclipse on October 24, 1995 
    Shanmugaraju, A; Umapathy, S (Indian Institute of Astrophysics, Banglaore, 1997)
    A solar radio spectrograph has been developed to observe the transient solar radio emissions in the band of 30 MHz at our School of Physics. A non trackable log periodic antenna having beam of 60 degree in E-W and 90 degree ...
  • Radio Observations of Compact Sources in the Outer Solar Corona 
    Ramesh, R; Subramanian, K. R; Sastry, Ch. V (Indian Institute of Astrophysics, Bangalore, 1997)
    We have observed radio emission from the solar corona at a frequency of 77 MHz during the total solar eclipse on October 24, 1995 from our observatory at Gauribidanur. Sources of angular sizes less than or equal to 1.5' ...
  • Lunar Occultation Observations of the Microwave Sun During the Eclipse of October 24, 1995 
    Bagchi, J; Subramanian, K. R; Ebenezer, E; Gowda, N; Abdul Hameed, A. T (Indian Institute of Astrophysics, Bangalore, 1997)
    The interpretation of the lunar occultation data recorded at the microwave frequencies of 2025, 3.80 and 4.20 GHz from two stations during the October 24, 1995 solar eclipse in India is presented.
  • Reconstruction of Solar Features from an Image of Partially Eclipsed Sun 
    Krishnakumar, V; Venkatakrishnan, P (Indian Institute of Astrophysics, Bangalore, 1997)
    The photoheliograms obtained at Kodaikanal during the partial eclipse of the Sun on October 24, 1995 were digitised on a PDS microdensitometer. The lunar limb was used as a standard source for the digital reconstruction ...
  • A Speckle Experiment during the Partial Eclipse 
    Saha, S. K; Nagabhushana, B. S; Ananth, A. V; Venkatakrishnan, P (Indian Institute of Astrophysics, Bangalore, 1997)
    An experiment for the speckle reconstruction of solar features was developed for observing the partial eclipse of the sun as viewed from Bangalore on October 24, 1995. No data could be obtained because of cloudy sky but ...
  • Modelling of Solar Coronal Oscillations 
    Krishan, V (Indian Institute of Astrophysics, Bangalore, 1997)
    The study of coronal osciallations is important since these oscillations could be responsible for the heating of the solar corona. Coronal structures are ex[ected to undergo three types of oscillations - non-compressional ...
  • Observation of Total Solar Eclipse of October 24, 1995 
    Hiei, K; Inoue, K; Takahashi, N; Fukushima, H (Indian Institute of Astrophysics, Bangalore, 1997)
    K-corona and E-corona were observed at Dundlodh in India. Coronal image, processed by a computer, shows polar plumes in north- and south-pole and streamers at east- and west-limb.
  • Spectroscopy, Multicolour Photometry and Structure of the Solar Corona during the Total Solar Eclipse on October 24, 1995 
    Rusin, V; Klocok, L; Minarovjech, M; Rybansky, M (Indian Institute of Astrophysics, Bangalore, 1997)
    A brief description of the scientific goals and preliminary results related to the 24 October 1995 solar eclipse at Nim Ka Thana is given. The white-light corona was of a minimum type above the E- and W-limbs. Coronal holes ...
  • Coronal Heating Experiments of the Williams College Group at Mukandgarh Fort, Rajasthan 
    Pasachoff, J. M; Babcock, B. A; Sebastian Diaz; Reardon, K. P; Kutner, E. R (Indian Institute of Astrophysics, Bangalore, 1997)
    We report on the Williams College expedition to Mukandgarh Fort, Rajasthan, for the total solar eclipse of 24 October 1995. The main experiments were a search for 1 Hz oscillations in coronal loops as an indication of ...
  • 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 ...
  • 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 ...
  • Determination of Linear Polarization of Solar Corona from Observations of the Eclipse of October 24, 1995 
    Srikanth, R; Sharma, Mangala; Rajaguru, S. P (Indian Institute of Astrophysics, Bangalore, 1997)
    Photographs of the Solar Corona were taken using a refractor telescope and polarizer during the Solar Eclipse of October 24, 1995. Two sets of photographs with 0.5 second and 1.0 second exposure, for different orientations, ...
  • Broad Band Photometry of Solar Corona during the Total Solar Eclipse of October 24, 1995 
    Bagare, S. P; Aleem, P. S. M; Singh, J; Saxena, A. K (Indian Institute of Astrophysics, Bangalore, 1997)
    A 30 cm coelostat, a red broad band filter, and a 15 cm objective providing an f/15 beam were used to obtain high resolution picture is recorded with its top around 2Ro, in the near north polar region. The nearest YOHKOH ...
  • Search for Hydrogen-alpha Emitting Cool Pockets in Corona During the Total Solar Eclipse of October 24, 1995 
    Cowsik, R; Singh, J; Raju, K. P; Saxena, A. K; Samson, J. P. A; Naidu, B. N (Indian Institute of Astrophysics, Bangalore, 1997)
    Narrow pass band hydrogen alpha filtergrams were obtained during totality at Kalpi, to look for cool pockets of H-alpha emission in corona first observed by Bappu and Bhattacharyya during the 1970 Mexican eclipse observations. ...
  • High Resolution Multislit Spectroscopy of Solar Corona in two lines during the Total Solar Eclipse of Oct. 24, 1995 
    Singh, J; Gupta, S. S; Cowsik, R (Indian Institute of Astrophysics, Bangalore, 1997)
    Two coronal emission lines 5303 Armstrong (Fe XIV) and 6374 Armstrong (Fe X) corresponding to ionization temperatuess of 2 and 1 million degree kelvin respectively were used to obtain the high resolution coronal spectra ...
  • Fabry-Perot Interferometric Observations of the Solar Corona in the Green Line 
    Raju, K. P; Singh, J; Muralishankar, S (Indian Institute of Astrophysics, Bangalore, 1997)
    An imaging Fabry-Perot interferometer was designed and used for coronal observations in the green line (FeXIV) 5303 Armstrong. The observations were carried our at Nim Ka Thana, Rajasthan, India during the total solar ...

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