Archival Collections: Recent submissions

  • 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 ...
  • Multifrequency Vertical Incidence (A-1 Method) Absorption Measurements at Ahmedabad during Total Solar Eclipse October 1995 
    Lele, P. D; Jani, K. G; Patel, A. P (Indian Institute of Astrophysics, Bangalore, 1997)
    A vertical incidence multifrequency absorption experiment was conducted on 2.2, 2.5 and 2.8 MHz at Ahmedabad during TSE Oct. 24, 1995. From start of Eclipse a wave like structure starts and grows to maximum amplitude ...
  • Anomalous Behaviour of 22.3 kHz NWC Signal during Total Solar Eclipse of October 24, 1995 
    De, B. K; Sarkar, S. K (Indian Institute of Astrophysics, Bangalore, 1997)
    The effect of total solar eclipse of October 24, 1995 on long distance VLF radio wave propagation of 22.3 kHz from North West Cape, Australia to Calcutta is being reported here. After the commencement of the total eclipse ...
  • Preliminary Results of Ionosonde Measurements at Waltair (17.7 degree N) during the Total Solar Eclipse of October 24, 1995 
    Rama Rao, P. V. S; Prasad, DSVVD; Sri Ram, P; Jayachandran, P. T (Indian Institute of Astrophysics, Bangalore, 1997)
    The digital ionosonde system at Waltair was operated continuously from 23rd to 27th October 1995. The maximum percentage of obscuration (81%) of the solar disc occurred at 08.44 hrs IST as seen from Waltair on the eclipse ...
  • Effect of the Solar Eclipse of October 24, 1995 on the Ionospheric F-region over Kodaikanal 
    Karunakaran, D (Indian Institute of Astrophysics, Bangalore, 1997)
    HIgh time resolution soundings of the ionosphere over Kodaikanal were made with the IPS - 42 Digital Ionosonde on 24 October 1995 and on several days prior to and after that. The ionogram data were used to study the effect ...
  • Measurement of Water Vapour over Delhi during the Solar Eclipse - 1995 
    Bose, S; Lal, M; Ghosh, A. B (Indian Institute of Astrophysics, Bangalore, 1997)
    Ground-based IR spectroradiometer has been used for the measurements of water vapour over Delhi (28.7N, 77.2E, 220MSL) during October 24, 1995 solar eclipse. Water vapour variation has been measured during solar eclipse ...
  • Solar Ultraviolet Flux Variation in the Biological Band during the Total Solar Eclipse of October 24, 1995 
    Niranjan, K; Thulasiraman, S; Reddy, Y. S (Indian Institute of Astrophysics, Bangalore, 1997)
    Solar UV B Flux measurements have been made at four discrete wavelengths of 290, 300, 310 and 320 nm during and around the solar eclipse day of 24th October 1995. The Diurnal variation of the UV flux has shown the recovery ...
  • Measured Higher IR Irradiance on Solar Eclipse day 
    Lal, M; Bose, S; Ghosh, A. B (Indian Institute of Astrophysics, Bangalore, 1997)
    Direct solar irradiance between 1200 and 1700 nm have been measured using ground-based IR spectroradiometer during October 24, 1995, solar eclipse over Delhi (28.7 degree N, 77.2 degree E, 220 MSL), India. The irradiance ...
  • 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 ...

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