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Browsing Publications of Astronomical Society of India by Title

Browsing Publications of Astronomical Society of India by Title

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  • 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 ...
  • Search for periodicities in distribution of orbits of planets 
    Vahia, M. N; Mahajani, P; Rao, A. R (Astronomical Society of India, 2003)
    We investigate the distribution of extra-solar-system planets in order to search for periodicities in their distribution around their parent star. We use the database of one hundred planets outside the solar system from ...
  • Search for pulsed Te V gamma- rays from Crab pulsar with the TACTIC Imaging gamma-ray Telescope 
    Rannot, R. C; Yadav, K. K; Dhar, V. K; Tickoo, A. K; Bhatt, N; Bhattacharyya, S; Chandra, P; Goyal, H. C; Kaul, C. L; Kaul, R. K; Kothari, M; Kotwal, S; Koul, R; Sahayanathan, S; Sapru, M. L; Sharma, M; Venugopal, K; Bhat, C. L (Astronomical Society of India, 2002-09)
    The TACTIC Imaging Element has observed Crab Nebula/pulsar for a total. of about 40 hours during Jan.- Mar. 2001. Preliminary results do not show any evidence of the 33 ms pulsations from the pulsar direction at an energy ...
  • A search for TeV photons from 4U0115 + 63 
    Rannot, R. C; Bhat, C. L; Senecha, V. K; Sapru, M. L; Tickoo, A. K; Kaul, R. K; Rawat, H. S (Astronomical Society of India, 1993)
    An analysis of 47 hours of data collected by the Gulmarg gamma-ray telescope during the period 1989 September 27-October 30, indicates absence of a statistically significant steady, persistent-pulsed or episodic pulsed ...
  • Secular period changes in ten eclipsing binaries 
    Panchatsaram, T; Abhyankar, K. D (Astronomical Society of India, 1982-06)
    The photoelectric times of minima, available for the eclipsing binaries KO Aql, V566 Oph, AH Vir, AG Vir, 44i Boo B, RT And , SV Cam, Tv Cas, AT Lac and U Peg have been analysed to study their orbital periods. KO Aqi, V566 ...
  • Seeing and microthermal measurements near Devasthal top 
    Stalin, C. S; Sagar, R; Pant, P; Mohan, V; Kumar, B; Joshi, Y. C; Yadav, R. K. S; Joshi, S; Chandra, R; Durgapal, A. K; Uddin, W (Astronomical Society of India, 2001)
    Results of the seeing measurements carried out near Devasthal top on 43 nights during March to April 1999 are presented. Open air seeing measurements were carried out with a differential image motion monitor (DIMM) using ...
  • Seismic probing of the solar core 
    Dziembowski, W. A (Astronomical Society of India, 1996)
    Only a small fraction of the solar p-modes have frequencies with any measurable sensitivity to the core structure. Nevertheless an accurate seismic sounding with such modes alone is possible. This requires a high-precision ...
  • The seismic sun 
    Basu, S (Astronomical Society of India, 2000)
    The "Seismic Sun" is a model of the Sun constructed using helioseismological deductions about the Sun. The seismic Sun is very similar to a standard solar model which incorporates gravitational settling of helium and heavy ...
  • Seminar on Nicholaus Copernicus and Astronomy 
    Sen, S. N (Astronomical Society of India, 1973)
  • Sensitivity and energy resolution estimates of the TACTIC gamma-ray telescope - Inputs from simulation studies (II) 
    Koul, M. K; Rannot, R. C; Sapru, M. L; Sathyabama, N; Bhat, C. L; Tickoo, A. K; Razdan, A. K; Gandhi, V. N (Astronomical Society of India, 1999)
    The response of the recently-commissioned TACTIC imaging Cerenkov telescope to atmospheric Cerenkov pulses produced by cosmid gamma-ray and hadron-initiated extensive air-showers has been studied through Monte Carlo ...
  • The session of 1916-17 
    Tomkins, H. G (Astronomical Society of India, 1917)
  • Seyfert galaxies: Nuclear radio structure and unification 
    Lal, D. V (Astronomical Society of India, 2002-09)
    We have observed a sample of Seyfert (Sy) galaxies with global Very Long Baseline Interferometry (VLBI) to test predictions of the unification scheme which hypothesizes that Sys of Type 1 and of Type 2 constitute a single ...
  • Seyferts at milli-arcsec scales 
    Lal, D. V; Shastri, P; Gabuzda, D (Astronomical Society of India, 2000)
    We have observed a sample of Seyfert galaxies using Global Very Long Baseline Interferometry at 5 GHz. Our goal is to investigate the systematics of their nuclear radio morphology on milli-arcsecond scales. We have chosen ...
  • SH on the Sun 
    Sinha, K; Joshi, G. C; Pande, M. C (Astronomical Society of India, 1976-12)
  • Shape of pulsar beams revisited 
    Mitra, D; Deshpande, A. A (Astronomical Society of India, 1999)
    Using a carefully selected subset of the recently published multifrequency polarimetric observations of 301 radio pulsas (Gould & Lyne 1997), we have attempted modeling the shape of pulsar beams. From the 6-frequency data ...
  • The shifting ecliptic 
    Hart, Henry (Astronomical Society of India, 1913-12)
  • The Shifting of position of the Earth's poles 
    Ridsdale, A. C (Astronomical Society of India, 1916)
  • Shocks in binary systems with high density winds or envelopes 
    Apparao, K. M. V (Astronomical Society of India, 1999)
  • Shocks in winds from accretion discs and the formation of high energy particles 
    Chattopadhyay, I; Chakrabarti, S. K (Astronomical Society of India, 2002)
    We study effects of radiation momentum deposition on jets and outflows from the disks and show that if disks are perturbed, jets could have propagating shock waves which may accelerate particles to observed slopes.
  • A short history of Nova Aquilae 
    Bose, P. C (Astronomical Society of India, 1918)

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