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  • Analysis of the Forward-scattering Hanle Effect in the Ca I 4227 Å Line 
    Anusha, L. S; Nagendra, K. N; Bianda, M; Stenflo, J. O; Holzreuter, R; Sampoorna, M; Frisch, H; Ramelli, R; Smitha, H. N (IOP Publishing, 2011-08-20)
    Coherent scattering of limb-darkened radiation is responsible for the generation of the linearly polarized spectrum of the Sun (the Second Solar Spectrum). This Second Solar Spectrum is usually observed near the limb of ...
  • Analysis of the light variations of BS Aquarii 
    Kilambi, G. C (Astronomical Society of India, 1982-09)
    An analysis of UBV light variations of BS Aqr is presented. Intrinsic (U-B) and (B-V) values are used to derive the temperature and surface gravity. The mean values are Teff = 7600 + or - 100 K and log geff = 3.8 + or - ...
  • Analysis of the solar coronal green line profiles from eclipse observations 
    Maya Prabhakar; Raju, K. P; Chandrasekhar, T (Astronomical Society of India, 2013)
    Analysis of the solar coronal green line profiles reveals information regarding the physical conditions of the solar corona like temperature, density, Doppler velocity, non-thermal velocity etc. It provides insights to the ...
  • Analysis of the structural complexity of Crab Nebula observed at radio frequency using a multifractal approach 
    Chanu, Athokpam Langlen; Pravabati, C; Rahman, Fazlu; Singh, R K Brojen; Kharb, Preeti (IOP Publishing Ltd, 2024-03)
    The Crab Nebula is an astrophysical system that exhibits complex morphological patterns at different observing frequencies. We carry out a systematic investigation of the structural complexity of the nebula using publicly ...
  • An analysis of ultraviolet (IUE) and optical spectra of high latitude Planetary Nebulae HB 7 and SP 3 
    Parthasarathy, M; Acker, A; de Martino, D; Koeppen, J; Leindecker, W (International Astronomical Union, 1997)
  • An Analysis of Ultraviolet Spectra of Extreme Helium Stars and New Clues to Their Origins 
    Pandey, G; Lambert, D. L; Simon, C. S; Kameswara Rao, N (University of Chicago Press, 2006-02)
    Abundances of about 18 elements including the heavy elements Y and Zr are determined from Hubble Space Telescope Space Telescope Imaging Spectrograph ultraviolet spectra of seven extreme helium stars (EHes): LSE 78, BD +10 ...
  • Analysis System for GRAPES-III Extensive Air Shower Data 
    John, A. V (Astronomical Society of India, 2003)
    GRAPES-III experiment [Tonwar S.C] consists of 271 scintillators of 1 m2. area each and a large area (560 m2) muon detector to record Extensive Air Showers (EAS) produced in the atmosphere by high energy cosmic rays (> 3 ...
  • Analytical modelling of Thirty Meter Telescope polarization 
    Ramya, M. Anche (Indian Institute of Astrophysics, 2014-08)
    The polarization introduced due to TMT telescope optics is studied using an analytical model. Mueller matrices are also generated for each optical element using Zemax based on which the instrumental polarization due to ...
  • Analytical studies of standing shocks in accretion flows around compact objects 
    Das, S (Astronomical Society of India, 2005-09)
    Shocks in advective flows around black holes have become es- sential ingredients in explaining wide variety of observed features. We first analytically study the properties of shocks in the special case when viscosity and ...
  • Analytical study of standing shocks around black hole 
    Das, S; Chakrabarti, S. K (Astronomical Society of India, 2002)
    Shocks from around black holes as the matter slows down by centifugal barrier. At the shocks, kinetic energy is converted into thermal energy and hard-X rays, outflows etc. are produced which are observed. We compute the ...
  • Anchor depths of flux elements and depths of flux sources in relation to the two rotation profiles of the sun's surface magnetic fields 
    Sivaraman, K. R; Gokhale, M. H (Springer, 2004-06)
    It is known for over two decades now that the rotation of the photospheric magnetic fields determined by two different methods of correlation analysis leads to two vastly differing rotation laws - one the differential and ...
  • A and F stars with circumstellar dust 
    Sivarani, T (Indian Institute of Astrophysics, Bangalore, 2000-03)
  • The angular appearance of white holes 
    Narlikar, J. V; Kapoor, R. C (D. Reidel Publishing Company, 1978-01)
    It is shown that non-radial light rays emitted from the surface of a white hole can emerge from inside the Schwarzschild barrier. The upper limit on their impact parameter is calculated under the requirement that such rays ...
  • Angular momentum of stars and their planets 
    Gurumath, S. R; Hiremath, K. M; Ramasubramanian, V (IOP Publishing, 2019-01)
    To understand the distribution of angular momenta between host stars and their planets, we estimate the spin angular momentum (J spin ) of host stars that follow a power law ${10}^{(42.33\pm 5.40)}{\left(\tfrac{{M}_{\star ...
  • The angular momentum of the asteroids 
    Sivaram, C (Springer, 1986-03)
    Consideration of the basic physics involved in the structure of the object are used to obtain relationships for the radius, period, angular momentum, etc. of a typical asteroid. The mass-angular momentum relation for ...
  • Angular resolution of Pachmarhi array of Cverenkov telescopes 
    Majumdar, P; Acharya, B. S; Bhat, P. N; Chitnis, V. R; Rahman, M. A; Singh, B. B; Vishwanath, P. R (Astronomical Society of India, 2002)
    Pachmarhi Array of Cverenkov Telescopes (PACT), consisting of a distributed array of 25 telescopes is used to sample the atmospheric Cverenkov Photon showers. The shower front is fitted to a plane and the direction of ...
  • Anil Kumar Das (1902 - 1961) Elected Fellow 1943 
    Bhattacharyya, J. C (Indian National Science Academy, 1994-12-01)
  • Anisotropy of the Indian continental lithospheric mantle 
    Heintz, M; Kumar, V. P; Gaur, V. K; Priestley, K; Rai, S. S; Prakasam, K. S (Wiley-Blackwell Publishing, 2009-12)
    Due to the paucity of seismological data available in the public domain, the structure of the Indian lithosphere is still little known. We investigate the lithospheric structure and potential mechanical coupling between ...
  • Annual meeting 
    Lee, W. A (Astronomical Society of India, 1915)
  • Annual meeting 
    Demetrius, L., ed. (Astronomical Society of India, 1919)

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