Publications of Astronomical Society of India: Recent submissions

  • Periodicity of the generating solutions of the restricted three-body problem in k three-dimensional coordinate system 
    Hassan, M. R (Astronomical Society of India, 2001)
    This paper deals with the periodicity of the generating solutions of the restricted three-body problem in three-dimensional coordinate system in KS-variables in the light of Krashinski (1963), Kurcheeva (1973) and Ahmad (1995).
  • GRB 000926 and its optical afterglow : Another possible evidence for non-isotropic emission 
    Sagar, R; Pandey, S. B; Mohan, V; Bhattacharya, D; Castro-Tirado, A. J (Astronomical Society of India, 2001)
    The CCD Johnson BV and Cousins RI photomertric magnitudes are determined for 20 stars in the field of GRB 000926. They are used to calibrate the present R as well as published BVRI photometric magnitudes of the GRB 000926 ...
  • Spectroscopic observations of first ISOGAL sources 
    Ojha, D. K; Sivarani, T; Parthasarathy, M; Omont, A; Ganesh, S; Simon, G (Astronomical Society of India, 2000)
    Infrared Space Observatory Galactic (ISOGAL) survey at 7 and 15 μm of ~ 22 deg2 of the inner galactic disk and bulge, has detected several hundred thousand sources. Combining ISOGAL survey with I, J, H, Ks data of DENIS ...
  • NIFS : A Near Infrared Imaging Fabry-Perot Spectrometer 
    Anandarao, B. G; Nanda Kumar, M. S; Jog, N. S; Patel, R. T (Astronomical Society of India, 2000)
    We describe here a Near-Infrared Imaging Fabry-Perot Spectrometer (NIFS ) operating in the K band to provide a maximum spectral resolution of 2000-3000 over two optional fields of view of ~ 2? x 2? and 4? x 4? with plate ...
  • Sky transparency over Naini Tal : A retrospective study 
    Kumar, B; Sagar, R; Rautela, B. S; Srivastava, J. B; Srivastava, R. K (Astronomical Society of India, 2000)
    We present an analysis of the atmospheric extinction coefficients measured during 1964 to 1999 in broad-band photometric passbands at U.P. State Observatory, Naini Tal. The extinction properties are also studied from the ...
  • Linear polarization of binaries II. Phase function : wQ~(µ)Q~' (µ') 
    Barman, S. K (Astronomical Society of India, 2000)
    This paper presents a method of calculating linear polarizations in close binaries whose surfaces are distorted due to tidal and rotational forces. Limb-darkening effect has been taken into account. Particles of different ...
  • Covariation of critical frequency of F2-layer and relative sunspot number 
    Chattopadhyay, R (Astronomical Society of India, 2000)
    Seasonal and overall covariation of relative sunspot number and the critical frequency of F2-layer of the terrestrial ionosphere has been investigated and the following results have been obtained; 1) There is a strong ...
  • Magnetic reconnection 
    Lakhina, G. S (Astronomical Society of India, 2000)
    Magnetic reconnection is considered as a basic plasma process which efficiently converts magnetic energy to plasma kinetic energy companied by changes in the topology of the magnetic field configuration. It prohibites the ...
  • Stability of collinear equilibrium points in the generalised photogravitational elliptic restricted three-body problem 
    Sahoo, S. K; Ishwar, B (Astronomical Society of India, 2000)
    We have examined stability of collinear equilibrium points in the generalised photogravitational elliptic restricted three body problem. The problem is generalised in the sense that the smaller primary is considered as an ...
  • Some statistical aspects of cometary orbits and their discoveries 
    Biswas, S. N (Astronomical Society of India, 2000)
    The study of the cometary orbital elements available in the tenth edition of the 'Catalogue of Cometary Orbits' (Marsden and Williams, 1995) which hereafter will be written as the 'Catalogue 1995' and the perpetual discoveries ...
  • Tidal effects on a satellite galaxy influenced by a massive perturber 
    Namboodiri, P. M. S; Cowsik, R; Sugimoto, D (Astronomical Society of India, 2000)
    The tidal influence on a satellite galaxy by a massive perturber is studied by numerical simulations. The satellite is modelled as a non-rotating spherical cluster of uniform density. The perturber is a galaxy described ...
  • Far-infrared observations of three compact IRAS sources in Sh 247 star forming complex: IRAS 06056+2131, 06058+2138 and 06061+2151 
    Ghosh, S. K; Iyengar, K. V. K; Karnik, A. D; Rengarajan, T. N (Astronomical Society of India, 2000)
    Three compact IRAS sources -- IRAS 06056+2131, 06058+2138 and 06061+2151 in the Sh 247 complex and having IRAS colours typical of compact H II regions have been observed in the far-infrared using the TIFR 1 m balloon-borne ...
  • GRB 000301C with peculiar afterglow emission 
    Sagar, R; Mohan, V; Pandey, S. B; Pandey, A. K; Stalin, C. S; Castro-Tirado, A. J (Astronomical Society of India, 2000)
    The CCD magnitudes in Johnson V and Cousins R and I photometric passbands are determined for GRB 000301C afterglow starting ~ 1.5 day after the γ - ray burst. In fact we provide the earliest optical observations for this ...
  • The topology of the universe 
    Roukema, B. F (Astronomical Society of India, 2000)
    The Hibert-Einstein equations are insufficient to describe the geometry of the Universe, as they only constrain a local geometrical property curvature. A global knowledge of the geometry of space, if possible, would require ...
  • PINTofALE : Package for the interactive analysis of line emission 
    Kashyap, V; Drake, J. J (Astronomical Society of India, 2000)
    PINTofALE was developed to analyze spectroscopic data from coronal sources in the 1-1500 Å range. It is based on a modular set of IDL tools that interact with an atomic database and with observational data. The tools allow ...
  • Salient mechanical and optical design features of 25m-diameter light-collector of MACE imaging Gamma-Ray Telescope 
    Bandyopadhayay, K; Koul, D. K; Mishra, V. K; Koul, R; Suthar, R. L; Koul, M. K; Jayandranath, M; Bhat, C. L (Astronomical Society of India, 2000)
    A low-threshold energy, high-sensitivity gamma-ray telescope, MACE (for Major Atmospheric Cerenkov Experiment) is proposed to be built in India for explorations of gamma-ray sky in 100's keV - 10's GeV photon energy range, ...
  • A DSO-based system for temporal-profile extraction of atmospheric Cerenkov events 
    Tickoo, A. K; Kaul, S. K; Kaul, I. K; Koul, R; Bhat, C. L (Astronomical Society of India, 2000)
    The TACTIC array of Cerenkov telescopes, being set up at Mt. Abu, proposes to record time-profiles of atmospheric Cerenkov pulses with a view to exploit apparent differences in the associated time-parameters for a possible ...
  • A spectral-ratio based trigger generator for TACTIC vertex elements 
    Kaul, I. K; Kaul, S. R; Tickoo, A. K; Koul, R; Bhat, C. L (Astronomical Society of India, 2000)
    An unconventional hardware trigger-generator, based on an on-line estimation of the spectral-ratio of the Cerenkov radiation, has been developed for the three Vertex Elements of the TACTIC gamma-ray telescope array. The ...
  • Pachmarhi array of Cerenkov telescopes 
    Bhat, P. N; Acharya, B. S; Chitnis, V. R; D'Souza, A. I; Francis, P. J; Gothe, K. S; John, A. V; Mazumdar, P; Nagesh, B. K; Purohit, P. N; Rahman, M. A; Rao, S. K; Rao, K. K; Sharma, S. K; Stanislaus, A. J; Sudershanan, P. V; Swamy, M. R. K; Upadhyaya, S. S; Murty, B. L. V (Astronomical Society of India, 2000)
    Pachmarhi Array of Cerenkov Telescopes (PACT) consisting of 25 telescopes has been installed at Pachmarhi (longitude : 76d 26' E, latitude : 22d 28' N and altitude : 1075m) recently. The telescopes are deployed in the form ...
  • A new automatic star tracker for balloon-borne astronomy instruments 
    Madhwani, P. P; Manchanda, R. K (Astronomical Society of India, 2000)
    The tracking of an astronomical object requires continuous updating of the look angles in azimuth and zenith. The mathematical calculation of these angles needs the position coordinates (latitude and longitude) of the place ...

Search DSpace


Browse

My Account