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Browsing Publications of Astronomical Society of India by Subject "Quasars"

Browsing Publications of Astronomical Society of India by Subject "Quasars"

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  • Central engine or locomotive 
    Kapoor, R. C (Astronomical Society of India, 1986-09)
    The astrophysical aspects of proposals of escape of supermassive blackholes from galactic nuclei and their implications in relation to quasars are discussed. We conclude that high velocity recoil of the central engine can ...
  • The environment of the quasar MR 2251-178 
    di Serego Alighieri, S; Perryman, M. A. C; Macchetto, F; Nieto, J. -L; Lelievre, G (Astronomical Society of Indian, 1986-09)
    New high-resolution images of the field of the quasar MR 2251-178 obtained in the forbidden O III lambda-5007 and O II lambda-3727 lines with an ESA photon counting detector. The data are interpreted as a further evidence ...
  • Evolution of Stars and Metals in Damped Lyman-alpha Galaxies 
    Kulkarni, V. P (Astronomical Society of India, 2003)
    A unique tool to investigate distant young galaxies is to study the absorption lines they produce in the spectra of background quasars. The damped Lymanalpha (DLA) quasar absorption line systems allow us to empirically ...
  • NATO Advanced Study Institute on Energy Sources and Emission Mechanisms of Quasars 
    Ramadurai, S (Astronomical Society of India, 1977-12)
  • Nonlinear Propagation of Intense Electromagnetic Waves in Quasar and Pulsar Plasmas 
    Gangadhara, R. T (Astronomical Society of India, 1997)
    We present the results of analytical as well as numerical investigations of radiation-plasma interaction instabilities in astrophysical plasmas. We consider the stimulated Raman and Compton scattering in the continuum ...
  • Observations of Associated H I Absorption in Radio Galaxies and Quasars using GMRT 
    Swarup, G; Sarkar, A (Astronomical Society of India, 2002-09)
    We describe observations and preliminary results of absorption by cold hydrogen gas (H I) associated with six radio galaxies and quasars (Table 1) which may provide valuable information about their host galaxies and ...
  • Quasar absorption lines 
    Khare, Pushpa (Astronomical Society of India, 1995)
    Quasar absorption lines are an important tool to probe the universe at high redshifts, as they enable us to observe galaxies and intergalactic clouds at large distances, which are virtually inaccessible otherwise. This ...
  • Study of Radio and Optical Polarization Anisotropies in the Electromagnetic Waves from Extragalactic Sources 
    Sarala, S (Astronomical Society of India, 2003)
    Polarizations of electromagnetic radiation from active galactic nuclei (AGN) show some interesting effects such as the existence of a global anisotropy in the orientations of the radio wave polarizations from distant radio ...

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