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Browsing by Author "Saikia, D. J."

Browsing by Author "Saikia, D. J."

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  • Double-double radio galaxies from the First survey 
    Nandi, S.; Saikia, D. J. (Astronomical Society of India, 2012)
    The radio structures and optical identifications of a sample of 242 sources classified as double-double radio sources by Proctor (2011) from a morphological study of sources in the FIRST (Faint Images of the Radio Sky ...
  • The Double–Double Radio Galaxy 3C293 
    Joshi, S. A.; Nandi, S.; Saikia, D. J.; Ishwara-Chandra, C. H.; Konar, C. (2011)
    We present the results of radio continuum observations at frequencies ranging from ∼150–5000 MHz of the misaligned double– double radio galaxy (DDRG) 3C293 (J1352+3126) using the GMRT and the VLA, and estimate the time-scale ...
  • The Dynamics of Radio Galaxies and Double–Double Radio Galaxies 
    Konar, C.; Jamrozy, M.; Hardcastle, M. J.; Croston, J. H.; Nandi, S.; Saikia, D. J.; Machalski, J (2011)
    Relativistic and magnetized plasma ejected by radio loud AGNs through jets form the diffuse lobes of radio galaxies. The radiating particles (electron/electron–positron) in lobes emit in radio via the synchrotron process ...
  • A low-frequency study of two asymmetric large radio galaxies 
    Priya, A.; Nandi, S.; Saikia, D. J.; Singh, M. (2011)
    We present the results of multifrequency observations of two asymmetric, Mpc-scale radio sources with the Giant Metrewave Radio Telescope (GMRT) and the Very Large Array (VLA). The radio luminosity of these two sources, ...
  • A multifrequency study of the large radio galaxies 3C46 and 3C452 
    Nandi, S.; Pirya, A.; Pal, S.; Konar, C.; Saikia, D. J.; Singh, M. (2010)
    We present low-frequency observations starting from ~150MHz with the Giant Metrewave Radio Telescope, and high-frequency observations with theVery Large Array of two large radio galaxies 3C46 and 3C452. These observations ...
  • A multiwavelength study of five large radio galaxies 
    Priya, A.; Nandi, S.; Saikia, D. J.; Konar, C.; Singh, M. (2011)
    We present the results of GMRT and VLA observations of five large radio sources over a wide frequency range to investigate their structural and spectral asymmetries. The hot-spot brightness ratios suggest intrinsic source ...
  • A study of the environments of large radio galaxies using SDSS 
    Pirya, A.; Saikia, D. J.; Singh, M.; Chandola, H. C. (2012)
    The distributions of galaxies in the environments of 16 large radio sources have been examined using the Sloan Digital Sky Survey (SDSS). In the giant radio galaxy J1552+2005 (3C 326) which has the highest arm-length ...

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