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Browsing by Author "Athreya, R"

Browsing by Author "Athreya, R"

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  • Low frequency radio emission from seyfert galaxies 
    Singh, V; Shastri, P; Athreya, R (Astronomical Society of the Pacific, 2009-09)
    Seyfert galaxies are low-luminosity, radio-quiet, nearby active galaxies. The high-frequency radio observations of several Seyfert galaxies show jet-like features, which tend to be confined within the host galaxy, whereas ...
  • Low-frequency radio observations of Seyfert galaxies: A test of the unification scheme 
    Singh, V; Shastri, P; Ishwara-Chandra, C. H; Athreya, R (EDP Sciences, 2013-06)
    Aims. We present low-frequency radio imaging and spectral properties of a well-defined sample of Seyfert galaxies using GMRT 240/610 MHz dual frequency observations. Radio spectra of Seyfert galaxies over 240 MHz to 5.0 ...
  • Radio and X-ray Emission from Low-Luminosity AGNs: Testing Unification Hypothesis 
    Singh, V; Shastri, P; Risaliti, G; Athreya, R (Astronomical Society of the Pacific, 2010-10)
    We investigate the low-frequency radio properties and the X-ray spectral properties of a sample of Seyfert galaxies in order to compare the two subtypes of Seyferts and rigorously test the predictions of Seyfert unification.
  • Seyfert Galaxies: Radio Continuum Emission Properties and the Unification Scheme 
    Singh, V; Shastri, P; Athreya, R (Indian Academy of Sciences, 2011-12)
    Seyfert galaxies are classified mainly into type 1 and type 2 depending on the presence and absence of broad permitted emission lines in their optical spectra, respectively. Unification scheme hypothesizes that the ...

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