Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.216..385s&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 216, Sept. 15, 1985, p. 385-394.
Astronomy and Astrophysics
Astronomy
24
Extragalactic Radio Sources, Galactic Nuclei, Polarization Characteristics, Quasars, Radio Emission, Radio Galaxies, Cosmic Plasma, Galactic Rotation, Linear Polarization, Radiant Flux Density, Radio Spectra, Very Large Array (Vla)
Scientific paper
The authors present total intensity and linear polarization observations at λ6 cm of two quasars, 1416+067 (3CR 298) and 1828+487 (3CR 380), each of which has a small size and a steep high-frequency spectrum. Such sources, christened steep-spectrum cores (SSCs), are believed to occur in gas-rich galaxies where the radio plasma is vigorously interacting with a dense medium. The authors then investigate the polarization properties of both SSCs and flat-spectrum cores (FSCs) in a large sample of galaxies and quasars observed with high angular resolution by the Very Large Array. They find that the cores in galaxies tend to have a lower degree of percentage polarization, p6, at λ6 cm compared to the ones in quasars. The authors have re-examined the trend reported by van Breugel et al. that the SSCs tend to have a lower value of p6 than FSCs, and find that the p6 distributions for these two types of cores in quasars are similar, while for galaxies, the SSCs may be marginally less polarized than the FSCs.
Kodali P. D.
Saikia D. J.
Swarup Gadde
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