Polarized light in high-redshift radio galaxies

Details Polarized light in high-redshift radio galaxies Polarized light in high-redshift radio galaxies

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.341..307d&link_type=abstract

Nature (ISSN 0028-0836), vol. 341, Sept. 28, 1989, p. 307-309.

Physics

123

Galactic Evolution, Polarized Light, Radio Galaxies, Red Shift, Emission Spectra, Interstellar Matter, Polarimetry, Spectral Line Width, Star Formation, Ultraviolet Spectra

Scientific paper

A beaming/scattering model is proposed as an explanation for UV excesses associated with elongated continuum and emission-line structures along the radio axes of high-redshift radio galaxies. The model is based on observations of a blue, polarized continuum knot in the low-redshift radio galaxy PKS2152-69. The model is tested against imaging-polarimetry observations of two high-redshift galaxies, 3C277.2 and 3C368. It is found that both of these galaxies are linearly polarized at UV rest wavelengths with E-vectors within 25 degree of perpendicular to the axis of the extended continuum and radio structures. It is suggested that a large proportion of the UV light in these sources is scattered radiation from the nucleus.

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