Circular Polarization in PKS 1519-273

Details Circular Polarization in PKS 1519-273 Circular Polarization in PKS 1519-273

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20712702b&link_type=abstract

American Astronomical Society Meeting 207, #127.02; Bulletin of the American Astronomical Society, Vol. 37, p.1371

Astronomy and Astrophysics

Astronomy

Scientific paper

The intra-day variable BL Lac PKS 1519-273 exhibits variations at centimeter wavelengths in total intensity, linear polarization, and circular polarization. Their variability is caused by scintillation due to the interstellar medium. PKS 1519-273 displays 4% circular polarization at 4.8 GHz and the variability has persisted as long as the source has been observed. We present observations of this source over several years, showing that the circularly polarized emission is highly variable on micro-arcsecond scales. We determine properties of the structure of the emission by examining the light curves and associated scintillation theory.

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