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2013ApJS..206...16P - Astrophys. J., Suppl. Ser., 206, 16 (2013/June-0)

Integrated polarization properties of 3C48, 3C138, 3C147, and 3C286.


Abstract (from CDS):

We present the integrated polarization properties of the four compact radio sources 3C48, 3C138, 3C147, and 3C286, from 1 to 50 GHz, over a 30 yr time frame spanning 1982-2012. Using the polarized emission of Mars, we have determined that the position angle of the linearly polarized emission of 3C286 rises from 33° at 8 GHz to 36° at 45 GHz. There is no evidence for a change in the position angle over time. Using these values, the position angles of the integrated polarized emission from the other three sources are determined as a function of frequency and time. The fractional polarization of 3C286 is found to be slowly rising, at all frequencies, at a rate of ∼0.015%/yr. The fractional polarizations of 3C48, 3C138, and 3C147 are all slowly variable, with the variations correlated with changes in the total flux densities of these sources.

Abstract Copyright:

Journal keyword(s): instrumentation: interferometers - methods: data analysis - methods: observational - techniques: interferometric - techniques: polarimetric

Simbad objects: 10

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