The polarization in the JVAS/CLASS flat-spectrum radio sources: II. A search for aligned radio polarizations

Understand

We have used the very large JVAS/CLASS 8.4-GHz surveys of flat-spectrum radio sources to test the hypothesis that there is a systematic alignment of polarization position angle vectors on cosmological scales of the type claimed by Hutsemekers et al (2005).

• The polarization position angles of 4290 sources with polarized flux density >=1 mJy have been examined.
• They do not reveal large-scale alignments either as a whole or when split in half into high-redshift (z >= 1.24) and low-redshift sub-samples.
• Nor do the radio sources which lie in the specific areas covered by Hutsemekers et al (2005).