2007
DOI: 10.1086/519786
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Radio Polarimetry of the ELAIS N1 Field: Polarized Compact Sources

Abstract: We present deep polarimetric observations at 1420 MHz of the European Large Area ISO Survey North 1 region (ELAIS N1) as part of the Dominion Radio Astrophysical Observatory Planck Deep Fields project. By combining closely spaced aperture synthesis fields, we image a region of 7.43 square degrees to a maximum sensitivity in Stokes Q and U of 78 microJy/beam, and detect 786 compact sources in Stokes I. Of these, 83 exhibit polarized emission. We find that the differential source counts (log N - log p) for polar… Show more

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Cited by 66 publications
(147 citation statements)
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“…These results indicate that for steep-spectrum radio sources, the mean fractional polarization increases as flux density decreases. This was confirmed by Taylor et al (2007) for sources with P > 500 microJy.…”
Section: Introductionsupporting
confidence: 54%
See 1 more Smart Citation
“…These results indicate that for steep-spectrum radio sources, the mean fractional polarization increases as flux density decreases. This was confirmed by Taylor et al (2007) for sources with P > 500 microJy.…”
Section: Introductionsupporting
confidence: 54%
“…The European Large Area ISO Survey North 1 (ELAIS N1) is the area for the DRAO ELAIS N1 deep field (Taylor et al 2007). This area was selected for deep polarization imaging as a window on the extragalactic sky previously observed by ISO (Oliver et al 2000) and the Spitzer Wide Area Extragalactic Survey (SWIRE, Lonsdale et al 2003).…”
Section: Introductionmentioning
confidence: 99%
“…This has limited investigations of the polarization properties of EGS to the bright ( ∼ > 80 mJy) radio source population, dominated by powerful, radio loud AGN. There are some indications from these bright sources that at least fainter steep-spectrum radio sources are more highly polarized (Mesa et al 2002;Tucci et al 2004), up to a median Π of ∼ 1.8% in the flux density range 100 -200 mJy and even higher for sources below 100 mJy (Taylor et al 2007). …”
Section: Polarization Sciencementioning
confidence: 92%
“…The presence of such a minimum in the distribution depends on the importance of Faraday depolarization and the importance of poloidal magnetic fields in the halo of these galaxies. We can measure this minimum by including the lowestorder antisymmetric deviations from a Gaussian in our Monte-Carlo analysis of a sufficiently large number of galaxies (Taylor et al 2007). The projected large frequency coverage of ASKAP will allow us to distinguish between highly frequency-dependent Faraday depolarization, and magnetic field structure that should not change with observing frequency.…”
Section: Polarization Sciencementioning
confidence: 99%
“…Total intensity counts from the NVSS are shown as diamonds and polarized counts are shown as crosses. The 10-field DRAO ELAIS N1 polarized source counts [3] are shown as triangles.…”
Section: Simulation Resultsmentioning
confidence: 99%