The Deep Full-Stokes Radio Sky

Understand

The new broad-band capabilities of large radio interferometers such as the GMRT and JVLA allow for long-integration mosaic imaging observations to create ultra-deep full-polarization images of the sky over wide frequency ranges.

• Achieving rms sensitivities of order 1 $\mu$Jy, these observations explore the radio source population at flux densities well below the regime dominated by classical radio galaxies and Active Galactic Nuclei.
• We present initial results from radio sources revealed with deep mosaicking observations with the GMRT and JVLA at respectively 0.6 and 5 GHz, and evidence that the $\mu$Jy sensitivity level marks the transition to detection of polarized emission from a population of sources dominated by emission from magnetic fields in the disks of starburst and normal galaxies.