Data

Here we provide links to the LoTSS DR2 RM Grid catalogue and the associated polarization spectra (following the RMTable and PolSpectra standards as much as possible). The catalogue contains 2,461 extragalactic high-precision RM values across 5,720 sq. deg. of the northern sky, with associated redshifts for 79% of sources. The catalogue was derived from the LoTSS DR2 Stokes Q and U frequency cubes at an angular resolution of 20 arcsec across a frequency range of 120 to 168 MHz (Shimwell et al. 2022). A full description of this catalogue is provided in O’Sullivan et al. (2023), and some example python code for interacting with the catalogue is provided here: https://github.com/sposullivan/LoTSS-RM-Grid. The QU frequency cubes and the RM synthesis data products are available on the SURF Data Repository (DOI:10.25606/SURF.lotss-dr2).

The RM Grid catalogue and associated polarization spectra can be downloaded here: