Abstract

This work makes available a further 2,860deg2^2 of the GLEAM survey, covering half of the accessible Galactic Plane, across twenty frequency bands sampling 72−23172-231MHz, with resolution 4′−2′4'-2'. Unlike previous GLEAM data releases, we used multi-scale clean to better deconvolve large-scale Galactic structure. For the Galactic longitude ranges 345∘<l<67∘345^\circ < l < 67^\circ, 180∘<l<240∘180^\circ < l < 240^\circ, we provide a compact source catalogue of 22,037 components selected from a 60-MHz bandwidth image centred at 200-MHz, with RMS noise ≈10−20\approx10-20mJy beam−1^{-1} and position accuracy better than 2"2". The catalogue has a completeness of 50% at ≈120\approx120mJy, and a reliability of 99.86%. It covers Galactic latitudes 1∘≤∣b∣≤10∘1^\circ\leq|b|\leq10^\circ toward the Galactic Centre and ∣b∣≤10∘|b|\leq10^\circ for other regions, and is available from Vizier; images covering ∣b∣≤10∘|b|\leq10^\circ for all longitudes are made available on the GLEAM VO server and SkyView.

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