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Fig. 13.

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Details of the LoTSS DR2–estimated specific intensity function at central observing frequency νobs = 144 MHz and resolutions θFWHM ∈ {6″, 20″, 90″}, centred around the hosts of newly discovered giants. Row-wise from left to right, from top to bottom, the projected proper length lp is 2.5 Mpc, 1.9 Mpc, 1.1 Mpc, 1.0 Mpc, 0.9 Mpc, and 0.9 Mpc; in the same order, θFWHM is 90″, 20″, 90″, 20″, 6″, and 20″. All appear larger in the sky than the Moon. The top-left panel shows the giant of NGC 6185, a spiral galaxy. This is the first spiral galaxy–hosted giant known with lp > 2 Mpc. The middle-left panel shows a structure we interpret as a radio galaxy belonging to the elliptical galaxy NGC 2300. At ϕ = 2.2°, this giant has the largest angular length of all uncovered thus far.

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