The authors present 143 giant radio galaxies larger than 3 Mpc, including 69 new discoveries and six above 5 Mpc, and show they are statistically indistinguishable from smaller giants except for hints of smaller bending angles.
Statistics of Hotspots in Radio Galaxies
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abstract
Based on images from the FIRST survey of the radio sky at 1.4 GHz, the positions of $\sim$5200 hotspots in $\sim$2870 radio galaxies and quasars were compiled, and linear sizes and radio luminosities were derived from the hosts redshifts. For a subsample of $\sim$2100 radio sources with exactly one hotspot in each of the two opposite lobes, their geometry in terms of asymmetry and bending was studied. The known (weak) tendency for the brighter lobe (here hotspot) to lie closer to the host than the fainter one, is confirmed. The median bending angle between the two arms of radio sources is 4.8$^{\circ}$ with a significant difference in the distribution between the 627 quasar hosts and the 1501 galaxies.
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Properties of Giant Radio Galaxies larger than 3 Mpc
The authors present 143 giant radio galaxies larger than 3 Mpc, including 69 new discoveries and six above 5 Mpc, and show they are statistically indistinguishable from smaller giants except for hints of smaller bending angles.