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The excellent sensitivity and optimum resolution of LoTSS DR2 at 144 MHz hasenabled us to discover a giant radio galaxy (J1225+4011) with three distinctepisodes of jet activity, making it a member of a class of objects calledtriple-double radio galaxies (TDRGs). The source extends overall up to 1.35 Mpcin projected size, with the second episode extending to 572 kpc, and the innerepisode to 118 kpc. J1225+4011 is only the fourth radio source showing atriple-double radio structure. All four sources have overall sizes greater than700 kpc, making them giants. We also present the LoTSS 144 MHz map of the TDRGJ0929+4146 and report its updated size. Lastly, we have summarised anddiscussed the radio properties of all TDRGs for the first time to understandtheir growth and evolution. Our observations suggest that the power of theirjets may decrease with time.

A giant radio galaxy with three cycles of episodic jet activity from LoTSS DR2