Speaker
Description
Understanding the active galactic nuclei (AGN) lifecycle is crucial in unraveling galaxy evolution through feedback processes. However, radio AGN showing recurrent nuclear activity known as restarted sources are relatively rare compared to active ones. Our work reports the radio spectral analysis of a radio galaxy that has long been observed as a classic hybrid source which turns out to show three cycles of jet activity thanks to the sensitivity of the LoTSS DR2 survey. In addition to being among the small population of triple-double radio galaxies (TDRGs) discovered so far, the source shows interesting bent morphology where the three pairs of lobes seem to still be connected to each other by bridge emission. At the spectroscopic redshift of z ~ 0.14, the TDRG extends to ~ 1.3 Mpc in size, which also makes it a giant radio galaxy.
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