Draft:RAD@home Astronomy Collaboratory

• Comment: Needs secondary sources, i.e. those clearly written by people not associated with the project. Stuartyeates (talk) 01:25, 7 December 2025 (UTC)

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The twin ring Odd Radio Circle RAD J131346.9+500320 discovered by RAD@home citizen science research collaboratory.

RAD@home is a citizen science research collaboratory in India. It focuses on training university science students to enable radio astronomy discoveries using the GMRT which is a SKA pathfinder radio telescope, and other telescopes operating in multiple bands of electromagnetic spectrum . It helps students/public understand multi-wavelength images of galaxies, taken primarily through the radio surveys like NVSS (1400 MHz) with the VLA and TGSS (150 MHz) taken with the GMRT. In 2022, the Collaboratory, led by its founder Ananda Hota, discovered a unique AGN where the radio jet appeared to hit a neighbouring galaxy and bounced back forming a mushroom-shaped radio bubble.. Initial hints on this rare process was seen in the archival data but confirmation was achieved with targeted observation with the GMRT telescope at 325 MHz or 90cm band. Recently, in October 2025, the collaboratory discovered the farthest and the most powerful odd radio circle (ORC), named RAD J131346.9+500320, which is also the first ORC to be discovered through citizen science process . This was spotted by trained citizen scientists analysing the 144 MHz radio images of the sky obtained by the European LOFAR radio telescope. This ORC was the first to be discovered from LOFAR low frequency data.