3C 452 is an elliptical galaxy[3] about 1.2 billion light years away located in the constellationLacerta. 3C 452 is a Seyfert galaxy[1][2] and a Fanaroff–Riley class 2radio galaxy, with the radiolobes extending for about 5 arcminutes, which at the distance of 3C 452 corresponds to about 450 kiloparsecs.[4] Fainter radio lobes extend farther away, at megaparsec scales, probably created during a former period of elevated nuclear activity.[5] Diffuse X-ray emission has been detected in the radio lobes.[3]
^ abIsobe, N.; Tashiro, M.; Makishima, K.; Iyomoto, N.; Suzuki, M.; Murakami, M. M.; Mori, M.; Abe, K. (1 December 2002). "A Chandra Detection of Diffuse Hard X-Ray Emission Associated with the Lobes of the Radio Galaxy 3C 452". The Astrophysical Journal. 580 (2): L111–L115. arXiv:astro-ph/0211112. Bibcode:2002ApJ...580L.111I. doi:10.1086/345658. S2CID7480794.