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

Bibcode
2023MNRAS.525L..87C
DOI
10.1093/mnrasl/slad100
Chavan, Kshitij; Dabhade, Pratik; Saikia, D. J.
Referencia bibliográfica

Monthly Notices of the Royal Astronomical Society

Fecha de publicación:
10
2023
Revista
Monthly Notices of the Royal Astronomical Society
Número de autores
3
Número de autores del IAC
1
Número de citas
5
Número de citas referidas
4
Descripción
The excellent sensitivity and optimum resolution of LoTSS DR2 at 144 MHz has enabled us to discover a giant radio galaxy (J1225+4011) with three distinct episodes of jet activity, making it a member of a class of objects called triple-double radio galaxies (TDRGs). The source extends overall up to 1.35 Mpc in projected size, with the second episode extending to 572 kpc, and the inner episode to 118 kpc. J1225+4011 is only the fourth radio source showing a triple-double radio structure. All four sources have overall sizes greater than 700 kpc, making them giants. We also present the LoTSS 144 MHz map of the TDRG J0929+4146 and report its updated size. Lastly, we have summarized and discussed the radio properties of all TDRGs for the first time to understand their growth and evolution. Our observations suggest that the power of their jets may decrease with time.
Proyectos relacionados
Project Image
Centros de Galaxias a Escalas de Parsecs y Técnicas de Alta Resolución Espacial

Proyecto enfocado al estudio en el IR del núcleo de las galaxias más cercanas con resoluciones espaciales en el rango de 1 a 10 pc. Estas resoluciones espaciales, accesibles con los grandes telescopios de tierra usando técnicas frontera de observación, son por primera vez comparables a las que se obtienen rutinariamente con HST en el óptico y VLBI

Almudena
Prieto Escudero
En ejecución
Tipo
Con árbitro
Galaxias
Chorros
Formación y Evolución de Galaxias (FYEG)

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