2023MNRAS.525L..87C

Query : 2023MNRAS.525L..87C

2023MNRAS.525L..87C - Mon. Not. R. Astron. Soc., 525, L87-L92 (2023/October-2)

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

CHAVAN K., DABHADE P. and SAIKIA D.J.

Abstract (from CDS):

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.

Abstract Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): galaxies: active - galaxies: evolution - galaxies: interactions - galaxies: jets - radio continuum: galaxies

Simbad objects: 15

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Number of rows : 15
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SDSS J002838.86+003539.7 rG 00 28 38.856 +00 35 39.80           ~ 4 0
2 NGC 383 AGN 01 07 24.9647814840 +32 24 45.132586200   13.6 12.14     ~ 821 3
3 Z 150-14 Sy2 08 40 02.336 +29 49 02.73   20.00 19.62     ~ 209 1
4 4C 32.26 rG 08 41 13.0962137112 +32 24 59.720943456   14.08       ~ 79 1
5 [KJB2018] GRS J0929+4146 rG 09 29 10.660 +41 46 45.59           ~ 24 1
6 SDSS J121632.42+070955.7 G 12 16 32.4298770432 +07 09 55.746197280           ~ 7 0
7 FIRST J122537.8+401122 rG 12 25 37.8814696631 +40 11 22.070715949           ~ 3 0
8 ICRF J124733.3+672316 Bla 12 47 33.32959326 +67 23 16.4488689           ~ 100 2
9 6dFGS gJ140948.9-030233 rG 14 09 48.8587886760 -03 02 32.631257292   17.98   16.44   ~ 44 0
10 PKS 1545-321 rG 15 48 58.0331477149 -32 16 58.157614838           ~ 51 1
11 BD+33 2642 pA* 15 51 59.8854348048 +32 56 54.329485272 9.806 10.61 10.73 10.884 10.961 O7p 456 0
12 NGC 6166 Sy2 16 28 38.24470063 +39 33 04.2335319   12.78 11.78     ~ 793 2
13 MCG+01-43-006 SyG 16 51 07.9886687784 +04 59 35.547131472     18.25     ~ 502 1
14 3C 388.0 SyG 18 44 02.3840387736 +45 33 29.628672300   16.91 15.56     ~ 338 1
15 MCG+07-41-003 Bla 19 59 28.35656837 +40 44 02.0972325   16.22 15.10     ~ 2537 2

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