2025ApJ...989..223C


Query : 2025ApJ...989..223C

2025ApJ...989..223C - Astrophys. J., 989, 223 (2025/August-3)

MeerKAT 1.3 GHz Observations of the Wide-angle Tail Radio Galaxy J1712-2435.

COTTON W.D., GIRI G., AGNIHOTRI P.J., SAIKIA D.J., THORAT K. and CAMILO F.

Abstract (from CDS):

We present full-polarization MeerKAT images of the wide-angle tail, giant radio galaxy J1712-2435 at 1.3 GHz with 7$\mathop{.}\limits^{\unicode{x02033}}$5 resolution and an rms sensitivity of 8 μJy beam–1. Due to its angular proximity to the Galactic center (l = 359$\mathop{.}\limits^{\unicode{x000b0}}$6, b = +8$\mathop{.}\limits^{\unicode{x000b0}}$5), the immediate environment is not well understood, but there are massive clusters nearby. Emission can be traced over an extent of 34$\mathop{.}\limits^{{\rm{^{\prime} }}}$6, which at the redshift of 0.024330 corresponds to a projected length of 1.02 Mpc. The inner jets are quite straight, but then bend and completely decollimate into extended plumes nearly orthogonal to the initial jet directions at a projected distance of approximately 100 kpc. The near-unity brightness ratio of the inner jets suggest that they are orientated within a few degrees of the plane of the sky. The 1400 MHz power is 3.9 × 1024 W Hz–1, somewhat below the FRI/FRII divide. The total power emitted is estimated to be 5.6 × 1041 erg s–1 over the range 10 MHz-100 GHz. The source dynamics are modeled with magnetohydrodynamics simulations; the result is a rough reproduction of the source's radio morphology/appearance. This study further highlights the merit of alternative scenarios, calling for future observational and numerical efforts.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Tailed radio galaxies - Giant radio galaxies - Active galactic nuclei - Radio jets - Radio plumes

Simbad objects: 8

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Number of rows : 8
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 3C 75 PaG 02 57 41.64 +06 01 28.0           ~ 312 1
2 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
3 [TKT2016] 4585 GrG 17 12 31.75 -24 45 05.4           ~ 2 0
4 2MASX J17124278-2435477 GiG 17 12 42.788 -24 35 47.70           ~ 14 0
5 2MASX J17131541-2502266 GiG 17 13 15.4372972080 -25 02 26.766567024           ~ 16 0
6 ClG 1710-2507 ClG 17 13 39 -25 11.1           ~ 19 0
7 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
8 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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