2009A&A...505...45G


Query : 2009A&A...505...45G

2009A&A...505...45G - Astronomy and Astrophysics, volume 505, 45-53 (2009/10-1)

Testing the radio halo-cluster merger scenario. The case of RXC J2003.5-2323.

GIACINTUCCI S., VENTURI T., BRUNETTI G., DALLACASA D., MAZZOTTA P., CASSANO R., BARDELLI S. and ZUCCA E.

Abstract (from CDS):

We present a combined radio, X-ray, and optical study of the galaxy cluster RXCJ2003.5-2323. The cluster hosts one of the largest, most powerful, and distant giant radio halos known to date, suggesting that it may be undergoing a strong merger. The aim of our multiwavelength study is to investigate the radio-halo cluster merger scenario. We studied the radio properties of the giant radio halo in RXCJ2003.5-2323 by means of new radio data obtained at 1.4GHz with the Very Large Array, and at 240MHz with the Giant Metrewave Radio Telescope, in combination with previously published GMRT data at 610MHz. The dynamical state of the cluster was investigated by means of X-ray Chandra observations and optical ESO-NTT observations. Our study confirms that RXCJ2003.5-2323 is an unrelaxed cluster. The unusual filamentary and clumpy morphology of the radio halo could be due to a combination of the filamentary structure of the magnetic field and turbulence in the inital stage of a cluster merger.

Abstract Copyright:

Journal keyword(s): radiation mechanisms: non-thermal - galaxies: clusters: general - galaxies: clusters: individual: RXCJ2003.5-2323

Nomenclature: Fig. 1: [GVB2009] A (Nos A-H). Fig. 5: [GVB2009] PN (Nos P1-P2), [GVB2009] Clump W (Nos Clump N, Clump S).

Simbad objects: 9

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Number of rows : 9
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 MCS J0025.4-1222 ClG 00 25 29.381 -12 22 37.06           ~ 130 0
2 ClG 0657-56 ClG 06 58 29.6 -55 56 39           ~ 874 1
3 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4096 2
4 ACO 2163 ClG 16 15 34.1 -06 07 26           ~ 543 0
5 3C 343 Sy2 16 34 33.8067419 +62 45 35.895020   21.06 20.61     ~ 211 1
6 ACO 2255 ClG 17 12 50.04 +64 03 10.6           ~ 533 0
7 [VV2006] J192332.2-210433 QSO 19 23 32.1900306576 -21 04 33.324574944   15.32 17.50 16.70   ~ 137 2
8 QSO J1949-1957 QSO 19 49 53.4198690816 -19 57 13.328259984       17.91   ~ 40 1
9 RXC J2003.5-2323 ClG 20 03 32.3 -23 23 30           ~ 55 0

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2022.08.15-14:40:48

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