2020A&A...642A..89Z


Query : 2020A&A...642A..89Z

2020A&A...642A..89Z - Astronomy and Astrophysics, volume 642A, 89-89 (2020/10-1)

X-ray study of the merging galaxy cluster Abell 3411-3412 with XMM-Newton and Suzaku.

ZHANG X., SIMIONESCU A., AKAMATSU H., KAASTRA J.S., DE PLAA J. and VAN WEEREN R.J.

Abstract (from CDS):


Context. Previous Chandra observations of the Abell 3411-3412 merging galaxy cluster system revealed an outbound bullet-like sub-cluster in the northern part and many surface brightness edges at the southern periphery, where multiple diffuse sources are also reported from radio observations. Notably, a southeastern radio relic associated with fossil plasma from a radio galaxy and with a detected X-ray edge provides direct evidence of shock re-acceleration. The properties of the reported surface brightness features have yet to be constrained from a thermodynamic viewpoint.
Aims. We use the XMM-Newton and Suzaku observations of Abell 3411-3412 to reveal the thermodynamical nature of the previously reported re-acceleration site and other X-ray surface brightness edges. We also aim to investigate the temperature profile in the low-density outskirts with Suzaku data.
Methods. We performed both imaging and spectral analysis to measure the density jump and the temperature jump across multiple known X-ray surface brightness discontinuities. We present a new method to calibrate the vignetting function and spectral model of the XMM-Newton soft proton background. Archival Chandra, Suzaku, and ROSAT data are used to estimate the cosmic X-ray background and Galactic foreground levels with improved accuracy compared to standard blank sky spectra.
Results. At the southeastern edge, temperature jumps revealed by both XMM-Newton and Suzaku point to a M∼1.2 shock, which agrees with the previous result from surface brightness fits with Chandra. The low Mach number supports the re-acceleration scenario at this shock front. The southern edge shows a more complex scenario, where a shock and the presence of stripped cold material may coincide. There is no evidence for a bow shock in front of the northwestern "bullet" sub-cluster. The Suzaku temperature profiles in the southern low-density regions are marginally higher than the typical relaxed cluster temperature profile. The measured value kT500=4.84±0.04±0.19keV with XMM-Newton and kT500=5.17±0.07±0.13keV with Suzaku are significantly lower than previously inferred from Chandra.

Abstract Copyright: © ESO 2018

Journal keyword(s): methods: data analysis - X-rays: galaxies: clusters - galaxies: clusters: individual: Abell 3411 - shock waves

Simbad objects: 11

goto Full paper

goto View the reference in ADS

Number of rows : 11
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 ACO 168 ClG 01 15 09.8 +00 14 51           ~ 332 2
2 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 1888 1
3 ClG 0657-56 ClG 06 58 29.6 -55 56 39           ~ 839 1
4 ACO 3411 ClG 08 41 47.7 -17 28 46           ~ 61 0
5 NAME Abell 3411-3412 cluster ClG 08 42.0 -17 32           ~ 11 0
6 ACO 3412 ClG 08 42 05 -17 35.8           ~ 19 0
7 NAME Lockman Hole reg 10 45 00.0 +58 00 00           ~ 776 0
8 ACO 2146 ClG 15 56 04.7 +66 20 24           ~ 151 0
9 ESO 137-1 G 16 13 27.305 -60 45 50.59   14.84   13.87   ~ 96 0
10 NAME LHB X 16 42.0 +02 19           ~ 280 0
11 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 578 1

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2020A&A...642A..89Z and select 'bookmark this link' or equivalent in the popup menu


2021.07.25-17:57:15

© Université de Strasbourg/CNRS

    • Contact