2012MNRAS.422.3503W


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.28CET11:16:58

2012MNRAS.422.3503W - Mon. Not. R. Astron. Soc., 422, 3503-3515 (2012/June-1)

X-ray observations of the galaxy cluster Abell 2029 to the virial radius.

WALKER S.A., FABIAN A.C., SANDERS J.S., GEORGE M.R. and TAWARA Y.

Abstract (from CDS):

We present Suzaku observations of the galaxy cluster Abell 2029, which exploit Suzaku's low particle background to probe the intracluster medium at radii beyond that which is possible with previous observations, and with better azimuthal coverage. We find significant anisotropies in the temperature and entropy profiles, with a region of lower temperature and entropy occurring to the south-east, possibly the result of accretion activity in this direction. Away from this cold feature, the thermodynamic properties are consistent with an entropy profile which rises, but less steeply than the predictions of purely gravitational hierarchical structure formation. Excess emission in the northern direction can be explained due to the overlap of the emission from the outskirts of Abell 2029 and nearby Abell 2033 (which is at slightly higher redshift). These observations suggest that the assumptions of spherical symmetry and hydrostatic equilibrium break down in the outskirts of galaxy clusters, which poses challenges for modelling cluster masses at large radii and presents opportunities for studying the formation and accretion history of clusters.

Abstract Copyright: 2012 The Author Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: A2029 - X-rays: galaxies: clusters

Simbad objects: 14

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Number of rows : 14

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 222 ClG 01 37 27.4 -12 58 45           ~ 125 1
2 ACO 223 ClG 01 37 55.9 -12 49 11           ~ 111 1
3 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 1990 1
4 ACO 1413 ClG 11 55 18.0 +23 24 19           ~ 384 0
5 NAME North Polar Spur ISM 12 00 +00.0           ~ 310 1
6 ACO 1795 ClG 13 49 00.5 +26 35 07           ~ 1174 0
7 ACO 2028 ClG 15 09 33 +07 31.6           ~ 69 0
8 RX J1509.5+0846 X 15 09 35.9 +08 46 05           ~ 4 0
9 ACO 2029 ClG 15 10 58.7 +05 45 42           ~ 867 0
10 NSC J151109+052006 ClG 15 11 09.86 +05 20 05.7           ~ 2 0
11 ACO 2033 ClG 15 11 23.50 +06 19 08.4           ~ 88 0
12 ACO 2052 ClG 15 16 45.5 +07 00 01           ~ 685 1
13 ACO 2066 ClG 15 23 56 +01 02.4           ~ 16 0
14 ACO 2142 ClG 15 58 20.00 +27 14 00.3           ~ 682 0

    Equat.    Gal    SGal    Ecl

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