2016A&A...585A.153B


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.18CET09:28:54

2016A&A...585A.153B - Astronomy and Astrophysics, volume 585A, 153-153 (2016/1-1)

Unveiling Gargantua: A new search strategy for the most massive central cluster black holes.

BROCKAMP M., BAUMGARDT H., BRITZEN S. and ZENSUS A.

Abstract (from CDS):

We aim to unveil the most massive central cluster black holes in the Universe. We present a new search strategy, which is based on a black hole mass gain sensitive calorimeter and which links the innermost stellar density profile of a galaxy to the adiabatic growth of its central supermassive black hole (SMBH). As a first step we convert observationally inferred feedback powers into SMBH growth rates using reasonable energy conversion efficiency parameters, ε. In the main part of this paper we use these black hole growth rates, sorted in logarithmically increasing steps encompassing our whole parameter space, to conduct N-body computations of brightest cluster galaxies (BCGs) with the newly developed Muesli software. For the initial setup of galaxies, we use core-Sersic models to account for SMBH scouring. We find that adiabatically driven core regrowth is significant at the highest accretion rates. As a result, the most massive black holes should be located in BCGs with less pronounced cores when compared to the predictions of empirical scaling relations, which are usually calibrated in less extreme environments. For efficiency parameters ε<0.1, BCGs in the most massive, relaxed, and X-ray luminous galaxy clusters might even develop steeply rising density cusps. Finally, we discuss several promising candidates for follow-up investigations, among them the nuclear black hole in the Phoenix cluster. Based on our results, its central black hole might have a mass of the order of 1011M.

Abstract Copyright:

Journal keyword(s): black hole physics - accretion, accretion disks - methods: numerical - galaxies: elliptical and lenticular, cD - quasars: supermassive black holes - galaxies: clusters: general

Simbad objects: 20

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Number of rows : 20

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 6C 001403+811827 QSO 00 17 08.4748554 +81 35 08.136591   17.60 16.52 15.95   ~ 356 1
2 ACO 85 ClG 00 41 37.8 -09 20 33           ~ 774 0
3 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 437 2
4 NGC 1399 BiC 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1425 1
5 ZwCl 0735+7421 ClG 07 41 40.3 +74 14 58     17.70     ~ 210 0
6 NGC 3842 BiC 11 44 02.155 +19 56 59.37 14.22 13.70 11.82 12.04   ~ 247 3
7 M 60 GiP 12 43 40.008 +11 33 09.40   10.3       ~ 1228 0
8 NGC 4839 rG 12 57 24.353 +27 29 51.80 13.56 13.02 12.06     ~ 416 3
9 NGC 4874 LIN 12 59 35.709 +27 57 33.80 13.01 13.7 11.40 12.122 11.386 ~ 701 3
10 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4129 2
11 NGC 4889 BiC 13 00 08.097 +27 58 37.29 12.93 13.0 11.30 11.652 10.906 ~ 633 1
12 ClG J1347-1145 ClG 13 47 33.5 -11 45 42           ~ 454 0
13 MCS J1447.4+0827 ClG 14 47 25.0 +08 27 32     19.9     ~ 18 0
14 IC 1101 BiC 15 10 56.100 +05 44 41.19   15.10       ~ 133 2
15 ACO 2029 ClG 15 10 58.7 +05 45 42           ~ 841 0
16 3C 338.0 QSO 16 28 38.2443686587 +39 33 04.231770853   12.78 11.78     ~ 692 5
17 ACO 2261 ClG 17 22 28.3 +32 09 13           ~ 273 0
18 ClG 1821+64 ClG 18 21 56.7276 +64 20 55.841           ~ 490 1
19 NAME Phoenix Cluster ClG 23 44 40.9 -42 41 54           ~ 113 0
20 NGC 7768 BiC 23 50 58.555 +27 08 50.43   14.0 14.23     ~ 168 0

    Equat.    Gal    SGal    Ecl

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2020.01.18-09:28:54

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