2005MNRAS.364.1343D


Query : 2005MNRAS.364.1343D

2005MNRAS.364.1343D - Mon. Not. R. Astron. Soc., 364, 1343-1353 (2005/December-3)

Radio bubbles in clusters of galaxies.

DUNN R.J.H., FABIAN A.C. and TAYLOR G.B.

Abstract (from CDS):

We extend our earlier work on cluster cores with distinct radio bubbles, adding more active bubbles, i.e. those with GHz radio emission, to our sample and also investigating `ghost bubbles', i.e. those without GHz radio emission. We have determined k, which is the ratio of the total particle energy to that of the electrons radiating between 10 MHz and 10 GHz. Constraints on the ages of the active bubbles confirm that the ratio of the energy factor, k, to the volume filling factor, f, lies within the range 1 ≲k/f≲ 1000. On the assumption that there is pressure equilibrium between the radio-emitting plasma and the surrounding thermal X-ray gas, none of the radio lobes has equipartition between the relativistic particles and the magnetic field. A Monte Carlo simulation of the data led to the conclusion that there are not enough bubbles present in the current sample to be able to determine the shape of the population. An analysis of the ghost bubbles in our sample showed that on the whole they have higher upper limits on k/f than the active bubbles, especially when compared with those in the same cluster. A study of the Brightest 55 (B55) cluster sample shows that 17, possibly 20, clusters required some form of heating as they have a short central cooling time, tcool≤ 3Gyr, and a large central temperature drop, Tcentre/Touter< 1/2. Of these, between 12 (70 per cent) and 15 (75 per cent) contain bubbles. This indicates that the duty cycle of bubbles is large in such clusters and that they can play a major role in the heating process.

Abstract Copyright: 2005 The Authors. Journal compilation © 2005 RAS

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

CDS comments: in Fig. 4 : PKS 1404 not identified.

Simbad objects: 44

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Number of rows : 44
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 ACO 85 ClG 00 41 37.8 -09 20 33           ~ 844 0
2 ACO 133 ClG 01 02 39.0 -21 57 15           ~ 351 1
3 ACO 262 ClG 01 52 50.4 +36 08 46           ~ 677 1
4 2MAXI J0254+416 ClG 02 54 32.2 +41 35 10           ~ 304 1
5 ACO 399 ClG 02 57 56.4 +13 00 59           ~ 375 0
6 ACO 401 ClG 02 58 56.9 +13 34 56           ~ 541 0
7 ACO 3112 ClG 03 17 52.4 -44 14 35           ~ 298 1
8 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 2116 1
9 3C 84 Sy2 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 3805 3
10 ZwCl 0335+0956 ClG 03 38 35.3 +09 57 54           ~ 359 1
11 ACO 478 ClG 04 13 20.7 +10 28 35           ~ 482 0
12 Mrk 1506 Sy1 04 33 11.0956735296 +05 21 15.619461552   15.72 15.05 10.08   ~ 1934 2
13 ACO 496 ClG 04 33 30.3838 -13 14 21.584           ~ 671 2
14 RXC J0450.0+4501 ClG 04 50 03.5 +45 01 27           ~ 39 1
15 ACO 576 ClG 07 21 24.1 +55 44 20           ~ 288 1
16 ClG 0745-19 ClG 07 47 31.3 -19 17 40           ~ 366 0
17 2MASX J07473129-1917403 BiC 07 47 31.3247085936 -19 17 40.013334276   19.60       ~ 399 1
18 ClG J0834+5534 ClG 08 34 54.9 +55 34 21           ~ 23 0
19 ICRF J083454.9+553421 Sy2 08 34 54.9022011432 +55 34 21.085082256   20.75 19.45 17.180   ~ 268 2
20 ACO 754 ClG 09 08 50.1 -09 38 12           ~ 647 1
21 ACO 780 ClG 09 18 30 -12 15.7           ~ 445 0
22 ClG J0947+7623 ClG 09 47 12.9 +76 23 13           ~ 139 1
23 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1707 2
24 NAME Virgo Cluster ClG 12 26 32.1 +12 43 24           ~ 6316 0
25 NAME Vir B GrG 12 29.8 +08 00           ~ 126 0
26 M 49 Sy2 12 29 46.798 +08 00 01.48   13.21 12.17     ~ 2033 2
27 M 87 BiC 12 30 49.42338230 +12 23 28.0438581 10.16 9.59 8.63   7.49 ~ 6734 3
28 NAME Virgo A Cluster ClG 12 30.8 +12 23           ~ 128 0
29 NAME NGC 4636 Group GrG 12 42 49.5 +02 41 08           ~ 556 0
30 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1080 1
31 ACO 3526 ClG 12 48 51.8 -41 18 21           ~ 1022 2
32 ACO 1644 ClG 12 57 11.6 -17 24 34           ~ 346 1
33 ACO 1650 ClG 12 58 36.76 -01 43 34.2           ~ 280 0
34 ACO 1795 ClG 13 49 00.5 +26 35 07           ~ 1205 0
35 ACO 2029 ClG 15 10 58.7 +05 45 42           ~ 896 0
36 ACO 2052 ClG 15 16 45.5 +07 00 01           ~ 703 1
37 NAME NGC 5920 Group ClG 15 21 50.7 +07 42 18     15.13     ~ 296 0
38 ACO 2199 ClG 16 28 37.0 +39 31 28           ~ 1132 1
39 ACO 2204 ClG 16 32 45.7 +05 34 43           ~ 415 0
40 3C 401 SyG 19 40 25.2 +60 41 34   19.1       ~ 196 1
41 NAME Cyg A Cluster ClG 19 59 30.3 +40 44 11           ~ 134 0
42 ACO 2597 ClG 23 25 19.70 -12 07 27.7           ~ 519 0
43 ACO 4038 ClG 23 47 31.1 -28 12 10           ~ 328 3
44 ACO 4059 ClG 23 56 40.7 -34 40 18           ~ 368 1

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2022.09.26-09:27:00

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