2015A&A...582A..20B

Query : 2015A&A...582A..20B

2015A&A...582A..20B - Astronomy and Astrophysics, volume 582A20-20 (2015/10-1)

Inverse-Compton emission from clusters of galaxies: Predictions for ASTRO-H.

BARTELS R., ZANDANEL F. and ANDO S.

Abstract (from CDS):

The intra-cluster medium of several galaxy clusters hosts large-scale regions of diffuse synchrotron radio emission, known as radio halos and relics, which demonstrates the presence of magnetic fields and relativistic electrons in clusters. These relativistic electrons should also emit X-rays through inverse-Compton scattering off of cosmic microwave background photons. The detection of such a non-thermal X-ray component, together with the radio measurement, would permit the magnetic field to be clearly separated from the relativistic electron distribution because the inverse-Compton emission is independent of the magnetic field in the cluster. However, non-thermal X-rays have not been conclusively detected from any cluster of galaxies so far. In this paper, for the first time, we model the synchrotron and inverse-Compton emission of all clusters hosting radio halos and relics for which the spectral index can be determined. We provide constraints on the volume-average magnetic field by comparing with current X-ray measurements. We then estimate the maximum volume-average magnetic field that will allow detection of inverse-Compton hard X-rays by the ASTRO-H satellite. We find that several clusters are good targets for ASTRO-H to detect their inverse-Compton emission, in particular for what corresponds to radio relics, so we propose a list of promising targets for which ASTRO-H can test ≥1µG magnetic fields. We conclude that the already operating NuSTAR and the soon-to-be-launched ASTRO-H definitely have the potential of shedding light on the long-sought non-thermal hard-X-ray emission in clusters of galaxies.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: intracluster medium - radiation mechanisms: non-thermal - radio continuum: general - X-rays: galaxies: clusters - magnetic fields

Simbad objects: 59

goto Full paper

goto View the references in ADS

Number of rows : 59
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 ZwCl 0008+5215 ClG 00 11 37.197 +52 32 31.68           ~ 61 0
2 ACO 13 ClG 00 13 38.5 -19 30 19           ~ 107 1
3 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 1077 0
4 ACO 85 ClG 00 41 36.21 -09 19 30.4           ~ 974 0
5 ACO 115 ClG 00 55 59 +26 23.2           ~ 295 1
6 ACT-CL J0102-4915 ClG 01 02 52.50 -49 14 58.0           ~ 296 0
7 ClG 0217+70 ClG 02 17 00.0 +70 36 00           ~ 40 0
8 PLCKESZ G171.9-40.7 ClG 03 12 55 +08 22.8           ~ 58 0
9 ACO 521 ClG 04 54 08.6 -10 14 39           ~ 279 0
10 ACO 520 ClG 04 54 10.1 +02 55 38           ~ 465 0
11 ACO 545 ClG 05 32 24.4152 -11 32 35.080           ~ 102 0
12 ACO 548 ClG 05 47 01.7 -25 36 59           B8 209 2
13 ACO 3376 ClG 06 01 25.000 -39 59 51.00           ~ 334 0
14 LEDA 2195075 G 06 03 16.67547 +42 14 41.6110           ~ 23 0
15 ClG J0603.3+4214 ClG 06 03.3 +42 14           ~ 141 0
16 ClG 0657-56 ClG 06 58 26.9 -55 58 21           ~ 1077 1
17 ClG J0717+3745 ClG 07 17 36.50 +37 45 23.0           ~ 511 0
18 ACO 610 ClG 07 59 21.77 +27 08 29.2           ~ 47 0
19 ACO 665 ClG 08 30 45.2 +65 52 55           ~ 457 0
20 ACO 3411 ClG 08 41 47.7 -17 28 46           ~ 81 0
21 ACO 697 ClG 08 42 57.6 +36 21 45           ~ 277 0
22 ACO 754 ClG 09 09 14.8 -09 40 35           ~ 695 1
23 ACO 781 ClG 09 20 25.4 +30 30 07           ~ 167 0
24 ACO 1240 ClG 11 23 37.7 +43 03 28           ~ 113 0
25 ACO 1300 ClG 11 32 00.7 -19 53 34           ~ 168 0
26 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
27 MCS J1149.5+2223 ClG 11 49 35.8 +22 23 55           ~ 546 0
28 PLCKESZ G287.0+32.9 ClG 11 50 49.20 -28 04 36.5           ~ 100 0
29 ACO 1612 ClG 12 47 43.2 -02 47 32           ~ 40 0
30 NAME Coma Relic Rad 12 55 +27.2           ~ 59 0
31 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
32 ACO 1664 ClG 13 03 42.4 -24 14 44           ~ 136 0
33 BAX 199.3086-25.5133 ClG 13 14 25.4 -25 15 44           ~ 118 0
34 ACO 1758 ClG 13 32 32.1 +50 30 37           ~ 266 2
35 MCXC J1332.7+5032 ClG 13 32 44.8 +50 32 24           ~ 134 0
36 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 337 1
37 ACO S 753 ClG 14 03 35.9 -33 59 16           ~ 91 1
38 ACO 1914 ClG 14 25 57.4 +37 49 54           ~ 338 0
39 2MASX J15150305-1521537 ClG 15 14.9 -15 23           ~ 57 0
40 ACO 2048 ClG 15 15 14.11 +04 23 10.4           ~ 109 0
41 ACO 2061 ClG 15 21 19.90 +30 37 13.0           ~ 214 1
42 ACO 2063 ClG 15 23 01.8 +08 38 22           ~ 414 2
43 ACO 2163 ClG 16 15 46.1 -06 08 50           ~ 586 0
44 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
45 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 827 1
46 ACO 2219 ClG 16 40 22.1 +46 42 20           ~ 381 0
47 ACO 2256 ClG 17 03 37.5 +78 37 23           ~ 928 1
48 ACO 2255 ClG 17 12 56.0 +64 04 06           ~ 605 0
49 MCS J1752.0+4440 ClG 17 52 02.2 +44 40 38           ~ 68 0
50 ACO 2319 ClG 19 21 14.0 +43 56 57           ~ 495 1
51 ACT-CL J2003.5-2323 ClG 20 03 32.3 -23 23 30           ~ 63 0
52 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 676 1
53 ACO 2345 ClG 21 27 05.391 -12 09 07.41           ~ 151 0
54 NVSS J212709-120958 Rad 21 27 09.27 -12 10 01.5           ~ 132 1
55 ACO 2433 ClG 22 18 26 +14 01.1           ~ 13 0
56 CIZA J2242.8+5301 ClG 22 42 53.0 +53 01 05           ~ 228 0
57 ACO 2556 ClG 23 13 03.3 -21 37 40           ~ 83 0
58 ZwCl 2341+0000 ClG 23 43 40.566 +00 18 18.94           ~ 83 0
59 ACO 4038 ClG 23 47 31.1 -28 12 10           ~ 349 3

To bookmark this query, right click on this link: simbad:objects in 2015A&A...582A..20B and select 'bookmark this link' or equivalent in the popup menu