1995A&A...302L...9B

Query : 1995A&A...302L...9B

1995A&A...302L...9B - Astronomy and Astrophysics, volume 302L9-12 (1995/10-1)

Search for X-ray filaments between galaxy clusters.

BRIEL U.G. and HENRY J.P.

Abstract (from CDS):

Clusters of galaxies are often located at the intersections of long filaments of galaxies, and numerical simulations of structure formation indicate that these filaments contain not only dark matter and galaxies but also moderately hot gas. Hence the filaments might be visible in X-rays if they contain sufficiently dense gas. Data from the ROSAT All-Sky Survey were used to search for X-ray emission from such filaments connecting clusters. We do not find any filament emission. The 2-sigma upper limit for a 1keV plasma is 3.9x10–16erg/cm2/s/arcmin2 in the 0.5 to 2.0keV energy band. This upper limit yields an upper limit on the filament electron density comparable to that found in some large scale structure models. We conclude that the new extended cluster component, found in a region of the ROSAT All-Sky Survey by cross-correlating its background fluctuations with the Abell cluster catalogue, is not confined to filaments connecting clusters.

Abstract Copyright: ∼

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

Simbad objects: 54

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Number of rows : 54
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 ACO 945 ClG 10 15 40 +69 05.1           ~ 18 0
2 ACO 975 ClG 10 22 39 +64 37.8           ~ 22 0
3 ACO 981 ClG 10 24 19.1 +68 04 56           ~ 29 0
4 ACO 1006 ClG 10 27 37 +67 02.7           ~ 14 0
5 ACO 1014 ClG 10 29 01 +65 26.6           ~ 14 0
6 ACO 1017 ClG 10 30 06 +65 07.6           ~ 9 0
7 ACO 1029 ClG 10 35 24 +77 19.5           ~ 13 0
8 ACO 1046 ClG 10 37 33 +67 57.4           ~ 12 0
9 ACO 1061 ClG 10 40 47 +67 12.3           ~ 12 0
10 ACO 1123 ClG 10 56 41 +75 31.0           ~ 25 0
11 ACO 1150 ClG 11 06 16 +73 41.8           ~ 13 0
12 ACO 1221 ClG 11 19 51 +62 40.6           ~ 14 0
13 ACO 1249 ClG 11 25 23 +68 01.5           ~ 12 0
14 ACO 1254 ClG 11 27 41.1809 +71 03 34.580           ~ 50 0
15 ACO 1289 ClG 11 31 37 +60 45.4           ~ 13 1
16 ACO 1302 ClG 11 33 12.02 +66 22 26.9           ~ 81 0
17 ACO 1297 ClG 11 33 43 +76 13.4           ~ 14 0
18 ACO 1301 ClG 11 33 57.0 +75 06 58           ~ 18 0
19 ACO 1315 ClG 11 36 08 +71 55.4           ~ 13 0
20 ACO 1322 ClG 11 36 59 +63 13.4           ~ 14 0
21 ACO 1329 ClG 11 38 35 +71 07.4           ~ 21 0
22 ACO 1331 ClG 11 38 59.5 +63 35 21           ~ 18 0
23 ACO 1335 ClG 11 40 07 +68 08.4           ~ 16 0
24 ACO 1366 ClG 11 44 44.72 +67 24 51.9           ~ 56 0
25 ACO 1382 ClG 11 48 21 +71 26.3           ~ 35 0
26 ACO 1381 ClG 11 48 30 +75 13.3           ~ 16 0
27 ACO 1402 ClG 11 52 32 +60 25.3           ~ 16 1
28 ACO 1406 ClG 11 53 05.3 +67 53 51           ~ 23 0
29 ACO 1432 ClG 11 59 40 +68 06.3           ~ 12 0
30 ACO 1446 ClG 12 01 54.77 +58 01 40.7           ~ 104 1
31 ACO 1467 ClG 12 05 23 +72 36.3           ~ 11 0
32 ACO 1477 ClG 12 08 53 +64 04.3           ~ 20 0
33 ACO 1496 ClG 12 13 35.838 +59 21 10.99           ~ 41 0
34 ACO 1518 ClG 12 19 09.33 +63 31 42.1           ~ 18 0
35 ACO 1528 ClG 12 22 53 +58 54.4           ~ 13 0
36 ACO 1536 ClG 12 24 51 +77 07.4           ~ 13 0
37 ACO 1559 ClG 12 33 07.55 +67 08 47.3           ~ 57 0
38 ACO 1561 ClG 12 33 08 +69 21.5           ~ 9 0
39 ACO 1566 ClG 12 35 12.60 +64 22 41.3           ~ 26 0
40 ACO 1597 ClG 12 41 03 +72 13.6           ~ 18 0
41 ACO 1617 ClG 12 47 35 +59 11.6           ~ 16 0
42 ACO 1621 ClG 12 48 39.55 +62 40 45.7           ~ 26 0
43 ACO 1640 ClG 12 54 43.6 +62 33 47           ~ 22 0
44 ACO 1646 ClG 12 55 58.80 +62 08 48.4           ~ 24 0
45 ACO 1674 ClG 13 03 56.5 +67 31 04           ~ 54 0
46 ACO 1687 ClG 13 09 53.8 +58 24 33           ~ 12 0
47 ACO 1701 ClG 13 13 59.06 +60 59 15.5           ~ 17 0
48 ACO 1707 ClG 13 15 38.2 +58 14 30           ~ 16 0
49 ACO 1731 ClG 13 22 43 +58 10.4           ~ 27 0
50 ACO 1764 ClG 13 34 41 +59 54.7           ~ 19 0
51 ACO 1777 ClG 13 39 21 +71 36.8           ~ 11 0
52 ACO 1851 ClG 13 59 46.1371 +72 07 16.307           ~ 24 0
53 ACO 1872 ClG 14 09 17.8 +61 58 12           ~ 16 0
54 ACO 1918 ClG 14 25 22.7 +63 11 14           ~ 71 0

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