DETECTION OF THE SUNYAEV-ZELDOVICH EFFECT IN ABELL-773

被引：23

作者：

GRAINGE, K ^{[1
]}

JONES, M ^{[1
]}

POOLEY, G ^{[1
]}

SAUNDERS, R ^{[1
]}

EDGE, A ^{[1
]}

机构：

[1] INST ASTRON,CAMBRIDGE CB3 0HA,CAMBS,ENGLAND

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1993年 / 265卷 / 04期

关键词：

RADIATIVE TRANSFER; GALAXIES; CLUSTERS; INDIVIDUAL; ABELL; 773; INTERGALACTIC MEDIUM; COSMIC MICROWAVE BACKGROUND; X-RAYS; GENERAL;

D O I：

10.1093/mnras/265.1.L57

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have observed the cluster Abell 773 with the Ryle Telescope at 15 GHz, and have measured a decrement in the cosmic microwave background radiation (CMB) of -590 +/- 116 mu Jy beam(-1), due to the Sunyaev-Zel'dovich (S-Z) effect. On reasonable assumptions about the structure of the cluster atmosphere, this implies a central temperature decrement of between -790 and -990 mu K. Together with the previous detection in A2218, which is significantly different from A773 as regards radiosource confusion, this result confirms the power of the method used, and emphasizes the advantages of interferometric methods over switched-beam telescopes for imaging structure in the CMB.

引用

页码：L57 / L58

页数：2

共 8 条

[1] CAVALIERE A, 1976, ASTRON ASTROPHYS, V49, P137
[2] A 1400 MHZ SKY SURVEY .1. CONFUSION-LIMITED MAPS COVERING 7H30M LESS-THAN ALPHA LESS-THAN 19H30M, -5-DEGREES LESS-THAN DELTA LESS-THAN + 82-DEGREES
CONDON, JJ
BRODERICK, JJ
[J]. ASTRONOMICAL JOURNAL, 1985, 90 (12) : 2540 - 2549
[3] CROWFORD CS, 1993, UNPUB MNRAS
[4] AN IMAGE OF THE SUNYAEV-ZELDOVICH EFFECT
JONES, M
SAUNDERS, R
ALEXANDER, P
BIRKINSHAW, M
DILLON, N
GRAINGE, K
HANCOCK, S
LASENBY, A
LEFEBVRE, D
POOLEY, G
SCOTT, P
TITTERINGTON, D
WILSON, D
[J]. NATURE, 1993, 365 (6444) : 320 - 323
[5] JONES ME, 1991, IAU C, V131, P395
[6] SAUNDERS R, 1986, HIGHLIGHTS ASTRONOMY, V7, P325
[7] TITTERINGTON DJ, 1991, P IAU C, V131, P128
[8] ZWICKY F, 1966, CATALOGUE GALAXIES C, V3

← 1 →