A Sunyaev-Zel'dovich map of the massive core in the luminous X-ray cluster RXJ1347-1145
| dc.creator | Pointecouteau, E. | |
| dc.creator | Giard, M. | |
| dc.creator | Benoit, A. | |
| dc.creator | Désert, F. X. | |
| dc.creator | Aghanim, N. | |
| dc.creator | Coron, N. | |
| dc.creator | Lamarre, J. M. | |
| dc.creator | Delabrouille, J. | |
| dc.date | 1999-05-12 | |
| dc.date.accessioned | 2026-07-07T02:31:34Z | |
| dc.date.available | 2026-07-07T02:31:34Z | |
| dc.description | We have mapped the Sunyaev-Zel'dovich decrement (hereafter SZ) in the direction of the most luminous X-ray cluster known to date, RXJ1347-1145, at z=0.451. This has been achieved with an angular resolution of about 23'' using the Diabolo photometer running on the IRAM 30 meter radio telescope. We present here a map of the cluster central region at 2.1mm. The Comptonization parameter towards the cluster center, $\yc=(12.7^{+2.9}_{-3.1})\times 10^{-4}$, corresponds to the deepest SZ decrement ever observed. Using the gas density distribution derived from X-ray data, this measurement implies a gas temperature $\te=16.2 \pm 3.8$ keV. The resulting total mass of the cluster is, under hydrostatic equilibrium, $M(r<1 Mpc)=(1.0 \pm 0.3) \times 10^{15} M_\odot$ for a corresponding gas fraction $f_{gas}(r<1 Mpc)=(19.5 \pm 5.8)%$. | |
| dc.description | 16 pages, 2 figures, accepted for publication in ApJ Letters | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9905139 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9905139 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/14199 | |
| dc.subject | Astrophysics | |
| dc.title | A Sunyaev-Zel'dovich map of the massive core in the luminous X-ray cluster RXJ1347-1145 | |
| dc.type | text |