Radio Confusion on Cluster Sunyaev-Zel'dovich Effect
| dc.creator | Lin, Huichun | |
| dc.creator | Chiueh, Tzihong | |
| dc.creator | Wu, Xiang-Ping | |
| dc.date | 2002-02-08 | |
| dc.date.accessioned | 2026-07-25T11:42:53Z | |
| dc.description | We examine the expected radio confusion on the thermal Sunyaev-Zel'dovich (SZ) effect of galaxy clusters at 28.5 GHz and 90 GHz based on the cluster radio luminosity function (CRLF) at 1.4 GHz. With the observationally determined spectral index ($α$, where $S_{\rmν}\proptoν^{-α}$) distribution, instead of a single average index $<α>$, we convert the cluster radio luminosity function at 1.4 GHz to the high frequency ones and estimate the total radio flux in a cluster. At 28.5 GHz, radio confusion is up to 10~100% for small clusters ($M\sim 2\times 10^{14}M_{\odot}$) below redshift z=1, with more severe confusion for smaller and lower redshift clusters. By contrast, at 90 GHz the confusion is less than 10% for small clusters even at low redshifts. | |
| dc.description | 19 pages, 6 figures | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0202174 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0202174 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/5003 | |
| dc.subject | Astrophysics | |
| dc.title | Radio Confusion on Cluster Sunyaev-Zel'dovich Effect | |
| dc.type | text |