A maximum-likelihood approach to removing radio sources from SZ observations, with application to Abell 611
arXiv:astro-ph/0102489 · doi:10.1046/j.1365-8711.2002.05815.x
Abstract
We describe a maximum-likelihood technique for the removal of contaminating radio sources from interferometric observations of the Sunyaev-Zel'dovich (SZ) effect. This technique, based on a simultaneous fit for the radio sources and extended SZ emission, is also compared to techniques previously applied to Ryle Telescope observations and is found to be robust. The technique is then applied to new observations of the cluster Abell 611, and a decrement of -540 +/- 125 microJy/beam is found. This is combined with a ROSAT HRI image and a published ASCA temperature to give an Hubble constant estimate of 52+24-16 km/s/Mpc.
8 pages, 9 figures. Submitted to MNRAS
References in corpus (6)
- The Northern ROSAT All-Sky (NORAS) Galaxy Cluster Survey I: X-ray Properties of Clusters Detected as Extended X-ray Sources
- Deconvolution of ASCA X-ray data: II. Radial temperature and metallicity profiles for 106 galaxy clusters
- Sunyaev-Zel'dovich Effect Derived Distances to the High Redshift Clusters MS 0451.6-0305 and CL 0016+16
- Determining the Hubble Constant from Ryle Telescope observations
- Unusual Radio Properties of the BL Lac Object 0820+225
- Mapping of the SZ effect in the cluster Cl 0016+16 with the Ryle Telescope
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- Detailed SZ study of 19 LoCuSS galaxy clusters: masses and temperatures out to the virial radius
- Sunyaev-Zel'dovich observations of galaxy clusters out to the virial radius with the Arcminute Microkelvin Imager
- Preliminary Sunyaev Zel'dovich Observations of Galaxy Clusters with OCRA-p
- Physical modelling of galaxy clusters and Bayesian inference in astrophysics