Erratum: “Interferometric Imaging of the Sunyaev-Zeldovich Effect at 30 GHz” (ApJ, 456, L75 [1996])

Abstract. Deep Very Large Array radio observations confirm the presence of halo and relic sources in six clusters of galaxies (A115, A520, A773, A1664, A2254, A2744) where a wide diffuse emission was previously found in the NRAO VLA Sky Survey. New images at 1.4 GHz of these six clusters of galaxies are presented and X-ray data obtained from the ROSAT archive are analyzed. The properties of clusters hosting radio halos and relics are analyzed and discussed. A correlation between the halo radio power and the cluster gravitational mass is presented.

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“…The temperature decrement detected toward A773 at 28.7 GHz is −575 < ∆T < −760 µK (Carlstrom et al 1996).…”

Section: A773mentioning

confidence: 88%

Radio and X-ray diffuse emission in six clusters of galaxies

Govoni

Feretti

Giovannini

et al. 2001

A&A

229

321

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“…More recently, excellent imaging data on the clusters CL 0016+16 and Abell 773 has been published by Carlstrom, Joy & Grego (1996). These authors used the Owens Valley Millimeter Array ( O VMMA) at 1 cm: by equipping an array designed for operation at 3 mm and shorter wavelengths with cm-wave receivers, they were assured of accurate pointing and a relatively large primary beam, so that the interferometer should not over-resolve the Sunyaev-Zel'dovich e ects on short baselines.…”

Section: { 5 5 {mentioning

confidence: 99%

“…23.| An interferometric map of CL 0016+16, from Carlstrom et al (1996), superimposed on a grey-scale representation of the X-ray emission of the cluster (from the ROSAT PSPC). The radio data on which this image is based were taken with the Owens Valley 1656, 2256, 478, 2142, 1413, 2163, 2218, and 665 and CL 0016+16 (Herbig et al 1995Myers et al 1997;Holzapfel et al 1997a;McHardy et al 1990;Birkinshaw & Hughes 1994;Jones 1995;and Hughes & Birkinshaw 1996).…”

Section: Quasars and The Sunyaev-zel'dovich E Ectsmentioning

confidence: 99%

The Sunyaev–Zel'dovich effect

1999

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The Sunyaev-Zel'dovich e ect causes a change in the apparent brightness of the Cosmic Microwave Background Radiation towards a cluster of galaxies or any other reservoir of hot plasma. Measurements of the e ect provide distinctly di erent information about cluster properties than X-ray imaging data, while combining X-ray and Sunyaev-Zel'dovich e ect data leads to new insights into the structures of cluster atmospheres. The e ect is redshift-independent, and so provides a unique probe of the structure of the Universe on the largest scales. The present review discusses the theory of the Sunyaev-Zel'dovich e ect and collects published results for many clusters, presents the overall conclusions that may bedrawn from the detections so far, and discusses the prospects for future research on the Sunyaev-Zel'dovich e ects.Subject headings: Sunyaev-Zel'dovich E ect; Clusters; Microwave Background Radiation Astrophysical ContextCompton scattering is one of the major physical processes that couples matter and radiation. Its importance is often stressed in highly relativistic environments where large energy transfers occur: for example, in the synchrotron self-Compton process that may beresponsible for much of the X-radiation from active galactic nuclei (e.g., Fabian et al. 1986). However, the Compton process also has observable consequences in low-energy environments, where small energy transfers occur. The Sunyaev-Zel'dovich e ect, which arises from the scattering of electrons in clusters of galaxies on the cosmic microwave 1 Also Smithsonian Institution Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138, USA { 2 { background radiation eld, is perhaps the most important astrophysical example. The e ect provides a cosmological probe, it has been used to measure the properties of gas in clusters of galaxies, and it has been discussed as a means of measuring the motions of clusters of galaxies and hence studying the evolution of structure in the Universe.The purpose of this review is to provide a comprehensive introduction to the SunyaevZel'dovich e ect. I aim to provide both a theoretical treatment that can befollowed by non-specialists, and an introduction to the observation of the e ect with a critical review of data in the literature. The latter is more di cult today than it would have been ve years ago because of the rapid increase in the number of papers on the Sunyaev-Zel'dovich e ect, and the improvement i n t h e quality o f t h e results that are being gained.

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“…Several millimetre and radio detections towards a dozen of clusters have recently been obtained using various techniques [8,9,13,29,42,25]. These results, which are compatible with the expected brightness decrement, constitute a direct evidence for the SZ effect and have profound cosmological importance:…”

Section: Introductionmentioning

confidence: 52%