Context: Fourier transform (or lag) correlators in radio interferometers can serve as an efficient means of synthesising spectral channels. However aliasing corrupts the edge channels so they usually...
Radio source calibration for the VSA and other CMB instruments at around 30 GHz (2008)
Hafez, Yaser A., Davies, Rod D., Davis, Richard J., Dickinson, Clive, Battistelli, Elia S., Blanco, Francisco, ...
Accurate calibration of data is essential for the current generation of CMB experiments. Using data from the Very Small Array (VSA), we describe procedures which will lead to an accuracy of 1 percent...
Genova-Santos, Ricardo, Rubino-Martin, Jose Alberto, Rebolo, Rafael, Battye, Richard A., Blanco, Francisco, Davies, Rod D., ...
We present interferometric imaging at 33 GHz, with the new superextended configuration of the Very Small Array (VSA), of a very deep decrement in the cosmic microwave background (CMB) temperature....
Scaife, Anna, Green, David A., Battye, Richard A., Davies, Rod D., Davis, Richard J., Dickinson, Clive, ...
We present results from observations made at 33 GHz with the Very Small Array (VSA) telescope towards potential candidates in the Galactic plane for spinning dust emission. In the cases of the...
A 6-12 GHz Analogue Lag-Correlator for Radio Interferometry (2007)
Holler, Christian M., Kaneko, Tak, Jones, Michael E., Grainge, Keith, Scott, Paul
Aims: We describe a 6-12 GHz analogue correlator that has been developed for use in radio interferometers. Methods: We use a lag-correlator technique to synthesis eight complex spectral channels. Two...
Non-Gaussianity in the Very Small Array CMB maps with Smooth-Goodness-of-fit tests (2006)
Rubino-Martin, Jose Alberto, Aliaga, Antonio M., Barreiro, R. B., Battye, Richard A., Carreira, Pedro, Cleary, Kieran, ...
(Abridged) We have used the Rayner & Best (1989) smooth tests of goodness-of-fit to study the Gaussianity of the Very Small Array (VSA) data. Out of the 41 published VSA individual pointings...
A VSA search for the extended Sunyaev-Zel'dovich Effect in the Corona Borealis Supercluster (2005)
Genova-Santos, Ricardo, Rubino-Martin, Jose Alberto, Rebolo, Rafael, Cleary, Kieran, Davies, Rod D., Davis, Richard J., ...
We present interferometric imaging at 33 GHz of the Corona Borealis supercluster, using the extended configuration of the Very Small Array. A total area of 24 deg^2 has been imaged, with an angular...
Source subtraction for the extended Very Small Array and 33-GHz source count estimates (2004)
Cleary, Kieran A., Taylor, Angela C., Waldram, Elizabeth, Battye, Richard A., Dickinson, Clive, Davies, Rod D., ...
We describe the source subtraction strategy and observations for the extended Very Small Array, a CMB interferometer operating at 33 GHz. A total of 453 sources were monitored at 33 GHz using a...
Very Small Array observations of the Sunyaev-Zel'dovich effect in nearby galaxy clusters (2004)
Lancaster, Katy, Genova-Santos, Ricardo, Falcon, Nelson, Grainge, Keith, Gutierrez, Carlos, Kneissl, Ruediger, ...
We present VSA observations (~34GHz) on scales ~20 arcmin towards a complete, X-ray-flux-limited sample of seven clusters at redshift z
High sensitivity measurements of the CMB power spectrum with the extended Very Small Array (2004)
Dickinson, Clive, Battye, Richard A., Cleary, Kieran, Davies, Rod D., Davis, Richard J., Genova-Santos, Ricardo, ...
We present deep Ka-band ($\nu \approx 33$ GHz) observations of the CMB made with the extended Very Small Array (VSA). This configuration produces a naturally weighted synthesized FWHM beamwidth of...
Cosmological parameter estimation using Very Small Array data out to l=1500 (2004)
Rebolo, Rafael, Battye, Richard A., Carreira, Pedro, Cleary, Kieran, Davies, Rod D., Davis, Richard J., ...
We estimate cosmological parameters using data obtained by the Very Small Array (VSA) in its extended configuration, in conjunction with a variety of other CMB data and external priors. Within the...
Estimating the bispectrum of the Very Small Array data (2004)
Smith, Sarah, Rocha, Graca, Challinor, Anthony, Battye, Richard A., Carreira, Pedro, Cleary, Kieran, ...
We estimate the bispectrum of the Very Small Array data from the compact and extended configuration observations released in December 2002, and compare our results to those obtained from Gaussian...
Cosmological parameter estimation using Very Small Array data out to l? = 1500 (2004)
Rebolo, Rafael, Battye, Richard A., Carreira, Pedro, Cleary, Kieran, Davies, Rod D., Davis, Richard J., ...
Searching for non-Gaussianity in the VSA data (2003)
Savage, Richard, Battye, Richard A., Carreira, Pedro, Cleary, Kieran, Davies, Rod D., Davis, Richard J., ...
We have tested Very Small Array (VSA) observations of three regions of sky for the presence of non-Gaussianity, using high-order cumulants, Minkowski functionals, a wavelet-based test and a Bayesian...
The CMB power spectrum out to l=1400 measured by the VSA (2002)
Grainge, Keith, Carreira, Pedro, Cleary, Kieran, Davies, Rod D., Davis, Richard J., Dickinson, Clive, ...
We have observed the cosmic microwave background (CMB) in three regions of sky using the Very Small Array (VSA) in an extended configuration with antennas of beamwidth 2 degrees at 34 GHz. Combined...
Cosmological parameter estimation and Bayesian model comparison using VSA data (2002)
Slosar, Anze, Carreira, Pedro, Cleary, Kieran, Davies, Rod D., Davis, Richard J., Dickinson, Clive, ...
We constrain the basic comological parameters using the first observations by the Very Small Array (VSA) in its extended configuration, together with existing cosmic microwave background data and...
First results from the Very Small Array -- IV. Cosmological parameter estimation (2002)
Rubino-Martin, Jose Alberto, Rebolo, Rafael, Carreira, Pedro, Cleary, Kieran, Davies, Rod D., Davis, Richard J., ...
We investigate the constraints on basic cosmological parameters set by the first compact-configuration observations of the Very Small Array (VSA), and other cosmological data sets, in the standard...
First results from the Very Small Array -- I. Observational methods (2002)
Watson, Robert A., Carreira, Pedro, Cleary, Kieran, Davies, Rod D., Davis, Richard J., Dickinson, Clive, ...
The Very Small Array (VSA) is a synthesis telescope designed to image faint structures in the cosmic microwave background on degree and sub-degree angular scales. The VSA has key differences from...
First results from the Very Small Array -- III. The CMB power spectrum (2002)
Scott, Paul F., Carreira, Pedro, Cleary, Kieran, Davies, Rod D., Davis, Richard, Dickinson, Clive, ...
We present the power spectrum of the fluctuations in the cosmic microwave background detected by the Very Small Array (VSA) in its first season of observations in its compact configuration. We find...
First results from the Very Small Array -- II. Observations of the CMB (2002)
Taylor, Angela C., Carreira, Pedro, Cleary, Kieran, Davies, Rod D., Davis, Richard J., Dickinson, Clive, ...
We have observed the cosmic microwave background temperature fluctuations in eight fields covering three separated areas of sky with the Very Small Array at 34 GHz. A total area of 101 square degrees...
Detection of a CMB decrement towards a cluster of mJy radiosources (2001)
Cotter, Garret, Buttery, Helen J., Rawlings, Steve, Croft, Steve, Hill, Gary J., Gay, Pamela, ...
We present the results of radio, optical and near-infrared observations of the field of TOC J0233.3+3021, a cluster of milliJansky radiosources from the TexOx Cluster survey. In an observation of...
Kneissl, Ruediger, Jones, Michael E., Saunders, Richard, Eke, Vincent R., Lasenby, Anthony N., Grainge, Keith, ...
We discuss prospects for cluster detection via the Sunyaev-Zel'dovich (SZ) effect in a blank field survey with the proposed interferometer array, the Arcminute MicroKelvin Imager (AMI). Clusters of...
H0 from an orientation-unbiased sample of SZ and X-ray clusters (2001)
Jones, Michael E., Edge, Alastair C., Grainge, Keith, Grainger, William F., Kneissl, Ruediger, Pooley, G. G., ...
We have observed the Sunyaev-Zel'dovich effect in a sample of five moderate-redshift clusters with the Ryle Telescope, and used them in conjunction with X-ray imaging and spectral data from ROSAT and...
Grainger, William F., Das, Rhiju, Grainge, Keith, Jones, Michael E., Kneissl, Ruediger, Pooley, G. G., ...
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...
The radio source counts at 15 GHz and their implications for cm-wave CMB imaging (2001)
Taylor, Angela C., Grainge, Keith, Jones, Michael E., Pooley, G. G., Saunders, Richard, Waldram, E. M.
We present the preliminary results of a new survey of radio sources using the Ryle telescope at 15.2 GHz. This is the highest frequency at which a survey has been done that is relevant to the issue...
Baker, Joanne C., Grainge, Keith, Hobson, M. P., Jones, Michael E., Kneissl, R., Lasenby, A. N., ...
We describe observations at frequencies near 15 GHz of the second 2x2 degree field imaged with the Cambridge Cosmic Anisotropy Telescope (CAT). After the removal of discrete radio sources, structure...
Determining the Hubble Constant from Ryle Telescope observations (1999)
Grainge, Keith, Jones, Michael E., Pooley, Guy, Saunders, Richard, Edge, Alastair, Kneissl, Rudiger
We describe our algorithm for measuring the Hubble constant from Ryle Telescope (RT) interferometric observations of the Sunyaev-Zel'dovich (SZ) effect from a galaxy cluster and observation of the...
A measurement of H_0 from Ryle Telescope, ASCA and ROSAT observations of Abell 773 (1999)
Saunders, Richard, Kneissl, Ruediger, Grainge, Keith, Grainger, William F., Jones, Michael E., Maggi, Alessia, ...
We present new Ryle Telescope (RT) observations of the Sunyaev Zel'dovich (SZ) decrement from the cluster Abell 773. The field contains a number of faint radio sources that required careful...
Detection of a CMB decrement towards the z = 3.8 quasar pair PC1643+4631A&B (1996)
Jones, Michael E., Saunders, Richard, Baker, Joanne C., Cotter, Garret, Edge, Alastair, Grainge, Keith, ...
In a 15-GHz Ryle-Telescope observation of PC1643+4631 A & B, a pair of quasars at redshifts z = 3.79 and 3.83 separated by 198 arcsec on the sky, we find a decrement in the cosmic microwave...
Optical and infrared investigation towards the z=3.8 quasar pair PC1643+4631A&B (1996)
Saunders, Richard, Baker, Joanne C., Bremer, Malcolm N., Bunker, Andrew J., Cotter, Garret, Eales, Steve, ...
In a companion paper (Paper I: Jones et al. 1996) we report the discovery of a cosmic microwave background decrement, indicative of a distant cluster with mass ~10^{15} solar masses, towards the...
Measuring the Hubble constant via the Sunyaev-Zel'dovich effect. (1996)
Thesis (Ph. D.)--University of Cambridge, 1996.