Classifying LISA gravitational wave burst signals using Bayesian evidence (2009)
Feroz, Farhan, Gair, Jonathan R., Graff, Philip, Hobson, Michael P, Lasenby, Anthony
We consider the problem of characterisation of burst sources detected with the Laser Interferometer Space Antenna (LISA) using the multi-modal nested sampling algorithm, MultiNest. We use MultiNest...
Scaife, Anna M. M., Green, David A., Pooley, Guy G., Davies, Matthew L., Franzen, Thomas M. O., Grainge, Keith J. B., ...
We present 25 arcsecond resolution radio images of five Lynds Dark Nebulae (L675, L944, L1103, L1111 & L1246) at 16 GHz made with the Arcminute Microkelvin Imager (AMI) Large Array. These objects...
Brechet, Sylvain D., Hobson, Michael P., Lasenby, Anthony N.
An analysis of adiabatic perturbations of a perfect fluid is performed to first-order about a general FLRW background using the 1+3 covariant and gauge-invariant formalism. The analog of the...
VSA Observations of the Anomalous Microwave Emission in the Perseus Region (2009)
Tibbs, Christopher T., Watson, Robert A., Dickinson, Clive, Davies, Rodney D., Davis, Richard J., Del Burgo, Carlos, ...
The dust feature G159.6--18.5 in the Perseus region has previously been observed with the COSMOSOMAS experiment \citep{Watson:05} on angular scales of $\approx$ 1$^{\circ}$, and was found to exhibit...
AMI observations of Lynds Dark Nebulae: further evidence for anomalous cm-wave emission (2009)
Hurley-Walker, Natasha, Green, David A., Davies, Matthew L., Franzen, Thomas M. O., Grainge, Keith J. B., ...
Observations at 14.2 to 17.9 GHz made with the AMI Small Array towards fourteen Lynds Dark Nebulae with a resolution of 2' are reported. These sources are selected from the SCUBA observations of...
Franzen, Thomas M. O., Davies, Matthew L., Davies, Rod D., Davis, Richard J., Feroz, Farhan, Genova-Santos, Ricardo, ...
Using the Arcminute Microkelvin Imager (AMI) at 16 GHz and the Very Small Array (VSA) at 33 GHz to make follow-up observations of sources in the New Extragalactic WMAP Point Source Catalogue, we have...
Davies, Matthew L., Franzen, Thomas M. O., Davies, Rod D., Davis, Richard J., Feroz, Farhan, Genova-Santos, Ricardo, ...
We present follow-up observations of 97 point sources from the Wilkinson Microwave Anisotropy Probe (WMAP) 3-year data, contained within the New Extragalactic WMAP Point Source (NEWPS) catalogue...
Use of the MultiNest algorithm for gravitational wave data analysis (2009)
Feroz, Farhan, Gair, Jonathan R., Hobson, Michael P., Porter, Edward K.
We describe an application of the MultiNest algorithm to gravitational wave data analysis. MultiNest is a multimodal nested sampling algorithm designed to efficiently evaluate the Bayesian evidence...
Cold Dark Matter Isocurvature Perturbations: Constraints and Model Selection (2009)
Sollom, Ian, Challinor, Anthony, Hobson, Michael P.
We use CMB (WMAP and ACBAR), large scale structure (SDSS luminous red galaxies) and supernova (SNLS) data to constrain the possible contribution of CDM isocurvature modes to the primordial...
G64.5+0.9, a new shell supernova remnant with unusual central emission (2009)
Davies, Matthew L., Franzen, Thomas M. O., Grainge, Keith, Green, D. A., Hobson, Michael P., ...
We present observations between 1.4 and 18 GHz confirming that G64.5+0.9 is new Galactic shell supernova remnant, using the Very Large Array and the Arcminute Microkelvin Imager. The remnant is a...
AMI observations of northern supernova remnants at 14-18 GHz (2009)
Hurley-Walker, Natasha, Scaife, A. M. M., Green, D. A., Davies, Matthew L., Grainge, Keith, Hobson, Michael P., ...
We present observations between 14.2 and 17.9 GHz of 12 reported supernova remnants (SNRs) made with the Arcminute Microkelvin Imager Small Array (AMI SA). In conjunction with data from the...
An anisotropic, non-singular early universe model leading to a realistic cosmology (2008)
Dechant, Pierre-Philippe, Lasenby, Anthony N., Hobson, Michael P.
We present a novel cosmological model in which scalar field matter in a biaxial Bianchi IX geometry leads to a non-singular `pancaking' solution: the hypersurface volume goes to zero instantaneously...
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 cosmic microwave background (CMB) experiments. Using data from the Very Small Array (VSA), we describe procedures which will...
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....
R. Bel'en Barreiro, Patricio Vielva, Michael P. Hobson, Anthony N. Lasenby, Jos'e L. Sanz
Reconstructing the microwave sky using a combined maximum-entropy and mexican hat wavelet analysis
Simulations of astronomical imaging phased arrays (2007)
Saklatvala, George, Withington, Stafford, Hobson, Michael P.
We describe a theoretical procedure for analyzing astronomical phased arrays with overlapping beams, and apply the procedure to simulate a simple example. We demonstrate the effect of overlapping...
Saklatvala, George, Hobson, Michael P., Withington, Stafford
Focal plane arrays of bolometers are increasingly employed in astronomy at far--infrared to millimetre wavelengths. The focal plane fields and the detectors are both partially coherent in these...
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...
Optical Physics of Imaging and Interferometric Phased Arrays (2006)
Withington, Stafford, Saklatvala, George, Hobson, Michael P.
Microwave, submillimetre-wave, and far-infrared phased arrays are of considerable importance for astronomy. We consider the behaviour imaging phased arrays and interferometric phased arrays from a...
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...
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...
Constraining the shape of the CMB: a Peak-by-Peak analysis (2002)
Odman, Carolina J., Melchiorri, Alessandro, Hobson, Michael P., Lasenby, Anthony N.
The recent measurements of the power spectrum of Cosmic Microwave Background anisotropies are consistent with the simplest inflationary scenario and big bang nucleosynthesis constraints. However,...
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...
Van Leeuwen, Floor, Challinor, Anthony D., Mortlock, Daniel J., Ashdown, Mark A. J., Hobson, Michael P., Lasenby, Anthony N., ...
We present a harmonic model for the data analysis of an all-sky cosmic microwave background survey, such as Planck, where the survey is obtained through ring-scans of the sky. In this model,...
Harmonic analysis of cosmic microwave background data II: from ring-sets to the sky (2001)
Challinor, Anthony D., Mortlock, Daniel J., Van Leeuwen, Floor, Lasenby, Anthony N., Hobson, Michael P., Ashdown, Mark A. J., ...
Despite the fact that the physics of the cosmic microwave background anisotropies is most naturally expressed in Fourier space, pixelised maps are almost always used in the analysis and simulation of...
Analysis of cosmic microwave background data on an incomplete sky (2000)
Mortlock, Daniel J., Challinor, Anthony D., Hobson, Michael P.
Measurement of the angular power spectrum of the cosmic microwave background is most often based on a spherical harmonic analysis of the observed temperature anisotropies. Even if all-sky maps are...
The observability of secondary doppler peaks (1996)
By proposing a statistic for the detection of secondary (Doppler) peaks in the CMBR power spectrum, the significance level at which such peaks may be detected are computed for a large range of model...