Anomalous Microwave Emission from the HII region RCW175 (2008)
Dickinson, C., Davies, R. D., Allison, J. R., Bond, J. R., Casassus, S., Cleary, K., ...
We present evidence for anomalous microwave emission in the RCW175 \hii region. Motivated by 33 GHz $13\arcmin$ resolution data from the Very Small Array (VSA), we observed RCW175 at 31 GHz with the...
A shrinking Compact Symmetric Object: J11584+2450? (2008)
Tremblay, S. E., Taylor, G. B., Helmboldt, J. F., Fassnacht, C. D., Pearson, T. J.
We present multi-frequency multi-epoch Very Long Baseline Array (VLBA) observations of J11584+2450. These observations clearly show this source, previously classified as a core-jet, to be a compact...
Britzen, S., Vermeulen, R. C., Campbell, R. M., Taylor, G. B., Pearson, T. J., Readhead, A. C. S., ...
Context: This is the second of a series of papers presenting VLBI observations of the 293 Caltech-Jodrell Bank Flat-Spectrum (hereafter CJF) sources and their analysis. Aims: To obtain a consistent...
Britzen, S., Vermeulen, R. C., Taylor, G. B., Campbell, R. M., Pearson, T. J., Readhead, A. C. S., ...
Context: This is the first of a series of papers presenting VLBI observations of the 293 Caltech-Jodrell Bank Flat-Spectrum (hereafter CJF) sources and their analysis. Aims: One of the major goals of...
Characteristics of EGRET Blazars in the VLBA Imaging and Polarimetry Survey (VIPS) (2007)
Taylor, G. B., Healey, S. E., Helmboldt, J. F., Tremblay, S., Fassnacht, C. D., Walker, R. C., ...
We examine the radio properties of EGRET-detected blazars observed as part of the VLBA Imaging and Polarimetry Survey (VIPS). VIPS has a flux limit roughly an order of magnitude below the MOJAVE...
A centimetre-wave excess over free-free emission in planetary nebulae (2007)
Casassus, S., Dickinson, C., Pearson, T. J.
We report a centimetre-wave (cm-wave, 5-31GHz) excess over free-free emission in PNe. Accurate 31 and 250GHz measurements show that the 31GHz flux densities in our sample are systematically higher...
A centimetre-wave excess over free-free emission in planetary nebulae (2007)
Casassus, S., Dickinson, C., Pearson, T. J., Readhead, A. C.
This paper has been withdrawn by the author(s), as it is superseded by 0708.2385.
CBI limits on 31 GHz excess emission in southern HII regions (2007)
Dickinson, C., Davies, R. D., Bronfman, L., Casassus, S., Davis, R. J., Pearson, T. J., ...
We have mapped four regions of the southern Galactic plane at 31 GHz with the Cosmic Background Imager. From the maps, we have extracted the flux densities for six of the brightest \hii regions in...
Implications of the cosmic background imager polarization data (2007)
Sievers, J. L., Achermann, C., Bond, J. R., Bronfman, L., Bustos, R., Contaldi, C. R., ...
Publicación ISI
Implications of the cosmic background imager polarization data (2007)
Sievers, J. L., Achermann, C., Bond, J. R., Bronfman, Leonardo, Bustos, R., Contaldi, C. R., ...
Publicación ISI
The VLBA Imaging and Polarimetry Survey at 5 GHz (2006)
Helmboldt, J. F., Taylor, G. B., Tremblay, S., Fassnacht, C. D., Walker, R. C., Myers, S. T., ...
We present the first results of the VLBA Imaging and Polarimetry Survey (VIPS), a 5 GHz VLBI survey of 1,127 sources with flat radio spectra. Through automated data reduction and imaging routines, we...
Deep spectroscopy of 9C J1503+4528: a very young CSS radio source at z=0.521 (2006)
Inskip, K. J., Lee, D., Cotter, Garret, Pearson, T. J., Readhead, A. C. S., Bolton, R. C., ...
9C J1503+4528 is a very young CSS radio galaxy, with an age of order 10^4 years. This source is therefore an ideal laboratory for the study ofthe intrinsic host galaxy/IGM properties, interactions...
An upper limit on anomalous dust emission at 31 GHz in the diffuse cloud [LPH96]201.663+1.643 (2006)
Dickinson, C., Casassus, S., Pineda, J. L., Pearson, T. J., Readhead, A. C. S., Davies, R. D.
[LPH96]201.663+1.643, a diffuse H{\sc ii} region, has been reported to be a candidate for emission from rapidly spinning dust grains. Here we present Cosmic Background Imager (CBI) observations at...
A New Component in the Radio Continua of PNe (2005)
Casassus, S., Nyman, L.-Å., Pearson, T. J., Readhead, A. C.
A byproduct of experiments designed to map the CMB is the recent detection of a new component of foreground galactic emission. The anomalous foreground at 10–30 GHz, unexplained by traditional...
Morphological analysis of the cm-wave continuum in the dark cloud LDN1622 (2005)
Casassus, S., Cabrera, G., Forster, F., Pearson, T. J., Readhead, A. C. S., Dickinson, C.
The spectral energy distribution of the dark cloud LDN1622, as measured by Finkbeiner using WMAP data, drops above 30GHz and is suggestive of a Boltzmann cutoff in grain rotation frequencies,...
Implications of the Cosmic Background Imager Polarization Data (2005)
Sievers, J. L., Achermann, C., Bond, J. R., Bronfman, L., Bustos, R., Contaldi, C. R., ...
We present new measurements of the power spectra of the E-mode of CMB polarization, the temperature T, the cross-correlation of E and T, and upper limits on the B-mode from 2.5 years of dedicated...
Deep spectroscopy of a young radio source at z=0.521 (2005)
Inskip, K. J., Lee, D., Cotter, Garret, Readhead, A. C. S., Pearson, T. J.
9C J1503+4528 is a very young CSS radio galaxy, with an age of order 10^4 years. This source is an ideal laboratory for the study of the intrinsic host galaxy/IGM properties, radio source...
CLASS B0631+519: Last of the CLASS lenses (2005)
York, T., Jackson, N., Browne, I. W. A., Koopmans, L. V. E., McKean, J. P., Norbury, M. A., ...
We report the discovery of a new gravitational lens system from the CLASS survey, CLASS B0631+519. VLA, MERLIN and VLBA observations show a doubly-imaged radio core, a doubly-imaged lobe and a second...
VLBA Imaging Polarimetry of Active Galactic Nuclei - An Automated Approach (2005)
Taylor, G. B., Fassnacht, C. D., Sjouwerman, L. O., Myers, S. T., Ulvestad, J. S., Walker, R. C., ...
We present full polarization Very Long Baseline Array (VLBA) observations at 5 GHz and 15 GHz of 24 compact active galactic nuclei (AGN). These sources were observed as part of a pilot project to...
Rajguru, N., Myers, S. T., Battye, R. A., Bond, J. Richard, Cleary, K., Contaldi, C. R., ...
We present coincident observations of the Cosmic Microwave Background (CMB) from the Very Small Array (VSA) and Cosmic Background Imager (CBI) telescopes. The consistency of the full datasets is...
Cartwright, J. K., Pearson, T. J., Readhead, A. C. S., Shepherd, M. C., Sievers, J. L., Taylor, G. B.
We report upper limits on the polarization of the CMBR as measured with the Cosmic Background Imager, a 13 element interferometer that operates in the 26-36 GHz band and is sited on Llano de...
CLASS B2108+213: A new wide separation gravitational lens system (2004)
McKean, J. P., Browne, I. W. A., Jackson, N. J., Koopmans, L. V. E., Norbury, M. A., Treu, T., ...
We present observations of CLASS B2108+213, the widest separation gravitational lens system discovered by the Cosmic Lens All-Sky Survey. Radio imaging using the VLA at 8.46 GHz and MERLIN at 5 GHz...
Observations of Pearson-Readhead Sources Using VSOP and the EVN (2004)
Tingay, S., Preston, R. A., Piner, B. G., Lister, M .L., Pearson, T. J., Readhead, A. C. S., ...
We present high resolution images, preliminary analysis, and interpretation from VSOP space VLBI observations of Pearson-Readhead survey sources.
The Pearson-Readhead Survey from space (2004)
Preston, R. A., Tingay, S. J., Murphy, D. W., Meier, D. L., Pearson, T. J., Readhead, A. C. S., ...
The VSOP Space VLBI mission uses the HALCA spacecraft, launched from Japan in February 1997, in conjunction with gound radio observatories around the world to create a high resolution...
Polarization Observations with the Cosmic Background Imager (2004)
Readhead, A. C. S., Myers, S. T., Pearson, T. J., Sievers, J. L., Mason, B. S., Contaldi, C. R., ...
Polarization observations of the cosmic microwave background with the Cosmic Background Imager from September 2002 to May 2004 provide a significant detection of the E-mode polarization and reveal an...
Udomprasert, P. S., Mason, B. S., Readhead, A. C. S., Pearson, T. J.
We present Ho results from Cosmic Background Imager (CBI) observations of the Sunyaev-Zel'dovich Effect (SZE) in 7 galaxy clusters, A85, A399, A401, A478, A754, A1651, and A2597. These observations...
The radio source population at high frequency: follow-up of the 15-GHz 9C survey (2004)
Bolton, R. C., Cotter, G., Pooley, G. G., Riley, J. M., Waldram, E. M., Chandler, C. J., ...
We have carried out extensive radio and optical follow-up of 176 sources from the 15 GHz 9th Cambridge survey. Optical identifications have been found for 155 of the radio sources; optical images are...
Hales, A. S., Casassus, S., Alvarez, H., May, J., Bronfman, L., Readhead, A. C., ...
We present observations of the Vela X region at 31 GHz using the Cosmic Background Imager (CBI). We find a strong compact radio source (5.9'x4.1', FWHM) about the Vela pulsar, which we associate with...
Extended Mosaic Observations with the Cosmic Background Imager (2004)
Readhead, A. C. S., Mason, B. S., Contaldi, C. R., Pearson, T. J., Bond, J. R., Myers, S. T., ...
Two years of microwave background observations with the Cosmic Background Imager (CBI) have been combined to give a sensitive, high resolution angular power spectrum over the range 400 < l < 3500....
Anomalous radio emission from dust in the Helix (2003)
Casassus, S., Readhead, A. C. S., Pearson, T. J., Shepherd, M. C., Bronfman, L.
A byproduct of experiments designed to map the CMB is the recent detection of a new component of foreground Galactic emission. The anomalous foreground at ~ 10--30 GHz, unexplained by traditional...
Worrall, D. M., Hardcastle, M. J., Pearson, T. J., Readhead, A. C. S.
We combine results from ROSAT, Chandra, and multifrequency VLBA observations of the Compact Steep Spectrum quasar 3C 48. We infer that the X-ray spectrum of the nucleus is made up of a soft,...
Interferometric Observations of the Cosmic Microwave Background Radiation (2003)
Readhead, A. C. S., Pearson, T. J.
Radio interferometers are well suited to studies of both total intensity and polarized intensity fluctuations of the cosmic microwave background radiation, and they have been used successfully in...
Motion Statistics in the CJ Survey -- The Status in October 2002 (2003)
Vermeulen, R. C., Britzen, S., Taylor, G. B., Pearson, T. J., Readhead, A. C. S., Wilkinson, P. N., ...
In the Caltech-Jodrell Survey of bright flat-spectrum radio sources, 3-5 epochs have now been observed for nearly all 293 sources; a uniquely large sample. The derivation of component motions has not...
Follow-up of the 9C survey: Initial results (2003)
Bolton, R. C., Cotter, G., Pearson, T. J., Pooley, G. G., Readhead, A. C. S., Riley, J. M., ...
We present initial results from a follow-up of the 9C survey, complete to 25 mJy at 15 GHz, designed to assemble and investigate a sample of young radiosources. We have made radio continuum maps of...
The Cosmic Lens All-Sky Survey:II. Gravitational lens candidate selection and follow-up (2002)
Browne, I. W. A., Wilkinson, P. N., Jackson, N. J. F., Myers, S. T., Fassnacht, C. D., Koopmans, L. V. E., ...
We report the final results of the search for gravitationally lensed flat-spectrum radio sources found in the combination of CLASS (Cosmic Lens All Sky Survey) and JVAS (Jodrell-Bank VLA Astrometric...
The Cosmic Lens All-Sky Survey: I. Source selection and observations (2002)
Myers, S. T., Jackson, N. J., Browne, I. W. A., De Bruyn, A. G., Pearson, T. J., Readhead, A. C. S., ...
The Cosmic Lens All-Sky Survey (CLASS) is an international collaborative program which has obtained high-resolution radio images of over 10000 flat-spectrum radio sources in order to create the...
B0850+054: a new gravitational lens system from CLASS (2002)
Biggs, A. D., Rusin, D., Browne, I. W. A., De Bruyn, A. G., Jackson, N. J., Koopmans, L. V. E., ...
We report the discovery of a new gravitational lens system from the CLASS survey. Radio observations with the VLA, the WSRT and MERLIN show that the radio source B0850+054 is comprised of two compact...
CMB observations with the Cosmic Background Imager (CBI) Interferometer (2002)
Contaldi, C. R., Bond, J. R., Pogosyan, D., Mason, B. S., Myers, S. T., Pearson, T. J., ...
We review the recently published results from the CBI's first season of observations. Angular power spectra of the CMB were obtained from deep integrations of 3 single fields covering a total of 3...
CLASS B0445+123 : a new two-image gravitational lens system (2002)
Norbury, M. A., Myers, S. T., Marlow, D. R., Koopmans, L. V. E., Fassnacht, C. D., Chae, K. H., ...
Submitted to: Mon. Not. R. Astron. Soc. Abstract: A new two-image gravitational lens system has been discovered as a result of the Cosmic Lens All-Sky Survey (CLASS). Radio observations with the VLA,...
CLASS B0445+123: a new two-image gravitational lens system (2002)
Argo, M. K., Jackson, N. J., Browne, I. W. A., York, T., McKean, J. P., Biggs, A. D., ...
A new two-image gravitational lens system has been discovered as a result of the Cosmic Lens All-Sky Survey (CLASS). Radio observations with the VLA, MERLIN and the VLBA at increasingly higher...
The Cosmic Microwave Background & Inflation, Then & Now (2002)
Bond, J. R., Contaldi, C. R., Pogosyan, D., Mason, B. S., Myers, S. T., Pearson, T. J., ...
Boomerang, Maxima, DASI, CBI and VSA significantly increase the case for accelerated expansion in the early universe (the inflationary paradigm) and at the current epoch (dark energy dominance),...
Biggs, A. D., Blandford, R. D., Browne, I. W. A., De Bruyn, A. G., Fassnacht, C. D., ...
We derive constraints on cosmological parameters and the properties of the lensing galaxies from gravitational lens statistics based on the final Cosmic Lens All Sky Survey (CLASS) data. For a flat...
Cosmological Parameters from CMB measurements with the CBI (2002)
Contaldi, C. R., Bond, J. R., Pogosyan, D., Mason, B. S., Myers, S. T., Pearson, T. J., ...
We derive cosmological parameters from the CBI measurements of the Cosmic Microwave Background (CMB) angular power spectrum. Our results provide an independent confirmation of the standard...
Bond, J. R., Contaldi, C. R., Pogosyan, D., Prunet, S., Ruetalo, M. I., ...
We discuss the nature of the possible high-l excess in the Cosmic Microwave Background (CMB) anisotropy power spectrum observed by the Cosmic Background Imager (CBI). We probe the angular structure...
Sievers, J. L., Bond, J. R., Cartwright, J. K., Contaldi, C. R., Mason, B. S., Myers, S. T., ...
We report on the cosmological parameters derived from observations with the Cosmic Background Imager (CBI), covering 40 square degrees and the multipole range 300 < l < 3500. The angular scales...
Mason, B. S., Pearson, T. J., Readhead, A. C. S., Shepherd, M. C., Sievers, J. L., Udomprasert, P. S., ...
We report measurements of anisotropy in the cosmic microwave background radiation over the multipole range l ~ 200 - 3500 with the Cosmic Background Imager based on deep observations of three fields....
Myers, S. T., Contaldi, C. R., Bond, J. R., Pogosyan, D., Prunet, S., ...
We describe an algorithm for the extraction of the angular power spectrum of an intensity field, such as the cosmic microwave background (CMB), from interferometer data. This new method, based on the...
Pearson, T. J., Mason, B. S., Readhead, A. C. S., Shepherd, M. C., Sievers, J. L., Udomprasert, P. S., ...
Using the Cosmic Background Imager, a 13-element interferometer array operating in the 26-36 GHz frequency band, we have observed 40 sq deg of sky in three pairs of fields, each ~ 145 x 165 arcmin,...
The Cosmic Background Imager (2001)
Padin, S., Shepherd, M. C., Cartwright, J. K., Keeney, R. G., Mason, B. S., Pearson, T. J., ...
Design and performance details are given for the Cosmic Background Imager (CBI), an interferometer array that is measuring the power spectrum of fluctuations in the cosmic microwave background...
Experiment Design and First Season Observations with the Degree Angular Scale Interferometer (2001)
Leitch, E. M., Pryke, C., Halverson, N. W., Kovac, J., Davidson, G., LaRoque, S., ...
We describe the instrumentation, experiment design and data reduction for the first season of observations with the Degree Angular Scale Interferometer (DASI), a compact microwave interferometer...
DASI First Results: A Measurement of the Cosmic Microwave Background Angular Power Spectrum (2001)
Halverson, N. W., Leitch, E. M., Pryke, C., Kovac, J., Carlstrom, J. E., Holzapfel, W. L., ...
We present measurements of anisotropy in the Cosmic Microwave Background (CMB) from the first season of observations with the Degree Angular Scale Interferometer (DASI). The instrument was deployed...
The new two-image gravitational lens system CLASS B2319+051 (2001)
Rusin, D., Marlow, D. R., Norbury, M., Browne, I. W. A., Jackson, N., Wilkinson, P. N., ...
We report the discovery of a new two-image gravitational lens system from the Cosmic Lens All-Sky Survey, CLASS B2319+051. Radio imaging with the Very Large Array (VLA) and Multi-Element Radio-Linked...
The properties of the gamma-ray blazars in the CJ-F VLBI sample (2001)
Britzen, S., Vermeulen, R. C., Taylor, G. B., Campbell, R. M., Browne, I. W., Wilkinson, P., ...
We present first results from the analysis of multi-epoch VLBI observations of the EGRET detected sources [9] in the CJ-F sample (Caltech Jodrell-Flat-spectrum, [10]). These objects form a subsample...
Wilkinson, P. N., Henstock, D. R., Browne, I. W. A., Polatidis, A. G., Augusto, P., Readhead, A. C. S., ...
Using Very Long Baseline Interferometry we have searched a sample of 300 compact radio sources for examples of multiple imaging produced by gravitational lensing; no multiple images were found with...
Preliminary Results from the Cosmic Background Imager (2001)
Mason, B. S., Cartwright, J. K., Padin, S., Pearson, T. J., Readhead, A. C. S., Shepherd, M., ...
The Cosmic Background Imager (CBI) is a 13-element interferometer designed to image intrinsic anisotropies in the cosmic microwave background (CMB) on arcminute scales. A review of the capabilities...
Tingay, Steven J., Preston, Robert A., Lister, Matthew L., Piner, B. Glenn, Jones, D.L., Murphy, David W., ...
Abstract not available.