Angela C. Taylor

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We present deep Ka-band (ν ≈ 33 GHz) observations of the CMB made with the extended Very Small Array. This array produces a synthesized beam width (FWHM) of ∼ 11 arcmin and covers an ℓ-range of 300 to 1500. On these scales, foreground extragalactic sources can be a major source of contamination to the CMB anisotropy. This problem has been alleviated by(More)
The cover pictures display the filamentary structure of the neutral Hydrogen in the Universe at different epochs. The pictures are based on the SKA Design Study (SKADS) simulation (Obreschkow et al. 2007). II Preface The full Square Kilometre Array (SKA) will become available in about 2020. It will then deliver datasets capable of transforming our(More)
We have observed the cosmic microwave background in three regions of sky using the Very Small Array at 34 GHz. A total area of 101 square degrees has been imaged on angular scales of 3 • .6–0 • .4 (angular multipoles ℓ=150–900). Primordial anisotropies are detected at high significance in all three regions, and the signals seen in overlapping pointings(More)
We describe the design and expected performance of Clover, a new instrument designed to measure the B-mode polarization of the cosmic microwave background. The proposed instrument will comprise three independent telescopes operating at 90, 150 and 220 GHz and is planned to be sited at Dome C, Antarctica. Each telescope will feed a focal plane array of 128(More)
Clover is a new instrument being built to detect the B-mode polarization of the CMB. It consists of three telescopes operating at 97, 150, and 220 GHz and will be sited in Chile at the Llano de Chajnantor. Each telescope assembly is scaled to give a constant beam size of 8 arcmin and feeds an array of between 320 and 512 finline-coupled TES bolometers. Here(More)
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. We have tested the operation of the VSA with a variety of blank-field and calibrator observations and cross-checked its calibration scale against independent measurements. We find that systematic(More)
We investigate the constraints on basic cosmological parameters set by the first compact-configuration observations of the Very Small Array (VSA), and other cos-mological data sets, in the standard inflationary ΛCDM model. Using a weak prior 40 < H 0 < 90 km s −1 Mpc −1 we find that the VSA and COBE data alone produce the constraints Ω tot = 1.03
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 other cosmological observations. We estimate cosmological parameters for four different models of increasing complexity. In each case, careful consideration is(More)
Interviews with low-level drug dealers in New York City reveal that the monetary costs of distributing drugs are modest. Hence, the proportion of sales revenue retained by these sellers is a meaningful indicator of their earnings. There are four distinct types of sellers, with systematic differences across types in the proportion of sales revenue retained.(More)