48 citations · 126 across the 3 of their papers we have counts for
3 papers
astro-ph2008★ 43 cited
Edge Detection, Cosmic Strings and the South Pole Telescope
Andrew Stewart, Robert Brandenberger
We develop a method of constraining the cosmic string tension which uses the Canny edge detection algorithm as a means of searching CMB temperature maps for the signature of t…
astro-ph2007★ 48 cited
Observational Constraints on Theories with a Blue Spectrum of Tensor Modes
Andrew Stewart, Robert Brandenberger
Motivated by the string gas cosmological model, which predicts a blue tilt of the primordial gravitational wave spectrum, we examine the constraints imposed by current and planned…
physics.optics2005★ 35 cited
Angular momentum of light
A. M. Stewart
By means of the Helmholtz theorem on the decomposition of vector fields, the angular momentum of the classical electromagnetic field is decomposed, in a general and manifestly gaug…