6.6k citations · 25.6k across the 92 of their papers we have counts for
92 papers
The radial metric function does not identify null surfaces
Yi-Hsiung Hsu, Will Barker, Michael Hobson +1
We investigate the conditions under which a hypersurface becomes null through the use of coordinate transformations. We demonstrate that, in static spacetimes, the correct criterio…
Buchdahl bound, photon ring, ISCO and radial acceleration in Einstein-æther theory
Yi-Hsiung Hsu, Anthony Lasenby, Will Barker +2
Spherically symmetric Einstein-æther (EÆ) theory with a Maxwell-like kinetic term is revisited. We consider a general choice of the metric and the æther field, finding that:~(i) th…
Every Poincaré gauge theory is conformal: a compelling case for dynamical vector torsion
Will Barker, Michael Hobson, Anthony Lasenby +2
The Poincaré gauge theory (PGT) of gravity provides a viable formulation of general relativity (Einstein-Cartan theory), and a popular model-building framework for modified gravity…
QUIJOTE scientific results -- VIII. Diffuse polarized foregrounds from component separation with QUIJOTE-MFI
E. de la Hoz, R. B. Barreiro, P. Vielva +23
We derive linearly polarized astrophysical component maps in the Northern Sky from the QUIJOTE-MFI data at 11 and 13 GHz in combination with the WMAP K and Ka bands (23 and 33 GHz)…
Some recent results for and Octonions within the Geometric Algebra approach to the fundamental forces of nature
Anthony Lasenby
Different ways of representing the group within a Geometric Algebra approach are explored. As part of this we consider characteristic multivectors for , and how thes…
Detection of Spectral Variations of Anomalous Microwave Emission with QUIJOTE and C-BASS
R. Cepeda-Arroita, S. Harper, C. Dickinson +32
Anomalous Microwave Emission (AME) is a significant component of Galactic diffuse emission in the frequency range -GHz and a new window into the properties of sub-nanomet…