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The Observatory for Multi-Epoch Gravitational Lens Astrophysics (OMEGA)
Leonidas A Moustakas, Adam J Bolton, Jeffrey T Booth +15
(abridged) The Observatory for Multi-Epoch Gravitational Lens Astrophysics (OMEGA) is a mission concept for a 1.5-m near-UV through near-IR space observatory that will be dedicated…
Cosmological Information in the Gravitational Lensing of Pregalactic HI
R. Benton Metcalf, S. D. M. White
We study the constraints which the next generation of radio telescopes could place on the nature of dark energy, dark matter and inflation by studying the gravitational lensing of…
Imaging the Cosmic Matter Distribution using Gravitational Lensing of Pregalactic HI
Stefan Hilbert, R. Benton Metcalf, S. D. M. White
21-cm emission from neutral hydrogen during and before the epoch of cosmic reionisation is gravitationally lensed by material at all lower redshifts. Low-frequency radio observatio…
New Constraints on Macroscopic Compact Objects as a Dark Matter Candidate from Gravitational Lensing of Type Ia Supernovae
R. Benton Metcalf, Joseph Silk
We use the distribution, and particularly the skewness, of high redshift type Ia supernovae brightnesses relative to the low redshift sample to constrain the density of macroscopic…
Smooth Particle Lensing
Dominique Aubert, Adam Amara, R. Benton Metcalf
We present a numerical technique to compute the gravitational lensing induced by simulated haloes. It relies on a 2D-Tree domain decomposition in the lens plane combined with a des…
Simulations of Strong Gravitational Lensing with Substructure
Adam Amara, R. Benton Metcalf, Thomas J. Cox +1
Galactic sized gravitational lenses are simulated by combining a cosmological N-body simulation and models for the baryonic component of the galaxy. The lens caustics, critical cur…