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Articles 1–20. Associate Professor of Physics, University of California, Davis - Cited by 10,192 - astrophysics.
He was the first to detect cosmic shear, or weak lensing by the large-scale structure of the universe. He was also the first to detect a cluster of galaxies through its gravitational effects alone, and the first to combine source redshift information with lensing to probe structure in three dimensions (tomography).
David Wittman at UC Davis. High-redshift cluster of galaxies discovered through its gravitational effects alone, in the Deep Lens Survey.
I developed a passion for bringing relativity to thinkers who happen to have no physics background. This book includes all the best thinking tools I developed over a decade of teaching this topic as a Topics in Physics course as well as through the University Honors Program. Research Articles.
Objective: Gravitational lensing is the most direct method of observing dark matter, and it is "weak" for all but the densest lines of sight in the universe (~1 gm cm -2 ). We will get familiar with the methods of this new and rapidly developing field, and look at the results with an eye to the larger context of observational cosmology.
Prof. David Wittman was awarded 8 orbits of Hubble Space Telescope time to study collisions of galaxy clusters. These are the largest masses in the universe and a large fraction of their mass is dark matter.
David Wittman ( UC, Davis. ) astro-ph. Author Identifier: D.Wittman.1. 2004-present. JUNIOR, UC, Davis. 1997-2004. STAFF, Bell Labs. 1990-1997. PHD, Arizona U. Show all positions (4) edit. Updated on Sep 14, 2023. Research works. Cited By. 1992 2024. Single author. 10 authors or less. Exclude Review of Particle Physics. article. published.
