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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).
Articles 1–20. Associate Professor of Physics, University of California, Davis - Cited by 10,192 - astrophysics.
2020 Extragalactic Astrophysics. Most upper-division textbooks assume that students have completely mastered all of lower-division physics. This leaves many students overwhelmed, particularly transfer students who are also facing a transition from the semester system to the faster-paced quarter system.
David Wittman at UC Davis. High-redshift cluster of galaxies discovered through its gravitational effects alone, in the Deep Lens Survey.
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.
May 10, 2018 · David M. Wittman is a professor at the University of California, Davis. He has discovered millions of galaxies as co-PI of the Deep Lens Survey, which was awarded over 100 nights on...
Sep 4, 2023 · 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(87) Cited By. 1992 2023. Single author. 10 authors or less. Exclude Review of Particle Physics. article. published.
