1999/09/17 by Ole Moeller, Priyamvada Natarajan, Moeller, Ole +1
Physics and Astronomy · #Adaptive optics and wavefront sensing #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9909303
2 pages, 2 figures. Poster presentation at "Gravitational Lensing: Recent Progress and Future Goals", Boston University 1999, eds. T.G. Brainerd and C.S. Kochanek
openalex publication_date 1999/09/17 · arxiv created 1999/09/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A large fraction of known galaxy-lens systems require a component of external shear to explain the observed image geometries. In most cases, this shear can be attributed to a nearby group of galaxies. We discuss how the dark-matter mass distribution of groups of galaxies can influence the external shear for strongly lensed sources and Calculate the expected weak lensing signal from groups for various mass profiles.