Computer Science
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.324..617w&link_type=abstract
Nature (ISSN 0028-0836), vol. 324, Dec. 25, 1986, p. 617, 618.
Computer Science
3
Cosmology, Gravitational Lenses, Mass Distribution, Gamma Ray Bursts, Photons, Quasars, Supernovae, Universe, Very Long Base Interferometry, X Rays
Scientific paper
A summary is presented of ongoing programs to identify, verify and use gravitational lenses to probe the distribution of matter in the universe. Techniques are discussed for analyzing the spectral differences between images which travel a different photon path to earth, and to the different tests applied to radio and optical quasars. Characteristics of observational data which have led to recently discovered candidate lenses such as 0957 + 561A,B and 2016 + 112 are discussed. Use of the lenses to discern single gamma ray burst events where multiple bursts are detected, estimate the sizes of quasars, measure the mass of the primary galaxy in a lens, and probe dark compact objects are described.
Fitchett Michael
Webster Rachel
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