Gravitational lensing as a universal astrophysical tool

Details Gravitational lensing as a universal astrophysical tool Gravitational lensing as a universal astrophysical tool

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001pabei..19s..10w&link_type=abstract

"Progress in Astronomy, Vol. 19, Supp., p. 10 - 16 (2001). In: Proceedings of the Fourth China-Germany Workshop on Cosmology "Co

Astronomy and Astrophysics

Astronomy

Gravitational Lensing, Quasars

Scientific paper

In the two decades since the decovery of the first double quasar, gravitational lensing has been applied in quite a number of astrophysical fields and turned out as a very useful astrophysical and cosmological tool. After a few historic remarks and a brief introduction into the basics of lensing, a few examples of strong and weak lensing phenomena are given. In the main part four recent applications of lensing in astrophysics/cosmology are discussed, namely the determination of the Hubble constant in the double quasar Q0957+561, microlensing of quasars, search for extrasolar planets with gravitational lensing, and the recent detection of very weak lensing.

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