Chang-Refsdal lens

Chang-Refsdal lens

A Chang-Refsdal lens is a point-mass gravitational lens (e.g. Black hole) perturbed by constant external shear.[1]

The name derives from Kyongae Chang and Sjur Refsdal who in 1979 published a paper in NATURE 282, 561. "Flux Variations of QSO Q0957+561 A,B and image splitting by stars Near the Light Path." The paper illustrated that stars could affect quasar image brightness.

References

  1. ^ Citebase - The Chang-Refsdal Lens Revisited

See also


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Look at other dictionaries:

  • Chang-Refsdal-Linse — Die Chang Refsdal Linse ist eine Punktmassen Gravitationslinse, die durch einen Scherterm gestört ist. Der Name stammt von Kyongae Chang und Sjur Refsdal, die 1979 einen Artikel[1] in der Wissenschaftszeitschrift Nature veröffentlichten, der… …   Deutsch Wikipedia

  • Sjur Refsdal — Prof Sjur Refsdal (born December 30, 1935) is a Norwegian astrophysicist, born in Oslo. He is best known for his pioneer work on gravitational lensing, including the Chang Refsdal lens.In 1970 he earned a PhD at the Institute of Theoretical… …   Wikipedia

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