Statistics – Computation
Scientific paper
Jun 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997pabei..15..157z&link_type=abstract
Prog. Astron., Vol. 15, No. 2, p. 157 - 168
Statistics
Computation
Gravitational Lenses: Quasar-Galaxy Associations, Gravitational Lenses: Clusters Of Galaxies
Scientific paper
The observational evidence and statistical analysis on the association of background sources (such as QSOs) with foreground objects (such as galaxies and clusters of galaxies etc.) are reviewed. The gravitational lensing theory which is relevant to the problem of associations is reviewed in detail. The methods and statement of research and existing problems in explaining various associations through gravitational lensing theory are completely introduced. The authors have also proposed a modification for the computation of the surface density enhancement in association samples.
He Xiangtao
Yuan Qirong
Zhu Zonghong
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