Lensing Magnification and QSO-Galaxy Cross-Correlations: Observations, Theory and Simulations
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedade Brasileira de Física
2005
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| _version_ | 1876474166644834304 |
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| author | Antonio C. C. Guimarães |
| author_facet | Antonio C. C. Guimarães |
| contents | Lensing Magnification and QSO-Galaxy Cross-Correlations: Observations, Theory and Simulations Antonio C. C. Guimarães Física, Astronomía y Matemáticas We review observations and gravitational lensing theory related to the magnification of background QSOs byintervening overdensities, and the induced cross-correlation between sources and foreground galaxies. We payspecial attention to simulations, and present some preliminary results from high resolution cluster simulations,which show the role of the halo core and substructure on non-linear magnification. For massive clusters, deviationsfrom the weak gravitational lensing regime are significant on arcmin scales and bellow. The accumulatedknowledge in the field already shows that gravitational lensing magnification is an important astrophysical andcosmological tool. 2005 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46435746 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4B Vol.35 |
| format | Artículo científico |
| id | redalyc_46435746 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Lensing Magnification and QSO-Galaxy Cross-Correlations: Observations, Theory and Simulations Antonio C. C. Guimarães Física, Astronomía y Matemáticas Lensing Magnification and QSO-Galaxy Cross-Correlations: Observations, Theory and Simulations Antonio C. C. Guimarães Física, Astronomía y Matemáticas We review observations and gravitational lensing theory related to the magnification of background QSOs byintervening overdensities, and the induced cross-correlation between sources and foreground galaxies. We payspecial attention to simulations, and present some preliminary results from high resolution cluster simulations,which show the role of the halo core and substructure on non-linear magnification. For massive clusters, deviationsfrom the weak gravitational lensing regime are significant on arcmin scales and bellow. The accumulatedknowledge in the field already shows that gravitational lensing magnification is an important astrophysical andcosmological tool. 2005 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46435746 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.4B Vol.35 |
| title | Lensing Magnification and QSO-Galaxy Cross-Correlations: Observations, Theory and Simulations |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=46435746 |