منابع مشابه
Quantitative analysis of galaxy-galaxy lensing
Gravitational light deflection due to mass along the line-of-sight will distort the images of background sources. This effect has been used successfully to investigate the mass distribution of galaxy clusters. Although an individual galaxy is not massive enough to cause a detectable lensing distortion in the background population, this effect can be measured statistically for a population of ga...
متن کاملGalaxy-galaxy lensing in clusters: new results
A synopsis of the recent results from our study of galaxygalaxy lensing in clusters is presented. We have applied our analysis techniques to the sample of HST cluster-lenses that span a redshift range from z = 0.18–0.58. We find that there is evidence that the total mass of a typical early-type cluster L galaxy increases with redshift. For the lowest redshift bin, a sensible comparison can be m...
متن کاملGalaxy-galaxy-galaxy lensing: Third-order correlations between the galaxy and mass distributions in the Universe
Abstract. Galaxy-galaxy lensing (GGL) measures the 2-point cross-correlation between galaxies and mass in the Universe. In this work we seek to generalise this effect by considering the third-order correlations between galaxies and mass: galaxy-galaxy-galaxy lensing. Third-order correlations in the cosmic shear field have recently been reported in the VIRMOS-DESCART and CTIO surveys. Such data ...
متن کاملDetection of the Galaxy Lensing
H band observations with a spatial resolution of 0: 00 15 carried out with the Canada-France-Hawaii Telescope adaptive optics system show a galaxy between the components of the double BAL QSO SBS 1520+530, thereby connrming this system as a gravitational lens. The galaxy is located 0: 00 40 from the fainter of the two QSO images and is ooset 0: 00 12 from the line joining them. The H magnitude ...
متن کاملIntrinsic/extrinsic Density-ellipticity Correlations and Galaxy-galaxy Lensing
We compute both extrinsic (lensing) and intrinsic contributions to the (galaxy-)density-ellipticity correlation function, the latter done using current analytic theories of tidal alignment. The gravitational lensing contribution has two components: one is analogous to galaxy-galaxy lensing and the other arises from magnification bias – that gravitational lensing induces a modulation of the gala...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2012
ISSN: 0035-8711
DOI: 10.1111/j.1365-2966.2012.20438.x