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- W3215032610 endingPage "5154" @default.
- W3215032610 startingPage "5142" @default.
- W3215032610 abstract "ABSTRACT Dark matter haloes represent the highest density peaks in the matter distribution. Conversely, cosmic voids are underdense patches of the universe. Probing the mass distribution of the universe requires various approaches, including weak gravitational lensing that subtly modifies the shape of distant sources, and Doppler lensing that changes the apparent size and magnitude of objects due to peculiar velocities. In this work, we adopt both gravitational and Doppler lensing effects to study the underlying matter distribution in and around cosmic voids or haloes. We use the relativistic N-body code gevolution, to generate the mass perturbations and develop a new ray-tracing code that relies on the design of the ray bundle method. We consider three categories of halo masses and void radii, and extract the cosmological information by stacking weak-lensing and Doppler lensing signals around voids or haloes. The results of this paper show that the most optimal strategy that combines both gravitational and Doppler lensing effects to map the mass distribution should focus on the redshift range z ≈ 0.3−0.4. The recommendation of this paper is that future spectroscopic surveys should focus on these redshifts and utilize the gravitational and Doppler lensing techniques to extract information about underlying matter distribution across the cosmic web, especially inside cosmic voids. This could provide a complimentary cosmological analysis for ongoing or future low-redshift spectroscopic surveys." @default.
- W3215032610 created "2021-12-06" @default.
- W3215032610 creator A5020901295 @default.
- W3215032610 creator A5054962386 @default.
- W3215032610 creator A5058938677 @default.
- W3215032610 creator A5075604193 @default.
- W3215032610 date "2021-11-12" @default.
- W3215032610 modified "2023-09-23" @default.
- W3215032610 title "Mapping the cosmic mass distribution with stacked weak gravitational lensing and Doppler lensing" @default.
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