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   Articles with "weak lensing" as a keyword



Weak lensing probe of cubic Galileon model

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recommendations! Published in 2018 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2018/06/017

Abstract: The cubic Galileon model containing the lowest non-trivial order action of the full Galileon action can produce the stable late-time cosmic acceleration. This model can have a significant role in the growth of structures. The… read more here.

Keywords: probe; weak lensing; model; galileon model ... See more keywords

Quantifying baryon effects on the matter power spectrum and the weak lensing shear correlation

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recommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2019/03/020

Abstract: Feedback processes from baryons are expected to strongly affect weak-lensing observables of current and future cosmological surveys. In this paper we present a new parametrisation of halo profiles based on gas, stellar, and dark matter… read more here.

Keywords: weak lensing; gas; effects matter; power spectrum ... See more keywords

Constraining neutrino mass with the tomographic weak lensing bispectrum

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recommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2019/05/043

Abstract: We explore the effect of massive neutrinos on the weak lensing shear bispectrum using the Cosmological Massive Neutrino Simulations. We find that the primary effect of massive neutrinos is to suppress the amplitude of the… read more here.

Keywords: weak lensing; bispectrum; neutrino mass; power spectrum ... See more keywords
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Full-sky weak lensing: a nonlinear post-Friedmann treatment

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recommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2019/05/045

Abstract: We present a full-sky derivation of weak lensing observables in the Post-Friedmann (PF) formalism. Weak lensing has the characteristic of mixing small scales and large scales since it is affected by inhomogeneities integrated along the… read more here.

Keywords: sky weak; full sky; lensing observables; post friedmann ... See more keywords

Constraining neutrino mass with weak lensing Minkowski Functionals

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recommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2019/06/019

Abstract: The presence of massive neutrinos affects structure formation, leaving imprints on large-scale structure observables such as the weak lensing field. The common lensing analyses with two-point statistics are insensitive to the large amount of non-Gaussian… read more here.

Keywords: neutrino mass; minkowski functionals; mass; weak lensing ... See more keywords
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Forecasts of cosmological constraints from Type Ia supernovae including the weak-lensing convergence

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recommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2019/06/033

Abstract: We investigate how the cosmological constraints from SNe Ia are improved by including the effects of weak-lensing convergence. To do so, we introduce the lognormal function as the convergence PDF modeling the lensing scatter of… read more here.

Keywords: lensing convergence; weak lensing; forecasts cosmological; cosmological constraints ... See more keywords

Forecasting super-sample covariance in future weak lensing surveys with SuperSCRAM

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recommendations! Published in 2019 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2019/10/004

Abstract: The observable universe contains density perturbations on scales larger than any finite volume survey. Perturbations on scales larger than a survey can measure degrade its power to constrain cosmological parameters. The dependence of survey observables… read more here.

Keywords: weak lensing; survey; sample covariance; super sample ... See more keywords
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Primordial Power Spectrum reconstruction from CMB Weak Lensing Power Spectrum

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recommendations! Published in 2021 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2021/10/081

Abstract: We use the modified and improved Richardson-Lucy (IRL) deconvolution algorithm to reconstruct the Primordial Power Spectrum (PPS) from the Weak Lensing Power Spectrum CL ϕϕ reconstructed from CMB anisotropies. This provides an independent window to… read more here.

Keywords: primordial power; power; weak lensing; lensing power ... See more keywords

Cosmological constraints from weak lensing scattering transform using HSC Y1 data

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recommendations! Published in 2024 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2025/01/006

Abstract: As weak lensing surveys go deeper, there is an increasing need for reliable characterization of non-Gaussian structures at small angular scales. Here we present the first cosmological constraints with weak lensing scattering transform, a statistical… read more here.

Keywords: scattering transform; lensing scattering; cosmological constraints; weak lensing ... See more keywords

Impact of cosmology dependence of baryonic feedback in weak lensing

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recommendations! Published in 2024 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2025/03/041

Abstract: Robust modeling of non-linear scales is critical for accurate cosmological inference in Stage IV surveys. For weak lensing analyses in particular, a key challenge arises from the incomplete understanding of how non-gravitational processes, such as… read more here.

Keywords: impact cosmology; baryonic feedback; weak lensing; cosmology ... See more keywords

Weak Lensing Analysis of A115, A2219 and A2261: Detection of Galaxy Groups and Filaments Around Clusters

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recommendations! Published in 2025 at "Publications of the Astronomical Society of the Pacific"

DOI: 10.1088/1538-3873/adcbd5

Abstract: We present a weak lensing and multi-wavelength analysis of three galaxy clusters: A115, A2219, and A2261. Weak lensing is performed using shape measurements made in short 60 s exposure images obtained using WIYN-ODI. Forced measurement… read more here.

Keywords: a2219 a2261; analysis; weak lensing; galaxy groups ... See more keywords