Results 1 to 10 of about 743,584 (263)
The hydrostatic mass bias in The Three Hundred clusters [PDF]
EPJ Web of Conferences, 2022 The assumption of Hydrostatic equilibrium (HE) is often used in observations to estimate galaxy clusters masses. We use a set of almost 300 simulated clusters from The Three Hundred Project, to estimate the cluster HE mass and the bias deriving from it ...
Gianfagna Giulia +4 more
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Weak-lensing Mass Bias in Merging Galaxy Clusters
The Astrophysical Journal, 2023 Although weak lensing (WL) is a powerful method to estimate a galaxy cluster mass without any dynamical assumptions, a model bias can arise when the cluster density profile departs from the assumed model profile. In a merging system, the bias is expected
Wonki Lee +8 more
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Estimation of the hydrostatic-to-lensing mass bias from resolved cluster masses [PDF]
EPJ Web of ConferencesWe present a study on the bias of hydrostatic masses with respect to lensing mass estimates for a sample of 53 clusters in a redshift range between z = 0.05 and 1.07.
Muñoz-Echeverría M. +13 more
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The cosmology dependence of the cluster weak-lensing mass bias
Astronomy & AstrophysicsContext. Measurements of the shear induced by weak gravitational lensing around galaxy cluster lines of sight are the gold standard for calibrating cluster observable–mass relations, enabling a robust and precise inference of cosmological parameters. The
Bocquet S. +5 more
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Constraining hydrostatic mass bias and cosmological parameters with the gas mass fraction in galaxy clusters [PDF]
EPJ Web of Conferences, 2022 The gas mass fraction in galaxy clusters is a convenient tool to use in the context of cosmological studies. Indeed this quantity allows to constrain the universal baryon fraction Ωb/Ωm, as well as other parameters like the matter density Ωm, the Hubble ...
Wicker Raphaël +3 more
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Characterizing hydrostatic mass bias with
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Surveys in the next decade will deliver large samples of galaxy clusters that transform our understanding of their formation. Cluster astrophysics and cosmology studies will become systematics limited with samples of this magnitude.
David J Barnes +7 more
openaire +3 more sources
The three causes of low-mass assembly bias [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We present a detailed analysis of the physical processes that cause halo assembly bias – the dependence of halo clustering on proxies of halo formation time. We focus on the origin of assembly bias in the mass range corresponding to the hosts of typical galaxies and use halo concentration as our chief proxy of halo formation ...
Philip Mansfield, Andrey V Kravtsov
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How to handle glacier area change in geodetic mass balance
Journal of Glaciology, 2023 Innovations in geodesy enable widespread analysis of glacier surface elevation change and geodetic mass balance. However, coincident glacier area data are less widely available, causing inconsistent handling of glacier area change.
Caitlyn Florentine +4 more
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Journal of Glaciology, 2021 The TanDEM-X DEM is a valuable data source for estimating glacier mass balance. However, the accuracy of TanDEM-X elevation over glaciers can be affected by microwave penetration and phase decorrelation.
Jia Li +9 more
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Velocity and mass bias in the distribution of dark matter haloes [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 The non-linear, scale-dependent bias in the mass distribution of galaxies and the underlying dark matter is a key systematic affecting the extraction of cosmological parameters from galaxy clustering. Using 95 million halos from the Millennium-XXL N-body simulation, we find that the mass bias is scale independent only for $k<0.1 h{\rm Mpc}^{-1 ...
Jennings, E., Baugh, C.M., Hatt, D.
openaire +4 more sources