暗物质晕质量函数(Mass function of dark matter halo) 坦特里斯 渔夫 科学求真 赢10 万奖金 · 院士面对面 24 人赞同了该文章 暗物质晕分布的统计性质,即特定红移 z 与质量 M 的暗物质晕的数密度分布 n=n(M,z) ,能够告诉我们结构形成的重要信息。
The dark matter halo mass function (HMF) is a characteristic property of cosmological structure formation models, quantifying the number density of dark matter haloes per unit mass in the Universe. A key goal of current and planned large galaxy surveys is to measure the HMF and to use it to...
Without relying on a spherical or ellipsoidal collapse model, we analytically derive the halo mass function and cuspy halo density (inner slope of −4/3) based on the mass and energy cascade theory in dark matter flow. The hierarchical halo structure formation leads to halo or particle random...
Reference: “Weak lensing reveals a tight connection between dark matter halo mass and the distribution of stellar mass in massive galaxies” by Song Huang, Alexie Leauthaud, Andrew Hearin, Peter Behroozi, Christopher Bradshaw, Felipe Ardila, Joshua Speagle, Ananth Tenneti, Kevin Bundy, Jenny G...
We revisit the derivation of the mass function and the bias of dark matter halos for non-Gaussian initial conditions. We use a steepest-descent approach to point out that exact results can be obtained for the high-mass tail of the halo mass function and the two-point correlation of massive...
We find that with the exception of the asymmetric IC5052, all of the galaxies in our sample are good candidates for 3D mass modelling to measure the dark halo shape. The flaring profiles are symmetric with respect to the galactic centres and have a common shape, increasing linearly inside ...
Meanwhile, given the lack of significant observational evidence for instantaneous negative AGN feedback on the global ISM and global SFR in galaxy populations, I will discuss the connections between stellar mass growth history, quenching history and halo assembly history for central galaxies....
Vallés-Pérez, D., Planelles, S. & Quilis, V. The halo-finding problem revisited: a deep revision of the ASOHF code.Astron. Astrophys.664, A42 (2022). ArticleADSGoogle Scholar Cole, S. & Lacey, C. The structure of dark matter haloes in hierarchical clustering models.Mon. Not. R. ...
Together with HI observations, several mass models were adjusted in order to study the nature of the dark halo as well as the mass-to-light ratio of the galaxy. We find that in order to constrain these models, it is important to have a high resolution H α rotation curve for the inner...
We use two very large cosmological simulations to study how the density profiles of relaxed Λ cold dark matter dark haloes depend on redshift and on halo mass. We confirm that these profiles deviate slightly but systematically from the NFW form and are better approximated by the empirical ...