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arXiv 2109.09439astro-ph.COastro-ph.GA
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局部宇宙中作为反晕的空洞目录

Catalogues of voids as antihalos in the local Universe

Harry Desmond, Maxwell L. Hutt, Julien Devriendt, Adrianne Slyz

摘要:

最近提出的一种算法识别模拟中的空洞作为与晕相关的区域时,初始的过密度场被否定。我们将这种方法应用于真实的宇宙,通过运行一套约束模拟的2 M ++体积与初始条件推断的BORG算法,以及相应的倒置集。我们的101个倒置和未倒置的模拟,跨越BORG后,每个识别~ 150,000“空反晕”的质量超过$4.38\times10^{11} \: \mathrm{M_\odot}$(100个粒子)在$z=0$在一个半径为155 Mpc/h的全天空球体周围的银河系。我们计算的尺寸函数,体积填充率,椭圆率,中心密度,比角动量,集群和堆叠的密度分布的空洞,并互相关与VIDE上相同的模拟产生的。我们公开了我们的反光晕和VIDE目录。

英文摘要:

A recently-proposed algorithm identifies voids in simulations as the regions associated with halos when the initial overdensity field is negated. We apply this method to the real Universe by running a suite of constrained simulations of the 2M++ volume with initial conditions inferred by the BORG algorithm, along with the corresponding inverted set. Our 101 inverted and uninverted simulations, spanning the BORG posterior, each identify ~150,000 "voids as antihalos" with mass exceeding $4.38\times10^{11} \: \mathrm{M_\odot}$ (100 particles) at $z=0$ in a full-sky sphere of radius 155 Mpc/h around the Milky Way. We calculate the size function, volume filling fraction, ellipticity, central density, specific angular momentum, clustering and stacked density profile of the voids, and cross-correlate them with those produced by VIDE on the same simulations. We make our antihalo and VIDE catalogues publicly available.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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