Cosmic voids in coupled dark energy cosmologies: the impact of halo bias
Cosmic voids in coupled dark energy cosmologies: the impact of halo bias
复制标题
耦合暗能量宇宙学中的宇宙空洞：晕偏的影响
DOI：
10.1093/mnras/stv2503
复制
发表时间：
2015
影响因子：
4.8
通讯作者：
L. Moscardini
中科院分区：
文献类型：
--
作者：
G. Pollina;M. Baldi;F. Marulli;L. Moscardini
In this work, we analyse the properties of cosmic voids in standard and coupled dark energy cosmologies. Using large numerical simulations, we investigate the effects produced by the dark energy coupling on three statistics: the filling factor, the size distribution and the stacked profiles of cosmic voids. We find that the bias of the tracers of the density field used to identify the voids strongly influences the properties of the void catalogues, and, consequently, the possibility of using the identified voids as a probe to distinguish coupled dark energy models from the standard Lambda cold dark matter cosmology. In fact, on one hand coupled dark energy models are characterized by an excess of large voids in the cold dark matter distribution as compared to the reference standard cosmology, due to their higher normalization of linear perturbations at low redshifts. Specifically, these models present an excess of large voids with R-eff > 20, 15, 12h(-1) Mpc, at z = 0, 0.55, 1, respectively. On the other hand, we do not find any significant difference in the properties of the voids detected in the distribution of collapsed dark matter haloes. These results imply that the tracer bias has a significant impact on the possibility of using cosmic void catalogues to probe cosmology.
DOI：
10.1111/j.1365-2966.2009.15987.x
发表时间：
2008-12
影响因子：
4.8
作者：
M. Baldi;V. Pettorino;G. Robbers;V. Springel
通讯作者：
M. Baldi;V. Pettorino;G. Robbers;V. Springel
DOI：
10.1016/j.ascom.2014.10.002
发表时间：
2014-06
期刊：
Astron. Comput.
影响因子：
--
作者：
P. Sutter;G. Lavaux;N. Hamaus;A. Pisani;Benjamin Dan Wandelt;Michael S. Warren;F. Villaescusa-Navarro-F.-Villaescusa-Navarr
通讯作者：
P. Sutter;G. Lavaux;N. Hamaus;A. Pisani;Benjamin Dan Wandelt;Michael S. Warren;F. Villaescusa-Navarro-F.-Villaescusa-Navarr
修改透镜化势中的空隙导致弱透镜化
影响因子：
6.4
作者：
Barreira A
通讯作者：
Barreira A