Dust in galaxy clusters: Modeling at millimeter wavelengths and impact on Planck cluster cosmology
Dust in galaxy clusters: Modeling at millimeter wavelengths and impact on Planck cluster cosmology
复制标题
星系团中的尘埃：毫米波长建模及其对普朗克星团宇宙学的影响
DOI：
10.1051/0004-6361/201732292
复制
发表时间：
2018
影响因子：
6.5
通讯作者：
A. Bonaldi
中科院分区：
文献类型：
--
作者：
J. Melin;J. Bartlett;Z. Cai;G. Zotti;J. Delabrouille;M. Roman;A. Bonaldi
我们已经研究了尘埃排放的星系团在毫米波长的普朗克857 GHz的地图，以限制模型的基础上赫歇尔观测，用于研究宇宙起源探测器（CORE）的使命的概念。通过叠加普朗克探测到的星系团的辐射，我们估计了红外光度与质量关系的归一化，并限制了尘埃辐射的空间分布。我们使用这个新的约束模型来模拟我们注入普朗克频率图的集群。使用这些气体+尘埃模拟和基本的气体模拟提取的集群之间的比较，使我们能够评估集群尘埃排放对普朗克结果的影响。特别是，我们确定了集群参数恢复（大小，通量）和普朗克集群宇宙学结果（调查的完整性，宇宙学参数的测定）的影响。我们发现，尘埃排放对普朗克使命的单个星系团参数的恢复有着微不足道的影响，但它会影响星系团目录的完整性，使红移范围[0.3-0.8]内的探测数量减少了1.9%。在宇宙学分析中纠正这种不完整性对宇宙学参数测量的影响可以忽略不计：特别是，它不会缓解普朗克星系团和原始宇宙微波背景宇宙学之间的紧张关系。
We have examined dust emission in galaxy clusters at millimeter wavelengths using the Planck 857 GHz map to constrain the model based on Herschel observations that was used in studies for the Cosmic ORigins Explorer (CORE) mission concept. By stacking the emission from Planck-detected clusters, we estimated the normalization of the infrared luminosity versus mass relation and constrained the spatial profile of the dust emission. We used this newly constrained model to simulate clusters that we inject into Planck frequency maps. The comparison between clusters extracted using these gas+dust simulations and the basic gas-only simulations allows us to assess the impact of cluster dust emission on Planck results. In particular, we determined the impact on cluster parameter recovery (size, flux) and on Planck cluster cosmology results (survey completeness, determination of cosmological parameters). We show that dust emission has a negligible effect on the recovery of individual cluster parameters for the Planck mission, but that it impacts the cluster catalog completeness, reducing the number of detections in the redshift range [0.3–0.8] by up to ∼9%. Correcting for this incompleteness in the cosmological analysis has a negligible effect on cosmological parameter measurements: in particular, it does not ease the tension between Planck cluster and primary cosmic microwave background cosmologies.
DOI：
10.2172/1352047
发表时间：
2016-10
期刊：
--
影响因子：
--
作者：
K. Abazajian;Peter Adshead;Z. Ahmed;S. Allen;D. Alonso;K. Arnold;C. Baccigalupi;J. Bartlett;
通讯作者：
K. Abazajian;Peter Adshead;Z. Ahmed;S. Allen;D. Alonso;K. Arnold;C. Baccigalupi;J. Bartlett;