Impact of the calibration of the halo mass function on galaxy cluster number count cosmology

Impact of the calibration of the halo mass function on galaxy cluster number count cosmology
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晕质量函数的校准对星系团计数宇宙学的影响

DOI:
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发表时间:
2021
影响因子:
6.5
通讯作者:
C. Murray
C. Murray
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
E. Artis;J. Melin;J. Bartlett;C. Murray

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晕质量函数(HMF)是星系团目录宇宙学分析中的关键要素。我们量化的HMF参数的不确定性对宇宙学约束的影响,从集群目录类似的普朗克,那些预期从欧几里得,罗马和鲁宾调查,并从一个假设的更大的未来调查。我们分析模拟目录在每种情况下,逐步放松先验的HMF参数,以评估宇宙学约束的退化。虽然目前HMF参数的不确定性并没有实质性影响普朗克类调查,我们发现,它们可以显着降低宇宙学约束的欧几里得类调查。因此,目前HMF的精度不足以进行欧几里得、罗马、鲁宾或可能的更大规模的调查。未来的实验将不得不适当地考虑HMF参数的不确定性,并且有必要提高HMF拟合的精度,以避免削弱对宇宙学参数的约束。
The halo mass function (HMF) is a critical element in cosmological analyses of galaxy cluster catalogs. We quantify the impact of uncertainties in HMF parameters on cosmological constraints from cluster catalogs similar to those from Planck, those expected from the Euclid, Roman, and Rubin surveys, and from a hypothetical larger future survey. We analyze simulated catalogs in each case, gradually loosening priors on HMF parameters to evaluate the degradation in cosmological constraints. While current uncertainties on HMF parameters do not substantially impact Planck-like surveys, we find that they can significantly degrade the cosmological constraints for a Euclid-like survey. Consequently, the current precision on the HMF is not sufficient for Euclid, Roman, Rubin or possible larger surveys. Future experiments will have to properly account for uncertainties in HMF parameters, and it will be necessary to improve the precision of HMF fits to avoid weakening constraints on cosmological parameters.
DOI: --
发表时间: 2019-07
期刊: arXiv: Instrumentation and Methods for Astrophysics
影响因子: --
作者:
K. Abazajian;G. Addison;Peter Adshead;Z. Ahmed;S. Allen;D. Alonso;M. Alvarez;A. Anderson;K. Arno
通讯作者: K. Abazajian;G. Addison;Peter Adshead;Z. Ahmed;S. Allen;D. Alonso;M. Alvarez;A. Anderson;K. Arno