Effect of redshift distributions of fast radio bursts on cosmological constraints

被引:15
作者
Qiang, Da-Chun [1 ]
Wei, Hao [1 ]
机构
[1] Beijing Inst Technol, Sch Phys, Beijing 100081, Peoples R China
关键词
GAMMA-RAY BURSTS; REIONIZATION HISTORY; DISPERSION MEASURE; HOST GALAXY; BARYONS; UNIVERSES; EMISSION; CENSUS; FUTURE;
D O I
10.1103/PhysRevD.103.083536
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Nowadays, fast radio bursts (FRBs) have been a promising probe for astronomy and cosmology. However, it is not easy to identify the redshifts of FRBs to date. Thus, no sufficient actual FRBs with identified redshifts can be used to study cosmology currently. In the past years, one has to use the simulated FRBs with "known" redshifts instead. To simulate an FRB, one should randomly assign a redshift to it from a given redshift distribution. But the actual redshift distribution of FRBs is still unknown so far. Therefore, many redshift distributions have been assumed in the literature. In the present work, we study the effect of various redshift distributions on cosmological constraints, while they are treated equally. We find that different redshift distributions lead to different cosmological constraining abilities from the simulated FRBs. This result emphasizes the importance to find the actual redshift distribution of FRBs, and reminds us of the possible bias in the FRB simulations due to the redshift distributions.
引用
收藏
页数:14
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