Cosmology using long gamma-ray bursts: statistical analysis of errors in calibrated data

• 来源期刊: 天文和天体物理学研究
• 年，卷（期）: 2019,（2）
• 页码范围: 141-148
• 页数: 8页
• 语种: 英文
• DOI: 10.1088/1674-4527/19/2/28

摘要

We investigate direction dependence and non-Gaussian features in high-z cosmological data using △x2 and △x statistics and the Kolmogorov-Smirnov test.These techniques are applied on a set of calibrated long gamma-ray bursts (GRBs) and its combination with recent Type Ia supernovae data (Union2).Our statistical analysis shows a weak but consistent direction dependence in both the data sets.The analysis also indicates a non-Gaussian nature of errors in both data sets.