Cosmology using long gamma-ray bursts: statistical analysis of errors in calibrated data
Abstract
We investigate direction dependence and non-Gaussian features in high-z cosmological data using Δ χ 2 and Δ χ 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.
- Publication:
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Research in Astronomy and Astrophysics
- Pub Date:
- February 2019
- DOI:
- 10.1088/1674-4527/19/2/28
- Bibcode:
- 2019RAA....19...28S