Reconstructing the cosmic expansion history up to redshift z=6.29 with the calibrated gamma-ray bursts

Hao Wei*, Shuang Nan Zhang

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

47 引用 (Scopus)

摘要

Recently, Gamma-Ray Bursts (GRBs) were proposed to be a complementary cosmological probe to type Ia supernovae (SNIa). GRBs have been advocated to be standard candles since several empirical GRB luminosity relations were proposed as distance indicators. However, there is a so-called circularity problem in the direct use of GRBs. Recently, a new idea to calibrate GRBs in a completely cosmology independent manner has been proposed, and the circularity problem can be solved. In the present work, following the method proposed by Liang et al., we calibrate 70 GRBs with the Amati relation using 307 SNIa. Then, following the method proposed by Shafieloo et al., we smoothly reconstruct the cosmic expansion history up to redshift z=6.29 with the calibrated GRBs. We find some new features in the reconstructed results.

源语言英语
页(从-至)139-147
页数9
期刊European Physical Journal C
63
1
DOI
出版状态已出版 - 9月 2009

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