Tension in the recent Type Ia supernovae datasets

Hao Wei

doi:10.1016/j.physletb.2010.03.015

Tension in the recent Type Ia supernovae datasets

Hao Wei^*

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article › peer-review

35 Citations (Scopus)

Abstract

In the present work, we investigate the tension in the recent Type Ia supernovae (SNIa) datasets Constitution and Union. We show that they are in tension not only with the observations of the cosmic microwave background (CMB) anisotropy and the baryon acoustic oscillations (BAO), but also with other SNIa datasets such as Davis and SNLS. Then, we find the main sources responsible for the tension. Further, we make this more robust by employing the method of random truncation. Based on the results of this work, we suggest two truncated versions of the Union and Constitution datasets, namely the UnionT and ConstitutionT SNIa samples, whose behaviors are more regular.

Original language	English
Pages (from-to)	286-293
Number of pages	8
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	687
Issue number	4-5
DOIs	https://doi.org/10.1016/j.physletb.2010.03.015
Publication status	Published - 19 Apr 2010

Keywords

Cosmology
Dark energy
Type Ia supernovae datasets

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10.1016/j.physletb.2010.03.015

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KW - Dark energy

KW - Type Ia supernovae datasets

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Tension in the recent Type Ia supernovae datasets

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Keywords

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