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Studying the Pantheon \(+\) SH0ES dataset, we found a dipole in the luminosity distance relation: its amplitude is partially in agreement with the kinematic dipole present in the cosmic microwave background, while its direction differs significantly by more than \(3\sigma \) . A bulk motion larger than the standard \(\Lambda \) CDM expectation arises as a possible explanation.

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What the Bulk, Pantheon \(+\) !

  • 会议论文

  • 发表日期：

    2025年

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  • Francesco Sorrenti

摘要

Studying the Pantheon \(+\) SH0ES dataset, we found a dipole in the luminosity distance relation: its amplitude is partially in agreement with the kinematic dipole present in the cosmic microwave background, while its direction differs significantly by more than \(3\sigma \) . A bulk motion larger than the standard \(\Lambda \) CDM expectation arises as a possible explanation.