JOURNAL ARTICLE

Revisiting the Hubble–Lemaître law with Pantheon+ via Gaussian process.

  • Published In: International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology, 2025, v. 34, n. 6. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Feng, Zhihua; Mu, Yuhao; Chang, Baorong; Xu, Lixin 3 of 3

Abstract

In this paper, we reconstruct the observable r obs (z) ≡ (c z ∕ H 0 D P) obs , which corresponds to 1 when the Hubble–Lemaître law (HLL) holds up, from the recently released Pantheon+ supernovae Ia samples via the Gaussian process. In order to test the validity of the HLL, or sort out the redshift range where the HLL holds up, we propose a Kullback–Leibler (KL) divergence like discrete tension T i . We divide the whole redshifts ranging in z ∈ [ 0. 0 0 1 2 2 , 2. 2 6 1 3 7 ] into 10 bins with an equal logarithmic space, and calculate the ratio between the number of data points with value T i ≤ 1 and the total number of data points in each bins. If the consistence criterion is that above 9 0 % data points contained in a redshift range are consistent, one can conclude that the HLL holds up when the redshift is roughly about z ≤ 0. 0 5 2 5 2. [ABSTRACT FROM AUTHOR]

Additional Information

  • Source:International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology. 2025/04, Vol. 34, Issue 6, p1
  • Document Type:Article
  • Subject Area:History
  • Publication Date:2025
  • ISSN:0218-2718
  • DOI:10.1142/S0218271825500269
  • Accession Number:184604062
  • Copyright Statement:Copyright of International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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