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Journal Articles The European Physical Journal Plus Year : 2022

Investigating dark energy by electromagnetic frequency shifts II: the Pantheon+ sample

Abstract

Following results presented in Eur. Phys. J. Plus, {\bf 137} (2022) 253 by the same authors, we investigate the observed red shift $z$, working under the hypothesis that it might be composed by the expansion red shift $z_{\rm C}$ and an additional frequency shift $z_{\rm S}$, towards the red or the blue, due to Extended Theories of Electromagnetism (ETE). We have tested this prediction considering the novel Pantheon+ Catalogue, composed by 1701 light curves collected by 1550 SNe Ia, and 16 BAO data, for different cosmological models characterised by the absence of a dark energy component. In particular, we shall derive which values of $z_{\rm S}$ match the observations, comparing the new results with the ones obtained considering the older Pantheon Catalogue. We find interesting differences in the resulting $z_{\rm S}$ distributions, highlighted in the text. Later, we also add a discussion regarding Extended Theories of Gravity and how to incorporate them in our methodology.

Dates and versions

hal-03892313 , version 1 (09-12-2022)

Identifiers

Cite

Giuseppe Sarracino, Alessandro D.A. M. Spallicci, Salvatore Capozziello. Investigating dark energy by electromagnetic frequency shifts II: the Pantheon+ sample. The European Physical Journal Plus, 2022, 137 (12), pp.1386. ⟨10.1140/epjp/s13360-022-03595-6⟩. ⟨hal-03892313⟩
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