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Sarracino, Giuseppe; Spallicci, Alessandro D. A. M.; Capozziello, Salvatore
European physical journal plus, 29/12, Volume: 137, Issue: 12Journal Article
Following results presented in Spallicci et al. (Eur Phys J Plus 137, 2022) 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 C and an additional frequency shift z 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 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 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.
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