Twofold theoretical and experimental misinterpretation of luminosity in the origin of Hubble tension
Abstract
The comparison of the intrinsic luminosity of extragalactic objects detected at different redshifts requires the evaluation of the observed flux in a common restframe emission band. It is usually performed by adding a term to the observed magnitudes denominated Kcorrection. In this paper, the Kcorrection transformation has been carefully scrutinized. As a result of this inspection, it has been found that Kcorrections systematically downgrades the measured energy flux by a factor of (1+z). Ccorrection, a more appropriate restframe magnitude transformation has been derived. Ccorrection has been applied to the reanalysis of JLA (Joint Lightcurve analysis) supernovae sample. The best cosmological fit to JLA type Ia supernovae (SNIa) sample calibrated with CMB Planck $h=0.675$ for the common luminosityangular distances relation $L2:D_L=D_A(1+z)^2$ corresponds to a closed Universe $L2(h_0=0.48,\Omega_M=2.25$). Nevertheless, considering the new luminosityangular distances relation $L1:D_L=D_A(1+z)$ that accounts for expansion lensing, the new SNIa analysis converges to $L1(h_0=0.7558,\Omega_M=0.035,\Omega_\Lambda=0.965)$, providing a coherent explanation of the Hubble tension between Planck and SH0ES ($h=0.7422 \pm 0.0182$) results.
 Publication:

arXiv eprints
 Pub Date:
 March 2022
 DOI:
 10.48550/arXiv.2203.01417
 arXiv:
 arXiv:2203.01417
 Bibcode:
 2022arXiv220301417D
 Keywords:

 Astrophysics  Cosmology and Nongalactic Astrophysics
 EPrint:
 Minor changes with respect to previous version