Two-fold theoretical and experimental misinterpretation of luminosity in
  the origin of Hubble tension
  The comparison of the intrinsic luminosity of extragalactic objects detected
at different redshifts requires the evaluation of the observed flux in a common
rest-frame emission band. It is usually performed by adding a term to the
observed magnitudes denominated K-correction. In this paper, the K-correction
transformation has been carefully scrutinized. As a result of this inspection,
it has been found that K-corrections systematically downgrades the measured
energy flux by a factor of (1+z). C-correction, a more appropriate rest-frame
magnitude transformation has been derived. C-correction has been applied to the
re-analysis of JLA (Joint Light-curve analysis) supernovae sample. The best
cosmological fit to JLA type Ia supernovae (SNIa) sample calibrated with CMB
Planck $h=0.675$ for the common luminosity-angular 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
luminosity-angular 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.
