Redshift physics9/25/2023 ![]() However, the intuitive idea of the redshift as the Doppler effect was later abandoned. This observation (called the Hubble-Lemaitre law) was interpreted as the Doppler effect produced by galaxies moving away from the Earth due to the Universe expansion. The possibility that the Universe is really dynamic but not static was later supported by Lemaitre and Hubble, who observed a systematic redshift of nearby galaxies, which was roughly proportional to their distance. Obviously, adopting the conformal FLRW metric for describing the evolution of the Universe has many fundamental cosmological consequences.įriedmann applied the Einstein equations of General Relativity (GR) for describing the Universe and firstly showed that the space filled by uniformly distributed matter might evolve in time. Hence, the discovery of the supernova dimming actually revealed a failure of the FLRW metric and introducing dark energy was just an unsuccessful attempt to cope with the problem within this false metric. By contrast, the conformal FLRW metric fits data well with no need to introduce any new free parameter. The standard FLRW metric produces essential discrepancy with the SNe Ia observations called the ‘supernova dimming’, and dark energy has to be introduced to comply theoretical predictions with data. ![]() The correctness of the proposed conformal metric is convincingly confirmed by Type Ia supernovae (SNe Ia) observations. Consequently, the cosmological time must be identified with the conformal time and the standard FLRW metric must be substituted by its conformal version. ![]() Therefore, the cosmic time runs differently at high redshifts than at present. It is proved that the change in the frequency of redshifted photons is always connected with time dilation, similarly as for the gravitational redshift. The paper shows that the commonly used Friedmann-Lemaitre-Robertson-Walker (FLRW) metric describing the expanding Universe must be modified to properly predict the cosmological redshift.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |