DES Supernovae - Precisely Measured Time Dilation from Universe's Expansion (White & Davis)
Автор: Cosmology Talks
Загружено: 2024-06-19
Просмотров: 1102
Ryan White and Tamara Davis from the Dark Energy Survey tell us about how they have measured time dilation in distant supernovae. This time dilation is precisely what one would expect in an expanding universe. "Precisely" is the right word too, as they have measured this effect to 0.5% precision and they get exactly the number predicted by an expanding universe.
There may be all sorts of tensions popping up for the standard cosmological model ΛCDM, but it seems the expanding universe itself is doing just fine.
Ryan: https://ryanwhite1.github.io/
Tamara: https://people.smp.uq.edu.au/TamaraDa...
The paper: https://arxiv.org/abs/2406.05050
The paper with the \Delta t = (1+z) proof (in appendix A): https://arxiv.org/abs/0804.3595
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