Daniel PomarèdeMay 29, 2024

in the #arXiv

Status of the ΛCDM theory: supporting evidence and anomalies

by Jim Peebles
https://arxiv.org/abs/2405.18307

#Peebles #JimPeebles #ΛCDM #theory #Cosmology #astronomy #astrophysics #astrodon #science #research #philosophy #history #BigBang #astroph

Status of the LambdaCDM theory: supporting evidence and anomalies

The standard LambdaCDM cosmology passes demanding tests that establish it as a good approximation to reality. It is incomplete, with open questions and anomalies, but the same is true of all our physical theories. The anomalies in the standard cosmology might guide us to an even better theory. It has happened before.

arXiv.org
Daniel PomarèdeMay 3, 2024

Great Nature News Feature article on the recent DESI Survey results on dark energy

With a final quote by Jim Peebles: “I find it very difficult to imagine that ΛCDM is the end of the story. It’s too simple.”

https://www.nature.com/articles/d41586-024-01273-4

#Cosmology #DarkEnergy #ΛCDM #JimPeebles #DESI #survey #DESIsurvey #BAO #BaryonAcousticOscillations #galaxies #astronomy #astrophysics #astrodon #Nature #news #science

Dark energy is tearing the Universe apart. What if the force is weakening?

The first set of results from a pioneering cosmic-mapping project hints that the repulsive force known as dark energy has changed over 11 billion years, which would alter ideas about how the Universe has evolved and what its future will be.

Show threadDaniel PomarèdeApr 15, 2024

First talk by Jim Peebles on the Status of the LCDM theory: supporting evidence and anomalies

... including an update of the evidence of large-scale sheet-like patterns in the space distributions of galaxies, clusters of galaxies, and quasars.

https://royalsociety.org/science-events-and-lectures/2024/04/cosmological-model/

#cosmology #LCDM #theory #JimPeebles #galaxies #galaxyclusters #quasars

Challenging the standard cosmological model | Royal Society

Scientific discussion meeting organised by Professor James Binney FRS, Dr Roya Mohayaee, Professor John Peacock FRS and Professor Subir Sarkar.

Daniel PomarèdeFeb 22, 2024

Very interesting paper by @govertschilling for Sky and Telescope, on the discovery of the Big Ring by @morninglopez et al., with quotes from Jim Peebles (“I am hoping for anomalies that could prove to be empirical hints to a better theory”), Carlos Frenk, and Rien van de Weijgaert.

https://skyandtelescope.org/astronomy-news/astronomers-find-big-ring-1-3-billion-light-years-across/

#cosmology #bigring #giantarc #galaxies #quasars #standardmodel #ɅCDM #JimPeebles #NobelPrize #physics #BigBang #astronomy #astrophyscis #astrodon #science #space #news #research #STEM

Astronomers Find "Big Ring" 1.3 Billion Light-Years Across

Standard cosmological scenarios might not explain the breadth of a gigantic cosmic structure that astronomers recently discovered.

Sky & Telescope