# The dipole tension

### APA

Mohayaee, R. (2023). The dipole tension. Perimeter Institute. https://pirsa.org/23100099

### MLA

Mohayaee, Roya. The dipole tension. Perimeter Institute, Oct. 16, 2023, https://pirsa.org/23100099

### BibTex

@misc{ pirsa_PIRSA:23100099, doi = {10.48660/23100099}, url = {https://pirsa.org/23100099}, author = {Mohayaee, Roya}, keywords = {Cosmology}, language = {en}, title = {The dipole tension}, publisher = {Perimeter Institute}, year = {2023}, month = {oct}, note = {PIRSA:23100099 see, \url{https://pirsa.org}} }

Roya Mohayaee Institut d'Astrophysique de Paris

## Abstract

Standard model of cosmology is based on the cosmological principle. The cosmological principle states that the Universe is statistically homogeneous and isotropic on large scales. Is this hypothesis supported by the observations ? After a historical survey of the field, I shall use the high redshift data from radio galaxies and quasars to show that the early Universe does not seem to be isotropic and the rest frame of cosmic microwave background radiation does not coincide with the rest frame of distant sources. I shall also demonstrate that the cosmological principle is violated at a statistical significance of over 5-sigma.

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