Cosmological dipole in tilted anisotropic universes
Abstract
There is tentative evidence for a mismatch between the rest frames of matter and the cosmic microwave background, the “quasar dipole anomaly.” We consider such a dipole in tilted anisotropic models, for a range of scenarios and sources: spatial curvature, cosmic heat flux, large scale electromagnetic fields, and a Khronon field. Crucially, we determine the ancillary effects on other cosmological observables in each of these models, and we show that, apart from the case of the Khronon field, it is unlikely that one can obtain a dipole with the amplitude that is being observed unless one considers additional exotica.
Fields of Study & Subjects
Cosmology and Gravitation Theories
Relativity and Gravitational Theory
Electrical and Electromagnetic Research
Publication details
- Journal / source
- Physical review. D/Physical review. D.
- Volume
- 114
- Issue
- 2
- Publication date
- 17 June 2026
- Language
- EN