The Cosmological Dipole in Tilted Anisotropic Universes
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866911300455497728 |
|---|---|
| author | Martín, Alicia Skordis, Constantinos Bartlett, Deaglan J. Desmond, Harry Ferreira, Pedro G. Yasin, Tariq |
| author_facet | Martín, Alicia Skordis, Constantinos Bartlett, Deaglan J. Desmond, Harry Ferreira, Pedro G. Yasin, Tariq |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_03867 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The Cosmological Dipole in Tilted Anisotropic Universes Martín, Alicia Skordis, Constantinos Bartlett, Deaglan J. Desmond, Harry Ferreira, Pedro G. Yasin, Tariq Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology 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. |
| title | The Cosmological Dipole in Tilted Anisotropic Universes |
| topic | Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2512.03867 |