Reconciling cosmic dipolar tensions with a gigaparsec void

Abstract

Recent observations indicate a $4.9\sigma$ tension between the CMB and quasar dipoles. This tension challenges the cosmological principle. We propose that if we live in a gigaparsec scale void, the CMB and quasar dipolar tension can be reconciled. This is because we are unlikely to live at the center of the void. And a within 10\% offset from the center will impact the quasars and CMB differently in their dipolar anisotropies. As we consider a large and thick void, our setup can also ease the Hubble tension.

19 pages, 16 figures

References in corpus (22)

• The Clustering of the SDSS DR7 Main Galaxy Sample I: A 4 per cent Distance Measure at z=0.15
• The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background
• The Pantheon+ Analysis: Cosmological Constraints
• DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
• The Pantheon+ Analysis: The Full Dataset and Light-Curve Release
• The trouble with $H_0$
• The CatWISE2020 Catalog
• Is the Observable Universe Consistent with the Cosmological Principle?
• A measurement of secondary cosmic microwave background anisotropies from the 2500-square-degree SPT-SZ survey
• Confronting Lemaitre-Tolman-Bondi models with Observational Cosmology
• A Challenge to the Standard Cosmological Model
• The Local Perspective on the Hubble Tension: Local Structure Does Not Impact Measurement of the Hubble Constant
• CMB anisotropies seen by an off-center observer in a spherically symmetric inhomogeneous universe
• Cosmicflows-4
• Testing the Void against Cosmological data: fitting CMB, BAO, SN and H0
• 21-cm Background Anisotropies Can Discern Primordial Non-Gaussianity
• The supernova Hubble diagram for off-center observers in a spherically symmetric inhomogeneous universe
• Balancing mass and momentum in the Local Group
• On the kinematic cosmic dipole tension
• Gravity in the Local Universe : density and velocity fields using CosmicFlows-4
• A void in the Hubble tension? The end of the line for the Hubble bubble
• Dipole Cosmology: The Copernican Paradigm Beyond FLRW

Cited by in corpus (2)

• Testing the local void hypothesis using baryon acoustic oscillation measurements over the last twenty years
• Testing the local supervoid solution to the Hubble tension with direct distance tracers