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

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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