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arXiv · 2211.06857

Reconciling cosmic dipolar tensions with a gigaparsec void

Tingqi Cai·Qianhang Ding·Yi Wang
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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.

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Tingqi Cai, Qianhang Ding, Yi Wang. 2022-11-13. Reconciling cosmic dipolar tensions with a gigaparsec void. https://doi.org/10.1103/physrevd.111.103502

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