Evidence for a Dipole Anisotropy in Hubble Tension Residuals
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| Format: | Recurso digital |
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Zenodo
2026
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| _version_ | 1866901184642547712 |
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| author | Morris, Jamie |
| author_facet | Morris, Jamie |
| contents | <p>We investigate whether statistical tension between local and early-universe measurements of the Hubble constant exhibits angular structure on the sky. Analyzing a curated set of contemporaneous measurements, we study the sky dependence of a tension residual statistic using correlation analysis and dipole modeling.</p> <p>We find evidence for a dipole-like anisotropy in the residuals, with a preferred axis identified in equatorial coordinates. The signal is stable under leave-one-out resampling and is unlikely to arise from random sky alignments, as assessed by Monte Carlo sky-rotation tests. Distance dependence is weak, suggesting the effect is primarily angular rather than radial.</p> <p>The result is presented as exploratory and may reflect survey geometry, method-dependent sky coverage, correlated systematics, or structured regularization in joint inference. No claim of anisotropic cosmic expansion is made. This work highlights the importance of considering angular structure when interpreting cosmological parameter tensions.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_18404988 |
| institution | Zenodo |
| language | |
| publishDate | 2026 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Evidence for a Dipole Anisotropy in Hubble Tension Residuals Morris, Jamie <p>We investigate whether statistical tension between local and early-universe measurements of the Hubble constant exhibits angular structure on the sky. Analyzing a curated set of contemporaneous measurements, we study the sky dependence of a tension residual statistic using correlation analysis and dipole modeling.</p> <p>We find evidence for a dipole-like anisotropy in the residuals, with a preferred axis identified in equatorial coordinates. The signal is stable under leave-one-out resampling and is unlikely to arise from random sky alignments, as assessed by Monte Carlo sky-rotation tests. Distance dependence is weak, suggesting the effect is primarily angular rather than radial.</p> <p>The result is presented as exploratory and may reflect survey geometry, method-dependent sky coverage, correlated systematics, or structured regularization in joint inference. No claim of anisotropic cosmic expansion is made. This work highlights the importance of considering angular structure when interpreting cosmological parameter tensions.</p> |
| title | Evidence for a Dipole Anisotropy in Hubble Tension Residuals |
| url | https://doi.org/10.5281/zenodo.18404988 |