Constraints on cosmology beyond $Λ$CDM with kinetic Sunyaev Zel'dovich velocity reconstruction
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| Formato: | Preprint |
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2024
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| _version_ | 1866914908694642688 |
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| author | Krywonos, Jordan Hotinli, Selim C. Johnson, Matthew C. |
| author_facet | Krywonos, Jordan Hotinli, Selim C. Johnson, Matthew C. |
| contents | Kinetic Sunyaev Zel'dovich velocity reconstruction uses the statistically anisotropic cross-correlation between cosmic microwave background (CMB) temperature anisotropies and a galaxy survey to reconstruct the remotely observed CMB dipole. Using a reconstruction based on data from $\textit{Planck}$ and unWISE, we rule out non-linear Gpc-scale voids, provide the tightest constraint on the intrinsic dipole ($<14 \ {\rm km/s}$ at $68\%$ confidence), rule out matter-radiation isocurvature as an explanation of discrepancies between the measured CMB and galaxy number count dipoles, and constrain the amplitude of local-type primordial non-Gaussianity ($-220\lesssim f_{\rm NL}\lesssim 136$ at $68\%$ confidence) and compensated isocurvature ($-147\lesssim A_{\rm CIP} \lesssim 281$ at $68\%$ confidence). This representative set of constraints on beyond-$Λ$CDM scenarios demonstrates the breadth of fundamental science possible with measurements of secondary CMB anisotropies such as the kinetic Sunyaev Zel'dovich effect. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_05264 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Constraints on cosmology beyond $Λ$CDM with kinetic Sunyaev Zel'dovich velocity reconstruction Krywonos, Jordan Hotinli, Selim C. Johnson, Matthew C. Cosmology and Nongalactic Astrophysics Kinetic Sunyaev Zel'dovich velocity reconstruction uses the statistically anisotropic cross-correlation between cosmic microwave background (CMB) temperature anisotropies and a galaxy survey to reconstruct the remotely observed CMB dipole. Using a reconstruction based on data from $\textit{Planck}$ and unWISE, we rule out non-linear Gpc-scale voids, provide the tightest constraint on the intrinsic dipole ($<14 \ {\rm km/s}$ at $68\%$ confidence), rule out matter-radiation isocurvature as an explanation of discrepancies between the measured CMB and galaxy number count dipoles, and constrain the amplitude of local-type primordial non-Gaussianity ($-220\lesssim f_{\rm NL}\lesssim 136$ at $68\%$ confidence) and compensated isocurvature ($-147\lesssim A_{\rm CIP} \lesssim 281$ at $68\%$ confidence). This representative set of constraints on beyond-$Λ$CDM scenarios demonstrates the breadth of fundamental science possible with measurements of secondary CMB anisotropies such as the kinetic Sunyaev Zel'dovich effect. |
| title | Constraints on cosmology beyond $Λ$CDM with kinetic Sunyaev Zel'dovich velocity reconstruction |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2408.05264 |