Measuring the redshift-space distortions by cross-correlating the density fields before and after reconstruction
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866910916021321728 |
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| author | Zhang, Weibing Zhao, Ruiyang Mu, Xiaoyong Koyama, Kazuya Takahashi, Ryuichi Wang, Yuting Zhao, Gong-Bo |
| author_facet | Zhang, Weibing Zhao, Ruiyang Mu, Xiaoyong Koyama, Kazuya Takahashi, Ryuichi Wang, Yuting Zhao, Gong-Bo |
| contents | In this work, we develop a theoretical model for the cross-power spectrum of the galaxy density field before and after standard baryonic acoustic oscillation (BAO) reconstruction. Using this model, we extract the redshift-space distortion (RSD) parameter from the cross-power spectrum. The model is validated against a suite of high-resolution $N$-body simulations, demonstrating its accuracy and robustness for cosmological analyses. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_08186 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Measuring the redshift-space distortions by cross-correlating the density fields before and after reconstruction Zhang, Weibing Zhao, Ruiyang Mu, Xiaoyong Koyama, Kazuya Takahashi, Ryuichi Wang, Yuting Zhao, Gong-Bo Cosmology and Nongalactic Astrophysics In this work, we develop a theoretical model for the cross-power spectrum of the galaxy density field before and after standard baryonic acoustic oscillation (BAO) reconstruction. Using this model, we extract the redshift-space distortion (RSD) parameter from the cross-power spectrum. The model is validated against a suite of high-resolution $N$-body simulations, demonstrating its accuracy and robustness for cosmological analyses. |
| title | Measuring the redshift-space distortions by cross-correlating the density fields before and after reconstruction |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2502.08186 |