Measuring the Redshift-space Distortions by Cross-correlating the Density Fields Before and After Reconstruction
In this work, we develop a theoretical model for the cross-power spectrum of the matter density field before and after standard baryonic acoustic oscillation reconstruction. Using this model, we extract the redshift-space distortion parameter from the cross-power spectrum. The model is validated aga...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/adcf21 |
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| author | Weibing Zhang Ruiyang Zhao Xiaoyong Mu Kazuya Koyama Ryuichi Takahashi Yuting Wang Gong-Bo Zhao |
| author_facet | Weibing Zhang Ruiyang Zhao Xiaoyong Mu Kazuya Koyama Ryuichi Takahashi Yuting Wang Gong-Bo Zhao |
| author_sort | Weibing Zhang |
| collection | DOAJ |
| description | In this work, we develop a theoretical model for the cross-power spectrum of the matter density field before and after standard baryonic acoustic oscillation reconstruction. Using this model, we extract the redshift-space distortion 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 | Article |
| id | doaj-art-4bd73e1c2a974bc9babce7a4417b2cfa |
| institution | DOAJ |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-4bd73e1c2a974bc9babce7a4417b2cfa2025-08-20T03:05:43ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01985221810.3847/1538-4357/adcf21Measuring the Redshift-space Distortions by Cross-correlating the Density Fields Before and After ReconstructionWeibing Zhang0https://orcid.org/0000-0001-6613-2709Ruiyang Zhao1Xiaoyong Mu2Kazuya Koyama3Ryuichi Takahashi4https://orcid.org/0000-0001-6021-0147Yuting Wang5https://orcid.org/0000-0001-7756-8479Gong-Bo Zhao6https://orcid.org/0000-0003-4726-6714National Astronomical Observatories, Chinese Academy of Sciences , Beijing, 100101, People’s Republic of China ; gbzhao@nao.cas.cn; School of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Beijing, 100049, People’s Republic of ChinaNational Astronomical Observatories, Chinese Academy of Sciences , Beijing, 100101, People’s Republic of China ; gbzhao@nao.cas.cn; School of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Beijing, 100049, People’s Republic of China; Institute of Cosmology and Gravitation, University of Portsmouth , Dennis Sciama Building, Portsmouth PO1 3FX, UKNational Astronomical Observatories, Chinese Academy of Sciences , Beijing, 100101, People’s Republic of China ; gbzhao@nao.cas.cn; School of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Beijing, 100049, People’s Republic of ChinaInstitute of Cosmology and Gravitation, University of Portsmouth , Dennis Sciama Building, Portsmouth PO1 3FX, UKFaculty of Science and Technology, Hirosaki University , 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, JapanNational Astronomical Observatories, Chinese Academy of Sciences , Beijing, 100101, People’s Republic of China ; gbzhao@nao.cas.cn; Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University , Beijing, 102206, People’s Republic of ChinaNational Astronomical Observatories, Chinese Academy of Sciences , Beijing, 100101, People’s Republic of China ; gbzhao@nao.cas.cn; School of Astronomy and Space Sciences, University of Chinese Academy of Sciences , Beijing, 100049, People’s Republic of China; Institute for Frontiers in Astronomy and Astrophysics, Beijing Normal University , Beijing, 102206, People’s Republic of ChinaIn this work, we develop a theoretical model for the cross-power spectrum of the matter density field before and after standard baryonic acoustic oscillation reconstruction. Using this model, we extract the redshift-space distortion 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.https://doi.org/10.3847/1538-4357/adcf21Redshift surveysCosmological modelsCosmological perturbation theoryBaryon acoustic oscillations |
| spellingShingle | Weibing Zhang Ruiyang Zhao Xiaoyong Mu Kazuya Koyama Ryuichi Takahashi Yuting Wang Gong-Bo Zhao Measuring the Redshift-space Distortions by Cross-correlating the Density Fields Before and After Reconstruction The Astrophysical Journal Redshift surveys Cosmological models Cosmological perturbation theory Baryon acoustic oscillations |
| title | Measuring the Redshift-space Distortions by Cross-correlating the Density Fields Before and After Reconstruction |
| title_full | Measuring the Redshift-space Distortions by Cross-correlating the Density Fields Before and After Reconstruction |
| title_fullStr | Measuring the Redshift-space Distortions by Cross-correlating the Density Fields Before and After Reconstruction |
| title_full_unstemmed | Measuring the Redshift-space Distortions by Cross-correlating the Density Fields Before and After Reconstruction |
| title_short | Measuring the Redshift-space Distortions by Cross-correlating the Density Fields Before and After Reconstruction |
| title_sort | measuring the redshift space distortions by cross correlating the density fields before and after reconstruction |
| topic | Redshift surveys Cosmological models Cosmological perturbation theory Baryon acoustic oscillations |
| url | https://doi.org/10.3847/1538-4357/adcf21 |
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