H i Intensity Mapping Cross-correlation with Thermal Sunyaev–Zel’dovich Fluctuations: Forecasted Cosmological Parameter Estimation for FAST and Planck
The 21 cm emission from neutral hydrogen surveys holds great potential as a valuable method for exploring the large-scale structure (LSS) of the Universe. In this paper, we forecast for the cross-correlation between the thermal Sunyaev–Zel’dovich (SZ) fluctuations as probed by the Planck satellite a...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
|
| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/ad91a4 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850149666653470720 |
|---|---|
| author | Ayodeji Ibitoye Furen Deng Yichao Li Yin-Zhe Ma Yan Gong Xuelei Chen |
| author_facet | Ayodeji Ibitoye Furen Deng Yichao Li Yin-Zhe Ma Yan Gong Xuelei Chen |
| author_sort | Ayodeji Ibitoye |
| collection | DOAJ |
| description | The 21 cm emission from neutral hydrogen surveys holds great potential as a valuable method for exploring the large-scale structure (LSS) of the Universe. In this paper, we forecast for the cross-correlation between the thermal Sunyaev–Zel’dovich (SZ) fluctuations as probed by the Planck satellite and fluctuations in the H i brightness temperature as probed by the ground-based Five-hundred-meter Aperture Spherical Telescope to trace the connection between galaxy clusters and the H i LSS. Assuming that the measurement is limited by instrumental noise rather than by foreground, we estimate the potential detectability of the cross-correlation signal and the improvement in the measurement of the H i cosmic density, the hydrostatic mass bias parameter, and the universal pressure profile parameters. We obtain a constraint on the cosmic neutral hydrogen density parameter significantly to σ (Ω _H I ) = 1.0 × 10 ^−6 . We also find that the average halo masses contributing to the H i − y cross-power spectrum in the one-halo regime is ∼1.5 × 10 ^14 M _⊙ . Our results also show that the H i –SZ cross-correlation has great potential to probe the distribution of neutral hydrogen (H i ) within halos at low redshift. |
| format | Article |
| id | doaj-art-0204b45c432b4ae38dcdcb1b62c518ec |
| institution | OA Journals |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-0204b45c432b4ae38dcdcb1b62c518ec2025-08-20T02:26:49ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01978215910.3847/1538-4357/ad91a4H i Intensity Mapping Cross-correlation with Thermal Sunyaev–Zel’dovich Fluctuations: Forecasted Cosmological Parameter Estimation for FAST and PlanckAyodeji Ibitoye0https://orcid.org/0000-0002-0966-8598Furen Deng1https://orcid.org/0000-0001-8075-0909Yichao Li2https://orcid.org/0000-0003-1962-2013Yin-Zhe Ma3https://orcid.org/0000-0001-8108-0986Yan Gong4https://orcid.org/0000-0003-0709-0101Xuelei Chen5https://orcid.org/0000-0001-6475-8863National Astronomical Observatories, Chinese Academy of Sciences , 20A Datun Road, Chaoyang District, Beijing 100101, People’s Republic of China ; astro.ayodejiibitoye@gmail.com, xuelei@cosmology.bao.ac.cn; Department of Physics, Guangdong Technion – Israel Institute of Technology , Shantou, Guangdong 515063, People’s Republic of China; Centre for Space Research, North-West University , Potchefstroom 2520, South Africa; Department of Physics and Electronics, Adekunle Ajasin University , P. M. B. 001, Akungba-Akoko, Ondo State, NigeriaNational Astronomical Observatories, Chinese Academy of Sciences , 20A Datun Road, Chaoyang District, Beijing 100101, People’s Republic of China ; astro.ayodejiibitoye@gmail.com, xuelei@cosmology.bao.ac.cn; School of Astronomy and Space Science, University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of China ; Institute of Astronomy, University of Cambridge , Madingley Road, Cambridge, CB3 0HA, UKKey Laboratory of Cosmology and Astrophysics (Liaoning) & College of Sciences, Northeastern University , Shenyang 110819, People's Republic of ChinaDepartment of Physics, Stellenbosch University , Matieland, Western Cape, 7602, South AfricaNational Astronomical Observatories, Chinese Academy of Sciences , 20A Datun Road, Chaoyang District, Beijing 100101, People’s Republic of China ; astro.ayodejiibitoye@gmail.com, xuelei@cosmology.bao.ac.cn; School of Astronomy and Space Science, University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of China National Astronomical Observatories, Chinese Academy of Sciences , 20A Datun Road, Chaoyang District, Beijing 100101, People’s Republic of China ; astro.ayodejiibitoye@gmail.com, xuelei@cosmology.bao.ac.cn; School of Astronomy and Space Science, University of Chinese Academy of Sciences , Beijing 100049, People’s Republic of China ; Key Laboratory of Cosmology and Astrophysics (Liaoning) & College of Sciences, Northeastern University , Shenyang 110819, People's Republic of China; Key Laboratory of Radio Astronomy and Technology, Chinese Academy of Sciences , Beijing 100101, People's Republic of ChinaThe 21 cm emission from neutral hydrogen surveys holds great potential as a valuable method for exploring the large-scale structure (LSS) of the Universe. In this paper, we forecast for the cross-correlation between the thermal Sunyaev–Zel’dovich (SZ) fluctuations as probed by the Planck satellite and fluctuations in the H i brightness temperature as probed by the ground-based Five-hundred-meter Aperture Spherical Telescope to trace the connection between galaxy clusters and the H i LSS. Assuming that the measurement is limited by instrumental noise rather than by foreground, we estimate the potential detectability of the cross-correlation signal and the improvement in the measurement of the H i cosmic density, the hydrostatic mass bias parameter, and the universal pressure profile parameters. We obtain a constraint on the cosmic neutral hydrogen density parameter significantly to σ (Ω _H I ) = 1.0 × 10 ^−6 . We also find that the average halo masses contributing to the H i − y cross-power spectrum in the one-halo regime is ∼1.5 × 10 ^14 M _⊙ . Our results also show that the H i –SZ cross-correlation has great potential to probe the distribution of neutral hydrogen (H i ) within halos at low redshift.https://doi.org/10.3847/1538-4357/ad91a4Sunyaev-Zeldovich effectRadio astronomyH I line emission |
| spellingShingle | Ayodeji Ibitoye Furen Deng Yichao Li Yin-Zhe Ma Yan Gong Xuelei Chen H i Intensity Mapping Cross-correlation with Thermal Sunyaev–Zel’dovich Fluctuations: Forecasted Cosmological Parameter Estimation for FAST and Planck The Astrophysical Journal Sunyaev-Zeldovich effect Radio astronomy H I line emission |
| title | H i Intensity Mapping Cross-correlation with Thermal Sunyaev–Zel’dovich Fluctuations: Forecasted Cosmological Parameter Estimation for FAST and Planck |
| title_full | H i Intensity Mapping Cross-correlation with Thermal Sunyaev–Zel’dovich Fluctuations: Forecasted Cosmological Parameter Estimation for FAST and Planck |
| title_fullStr | H i Intensity Mapping Cross-correlation with Thermal Sunyaev–Zel’dovich Fluctuations: Forecasted Cosmological Parameter Estimation for FAST and Planck |
| title_full_unstemmed | H i Intensity Mapping Cross-correlation with Thermal Sunyaev–Zel’dovich Fluctuations: Forecasted Cosmological Parameter Estimation for FAST and Planck |
| title_short | H i Intensity Mapping Cross-correlation with Thermal Sunyaev–Zel’dovich Fluctuations: Forecasted Cosmological Parameter Estimation for FAST and Planck |
| title_sort | h i intensity mapping cross correlation with thermal sunyaev zel dovich fluctuations forecasted cosmological parameter estimation for fast and planck |
| topic | Sunyaev-Zeldovich effect Radio astronomy H I line emission |
| url | https://doi.org/10.3847/1538-4357/ad91a4 |
| work_keys_str_mv | AT ayodejiibitoye hiintensitymappingcrosscorrelationwiththermalsunyaevzeldovichfluctuationsforecastedcosmologicalparameterestimationforfastandplanck AT furendeng hiintensitymappingcrosscorrelationwiththermalsunyaevzeldovichfluctuationsforecastedcosmologicalparameterestimationforfastandplanck AT yichaoli hiintensitymappingcrosscorrelationwiththermalsunyaevzeldovichfluctuationsforecastedcosmologicalparameterestimationforfastandplanck AT yinzhema hiintensitymappingcrosscorrelationwiththermalsunyaevzeldovichfluctuationsforecastedcosmologicalparameterestimationforfastandplanck AT yangong hiintensitymappingcrosscorrelationwiththermalsunyaevzeldovichfluctuationsforecastedcosmologicalparameterestimationforfastandplanck AT xueleichen hiintensitymappingcrosscorrelationwiththermalsunyaevzeldovichfluctuationsforecastedcosmologicalparameterestimationforfastandplanck |