The Atacama Cosmology Telescope: DR6 Gravitational Lensing and SDSS BOSS cross-correlation measurement and constraints on gravity with the $E_G$ statistic
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2024
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| author | Wenzl, Lukas An, Rui Battaglia, Nick Bean, Rachel Calabrese, Erminia Chen, Shi-Fan Choi, Steve K. Darwish, Omar Dunkley, Jo Farren, Gerrit S. Ferraro, Simone Guan, Yilun Harrison, Ian Kim, Joshua Louis, Thibaut MacCrann, Niall Madhavacheril, Mathew S. Marques, Gabriela A. Mehta, Yogesh Niemack, Michael D. Qu, Frank J. Sehgal, Neelima Shaikh, Shabbir Sherwin, Blake D. Sifón, Cristóbal van Engelen, Alexander Wollack, Edward J. |
| author_facet | Wenzl, Lukas An, Rui Battaglia, Nick Bean, Rachel Calabrese, Erminia Chen, Shi-Fan Choi, Steve K. Darwish, Omar Dunkley, Jo Farren, Gerrit S. Ferraro, Simone Guan, Yilun Harrison, Ian Kim, Joshua Louis, Thibaut MacCrann, Niall Madhavacheril, Mathew S. Marques, Gabriela A. Mehta, Yogesh Niemack, Michael D. Qu, Frank J. Sehgal, Neelima Shaikh, Shabbir Sherwin, Blake D. Sifón, Cristóbal van Engelen, Alexander Wollack, Edward J. |
| contents | We derive new constraints on the $E_G$ statistic as a test of gravity, combining the CMB lensing map estimated from Data Release 6 (DR6) of the Atacama Cosmology Telescope with SDSS BOSS CMASS and LOWZ galaxy data. We develop an analysis pipeline to measure the cross-correlation between CMB lensing maps and galaxy data, following a blinding policy and testing the approach through null and consistency checks. By testing the equivalence of the spatial and temporal gravitational potentials, the $E_G$ statistic can distinguish $Λ$CDM from alternative models of gravity. We find $E_G= 0.31^{+0.06}_{-0.05}$ for ACT and CMASS data at 68.28\% confidence level, and $E_G = 0.49^{+0.14}_{-0.11}$ for ACT and LOWZ. Systematic errors are estimated to be 3\% and 4\% respectively. Including CMB lensing information from Planck PR4 results in $E_G = 0.34^{+0.05}_{-0.05}$ with CMASS and $E_G= 0.43^{+0.11}_{-0.09}$ with LOWZ. These are consistent with predictions for the $Λ$CDM model that best fits the Planck CMB anisotropy and SDSS BOSS BAO, where $E_G^{\rm GR} (z_{\rm eff} = 0.555) = 0.401\pm 0.005$ for CMB lensing combined with CMASS and $E_G^{\rm GR} (z_{\rm eff} = 0.316) = 0.452\pm0.005$ combined with LOWZ. We also find $E_G$ to be scale independent, with PTE $>5\%$, as predicted by general relativity. The methods developed in this work are also applicable to improved future analyses with upcoming spectroscopic galaxy samples and CMB lensing measurements. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2405_12795 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The Atacama Cosmology Telescope: DR6 Gravitational Lensing and SDSS BOSS cross-correlation measurement and constraints on gravity with the $E_G$ statistic Wenzl, Lukas An, Rui Battaglia, Nick Bean, Rachel Calabrese, Erminia Chen, Shi-Fan Choi, Steve K. Darwish, Omar Dunkley, Jo Farren, Gerrit S. Ferraro, Simone Guan, Yilun Harrison, Ian Kim, Joshua Louis, Thibaut MacCrann, Niall Madhavacheril, Mathew S. Marques, Gabriela A. Mehta, Yogesh Niemack, Michael D. Qu, Frank J. Sehgal, Neelima Shaikh, Shabbir Sherwin, Blake D. Sifón, Cristóbal van Engelen, Alexander Wollack, Edward J. Cosmology and Nongalactic Astrophysics We derive new constraints on the $E_G$ statistic as a test of gravity, combining the CMB lensing map estimated from Data Release 6 (DR6) of the Atacama Cosmology Telescope with SDSS BOSS CMASS and LOWZ galaxy data. We develop an analysis pipeline to measure the cross-correlation between CMB lensing maps and galaxy data, following a blinding policy and testing the approach through null and consistency checks. By testing the equivalence of the spatial and temporal gravitational potentials, the $E_G$ statistic can distinguish $Λ$CDM from alternative models of gravity. We find $E_G= 0.31^{+0.06}_{-0.05}$ for ACT and CMASS data at 68.28\% confidence level, and $E_G = 0.49^{+0.14}_{-0.11}$ for ACT and LOWZ. Systematic errors are estimated to be 3\% and 4\% respectively. Including CMB lensing information from Planck PR4 results in $E_G = 0.34^{+0.05}_{-0.05}$ with CMASS and $E_G= 0.43^{+0.11}_{-0.09}$ with LOWZ. These are consistent with predictions for the $Λ$CDM model that best fits the Planck CMB anisotropy and SDSS BOSS BAO, where $E_G^{\rm GR} (z_{\rm eff} = 0.555) = 0.401\pm 0.005$ for CMB lensing combined with CMASS and $E_G^{\rm GR} (z_{\rm eff} = 0.316) = 0.452\pm0.005$ combined with LOWZ. We also find $E_G$ to be scale independent, with PTE $>5\%$, as predicted by general relativity. The methods developed in this work are also applicable to improved future analyses with upcoming spectroscopic galaxy samples and CMB lensing measurements. |
| title | The Atacama Cosmology Telescope: DR6 Gravitational Lensing and SDSS BOSS cross-correlation measurement and constraints on gravity with the $E_G$ statistic |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2405.12795 |