Testing Cosmic Acceleration from the Late-Time Universe
Abstract
:1. Introduction
2. Theoretical Background
2.1. Standard Cosmological Model
2.2. Flat Constant wCDM Model
2.3. CPL Parametrization
3. Data and Methodology
Observable | Measurement | Error | Year | Dataset Survey | Reference | |
---|---|---|---|---|---|---|
0.106 | 0.336 | 0.015 | 2011 | 6dFGS BAO | [50] | |
0.15 | 4.47 | 0.17 | 2021 | SDSS Main Galaxy Sample | [53] | |
0.31 | 6.29 | 0.14 | 2017 | SDSS-III BOSS-DR12 | [54] | |
0.36 | 7.09 | 0.16 | 2017 | SDSS-III BOSS-DR12 | [54] | |
0.38 | 25.00 | 0.76 | 2021 | SDSS BOSS Galaxy Sample | [54] | |
0.40 | 7.70 | 0.16 | 2017 | SDSS-III BOSS-DR12 | [54] | |
0.44 | 8.20 | 0.13 | 2017 | SDSS-III BOSS-DR12 | [54] | |
0.48 | 8.64 | 0.11 | 2017 | SDSS-III BOSS-DR12 | [54] | |
0.51 | 13.36 | 0.21 | 2021 | SDSS BOSS Galaxy Sample | [53] | |
0.52 | 8.90 | 0.12 | 2017 | SDSS-III BOSS-DR12 | [54] | |
0.56 | 9.16 | 0.14 | 2017 | SDSS-III BOSS-DR12 | [54] | |
0.59 | 9.45 | 0.17 | 2017 | SDSS-III BOSS-DR12 | [54] | |
0.64 | 9.62 | 0.22 | 2017 | SDSS-III BOSS-DR12 | [54] | |
0.697 | 1529 | 73 | 2020 | DECaLS DR8 Footprint LRG | [49] | |
0.698 | 19.77 | 0.47 | 2020 | eBOSS DR16 LRG Sample | [44] | |
0.698 | 17.65 | 0.30 | 2020 | eBOSS DR16 LRG Sample | [44] | |
0.70 | 17.96 | 0.51 | 2021 | eBOSS DR16 ELG Sample | [55] | |
0.835 | 18.92 | 0.51 | 2022 | Dark Energy Survey Year 3 | [48] | |
0.845 | 20.91 | 2.86 | 2021 | eBOSS DR16 ELG Sample | [55] | |
0.874 | 1680 | 109 | 2020 | DECaLS DR8 Footprint LRG | [49] | |
1.48 | 13.23 | 0.47 | 2021 | eBOSS DR16 Quasar Sample | [46] | |
1.48 | 30.21 | 0.79 | 2021 | eBOSS DR16 Quasar Sample | [46] | |
2.33 | 8.99 | 0.19 | 2020 | eBOSS DR16 Ly-Quasar | [47] | |
2.33 | 37.5 | 1.1 | 2020 | eBOSS DR16 Ly-Quasar | [47] |
4. Analysis and Results
4.1. Standard Cosmological Model
4.2. Models beyond Standard Model
4.2.1. wCDM Model
4.2.2. CDM Model
5. Discussion
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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z | Method | Reference | ||
---|---|---|---|---|
0.07 | 69 | 19.6 | Full-spectrum fitting | [57] |
0.09 | 69 | 12 | Full-spectrum fitting | [58] |
0.12 | 68.6 | 26.2 | Full-spectrum fitting | [57] |
0.17 | 83 | 8 | Full-spectrum fitting | [58] |
0.179 | 75 | 4 | Calibrated D4000 | [59] |
0.199 | 75 | 5 | Calibrated D4000 | [59] |
0.20 | 72.9 | 29.6 | Full-spectrum fitting | [57] |
0.27 | 77 | 14 | Full-spectrum fitting | [58] |
0.28 | 88.8 | 36.6 | Full-spectrum fitting | [57] |
0.352 | 83 | 14 | Calibrated D4000 | [59] |
0.38 | 83 | 13.5 | Calibrated D4000 | [60] |
0.4 | 95 | 17 | Full-spectrum fitting | [58] |
0.4004 | 77 | 10.2 | Calibrated D4000 | [60] |
0.425 | 87.1 | 11.2 | Calibrated D4000 | [60] |
0.445 | 92.8 | 12.9 | Calibrated D4000 | [60] |
0.47 | 89.0 | 49.6 | Full-spectrum fitting | [61] |
0.4783 | 80.9 | 9 | Calibrated D4000 | [60] |
0.48 | 97 | 62 | Full-spectrum fitting | [62] |
0.593 | 104 | 13 | Calibrated D4000 | [59] |
0.68 | 92 | 8 | Calibrated D4000 | [59] |
0.75 | 98.8 | 33.6 | Lick indices | [63] |
0.781 | 105 | 12 | Calibrated D4000 | [59] |
0.80 | 113.1 | 28.5 | Full-spectrum fitting | [64] |
0.875 | 125 | 17 | Calibrated D4000 | [59] |
0.88 | 90 | 40 | Full-spectrum fitting | [62] |
0.9 | 117 | 23 | Full-spectrum fitting | [58] |
1.037 | 154 | 20 | Calibrated D4000 | [59] |
1.3 | 168 | 17 | Full-spectrum fitting | [58] |
1.363 | 160 | 33.6 | Calibrated D4000 | [65] |
1.43 | 177 | 18 | Full-spectrum fitting | [58] |
1.53 | 140 | 14 | Full-spectrum fitting | [58] |
1.75 | 202 | 40 | Full-spectrum fitting | [58] |
1.965 | 186.5 | 50.4 | Calibrated D4000 | [65] |
n Correlated Pairs | BAO | BAO + R22 |
---|---|---|
n = 0 | = 0.269 ± 0.015 | = 0.269 ± 0.017 |
= 0.725 ± 0.011 | = 0.725 ± 0.013 | |
n = 6 | = 0.263 ± 0.015 | = 0.264 ± 0.015 |
= 0.731 ± 0.015 | = 0.730 ± 0.014 | |
n = 12 | = 0.262 ± 0.017 | = 0.263 ± 0.015 |
= 0.732 ± 0.012 | = 0.732 ± 0.011 |
Parameter | BAO | BAO + R22 | BAO + Pantheon + CC | BAO + Pantheon + CC + R22 |
---|---|---|---|---|
(km s Mpc) | 68.01 ± 4.53 | 72.82 ± 1.01 | 69.76 ± 1.71 | 71.68 ± 1.65 |
0.270 ± 0.039 | 0.268 ± 0.037 | 0.275 ± 0.025 | 0.271 ± 0.026 | |
0.725 ± 0.022 | 0.726 ± 0.023 | 0.720 ± 0.014 | 0.724 ± 0.015 | |
(Mpc) | 150.45 ± 9.89 | 140.14 ± 3.16 | 145.88 ± 3.32 | 142.10 ± 2.49 |
0.999 ± 0.074 | 0.938 ± 0.023 | 0.971 ± 0.028 | 0.949 ± 0.024 |
Parameter | BAO | BAO + R22 | BAO + Pantheon + CC | BAO + Pantheon + CC + R22 |
---|---|---|---|---|
(km s Mpc) | 65.83 ± 4.73 | 72.56 ± 2.10 | 69.83 ± 1.06 | 71.60 ± 1.02 |
0.193 ± 0.077 | 0.201 ± 0.068 | 0.273 ± 0.015 | 0.273 ± 0.016 | |
0.786 ± 0.050 | 0.780 ± 0.046 | 0.721 ± 0.013 | 0.721 ± 0.013 | |
w | −0.753 ± 0.168 | −0.786 ± 0.210 | −1.001 ± 0.040 | −1.014 ± 0.053 |
(Mpc) | 150.67 ± 10.32 | 136.90 ± 2.48 | 145.73 ± 3.45 | 142.44 ± 2.24 |
0.996 ± 0.069 | 0.924 ± 0.018 | 0.970 ± 0.029 | 0.949 ± 0.025 |
Parameters | BAO | BAO+R22 | BAO+Pantheon+CC | BAO + Pantheon + CC + R22 |
---|---|---|---|---|
(km s Mpc) | 65.82 ± 4.43 | 72.83 ± 1.41 | 69.90 ± 1.06 | 71.71 ± 1.06 |
0.159 ± 0.098 | 0.165 ± 0.073 | 0.183 ± 0.056 | 0.178 ± 0.050 | |
0.826 ± 0.080 | 0.820 ± 0.065 | 0.810 ± 0.050 | 0.814 ± 0.050 | |
−1.214 ± 0.130 | −1.149 ± 0.121 | −1.027 ± 0.069 | −1.020 ± 0.072 | |
−0.344 ± 0.432 | −0.478 ± 0.390 | −0.848 ± 0.180 | −0.878 ± 0.161 | |
(Mpc) | 152.01 ± 10.18 | 138.26 ± 2.82 | 146.18 ± 2.35 | 142.73 ± 2.36 |
1.002 ± 0.066 | 0.930 ± 0.022 | 0.974 ± 0.033 | 0.950 ± 0.035 |
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Lozano Torres, J.A. Testing Cosmic Acceleration from the Late-Time Universe. Astronomy 2023, 2, 300-314. https://doi.org/10.3390/astronomy2040020
Lozano Torres JA. Testing Cosmic Acceleration from the Late-Time Universe. Astronomy. 2023; 2(4):300-314. https://doi.org/10.3390/astronomy2040020
Chicago/Turabian StyleLozano Torres, Jose Agustin. 2023. "Testing Cosmic Acceleration from the Late-Time Universe" Astronomy 2, no. 4: 300-314. https://doi.org/10.3390/astronomy2040020
APA StyleLozano Torres, J. A. (2023). Testing Cosmic Acceleration from the Late-Time Universe. Astronomy, 2(4), 300-314. https://doi.org/10.3390/astronomy2040020