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Testing low-redshift cosmic acceleration with large-scale structure

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Testing low-redshift cosmic acceleration with large-scale structure. / Nadathur, Seshadri; Percival, Will J.; Beutler, Florian; Winther, Hans.

In: Physical Review Letters, Vol. 124, No. 22, 221301, 05.06.2020.

Research output: Contribution to journalArticlepeer-review

Harvard

Nadathur, S, Percival, WJ, Beutler, F & Winther, H 2020, 'Testing low-redshift cosmic acceleration with large-scale structure', Physical Review Letters, vol. 124, no. 22, 221301. https://doi.org/10.1103/PhysRevLett.124.221301

APA

Nadathur, S., Percival, W. J., Beutler, F., & Winther, H. (2020). Testing low-redshift cosmic acceleration with large-scale structure. Physical Review Letters, 124(22), [221301]. https://doi.org/10.1103/PhysRevLett.124.221301

Vancouver

Nadathur S, Percival WJ, Beutler F, Winther H. Testing low-redshift cosmic acceleration with large-scale structure. Physical Review Letters. 2020 Jun 5;124(22). 221301. https://doi.org/10.1103/PhysRevLett.124.221301

Author

Nadathur, Seshadri ; Percival, Will J. ; Beutler, Florian ; Winther, Hans. / Testing low-redshift cosmic acceleration with large-scale structure. In: Physical Review Letters. 2020 ; Vol. 124, No. 22.

Bibtex

@article{0963ee529dd4473693bb867ae0c709d3,
title = "Testing low-redshift cosmic acceleration with large-scale structure",
abstract = "We examine the cosmological implications of measurements of the void-galaxy cross-correlation at redshift z = 0.57 combined with baryon acoustic oscillation (BAO) data at 0.1 < z < 2.4. We find direct evidence of the late-time acceleration due to dark energy at > 10σ significance from these data alone, independent of the cosmic microwave background and supernovae. Using a nucleosynthesis prior on Ωbh 2, we measure the Hubble constant to be H0 = 72.3±1.9 km s−1Mpc−1 from BAO+voids at z < 2, and H0 = 69.0 ± 1.2 km s−1Mpc−1 when adding Lyman-α BAO at z = 2.34, both independent of the CMB. Adding voids to CMB, BAO and supernova data greatly improves measurement of the dark energy equation of state, increasing the figure of merit by > 40%, but remaining consistent with flat Λ cold dark matter.",
keywords = "astro-ph.CO, RCUK, STFC, ST/N00180X/1",
author = "Seshadri Nadathur and Percival, {Will J.} and Florian Beutler and Hans Winther",
note = "7 pages, 5 figures. Accepted for publication in PRL. v2: minor edits to text in response to review.",
year = "2020",
month = jun,
day = "5",
doi = "10.1103/PhysRevLett.124.221301",
language = "English",
volume = "124",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "22",

}

RIS

TY - JOUR

T1 - Testing low-redshift cosmic acceleration with large-scale structure

AU - Nadathur, Seshadri

AU - Percival, Will J.

AU - Beutler, Florian

AU - Winther, Hans

N1 - 7 pages, 5 figures. Accepted for publication in PRL. v2: minor edits to text in response to review.

PY - 2020/6/5

Y1 - 2020/6/5

N2 - We examine the cosmological implications of measurements of the void-galaxy cross-correlation at redshift z = 0.57 combined with baryon acoustic oscillation (BAO) data at 0.1 < z < 2.4. We find direct evidence of the late-time acceleration due to dark energy at > 10σ significance from these data alone, independent of the cosmic microwave background and supernovae. Using a nucleosynthesis prior on Ωbh 2, we measure the Hubble constant to be H0 = 72.3±1.9 km s−1Mpc−1 from BAO+voids at z < 2, and H0 = 69.0 ± 1.2 km s−1Mpc−1 when adding Lyman-α BAO at z = 2.34, both independent of the CMB. Adding voids to CMB, BAO and supernova data greatly improves measurement of the dark energy equation of state, increasing the figure of merit by > 40%, but remaining consistent with flat Λ cold dark matter.

AB - We examine the cosmological implications of measurements of the void-galaxy cross-correlation at redshift z = 0.57 combined with baryon acoustic oscillation (BAO) data at 0.1 < z < 2.4. We find direct evidence of the late-time acceleration due to dark energy at > 10σ significance from these data alone, independent of the cosmic microwave background and supernovae. Using a nucleosynthesis prior on Ωbh 2, we measure the Hubble constant to be H0 = 72.3±1.9 km s−1Mpc−1 from BAO+voids at z < 2, and H0 = 69.0 ± 1.2 km s−1Mpc−1 when adding Lyman-α BAO at z = 2.34, both independent of the CMB. Adding voids to CMB, BAO and supernova data greatly improves measurement of the dark energy equation of state, increasing the figure of merit by > 40%, but remaining consistent with flat Λ cold dark matter.

KW - astro-ph.CO

KW - RCUK

KW - STFC

KW - ST/N00180X/1

U2 - 10.1103/PhysRevLett.124.221301

DO - 10.1103/PhysRevLett.124.221301

M3 - Article

VL - 124

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 22

M1 - 221301

ER -

ID: 21001016