Hubble Parameter and Baryon Acoustic Oscillation Measurement Constraints on the Hubble Constant, the Deviation from the Spatially Flat ΛCDM Model, the Deceleration–Acceleration Transition Redshift, and Spatial Curvature

We compile a complete collection of reliable Hubble parameter H(z) data to redshift z ≤ 2.36 and use them with the Gaussian Process method to determine continuous H(z) functions for various data subsets. From these continuous H(z)'s, summarizing across the data subsets considered, we find H 0 ∼ 67 ± 4 km s−1 Mpc−1, more consistent with the recent lower values determined using a variety of techniques. In most data subsets, we see a cosmological deceleration–acceleration transition at 2σ significance, with the data subsets transition redshifts varying over at 1σ significance. We find that the flat-ΛCDM model is consistent with the H(z) data to a z of 1.5 to 2.0, depending on data subset considered, with 2σ deviations from flat-ΛCDM above this redshift range. Using the continuous H(z) with baryon acoustic oscillation distance-redshift observations, we constrain the current spatial curvature density parameter to be , consistent with a flat universe, but the large error bar does not rule out small values of spatial curvature that are now under debate.

Note:

17 pages, 5 figures, version published in ApJ

cosmological parameters
cosmology: observations
large-scale structure of universe

References(104)

Figures(7)

Dark Energy Survey Year 1 Results: A Precise H0 Estimate from DES Y1, BAO, and D/H Data

DES

Collaboration

•

T.M.C. Abbott
(
- Cerro-Tololo InterAmerican Obs.
)

et al.

- Mon.Not.Roy.Astron.Soc. 480 (2018) 3, 3879-3888
•
e-Print:
- 1711.00403
•
DOI:
- 10.1093/mnras/sty1939

The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample

BOSS

Collaboration

•

Shadab Alam
(
- Carnegie Mellon U.
)

et al.

- Mon.Not.Roy.Astron.Soc. 470 (2017) 3, 2617-2652
•
e-Print:
- 1607.03155
•
DOI:
- 10.1093/mnras/stx721

Constraining the dark energy models with $H(z)$ data: An approach independent of $H_0$

- Phys.Rev.D 97 (2018) 6, 063503
•
e-Print:
- 1709.02356
•
DOI:
- 10.1103/PhysRevD.97.063503

The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: first measurement of baryon acoustic oscillations between redshift 0.8 and 2.2

eBOSS

Collaboration

•

Metin Ata
(
- Potsdam, Astrophys. Inst.
)

et al.

- Mon.Not.Roy.Astron.Soc. 473 (2018) 4, 4773-4794
•
e-Print:
- 1705.06373
•
DOI:
- 10.1093/mnras/stx2630

Cosmological implications of baryon acoustic oscillation measurements

BOSS

Collaboration

•

Éric Aubourg
(
- APC, Paris
)

et al.

- Phys.Rev.D 92 (2015) 12, 123516
•
e-Print:
- 1411.1074
•
DOI:
- 10.1103/PhysRevD.92.123516

Measurement of baryon acoustic oscillation correlations at $z=2.3$ with SDSS DR12 Ly $\alpha$ -Forests

BOSS

Collaboration

•

Julian E. Bautista
(
- Utah U.
)

et al.

- Astron.Astrophys. 603 (2017) A12
•
e-Print:
- 1702.00176
•
DOI:
- 10.1051/0004-6361/201730533

Model-Independent Reconstruction of the Expansion History of the Universe from Type Ia Supernovae

et al.

- Mon.Not.Roy.Astron.Soc. 419 (2012) 513
•
e-Print:
- 1109.0873
•
DOI:
- 10.1111/j.1365-2966.2011.19716.x

Improved cosmological constraints from a joint analysis of the SDSS-II and SNLS supernova samples

SDSS

Collaboration

•

M. Betoule
(
- Paris U., VI-VII
)

et al.

- Astron.Astrophys. 568 (2014) A22
•
e-Print:
- 1401.4064
•
DOI:
- 10.1051/0004-6361/201423413

The 6dF Galaxy Survey: Baryon Acoustic Oscillations and the Local Hubble Constant

et al.

- Mon.Not.Roy.Astron.Soc. 416 (2011) 3017-3032
•
e-Print:
- 1106.3366
•
DOI:
- 10.1111/j.1365-2966.2011.19250.x

The BOSS–WiggleZ overlap region – I. Baryon acoustic oscillations

et al.

- Mon.Not.Roy.Astron.Soc. 455 (2016) 3, 3230-3248
•
e-Print:
- 1506.03900
•
DOI:
- 10.1093/mnras/stv1943

We do not live in the R_h = c t universe

- Mon.Not.Roy.Astron.Soc. 425 (2012) 1664-1668,
- Monthly Notices of the Royal Astronomical Society 425 (2012) 1664-1668
•
e-Print:
- 1206.5130
•
DOI:
- 10.1111/j.1365-2966.2012.21575.x