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First Cosmological Results using Type Ia Supernovae from the Dark Energy Survey: Measurement of the Hubble Constant

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arxiv 1811.02376 v2 pith:CX7IABYJ submitted 2018-11-06 astro-ph.CO

E. Macaulay , R. C. Nichol , D. Bacon , D. Brout , T. M. Davis , B. Zhang , B. A. Bassett , D. Scolnic
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A. Möller C. B. D'Andrea S. R. Hinton R. Kessler A. G. Kim J. Lasker C. Lidman M. Sako M. Smith M. Sullivan T. M. C. Abbott S. Allam J. Annis J. Asorey S. Avila K. Bechtol D. Brooks P. Brown D. L. Burke J. Calcino A. Carnero Rosell D. Carollo M. Carrasco Kind J. Carretero F. J. Castander T. Collett M. Crocce C. E. Cunha L. N. da Costa C. Davis J. De Vicente H. T. Diehl P. Doel A. Drlica-Wagner T. F. Eifler J. Estrada A. E. Evrard A. V. Filippenko D. A. Finley B. Flaugher R. J. Foley P. Fosalba J. Frieman L. Galbany J. García-Bellido E. Gaztanaga K. Glazebrook S. González-Gaitán D. Gruen R. A. Gruendl J. Gschwend G. Gutierrez W. G. Hartley D. L. Hollowood K. Honscheid J. K. Hoormann B. Hoyle D. Huterer B. Jain D. J. James T. Jeltema E. Kasai E. Krause K. Kuehn N. Kuropatkin O. Lahav G. F. Lewis T. S. Li M. Lima H. Lin M. A. G. Maia J. L. Marshall P. Martini R. Miquel P. Nugent A. Palmese Y.-C. Pan A. A. Plazas A. K. Romer A. Roodman E. Sanchez V. Scarpine R. Schindler M. Schubnell S. Serrano I. Sevilla-Noarbe R. Sharp M. Soares-Santos F. Sobreira N. E. Sommer E. Suchyta E. Swann M. E. C. Swanson G. Tarle D. Thomas R. C. Thomas B. E. Tucker S. A. Uddin V. Vikram A. R. Walker P. Wiseman
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keywords distancemeasurementsladdermeasurementuncertaintiesbaosconstantcosmological
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We present an improved measurement of the Hubble constant (H_0) using the 'inverse distance ladder' method, which adds the information from 207 Type Ia supernovae (SNe Ia) from the Dark Energy Survey (DES) at redshift 0.018 < z < 0.85 to existing distance measurements of 122 low redshift (z < 0.07) SNe Ia (Low-z) and measurements of Baryon Acoustic Oscillations (BAOs). Whereas traditional measurements of H_0 with SNe Ia use a distance ladder of parallax and Cepheid variable stars, the inverse distance ladder relies on absolute distance measurements from the BAOs to calibrate the intrinsic magnitude of the SNe Ia. We find H_0 = 67.8 +/- 1.3 km s-1 Mpc-1 (statistical and systematic uncertainties, 68% confidence). Our measurement makes minimal assumptions about the underlying cosmological model, and our analysis was blinded to reduce confirmation bias. We examine possible systematic uncertainties and all are below the statistical uncertainties. Our H_0 value is consistent with estimates derived from the Cosmic Microwave Background assuming a LCDM universe (Planck Collaboration et al. 2018).

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Cited by 9 Pith papers

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    A simulation-based inference pipeline (Stjörnumál) fits SN Ia dust and intrinsic scatter models to DES 5-year data, enabling fast Bayesian model comparison across seven SN Ia population models.

  2. Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing

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    DES Y3 3x2pt analysis constrains S8=0.776±0.017 and Ωm=0.339±0.032 in flat ΛCDM, consistent with Planck CMB results at p=0.13-0.48.

  3. Cosmological Inference using Gravitational Wave Standard Sirens: A Mock Data Challenge

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    A mock data challenge shows that gravitational wave standard sirens can recover an unbiased Hubble constant with galaxy catalogs as incomplete as 25%, using the gwcosmo Bayesian pipeline.

  4. A model-independent determination of the Hubble constant from lensed quasars and supernovae using Gaussian process regression

    astro-ph.CO 2019-08 conditional novelty 6.0 of 10

    A Gaussian process reconstruction of supernova distances, anchored by four H0LiCOW lens time delays, gives H0 = 72.2 ± 2.1 km/s/Mpc in a flat universe without assuming a dark energy model.

  5. Controlled Tension Forecasting: Quantifying Cross-Probe Biases in $\omega_0\omega_a$CDM

    astro-ph.CO 2025-12 conditional novelty 5.0 of 10

    Controlled mock analyses show that cross-probe calibration tensions — in matter density, H0, supernova brightness, or sound horizon — can fake 3–10σ apparent dynamical-dark-energy signals while the true cosmology is ΛCDM.

  6. Dark Neutrino interactions phase out the Hubble tension

    hep-ph 2019-08 conditional novelty 5.0 of 10

    Dark matter-neutrino interactions that block neutrino free streaming shift CMB acoustic peaks and reduce the Hubble tension from about 3.8σ to about 2.1σ in a fit to Planck and WiggleZ data.

  7. Late Time Dynamical Dark Energy and the CMB-Distance Ladder Tension

    astro-ph.CO 2026-07 conditional novelty 4.0 of 10

    The SNIa absolute-magnitude tension between the distance ladder (−19.204) and CMB+ΛCDM (−19.430) is independent of late-time expansion history, and DESI's w0–wa dark-energy hints shift H0 by only ~0.3–0.4 km/s/Mpc.

  8. The Hubble-Lema\^{i}tre constant and sound horizon from low-redshift probes

    astro-ph.CO 2019-08 conditional novelty 4.0 of 10

    Freeing the sound horizon and calibrating distances with three gravitational lenses yields H0 = 72 ± 7 km/s/Mpc and H0 r_s = 9895 ± 161 km/s, and r_s = 137 ± 4.5 Mpc when combined with H0LiCOW.

  9. Lyra's cosmology of homogeneous and isotropic universe in Brans-Dicke theory

    gr-qc 2019-09 reject novelty 3.0 of 10

    A Brans-Dicke-Lyra model is fitted to H(z) and supernova data, but the acceleration claim conflicts with the model's own field equations and the fit reduces to ΛCDM.

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