On the Hubble Constant Tension in the SNe Ia Pantheon Sample
By Maria Giovanna Dainotti, Biagio De De Simone, Tiziano Schiavone, Giovanni Montani, Enrico Rinaldi, G. Lambiase. Astrophysical Journal, 2021
305 citations recorded by the source corpus.
The Hubble constant (H 0) tension between Type Ia supernovae (SNe Ia) and Planck measurements ranges from 4 to 6σ. To investigate this tension, we estimate H 0 in the ΛCDM and w0wa CDM (cold dark matter) models by dividing the Pantheon sample, the largest compilation of SNe Ia, into 3, 4, 20, and 40 bins. We fit the extracted H 0 values with a function mimicking the redshift evolution: g(z)=H0(z)=H˜0/(1+z)α , where α indicates an evolutionary parameter and H˜0=H0 at z = 0. We set the absolute magnitude of SNe Ia so that H0=73.5kms−1Mpc−1 , and we fix fiducial values for Ω0mΛCDM=0.298 and Ω0mw0waCDM=0.308 . We find that H 0 evolves with redshift, showing a slowly decreasing trend, with α coefficients consistent with zero only from 1.2 to 2.0σ. Although the α coefficients are compatible with zero in 3σ, this however may affect cosmological results. We measure locally a variation of H0(z=0)−H0(z=1)=0.4kms−1Mpc−1 in three and four bins. Extrapolating H0(z) to z = 1100, the redshift of the last scattering surface, we obtain values of H 0 compatible in 1σ with Planck measurements independent of the cosmological models and number of bins we investigated. Thus, we have reduced the H 0 tension in the range from 54% to 72% for both cosmological models. If the decreasing trend of H0(z) is real, it could be due to astrophysical selection effects or to modified gravity.
Subfields: Astronomy and Astrophysics, Instrumentation
View Paper: https://www.semanticscholar.org/paper/89b634287c0d850ca2346894be05c31bf410b821
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In Astronomy and Astrophysics
- Fa-yin Wang
- Jian-Ping Hu
- Tanvi Karwal
- Tristan L. Smith
- V. Poulin
- Maria Giovanna Dainotti
- Biagio De De Simone
- Tiziano Schiavone
In Instrumentation
- Tanvi Karwal
- Tristan L. Smith
- Maria Giovanna Dainotti
- Biagio De De Simone
- Tiziano Schiavone
- Sahil Ugale
- G. Lambiase
- Fa-yin Wang
Citations in the corpus
- On the Evolution of the Hubble Constant with the SNe Ia Pantheon Sample and Baryon Acoustic Oscillations: A Feasibility Study for GRB-Cosmology in 2030 (2022, methodology): “After building the C total matrix from Equation (16) in [1], we slice the PS in redshift bins, and then we divide C into submatrices considering the order in redshift.”
- Hubble Tension: The Evidence of New Physics (2023, methodology): “1) Open and hotter universe [407,408]; (5) Super-ΛCDM [409]; (6) Heisenberg uncertainty [410] (7) Diffusion [411]; (8) Casimir cosmology [412]; (9) Surface forces [413]; (10) Milne model [414,415]; (11) Running Hubble tension [416,417]; (12) Rapid transition in the effective gravitational constant [”
- The Ups and Downs of Early Dark Energy solutions to the Hubble tension: A review of models, hints and constraints circa 2023 (2023, background): “[57] Maria Giovanna Dainotti, Biagio De Simone, Tiziano Schiavone, Giovanni Montani, Enrico Rinaldi, and Gaetano Lambiase, “On the Hubble constant tension in the SNe Ia Pantheon sample,” Astrophys.”