Gammaray bursts, quasars, baryonic acoustic oscillations, and supernovae Ia: new statistical insights and cosmological constraints
Abstract
The recent $\sim 4 \, \sigma$ Hubble constant, H_{0}, tension is observed between the value of H_{0} from the cosmic microwave background (CMB) and Type Ia supernovae (SNe Ia). It is a decade since this tension is excruciating the modern astrophysical community. To shed light on this problem is key to consider probes at intermediate redshifts between SNe Ia and CMB and reduce the uncertainty on H_{0}. Toward these goals, we fill the redshift gap by employing gammaray bursts (GRBs) and quasars (QSOs), reaching z = 9.4 and z = 7.6, respectively, combined with baryonic acoustic oscillations (BAO), and SNe Ia. To this end, we employ the 'Dainotti GRB 3D relation' among the restframe end time of the Xray plateau emission, its corresponding luminosity, and the peak prompt luminosity, and the 'RisalitiLusso' QSO relation between ultraviolet and Xray luminosities. We inquire the commonly adopted Gaussianity assumption on GRBs, QSOs, and BAO. With the joint sample, we fit the flat Λ Cold Dark Matter model with both the Gaussian and the newly discovered likelihoods. We also investigate the impact of the calibration assumed for Pantheon and Pantheon + SNe Ia on this analysis. Remarkably, we show that only GRBs fulfil the Gaussianity assumption. We achieve small uncertainties on the matterdensity parameter Ω_{M} and H_{0}. We find H_{0} values compatible within 2σ with the one from the Tip of the Red Giant Branch. Finally, we show that the cosmological results are heavily biased against the arbitrary calibration choice for SNe Ia.
 Publication:

Monthly Notices of the Royal Astronomical Society
 Pub Date:
 May 2023
 DOI:
 10.1093/mnras/stad763
 arXiv:
 arXiv:2303.07076
 Bibcode:
 2023MNRAS.521.3909B
 Keywords:

 methods: statistical;
 cosmological parameters;
 cosmology: observations;
 cosmology: theory;
 Astrophysics  Cosmology and Nongalactic Astrophysics;
 High Energy Physics  Theory
 EPrint:
 17 pages, 6 figures, 1 table, accepted in MNRAS