Determining H 0from a distance sum rule that combines gamma-ray bursts with observational Hubble data and strong gravitational lensing


Luongo O. Muccino M.
1 September 2025EDP Sciences

Astronomy and Astrophysics
2025#701

Context. Model-independent bounds on the Hubble constant H 0 are important for gaining insight into cosmological tensions. Aims. We work out a model-independent analysis based on the sum rule, which is applied to late- and early-time data catalogs to determine H 0. Methods. Through the model-independent Bézier interpolation of the observational Hubble data and assuming a flat universe, we reconstructed the dimensionless distances of the sum rule and applied them to strong lensing data to derive constraints on H 0. We then extended this method to the high-redshift domain, and in two separate analyses, we included gamma-ray burst (GRB) data sets from the well-established Amati and Combo correlations. Results. In all three analyses, our findings agree at the 1σ level with the H 0 determined from type Ia supernovae (SNe Ia), and at the 2σ level, our findings agree with the measurement derived from the cosmic microwave background (CMB) radiation. Conclusions. Our method evidences that the bounds on H 0 are significantly affected by strong lensing data, which favor the local measurement from SNe Ia. Including GRBs causes only a negligible decrease in the value of H 0. This may indicate that GRBs can be used to trace the expansion history, and in conjunction with CMB measurements, GRBs may reconcile the Hubble tension and accommodate the flat ΛCDM paradigm purported by CMB data.

cosmological parameters , cosmology: miscellaneous , cosmology: observations , cosmology: theory , dark energy , large-scale structure of Universe

Text of the article Перейти на текст статьи

Università di Camerino, Divisione di Fisica, Via Madonna delle Carceri 9, Camerino, 62032, Italy
SUNY Polytechnic Institute, Utica, 13502, NY, United States
INAF, Osservatorio Astronomico di Brera, Milano, Italy
INFN, Sezione di Perugia, Perugia, 06123, Italy
Al-Farabi Kazakh National University, Al-Farabi Av. 71, Almaty, 050040, Kazakhstan
ICRANet, Piazza della Repubblica 10, Pescara, 65122, Italy

Università di Camerino
SUNY Polytechnic Institute
INAF
INFN
Al-Farabi Kazakh National University
ICRANet

10 лет помогаем публиковать статьи Международный издатель

Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026