2005/04/12 by T. Di Girolamo, Tristano Di Girolamo, Riccardo Catena +3 · 22 citations
Physics and Astronomy · #Astrophysics #Cosmic distance ladder #Cosmological constant #Cosmology #Cosmology and Gravitation Theories #Dark energy #Galaxy #Gamma-ray bursts and supernovae #Lambda-CDM model #Physics #Pulsars and Gravitational Waves Research #Quintessence #Redshift #Theoretical physics #Universe #astro-ph #gr-qc
paper · pdf · doi:10.1088/1475-7516/2005/04/008
published in Journal of Cosmology and Astroparticle Physics 2005(04), 008 (Institute of Physics) · 21 pages, 4 figures
openalex publication_date 2005/04/12 · arxiv created 2005/04/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Using the narrow clustering of the geometrically corrected gamma-ray energies released by gamma-ray bursts, we investigate the possibility of using these sources as standard candles to probe cosmological parameters such as the matter density Ω m and the cosmological constant energy density Ω Λ . By simulating different samples of gamma-ray bursts, we find that Ω m can be determined with accuracy ∼7% with data from 300 sources. We also show that, if Ω = 1 is due to a quintessence field, some of the models proposed in the literature may be discriminated from a Universe with a cosmological constant, by a similar-sized sample of gamma-ray bursts.