Cosmological Constraints on the Phenomenological Interacting Dark Energy Model with Fermi Gamma-Ray Bursts and DESI DR2

2025/11/20 by Zhu, Ziyan, Jiang, Qingquan, Liu, Yu +2 · 2 citations
#Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2511.16032

Abstract

In this work, we constrain the phenomenological interacting dark energy (IDE) model using Fermi gamma-ray burst (GRB) dataset and the latest baryon acoustic oscillation (BAO) data from the Dark Energy Spectroscopic Instrument (DESI) Data Release 2 (DR2). Through a joint Bayesian analysis, we perform a cosmological comparative assessment of the ΛCDM, wCDM, and CPL models with the phenomenological IDE model. For the phenomenological IDE model in a flat universe with Fermi samples and DESI DR2, we obtain: ξ=2.63^+0.63_-0.52, ξ+ 3w_X = -0.98^+1.90_-2.07 with the GOLD sample (1.4≤ z ≤5.6) and ξ=2.83^+0.63_-0.58, ξ+ 3w_X = 0.03^+1.35_-1.33 with the FULL sample (1.4≤ z ≤8.2), respectively. Our analysis shows that the ΛCDM model without interaction (ξ=3, ξ+ 3w_X = 0) is consistent with the latest Fermi sample and DESI DR2 at 1σ confidence level. We find no significant deviations from the standard model using AIC and BIC criterias.

Citations

• Exploring the cosmic microwave background dipole direction using gamma-ray bursts
• Investigating Interacting Dark Energy Models Using Fast Radio Burst Observations
• Dynamical Dark Energy in the Crosshairs: A Joint Analysis with DESI, Pantheon plus, and TDCOSMO Constraints
• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Testing the consistency of new Amati-correlated gamma-ray burst dataset cosmological constraints with those from better-established cosmological data
• Characterizing the equivalence between dark energy and radiation using gamma-ray bursts
• Determining H₀ from distance sum rule combining gamma-ray bursts with observational Hubble data and strong gravitational lensing
• Revisiting holographic dark energy after DESI 2024
• emcee : The MCMC Hammer
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant

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• Testing the Distance Duality Relation with Cosmological Observations at high Redshift using Artificial Neural Network
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