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astro-ph.CO2026
Graph-based Summary Statistics for Revealing the Stochastic Gravitational Wave Background in Pulsar Timing Arrays
M. Alakhras, S. M. S. Movahed
In this work, we propose a graph-based method implemented on the pulsar timing residuals (PTRs) for stochastic gravitational wave background (SGWB) detection within the nano-Hertz…
astro-ph.CO2026
Constraining nonminimal f(T) gravity from Primordial Nucleosynthesis to Late-Universe observations
Yahia Al-Omar, Majida Nahili, Nidal Chamoun
We present a multi-epoch test of f(T) gravity with nonminimal torsion-matter coupling, combining early- and late-Universe observations. At the MeV scale, Big-Bang Nucleosynthesis c…
astro-ph.CO2026
Cosmological Constraints on f(T,B) Gravity from Observations of Early and Late Universe
Yahia Al-Omar, Majida Nahili, Nidal Chamoun
We present a unified framework that combines early- and late-Universe observations to constrain three functional realizations of f(T,B) gravity: the linear, quadratic, and general…