output
20052026
most citedObservations of the Crab Nebula with H.E.S.S

863 citations

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67 papers · 1 filter

gr-qc2026

Viaggiu holographic dark energy in light of DESI DR2

Amlan K. Halder, Andronikos Paliathanasis, Stefano Viaggiu +2

We test the cosmological viability of the Viaggiu holographic dark energy (VHDE) model by using late-time observational data. In particular, we place constraints on the free parame…

gr-qc2025

Unified dynamical system formulations for gravity with applications to nonminimal derivative coupling and -Higgs inflation

Saikat Chakraborty, Sergio E. Jorás, Alberto Saa

Two different dynamical system formulations are presented that can be implemented to analyze a rather large class of modified gravity theories within the generic family.…

gr-qc2025

Cosmological perturbations in Energy-Momentum Squared Gravity

Peter K. S. Dunsby, Maria-Alexia Caldis, Eduardo Bittencourt

We present a fully covariant and gauge-invariant analysis of linear cosmological perturbations in Energy-Momentum Squared Gravity. Working within the 1+3 formalism, we derive the e…

gr-qc20251 cited

Observational constraints on the modified cosmology inspired by string T-duality

G. G. Luciano, A. Paliathanasis, A. Sheykhi

We explore the cosmological consequences of a modified cosmology inspired by string T-duality. We incorporate the zero-point length correction, , into the gravitational potent…

gr-qc202517 cited

III. Interacting Dark Energy: Summary of Models, Pathologies, and Constraints

Marcel van der Westhuizen, Amare Abebe, Eleonora Di Valentino

We present an overview of the main results from our two companion papers that are relevant for observational constraints on interacting dark energy (IDE) models. We provide analyti…

gr-qc2025

Compact Stars in Symmetric Teleparallel Scalar-Tensor Gravity

Grigorios Panotopoulos, Andrés Lueiza-Colipí, Nikolaos Dimakis +1

We investigate the existence of static, spherically symmetric compact objects within the framework of symmetric teleparallel scalar-tensor gravity. This theory extends the Brans-Di…