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20232026
most citedObservational Constraints and Cosmological Implications of Scalar-Tensor Gravity

43 citations

17 papers

gr-qc2026

Comparative Study of Gravity Models with Observational Constraints from \textit{OHD} and \textit{Pantheon+ datasets}

Anirudh Pradhan, S. A. Salve, V. B. Raut +1

The late-time acceleration of the universe remains one of the most significant open problems in modern cosmology. Modified gravity frameworks such as gravity provide a geome…

gr-qc2025★ 2 cited

Observational tests of the conformal osculating Barthel-Kropina cosmological model

Himanshu Chaudhary, Rattanasak Hama, Tiberiu Harko +2

We consider detailed cosmological tests of dark energy models obtained from the general conformal transformation of the Kropina metric, representing an -type Finslerian geom…

astro-ph.CO2025★ 5 cited

Evidence of dynamical dark energy found via the DESI DR2 Lyman forest

Salvatore Capozziello, Himanshu Chaudhary, G. Mustafa +1

We present a comprehensive analysis of the cosmological implications of the Dark Energy Spectroscopic Instrument (DESI) Data Release 2 (DR2) Lyman- forest baryon acoustic oscill…

gr-qc2025

Generalized Second Law and Thermodynamical Aspects of Gravity

Anirudh Pradhan, A. Husain, M. Zeyauddin +1

Late-time cosmic acceleration has motivated the exploration of various extensions of general relativity, among which gravity, based on the non-metricity scalar $…

gr-qc2025

Is the CDM Model in Crisis?

Himanshu Chaudhary, Salvatore Capozziello, Subhrat Praharaj +2

We present strong evidence for dynamical dark energy that challenges the standard CDM model. Several dark energy scenarios are explored, including CDM, logarithmic, expo…

hep-th2024★ 3 cited

Optical, Dynamic and Topological Characteristics of Deformed Schwarzschild Black Holes

Dhruba Jyoti Gogoi, Jyatsnasree Bora, Filip Studnička +1

We investigate the temperature, photon and shadow radii, quasinormal modes (QNMs), time domain profiles, greybody factors, emission rates and topological characteristics of deforme…

astro-ph.CO2024★ 8 cited

Constraining Cosmological Parameters with Viscous Modified Chaplygin Gas and Generalized Cosmic Chaplygin Gas Models in Horava-Lifshitz Gravity: Utilizing Late-time Datasets

Sayani Maity, Himanshu Chaudhary, Ujjal Debnath +2

This study examines accelerated cosmic expansion using the Viscous Modified Chaplygin Gas (VMMG) and Generalized Cosmic Chaplygin Gas (GCCM) within Horava-Lifshitz gravity. Our aim…

astro-ph.CO2024★ 5 cited

Observational Constraints on the Parameters of Hořava-Lifshitz Gravity

Himanshu Chaudhary, Ujjal Debnath, Shibesh Kumar Jas Pacif +3

This study investigates the accelerated cosmic expansion within the Hořava-Lifshitz Model. To constrain the cosmological parameters of this model, we incorporate 17 Baryon Acoustic…

gr-qc2024★ 3 cited

Gravitational Lensing of Dark Energy Models and CDM Using Observational data in Loop Quantum Cosmology

Rownak Kundu, Ujjal Debnath, Himanshu Chaudhary +1

This paper investigates the accelerated cosmic expansion in the late Universe by examining two dark energy models, viscous modified Chaplygin gas (VsMCG) and variable modified Chap…

gr-qc2023★ 17 cited

Black Hole Solutions with Constant Ricci Scalar in a Model of Finsler Gravity

Z. Nekouee, S. K. Narasimhamurthy, S. K. J. Pacif

Ricci scalar being zero is equivalent to the vacuum field equation in Finsler space-time. The Schwarzschild metric can be concluded from the field equation's solution if the space-…

gr-qc2023★ 43 cited

Observational Constraints and Cosmological Implications of Scalar-Tensor Gravity

Amine Bouali, Himanshu Chaudhary, Tiberiu Harko +3

Recently, the scalar-tensor representation of gravity was used to explore gravitationally induced particle production/annihilation. Using the framework of irreversible th…

gr-qc2023★ 6 cited

Addressing the Tension using Late-Time Observational Measurements in a Novel deceleration Parametrization

Himanshu Chaudhary, Ujjal Debnath, G. Mustafa +2

This paper introduces a novel cosmological model aimed at probing the accelerated expansion of the late Universe through a unique parametrization of the deceleration parameter. We…

gr-qc2023★ 14 cited

Cosmological Tests of Dark Energy Model in FRW Universe

Himanshu Chaudhary, Amine Bouali, Niyaz Uddin Molla +2

This research article presents a new cosmological model formulated within the framework, focusing on the observational signatures and parameter constraints of the model.…

gr-qc2023★ 29 cited

Data Analysis of three parameter models of deceleration parameter in FRW Universe

Amine Bouali, Himanshu Chaudhary, Ujjal Debnath +2

Constraining the dark energy deceleration parameter is one of the fascinating topics in the recent cosmological paradigm. This work aims to reconstruct the dark energy using parame…

gr-qc2023★ 17 cited

Diagnostic and Comparative Analysis of Dark Energy Models with Parametrizations

Dhruv Arora, Himanshu Chaudhary, Shibesh Kumar Jas Pacif +1

This manuscript presents a diagnostic analysis of three dark energy models resulting from the parametrization of the deceleration parameter. These models exhibit intriguing feature…

gr-qc2023★ 24 cited

Model-independent study for a quintessence model of dark energy: Analysis and Observational constraints

Amine Bouali, Himanshu Chaudhary, Amritansh Mehrotra +1

In this paper, a well-motivated parametrization of the Hubble parameter (% ) is revisited that renders two models of dark energy showing some intriguing features of the late-tim…

gr-qc2023★ 42 cited

Constraints on the Parameterized Deceleration Parameter in FLRW Universe

Himanshu Chaudhary, Amine Bouali, Ujjal Debnath +2

Confirmation of accelerated expansion of the universe probed the concept of dark energy theory, and since then, numerous models have been introduced to explain its origin and natur…