2k citations · 7.8k across the 94 of their papers we have counts for
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Plasma impact on black hole shadow and gravitational weak lensing for Schwarzschild-like black hole
Weiqiang Yang, Mirzabek Alloqulov, Ahmadjon Abdujabbarov +3
This article delves into the observational properties of a Schwarzschild-like black hole (BH). Initially, the research provides a succinct examination of the spacetime geometry and…
Solving an Interacting Quintessence Model with a Sound Horizon Initial Condition and its Observational Constraints
Wenzhong Liu, Yabo Wu, Supriya Pan +1
Astronomical observations suggest that the current standard -Cold Dark Matter model in modern cosmology has some discrepancies when fitting the data during the whole expansion h…
Modified Emergent Dark Energy and its Astronomical Constraints
H. B. Benaoum, Weiqiang Yang, Supriya Pan +1
We introduce a modified form of the Phenomenologically Emergent Dark Energy (PEDE) model by showing a very elegant approach. The model is named as Modified Emergent Dark Energy (ME…
Do current observations support transient acceleration of our universe?
Yu. L. Bolotin, V. A. Cherkaskiy, M. I. Konchatnyi +2
In the present article we have investigated a very natural question regarding the dynamics of the universe, namely, the possibility of its decelerating phase immediately after the…
Understanding the phenomenology of interacting dark energy scenarios and their theoretical bounds
Supriya Pan, Jaume de Haro, Weiqiang Yang +1
Non-gravitational interaction between dark matter and dark energy has been considered in a spatially flat Friedmann-Lemaître-Robertson-Walker (FLRW) universe. The interaction rate…
Observational constraints of a new unified dark fluid and the tension
Weiqiang Yang, Supriya Pan, Andronikos Paliathanasis +2
Unified cosmological models have received a lot of attention in astrophysics community for explaining both the dark matter and dark energy evolution. The Chaplygin cosmologies, a w…
Dynamics of nonlinear interacting dark energy models
Andronikos Paliathanasis, Supriya Pan, Weiqiang Yang
We investigate the cosmological dynamics of interacting dark energy models in which the interaction function is a nonlinear in terms of the energy densities. Considering explicitly…
Reheating in quintessential inflation via gravitational production of heavy massive particles: A detailed analysis
Jaume Haro, Weiqiang Yang, Supriya Pan
An improved version of the well-known Peebles-Vilenkin model unifying early inflationary era to current cosmic acceleration, is introduced in order to match with the theoretical va…
Constraints on quintessence scalar field models using cosmological observations
Weiqiang Yang, M. Shahalam, Barun Pal +2
We consider a varieties of quintessence scalar field models in a homogeneous and isotropic geometry of the universe with zero spatial curvature aiming to provide stringent constrai…
Large-scale (in-) stability Analysis of an Exactly Solved Coupled Dark-Energy Model
Weiqiang Yang, Supriya Pan, Ramón Herrera +1
Assuming a non-gravitational interaction amongst the dark fluids of our universe namely, the dark matter and dark energy, we study a specific interaction model in the background of…
Cosmological constraints on an exponential interaction in the dark sector
Weiqiang Yang, Supriya Pan, Andronikos Paliathanasis
Cosmological models where dark matter (DM) and dark energy (DE) interact with each other are the general scenarios in compared to the non-interacting models. The interaction is usu…
The generalized Brans-Dicke theory and its cosmology
Jianbo Lu, Yabo Wu, Weiqiang Yang +2
A generalized Brans-Dicke (GBD) theory is proposed and studied in this paper. The interesting property has been found in the GBD theory, for example it can naturally solve the prob…
Late-time acceleration with steep exponential potentials
M. Shahalam, Weiqiang Yang, R. Myrzakulov +1
In this letter, we study the cosmological dynamics of steeper potential than exponential. Our analysis shows that a simple extension of an exponential potential allows to capture l…
Latest astronomical constraints on some nonlinear parametric dark energy models
Weiqiang Yang, Supriya Pan, Andronikos Paliathanasis
We consider nonlinear redshift-dependent equation of state parameters as dark energy models in a spatially flat Friedmann-Lemaître-Robertson-Walker universe. To depict the expansio…
Reconstruction of new holographic scalar field models of dark energy in Brans-Dicke Universe
Weiqiang Yang, Yabo Wu, Limin Song +4
Motivated by the work [K. Karami, J. Fehri, {\it Phys. Lett. B} {\bf 684}, 61 (2010)] and [A. Sheykhi, {\it Phys. Lett. B} {\bf 681}, 205 (2009)], we generalize their work to the n…
Energy Conditions and Stability in generalized gravity with arbitrary coupling between matter and geometry
Jun Wang, Ya-Bo Wu, Yong-Xin Guo +2
The energy conditions and the Dolgov-Kawasaki criterion in generalized gravity with arbitrary coupling between matter and geometry are derived in this paper, which are quite…