13 papers
Does DESI prefer Damped Oscillating Dark Energy over Cosmological constant?
Saddam Hussain, Simran Arora, Qiang Wu +1
We investigate a dark-energy equation of state governed by a damped harmonic oscillator equation, admitting underdamped, critically damped, and overdamped solutions. Confronting th…
Constraints on Schwarzschild Black Hole in a Generalized Dehnen-Type Dark Matter Halo via the S2 Star Orbit around Sgr A
Tursunali Xamidov, Sanjar Shaymatov, Qiang Wu
The distribution of dark matter (DM) halo around supermassive black holes (BHs) may leave observable imprints on stellar dynamics near galactic centers. Motivated by this, we inves…
Interacting -essence field with non-pressureless Dark Matter: Cosmological Dynamics and Observational Constraints
Saddam Hussain, Qiang Wu, Tao Zhu
We investigate a class of interacting dark energy and dark matter (DM) models, where dark energy is modeled as a -essence scalar field with an inverse-square potential. Two gene…
Gravitational Wave Signatures from Periodic Orbits around a non-commutative inspired black hole surrounded by quintessence
Fazlay Ahmed, Qiang Wu, Sushant G Ghosh +1
We study gravitational wave emission from periodic orbits of a test particle around a noncommutative-inspired black hole surrounded by quintessence. Using the zoom-whirl taxonomy,…
Gravitational wave signatures from periodic orbits around a Schwarzschild-Bertotti-Robinson black hole
Tursunali Xamidov, Sanjar Shaymatov, Qiang Wu +1
In this paper, we investigate periodic bound orbits and gravitational wave (GW) emission in the Schwarzschild-Bertotti-Robinson (Schwarzschild-BR) spacetime-an exact electrovacuum…
Signatures of Quantum-Corrected Black Holes in Gravitational Waves from Periodic Orbits
Fazlay Ahmed, Qiang Wu, Sushant G Ghosh +1
We investigate gravitational wave emission from periodic timelike orbits of a test particle around a loop quantum gravity-inspired Schwarzschild black hole. The spacetime is charac…