71 citations · 204 across the 10 of their papers we have counts for
10 papers
Screened Scalar Hair and the Weak-Lensing Separation of Black Holes from Neutron Stars in Quadratic Gravity
Yashmitha Kumaran, Ilídio Lopes
Quadratic gravity carries a massive scalar degree of freedom, the scalaron, whose finite range screens its influence on the geometry outside a compact object. We show th…
Weak gravitational lensing by a dark-matter-admixed neutron star: a self-consistent two-fluid halo and the Gauss--Bonnet deflection angle
Yashmitha Kumaran, Ilídio Lopes
We compute the weak gravitational deflection of light by a neutron star that carries a self-consistent dark-matter component, in the regime in which the dark matter forms an "exten…
Production of Gravitational Waves in the Early Universe From turbulence triggered by first-order phase transitions
Yashmitha Kumaran
This project is aimed at studying the first-order phase transitions, that is presumed to have ensued in the early universe, and its consequences on the primordial gravitational wav…
Radial oscillations of pulsating neutron stars: The UCIa equation-of-state case
G. Panotopoulos, A. Övgün, T. Iqbal +2
Radial oscillations provide a clean dynamical test of the high-density stiffness of neutron-star equations of state. We study spherically symmetric pulsations of nonrotating relati…
Implications of σ-cut potential on Antikaon condensates in neutron stars
Prashant Thakur, Yashmitha Kumaran, Lakshana Sudarsan +3
We investigate the properties of neutron stars with antikaon condensation in the framework of the Relativistic Mean-Field (RMF) model with a -cut potential. The well-known RMF m…
Shadow and deflection angle of asymptotic, magnetically-charged, non-singular black hole
Yashmitha Kumaran, Ali Övgün
In this paper, we present a detailed analysis of an asymptotic, magnetically-charged, non-singular (AMCNS) black hole. By utilizing the Gauss-bonnet theorem, we aim to unravel the…
Deflection angle and shadow of the Reissner-Nordström black hole with higher-order magnetic correction in Einstein-nonlinear-Maxwell fields
Yashmitha Kumaran, Ali Övgün
Nonlinear electrodynamics is known as the generalizations of Maxwell electrodynamics at strong fields and presents interesting features such as curing the classical divergences pre…
Deriving Weak Deflection Angle by Black Holes or Wormholes using Gauss-Bonnet Theorem
Yashmitha Kumaran, Ali Övgün
In this review, various researches on finding the bending angle of light deflected by a massive gravitating object which regard the Gauss-Bonnet theorem as the premise have been re…
Weak deflection angle by asymptotically flat black holes in Horndeski theory using Gauss-Bonnet theorem
Wajiha Javed, Jameela Abbas, Yashmitha Kumaran +1
The principal objective of this project is to investigate the gravitational lensing by asymptotically flat black holes in the framework of Horndeski theory in weak field limits. To…
Weak Deflection Angle of Extended Uncertainty Principle Black Holes
Yashmitha Kumaran, Ali Övgün
In this paper, we have discussed the effects of quantum fluctuations spewed by a black hole on its deflection angle. The Gauss-Bonnet theorem (GBT) is exploited with quantum correc…