39 citations · 228 across the 23 of their papers we have counts for
25 papers
Dark matter in neutron stars: two-fluid -mode oscillations in full general relativity
Prashant Thakur, Ishfaq Ahmad Rather, Y. Lim
A dark-matter core and a soft nuclear equation of state can produce similar mass--radius signatures, motivating a complementary probe through the -mode spectrum. We compute quad…
Ultra-compact twin stars with hybrid equations of state from bosonic dark matter
Ishfaq Ahmad Rather, Sarah Louisa Pitz, Jürgen Schaffner-Bielich
The properties of compact stars with a strong first-order phase transition to quark matter and with an additional fluid of self-interacting bosonic dark matter (DM) are studied. We…
Reaction-constrained composition \(g\)-modes in neutron stars with antikaon condensates, hyperons, and \(Δ(1232)\) resonances
Prashant Thakur, Ishfaq Ahmad Rather
We study core composition \(g_1\) modes of cold, nonrotating neutron stars containing antikaon condensates, hyperons, and \(Δ(1232)\) baryons and present, to our knowledge, the fir…
The petit four of color-superconducting phases in proto-neutron star evolution
Selina Kunkel, Ishfaq Ahmad Rather, Hosein Gholami +2
At high densities and moderate temperatures, hadronic matter is expected to undergo a first-order phase transition into a color-superconducting (CSC) state. A proto-neutron star de…
Constraining Axion-Like Particle mediated Dark Matter with Observational Constraints: A Statistical and Machine Learning Approach
Prashant Thakur, Aravind Taridalu, Ishfaq Ahmad Rather +2
We present a comprehensive study of axion-like particle (ALP) mediated dark matter (DM) effects on neutron star (NS) structure within a relativistic mean-field framework with non-l…
Effect of Dark matter and -cut potential on radial and non-radial oscillation modes in neutron stars
Prashant Thakur, Ishfaq Ahmad Rather, Y. Lim
We study the mesonic nonlinear (NL) interaction equation of state (EoS) employing the relativistic mean-field model and investigate the effect of -cut potential (NL- cut) and…
Radial and Non-Radial Oscillations of Protoneutron Stars with Hyperonic Composition
Prashant Thakur, Adamu Issifu, Ishfaq Ahmad Rather +2
This paper explores radial and non-radial oscillations of protoneutron stars (PNSs) as they evolve from hot, neutrino-rich configurations through deleptonization to cold, catalyzed…
Comprehensive Analysis of Constructing Hybrid Stars with an RG-consistent NJL Model
Jan-Erik Christian, Ishfaq Ahmad Rather, Hosein Gholami +1
In this work, we investigate the properties of hadronic and quark matter that would allow for a first order phase transition between them within neutron stars. To this end, we use…
Radial Oscillations in Hybrid Stars with Slow Quark Phase Transition
Ishfaq Ahmad Rather, Kauan D. Marquez, Betânia C. Backes +2
This study investigates the radial oscillations of hybrid neutron stars, characterized by a composition of hadronic external layers and a quark matter core. Utilizing a density-dep…
Non-Radial Oscillation Modes in Hybrid Stars with Hyperons and Delta Baryons
Ishfaq Ahmad Rather, Kau D. Marquez, Prashant Thakur +1
We study the effects of hyperons, delta baryons, and quark matter phase transitions on -mode oscillations in neutron stars. Using the density-dependent relativistic mean-field m…
Impact of hyperons on structural properties of neutron stars and hybrid stars within the regularized four-dimensional Einstein-Gauss-Bonnet gravity
Ishfaq Ahmad Rather, Grigoris Panotopoulos
We investigate the impact of hyperons and phase transition to quark matter on the structural properties of neutron stars within the regularized four-dimensional Einstein-Gauss-Bonn…
Astrophysical constraints on color-superconducting phases in compact stars within the RG-consistent NJL model
Hosein Gholami, Ishfaq Ahmad Rather, Marco Hofmann +2
We determine parameters of the renormalization group-consistent three-flavor color-superconducting Nambu-Jona-Lasinio (NJL) model that are suited to investigate possible compact-st…
Microscopic Investigation of Ground State Properties and Shape Evolution in Osmium Isotopes
Usuf Rahaman, M. Ikram, Ishfaq A. Rather +1
The present study focuses on investigating the shape evolution of neutron-rich even-even Osmium (Os) transitional nuclei within the range of neutron number N = 82 to N = 190. The i…
Radial Oscillations of Hybrid Stars and Neutron Stars including Delta baryons: The Effect of a Slow Quark Phase Transition
Ishfaq Ahmad Rather, Kauan D. Marquez, Betania C. Backes +2
We study radial oscillations of hybrid neutron stars composed of hadronic external layers followed by a quark matter core. We employ a density-dependent relativistic mean-field mod…
Quark Models and Radial Oscillations: Decoding the HESS J1731-347 Compact Object's Equation of State
Ishfaq Ahmad Rather, Grigoris Panotopoulos, Ilídio Lopes
We investigate the peculiar nature of strange stars through an analysis of different quark models, i.e. vBag model and CFL model equation of states at different parameter sets, and…
Radial Oscillations in Neutron Stars with Delta Baryons
Ishfaq A. Rather, Kauan D. Marquez, Grigoris Panotopoulos +1
We investigate the effect of baryons on the radial oscillations of neutron and hyperon stars, employing a density-dependent relativistic mean-field model. The spin- baryon…
Magnetic-Field Induced Deformation in Hybrid Stars
Ishfaq A. Rather, Asloob A. Rather, V. Dexheimer +3
The effects of strong magnetic fields on the deconfinement phase transition expected to take place in the interior of massive neutron stars are studied in detail for the first time…
Relativistic Mean Field Study of Neutron Stars and Hyperon Stars
Ishfaq Ahmad Rather
This thesis focuses on a variety of active research topics, such as nuclear matter, neutron stars, and phase transition within the framework of the RMF model. We use the previously…
Heavy Magnetic Neutron Stars
I. A. Rather, Usuf Rahaman, V. Dexheimer +2
We systematically study the properties of pure nucleonic and hyperonic magnetic stars using a density-dependent relativistic mean field (DD-RMF) equations of state. We explore seve…
Rotating neutron stars with quark cores
I. A. Rather, Usuf Rahaman, M. Imran +3
The rotating neutron star properties are studied with a phase transition to quark matter. The density-dependent relativistic mean-field model (DD-RMF) is employed to study the hadr…
Hadron-Quark phase transition in the context of GW190814
I. A. Rather, A. A. Usmani, S. K. Patra
The properties of the neutron stars are calculated for the hadronic matter within the density-dependent relativistic mean-field model (DD-RMF). The phase transition to the quark ma…
Effect of Inner Crust EoS on Neutron star properties
Ishfaq Ahmad Rather, Anisul Ain Usmani, Suresh Kumar Patra
The neutron star maximum mass and the radius are investigated within the framework of the relativistic mean-field (RMF) model. The variation in the radius at the canonical mass, $R…
Study of nuclear matter properties for Hybrid EoS
I. A. Rather, A. A. Usmani, S. K. Patra
We study the nuclear matter properties like symmetry energy, slope parameter, curvature, skewness and incompressibility for Hybrid EoS. The hybrid EoS is constructed using the rece…
Constraining Bag constant for Hybrid Neutron stars
I. A. Rather, A. Kumar, H. C. Das +3
We study the star matter properties for Hybrid equation of state (EoS) by varying the bag constant. We use the Effective-Field-Theory motivated Relativistic Mean-Field model (E-RMF…