Dark matter admixed neutron star as a possible compact component in the GW190814 merger event

HC Das, A Kumar, SK Patra - Physical Review D, 2021 - APS
We put constraints on the secondary component of GW190814 by analyzing the
observational data of the event. The relativistic mean-field models are used to calculate the …

Extreme matter meets extreme gravity: Ultraheavy neutron stars with phase transitions

H Tan, T Dore, V Dexheimer, J Noronha-Hostler… - Physical Review D, 2022 - APS
The speed of sound of the matter within neutron stars may contain nonsmooth structure
related to first-or higher-order phase transitions. Here we investigate what are the …

Recent multimessenger constraints and the anisotropic neutron star

A Rahmansyah, A Sulaksono - Physical Review C, 2021 - APS
The impact of anisotropic pressure models in neutron stars (NSs) is increasing their
compactness. Therefore, for the relatively soft NS equation of state (EOS), we can still obtain …

Heavy magnetic neutron stars

IA Rather, U Rahaman, V Dexheimer… - The Astrophysical …, 2021 - iopscience.iop.org
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 several …

[HTML][HTML] Quark models and radial oscillations: decoding the HESS J1731-347 compact object's equation of state

IA Rather, G Panotopoulos, I Lopes - The European Physical Journal C, 2023 - Springer
We investigate the peculiar nature of strange stars through an analysis of different quark
models, ie vBag model and CFL model equation of states at different parameter sets, and …

Exploring pathways to forming twin stars

M Naseri, G Bozzola, V Paschalidis - Physical Review D, 2024 - APS
A viable model for the dense matter equation of state above the nuclear saturation density
includes a hadron-to-quark phase transition at densities relevant to compact objects. In this …

Effects of the ϕ meson on the properties of hyperon stars in the density-dependent relativistic mean field model

ZH Tu, SG Zhou - The Astrophysical Journal, 2022 - iopscience.iop.org
The effects of the ϕ meson on the properties of hyperon stars are studied systematically in
the framework of the density-dependent relativistic mean field (DDRMF) model. The ϕ …

Compact star merger events with stars composed of interacting strange quark matter

A Kumar, VB Thapa, M Sinha - Monthly Notices of the Royal …, 2022 - academic.oup.com
We investigate the properties of stars participating in double compact star merger events
considering interacting model of stable strange quark matter. We model the matter making it …

Feeble DM-SM interaction via new scalar and vector mediators in rotating neutron stars

A Guha, D Sen - Journal of Cosmology and Astroparticle Physics, 2021 - iopscience.iop.org
We investigate the possible presence of dark matter (DM) in massive and rotating neutron
stars (NSs). For the purpose we extend our previous work [1] to introduce a light new physics …

Radial oscillations in neutron stars with delta baryons

IA Rather, KD Marquez, G Panotopoulos, I Lopes - Physical Review D, 2023 - APS
We investigate the effect of Δ baryons on the radial oscillations of neutron and hyperon stars,
employing a density-dependent relativistic mean-field model. The spin-3/2 baryons are …