Mass–radius relation, moment of inertia and tidal love numbers of anisotropic neutron stars in f(R,T) gravity

The mass–radius relation, moment of inertia and tidal love numbers (TLNs) of anisotropic neutron stars (NSs) have been investigated in [Formula: see text] gravity by imposing two equations of state (EoS). We use the simplest form [Formula: see text] model and adopt the anisotropy approach called Horvat model. To examine the viability of our calculations, we utilize the constraints from GW170817 and GW190814 observations. Moreover, we consider three values of [Formula: see text], i.e. [Formula: see text], [Formula: see text], [Formula: see text] and four anisotropy parameters [Formula: see text], i.e. [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text]. Our findings suggest that all physical quantities depend on both parameters [Formula: see text] and [Formula: see text]. Nevertheless, the impact of [Formula: see text] is much more significant than [Formula: see text]. The calculation of masses satisfies each used constraint for specific values of [Formula: see text] and [Formula: see text]. In the case of the moment of inertia, the results are compatible with the constraint obtained from radio observation of heavy pulsar. On the other hand, the tidal deformability of the NSs composed of one EoS satisfies the GW170817 constraint while the NSs composed of the other one EoS are too small. These small numbers can be interpreted as the property of secondary object observed in GW190814. As a result, our theoretical investigation of NSs constructed with two EoS can be NSs candidates for GW170817 and GW190814, respectively.

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Publication Details

Journal
International Journal of Modern Physics D
Published
2025-12-30
DOI
https://doi.org/10.1142/s0218271825501007
Primary Topic
Pulsars and Gravitational Waves Research
Type
article
Field-Weighted Citation Impact
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article

Mass–radius relation, moment of inertia and tidal love numbers of anisotropic neutron stars in f(R,T) gravity

Muhammad Lawrence Pattersons, Freddy P. Zen, Yusmantoro Yusmantoro
International Journal of Modern Physics D
Pulsars and Gravitational Waves Research
article

Mass–radius relation, moment of inertia and tidal love numbers of anisotropic neutron stars in f(R,T) gravity

Muhammad Lawrence Pattersons, Freddy P. Zen, Yusmantoro Yusmantoro
article en

Abstract

The mass–radius relation, moment of inertia and tidal love numbers (TLNs) of anisotropic neutron stars (NSs) have been investigated in [Formula: see text] gravity by imposing two equations of state (EoS). We use the simplest form [Formula: see text] model and adopt the anisotropy approach called Horvat model. To examine the viability of our calculations, we utilize the constraints from GW170817 and GW190814 observations. Moreover, we consider three values of [Formula: see text], i.e. [Formula: see text], [Formula: see text], [Formula: see text] and four anisotropy parameters [Formula: see text], i.e. [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text]. Our findings suggest that all physical quantities depend on both parameters [Formula: see text] and [Formula: see text]. Nevertheless, the impact of [Formula: see text] is much more significant than [Formula: see text]. The calculation of masses satisfies each used constraint for specific values of [Formula: see text] and [Formula: see text]. In the case of the moment of inertia, the results are compatible with the constraint obtained from radio observation of heavy pulsar. On the other hand, the tidal deformability of the NSs composed of one EoS satisfies the GW170817 constraint while the NSs composed of the other one EoS are too small. These small numbers can be interpreted as the property of secondary object observed in GW190814. As a result, our theoretical investigation of NSs constructed with two EoS can be NSs candidates for GW170817 and GW190814, respectively.

International Journal of Modern Physics DVol. 35(03)
Bandung Institute of Technology (ID)
Openalex Percentile: Top 77%
Pulsars and Gravitational Waves Research
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