Dark Matter Effects on the Compact Star Properties

Das, Harish Chandra; Kumar, Ankit; Kumar, Bharat; Patra, S. K.

doi:10.3390/galaxies10010014

Cited by 24 publications

(13 citation statements)

References 92 publications

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“…[89][90][91][92]. However, the possibility that neutron stars may accommodate other components than Standard Model matter, e.g., exotic material as Dark Matter [93][94][95][96], can be an obstacle for the safe theoretical modeling of a concise mass-radius relation in such a manner. Of course, inverting the posed problem with sufficiently precise data of masses and radii as input offers a promising avenue towards determining the EoS [17,89,[97][98][99][100][101].…”

Section: Solving Tov Equationsmentioning

confidence: 99%

Masses of Compact (Neutron) Stars with Distinguished Cores

2023

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In this paper, the impact of core mass on the compact/neutron-star mass-radius relation is studied. Besides the mass, the core is parameterized by its radius and surface pressure, which supports the outside one-component Standard Model (SM) matter. The core may accommodate SM matter with unspecified (or poorly known) equation-of-state or several components, e.g., consisting of admixtures of Dark Matter and/or Mirror World matter etc. beyond the SM. Thus, the admissible range of masses and radii of compact stars can be considerably extended.

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Section: Solving Tov Equationsmentioning

confidence: 99%

Masses of Compact (Neutron) Stars with Distinguished Cores

2023

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“…However, the possibility that neutron stars may accommodate other components than Standard Model matter, e.g. exotic material as Dark Matter [93][94][95][96], can be an obstacle for the safe theoretical modeling of a concise mass-radius relation in such a manner. Of course, inverting the posed problem with sufficiently precise data of masses and radii as input offers a promising avenue towards determining the EoS [17,89,[97][98][99][100][101].…”

Section: One-component Static Cool Compact Stars: Tov Equationsmentioning

confidence: 99%

Masses of compact (neutron) stars with distinguished cores

Zollner¹,

Ding²,

Kämpfer³

2023

Preprint

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The impact of the core mass on the compact/neutron-star mass-radius relation is studied. Besides the mass, the core is parameterized by its radius and surface pressure, which supports the outside one-component Standard Model (SM) matter. The core may accommodate SM matter with unspecified (or poorly known) equation-of-state or several components, e.g. consisting of admixtures of Dark Matter and/or Mirror World matter etc. beyond the SM. Thus, the admissible range of masses and radii of compact stars can be considerably extended.

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“…The Love number and dimensionless tidal deformability for only quadrupole case (l = 2) are calculated as described in Ref. [127]. The numerical values are given in Table III for considered EoSs.…”

Section: Neutron Star Observablesmentioning

confidence: 99%

Crustal properties of a neutron star within an effective relativistic mean-field model

et al. 2022

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We study the properties of pasta structures and their influence on the neutron star observables employing the effective relativistic mean-field theory (E-RMF). The compressible liquid drop model is used to incorporate the finite size effects, considering the possibility of non-spherical structures in the inner crust. The unified equation of state are constructed for several E-RMF parameters to study various properties such as pasta mass and thickness in the neutron star's crust. The majority of the pasta properties are sensitive to the symmetry energy in the subsaturation density region. Using the results from Monte Carlo simulations, we estimate the shear modulus of the crust in context of quasiperiodic oscillations from soft gamma-ray repeaters and calculate the frequency of fundamental torsional oscillation mode in the inner crust. Global properties of the neutron star such as mass-radius profile, the moment of inertia, crustal mass, crustal thickness and fractional crustal moment of inertia are worked out. The results are consistent with various observational and theoretical constraints.

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Dark Matter Effects on the Compact Star Properties

Cited by 24 publications

References 92 publications

Masses of Compact (Neutron) Stars with Distinguished Cores

Masses of Compact (Neutron) Stars with Distinguished Cores

Masses of compact (neutron) stars with distinguished cores

Crustal properties of a neutron star within an effective relativistic mean-field model

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