scispace - formally typeset
Open AccessJournal ArticleDOI

Neutron stars structure in the context of massive gravity

TLDR
In this paper, the structure of a spin$-2$ massive gravitons was studied in the presence of massive gravity in the form of a Neutron Star and the modifications of the TOV equation were explored in $4$ and higher dimensions.
Abstract
Motivated by the recent interests in spin$-2$ massive gravitons, we study the structure of neutron star in the context of massive gravity. The modifications of TOV equation in the presence of massive gravity are explored in $4$ and higher dimensions. Next, by considering the modern equation of state for the neutron star matter (which is extracted by the lowest order constrained variational (LOCV) method with the AV$18$ potential), different physical properties of the neutron star (such as Le Chatelier's principle, stability and energy conditions) are investigated. It is shown that consideration of the massive gravity has specific contributions into the structure of neutron star and introduces new prescriptions for the massive astrophysical objects. The mass-radius relation is examined and the effects of massive gravity on the Schwarzschild radius, average density, compactness, gravitational redshift and dynamical stability are studied. Finally, a relation between mass and radius of neutron star versus the Planck mass is extracted.

read more

Citations
More filters
Journal ArticleDOI

Stellar structure models in modified theories of gravity: Lessons and challenges

TL;DR: A broad overview of the main results achieved in the recent literature for many such modified theories of gravity, by combining the results and constraints obtained from the analysis of relativistic and non-relativistic stars in different scenarios is provided in this article.
Journal ArticleDOI

Light Particles with Spin in Inflation

TL;DR: The existence of light particles with spin during inflation is proven by the Higuchi bound as mentioned in this paper, which can be evaded if one considers states with a sizeable coupling with the inflaton foliation, since this breaks the de Sitter isometries.
Journal ArticleDOI

Stellar structure models in modified theories of gravity: lessons and challenges

TL;DR: A broad overview of the main results achieved in the recent literature, by combining the results and constraints obtained from the analysis of relativistic and non-relativistic stars in different scenarios, can be found in this article.
Journal ArticleDOI

Light Particles with Spin in Inflation

TL;DR: The existence of light particles with spin during inflation is proven by the Higuchi bound as discussed by the authors, which can be evaded if one considers states with a sizeable coupling with the inflaton foliation, since this breaks the de Sitter isometries.
Journal ArticleDOI

Relativistic stars in vector-tensor theories

TL;DR: In this paper, the relativistic star solutions in second-order generalized Proca theories characterized by a $U(1)$-breaking vector field with derivative couplings were studied.
References
More filters
Journal ArticleDOI

Observation of Gravitational Waves from a Binary Black Hole Merger

B. P. Abbott, +1011 more
TL;DR: This is the first direct detection of gravitational waves and the first observation of a binary black hole merger, and these observations demonstrate the existence of binary stellar-mass black hole systems.
Journal Article

The Observation of Gravitational Waves from a Binary Black Hole Merger

TL;DR: The first direct detection of gravitational waves and the first observation of a binary black hole merger were reported in this paper, with a false alarm rate estimated to be less than 1 event per 203,000 years, equivalent to a significance greater than 5.1σ.
MonographDOI

Black Holes, White Dwarfs, and Neutron Stars

TL;DR: In this paper, the soft file of a book collection of black holes white dwarfs and neutron stars can be downloaded and the book can be found on-line in this site.
Journal ArticleDOI

A two-solar-mass neutron star measured using Shapiro delay

TL;DR: Radio timing observations of the binary millisecond pulsar J1614-2230 that show a strong Shapiro delay signature are presented and the pulsar mass is calculated to be (1.97 ± 0.04)M⊙, which rules out almost all currently proposed hyperon or boson condensate equations of state.
Journal ArticleDOI

4D Gravity on a Brane in 5D Minkowski Space

TL;DR: In this article, the authors propose a mechanism by which four-dimensional Newtonian gravity emerges on a 3-brane in 5D Minkowski space with an infinite size extra dimension.
Related Papers (5)