The present paper reports a study on neutron stars in the f(R) gravity framework for the Hu-Sawicki model, Starobinsky model, Tsujikawa model, and Exponential Gravity model. First, we have used the TOV equation for the f(R) gravity framework, where we obtained two higher ...
<italic>Context. </italic>Rotation affects various aspects of the stellar structure and evolution. For example, it distorts the star and causes the energy flow to be dependent on the local gravity (von Zeipel effect). Recent advances in the semi-empirica
The parameters a and b are taken of order 1 km 2 . Arguments are given which suggest that the effective theory so obtained might be a fair approximation of a viable theory. A numerical integration is performed of the field equations for a free neutron gas. The result is that the star ...
General properties of neutron stars are briefly reviewed with an emphasis on the indispensability of general relativity in our understanding of these fascinating objects. In Newtonian gravity the pressure within a star merely plays the role of opposing self-gravity. In general relativity all sources ...
The structure of neutron starEquation of stateUsing the AV18 equation of state, we numerically calculate the structure of a neutron star in Rastall gravity. The results show that the parameter λ originated from Rastall gravity has a great effect on the mass and the radius of a neutron star...
pythonanalysisastronomysignal-processingphysicsopen-sciencevirgogravityligolisagravitational-wavespycbcblack-holeneutron-stargwastrocosmic-explorereinstein-telescope UpdatedOct 18, 2024 Python Castro (Compressible Astrophysics): An adaptive mesh, astrophysical compressible (radiation-, magneto-) hydrodynamics simulation...
In this work, we extend the relativistic theory of the tidal deformability of neutron stars to Rastall gravity. Both the electric-type and magnetic-type quadrupole tidal Love numbers are calculated for neutron stars in the polytrope model. It is found that neutron star's tidal Love numbers in...
More than 6,000 light years from the surface of the Earth, a rapidly-spinning neutron star called the Black Widow pulsar blasts its companion brown dwarf star with radiation as the two orbit each other every 9 hour...
The first indirect evidence for gravitational radiation was through measurements of the Hulse–Taylor binary in 1973. This system consists of a pulsar and neutron star in orbit around one another. Its orbital period has decreased since its initial discovery due to a loss of energy, which is cons...
Spherical neutron star models are studied within tensor-scalar theories of gravity. Particularly, it is shown that, under some conditions on the second derivative of the coupling function and on the star's mass, for a given star there exist two strong-scalar-field solutions as well as the ...