Gravitational field energy contribution to the neutron star mass
M.Dyrda, B.Kinasiewicz, M.Kutschera, A. Szmaglinski
TL;DR
This paper investigates how gravitational field energy contributes significantly to the total mass of neutron stars, showing that up to half of the maximum mass can be attributed to gravitational energy.
Contribution
It introduces three methods to calculate gravitational field energy in neutron stars, demonstrating their consistency and quantifying its substantial contribution to neutron star mass.
Findings
Gravitational field energy accounts for up to half of the neutron star's mass.
Three different approaches yield consistent gravitational energy calculations.
Results are provided for various realistic equations of state.
Abstract
Neutron stars are discussed as laboratories of physics of strong gravitational fields. The mass of a neutron star is split into matter energy and gravitational field energy contributions. The energy of the gravitational field of neutron stars is calculated with three different approaches which give the same result. It is found that up to one half of the gravitational mass of maximum mass neutron stars is comprised by the gravitational field energy. Results are shown for a number of realistic equations of state of neutron star matter.
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Taxonomy
TopicsPulsars and Gravitational Waves Research · Geophysics and Gravity Measurements · Atomic and Subatomic Physics Research