Tori around neutron stars
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A model of fluid tori which can exist around a rotating neutron star, based on exact general relativistic calculations
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- Physics & Astronomy
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- Creative Commons — Attribution
This model represents two configurations of the maximal size of an accreting torus around a rotating neutron star in scale 1:2.68 million.
The star has a diameter of 22 km (8.2 mm). The smaller torus is the largest possible cusp-filling torus closest to the surface of this neutron star. The larger torus is the same but for a star with a diameter of 20 km (7.5 mm). The cusp torus is the largest possible accretion torus based on the “Polish doughnut” model of radiation pressure supported accretion disk of Jaroszyncki+ 1980,Abramowicz+ 1978 on the background on the Hartle-Thorne metric (Hartle&Thorne 1968), where the parameters of the spacetime, the neutron star mass, radius, spin frequency and quadrupole moment are connected through the universal relations Urbanec+ 2013.
The model was calculated using the Wolfram Mathematica Notebook "The surface of a torus in the vicinity of a neutron star created by M. Matuszková (Matuszková+ 2024).
Print with skirt and supports, works best with PLA. All files are in the correct scale.