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On the possible existence of quark stars

van Beek, Leander (2018) On the possible existence of quark stars. Bachelor's Thesis, Astronomy.

Bachelor Thesis - Leander van Beek.pdf

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Neutron stars are one of the final stages after a supernova explosion before the star collapses to a black hole. They are extremely massive and have a relatively small radius. One might wonder how the transition from a neutron star to a black hole happens and whether there might be an additional stage before collapse. In this thesis the possibility of finding such a metastable star, often hypothesised as a strange star, composed of up, down, and strange quarks, is examined on the basis of the TOV-equations and by making a model for a neutron star using the polytropic equation of state. From this model, a radius-pressure relation will be derived, such that the number of baryons can be determined within a radius r+∆r where ∆r is the resolution of the simulation. Using this information, the binding energy per added baryon to the neutron star is computed. From this, we conclude that it is energetically favourable to convert the star into a strange star if a process allows this. Models of stars with Λ0 concentrations up to 40% are also modelled, to see if they are degenerate with regular neutron stars. Observational properties of these stars are discussed.

Item Type: Thesis (Bachelor's Thesis)
Supervisor name: Mendez, R.M. and Onderwater, C.J.G.
Degree programme: Astronomy
Thesis type: Bachelor's Thesis
Language: English
Date Deposited: 01 Aug 2018
Last Modified: 02 Aug 2018 07:58

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