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Gravitational waves from inspiralling binary neutron stars

Miravet, Miquel (2019) Gravitational waves from inspiralling binary neutron stars. Bachelor's Thesis, Physics.


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Neutron stars can be viewed as elastic objects to which one can associate resonant frequencies. As two neutron stars spiral towards each other, gravitational waves are emitted with a frequency that is monotonically increasing. When this frequency becomes equal to the resonant frequency of one of the neutron stars, the star briefly gets excited and undergoes oscillations, which take away energy from the binary system. The result is a sudden speed up of the orbital motion, which gets imprinted upon the gravitational wave signal and is in principle observable, potentially yielding new information about the neutron star equation of state, that ultimately governs the effect. Though resonant excitations may not be observable with current gravitational wave detectors such as Advanced LIGO or Advanced Virgo, it is plausible that they will be visible with a planned future observatory called Einstein Telescope. The aim of the project is to asses, using the Fisher matrix formalism, to what extent the effect can be seen. In order to get an answer to this, one should analyze the errors in the parameter estimation of the inspiralling compact binary. Depending on the value of these errors, one can conclude whether or not certain parameters can be measurable in current and future gravitational wave detectors.

Item Type: Thesis (Bachelor's Thesis)
Supervisor nameSupervisor E mail
Broeck, C.F.F. van
Degree programme: Physics
Thesis type: Bachelor's Thesis
Language: English
Date Deposited: 05 Jul 2019
Last Modified: 16 Jul 2019 13:57

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