Presentation Title

Comparing Waveforms with Binary Neutron Star Parameters Produced by Different Approximates

Faculty Mentor

Jocelyn Read

Start Date

18-11-2017 9:59 AM

End Date

18-11-2017 11:00 AM

Location

BSC-Ursa Minor 149

Session

Poster 1

Type of Presentation

Poster

Subject Area

physical_mathematical_sciences

Abstract

Gravitational waves are ripples in space-time that are caused by changes in motion of large masses. The first detected gravitational waves were from two binary black holes merging into one. However, other candidates for binary mergers involve neutron stars, either as a merger between a neutron star with a black hole, or between two neutron stars. In this work I compare gravitational waves for different model frameworks for neuron-star and black-hole/neutron star mergers. I compare the gravitational waves for the same source parameters, like masses spins, using a match calculation similar to that used in gravitational-wave-searches. This match calculation compares the two waveforms weighted against a noise curve of LIGO’s selected interferometer at a certain range of time. We use the noise curves of LIGO’s interferometers located at Livingston, Louisiana and Hanford, Washington.

Summary of research results to be presented

Analysis of several match calculations indicated that with approximants that included tidal parameters, there was significant agreement between waveforms leading to match calculations close to 1, meaning a near 100% agreement in waveforms. However, when completing matches between approximants with and without tidal parameters included there was a much lower match value, as expected, since these waveforms produced would be different, since some parameters are excluded.

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Nov 18th, 9:59 AM Nov 18th, 11:00 AM

Comparing Waveforms with Binary Neutron Star Parameters Produced by Different Approximates

BSC-Ursa Minor 149

Gravitational waves are ripples in space-time that are caused by changes in motion of large masses. The first detected gravitational waves were from two binary black holes merging into one. However, other candidates for binary mergers involve neutron stars, either as a merger between a neutron star with a black hole, or between two neutron stars. In this work I compare gravitational waves for different model frameworks for neuron-star and black-hole/neutron star mergers. I compare the gravitational waves for the same source parameters, like masses spins, using a match calculation similar to that used in gravitational-wave-searches. This match calculation compares the two waveforms weighted against a noise curve of LIGO’s selected interferometer at a certain range of time. We use the noise curves of LIGO’s interferometers located at Livingston, Louisiana and Hanford, Washington.