Constructing Love-Q-Relations with Gravitational Wave Detections

Abstract

Quasi-universal relations connecting the tidal deformability and the quadrupole moment of individual neutron stars are predicted by theoretical computations, but have not been measured experimentally. However, such relations are employed during the interpretation of gravitational waves and, therefore, have a direct impact on the interpretation of real data. In this work, we study how quasi-universal relations can be tested and measured from gravitational wave signals connected to binary neutron star coalescences. We study a population of $120$ binary neutron star systems and find that Advanced LIGO and Advanced Virgo at design sensitivity could find possible deviations of predicted relations if the observed neutron stars are highly spinning. In the future, a network of third generation (3G) detectors will be able to even allow a measurement of quasi-universal relations. Thus, the outlined approach provides a new test of general relativity and nuclear physics predictions.

5 pages, 3 figures

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Cited by in corpus (8)

• Interpreting Binary Neutron Star Mergers: Describing the Binary Neutron Star Dynamics, Modelling Gravitational Waveforms, and Analyzing Detections
• Neutron stars and the dense matter equation of state: from microscopic theory to macroscopic observations
• Parameter estimation for strong phase transitions in supranuclear matter using gravitational-wave astronomy
• Measuring tidal effects with the Einstein Telescope: A design study
• Assessing equation of state-independent relations for neutron stars with nonparametric models
• Impact of unmodeled eccentricity on the tidal deformability measurement and implications for gravitational wave physics inference
• Dark Matter-admixed Rotating White Dwarfs as Peculiar Compact Objects
• Inferring neutron-star Love-Q relations from gravitational waves in the hierarchical Bayesian framework