Journal
PHYSICAL REVIEW D
Volume 84, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.84.103006
Keywords
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Funding
- Virgo-EGO Scientific Forum
- Science & Technology Facilities Council [ST/H002359/1]
- COMPSTAR (an ESF Research Networking Programme)
- STFC [ST/H002359/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/H002359/1] Funding Source: researchfish
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We discuss the response of neutron stars to the tidal interaction in a compact binary system, as encoded in the Love number associated with the induced deformation. This problem is of interest for gravitational-wave astronomy as there may be a detectable imprint on the signal from the late stages of binary coalescence. Previous work has focused on simple barotropic neutron star models, providing an understanding of the role of the stellar compactness and overall density profile. We add realism to the discussion by developing the framework required to model stars with varying composition and an elastic crust. These effects are not expected to be significant for the next generation of detectors, but it is nevertheless useful to be able to quantify them. Our results show that (perhaps surprisingly) internal stratification has no impact whatsoever on the Love number. We also show that crust elasticity provides a (predictably) small correction to existing models.
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