Hinderer, Tanja and Lackey, Benjamin D. and Lang, Ryan N. and Read, Jocelyn S. (2010) Tidal deformability of neutron stars with realistic equations of state and their gravitational wave signatures in binary inspiral. Physical Review D, 81 (12). Art. No. 123016. ISSN 0556-2821 http://resolver.caltech.edu/CaltechAUTHORS:20100713-095837495
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The early part of the gravitational wave signal of binary neutron-star inspirals can potentially yield robust information on the nuclear equation of state. The influence of a star’s internal structure on the waveform is characterized by a single parameter: the tidal deformability λ, which measures the star’s quadrupole deformation in response to the companion’s perturbing tidal field. We calculate λ for a wide range of equations of state and find that the value of λ spans an order of magnitude for the range of equation of state models considered. An analysis of the feasibility of discriminating between neutron-star equations of state with gravitational wave observations of the early part of the inspiral reveals that the measurement error in λ increases steeply with the total mass of the binary. Comparing the errors with the expected range of λ, we find that Advanced LIGO observations of binaries at a distance of 100 Mpc will probe only unusually stiff equations of state, while the proposed Einstein Telescope is likely to see a clean tidal signature.
|Additional Information:||© 2010 The American Physical Society. Received 18 November 2009; published 23 June 2010. We thank S. Hughes, E. Flanagan, and J. Friedman for helpful suggestions and J. Creighton for carefully reading the manuscript. The work was supported in part by NSF Grant No. PHY-0503366, and by the Deutsche Forschungsgemeinschaft SFB/TR7. T.H. gratefully acknowledges support from the Sherman Fairchild Foundation, and B. L. also thanks the Wisconsin Space Grant Consortium program for support. R. N. L. was supported by NSF Grant No. PHY-0449884 and the NASA Postdoctoral Program, administered by Oak Ridge Associated Universities through a contract with NASA.|
|Classification Code:||PACS: 95.85.Sz, 04.40.Dg, 26.60.Kp|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||13 Jul 2010 20:36|
|Last Modified:||26 Dec 2012 12:13|
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