On the ambiguity in relativistic tidal deformability

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38 Scopus citations


The LIGO collaboration recently reported the first gravitational-wave constraints on the tidal deformability of neutron stars. I discuss an inherent ambiguity in the notion of relativistic tidal deformability that, while too small to affect the present measurement, may become important in the future. I propose a new way to understand the ambiguity and discuss future prospects for reliably linking observed gravitational waveforms to compact object microphysics.

Original languageEnglish (US)
Article number085002
JournalClassical and Quantum Gravity
Issue number8
StatePublished - Mar 12 2018


  • black holes
  • gravitational waves
  • neutron stars
  • tidal deformability

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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