Finding Structure in the Speed of Sound of Supranuclear Matter from Binary Love Relations

Hung Tan, Veronica Dexheimer, Jacquelyn Noronha-Hostler, Nicolás Yunes

Research output: Contribution to journalArticlepeer-review

Abstract

Analyses that connect observations of neutron stars with nuclear-matter properties can rely on equation-of-state insensitive relations. We show that the slope of the binary Love relations (between the tidal deformabilities of binary neutron stars) encodes the baryon density at which the speed of sound rapidly changes. Twin stars lead to relations that present a signature "hill,""drop,"and "swoosh"due to the second (mass-radius) stable branch, requiring a new description of the binary Love relations. Together, these features can reveal new properties and phases of nuclear matter.

Original languageEnglish (US)
Article number161101
JournalPhysical review letters
Volume128
Issue number16
DOIs
StatePublished - Apr 22 2022

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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