Implications from GW170817 and I-Love-Q relations for relativistic hybrid stars
AffiliationUniv Arizona, Dept Astron & Phys, Theoret Astrophys Program
MetadataShow full item record
PublisherAMER PHYSICAL SOC
CitationPaschalidis, V., Yagi, K., Alvarez-Castillo, D., Blaschke, D. B., & Sedrakian, A. (2018). Implications from GW170817 and I-Love-Q relations for relativistic hybrid stars. Physical Review D, 97(8), 084038.
JournalPHYSICAL REVIEW D
Rights© 2018 American Physical Society
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at email@example.com.
AbstractGravitational wave observations of GW170817 placed bounds on the tidal deformabilities of compact stars, allowing one to probe equations of state for matter at supranuclear densities. Here we design new parametrizations for hybrid hadron-quark equations of state, which give rise to low-mass twin stars, and test them against GW170817. We find that GW170817 is consistent with the coalescence of a binary hybrid star-neutron star. We also test and find that the I-Love-Q relations for hybrid stars in the third family agree with those for purely hadronic and quark stars within similar to 3% for both slowly and rapidly rotating configurations, implying that these relations can be used to perform equation-of-state independent tests of general relativity and to break degeneracies in gravitational waveforms for hybrid stars in the third family as well.
VersionFinal published version
SponsorsExtreMe Matter Institute EMMI at the GSI Helmholtzzentrum fur Schwerionenphysik Darmstadt, Germany; Russian Science Foundation [7-12-01427]; COST Action [MP1304, GWverse CA16104]; Deutsche Forschungsgemeinschaft [SE 1836/3-2]