May 13 – 19, 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

Implications from GW170817 and I-Love-Q relations for relativistic hybrid stars

May 15, 2018, 5:00 PM
2h 40m
First floor and third floor (Palazzo del Casinò)

First floor and third floor

Palazzo del Casinò

Poster High baryon density and astrophysics Poster Session


Prof. David Blaschke (University of Wroclaw)


Gravitational 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 and test them against GW170817. We find that GW170817 is consistent with the coalescence of a binary hybrid star-neutron star. We also find that the I-Love-Q relations for hybrid stars agree with those for realistic neutron stars and quark stars within ∼3% for both slowly and rapidly rotating configurations [1]. We extend this initial study that used multipolytrope EoS and piecewise constrant speed-of-sound modeling by a more realistic equation of state [2] with a strong deconfinement phase transition [2].

[1] V. Paschalidis et al., arxiv:1712.00451
[2] M. Bejger et al., A&A 600, A39 (2017).

Content type Theory
Centralised submission by Collaboration Presenter name already specified

Primary authors

Prof. David Blaschke (University of Wroclaw) Dr David Edwin Alvarez-Castillo (JINR Dubna) Dr Vasileios Paschalidis (University of Arizona) Dr Kent Yagi (University of Virginia) Prof. Armen Sedrakian (Frankfurt University) Prof. Michal Bejger (CAMK Warsaw)

Presentation materials