Despite their long history and astrophysical importance, some of the key properties of
neutron stars are still uncertain. The extreme conditions encountered in their interiors …

In this article, I introduce ideas and techniques to extract information about the equation of
state of matter at very high densities from gravitational waves emitted before, during and …

Observations of neutron stars, whether in binaries or in isolation, provide information about
the internal structure of the most extreme material objects in the Universe. In this work, we …

The detection of GW170817 in gravitational waves provides unprecedented constraints on
the equation of state (EOS) of the ultradense matter within the cores of neutron stars (NSs) …

We perform a joint Bayesian inference of neutron-star mass and radius constraints based on
GW170817, observations of quiescent low-mass x-ray binaries (QLMXBs), photospheric …

The existence of quark matter inside the heaviest neutron stars has been the topic of
numerous recent studies, many of them suggesting that a phase transition to strongly …

A class of hybrid compact star equations of state is investigated that joins by a Maxwell
construction a low-density phase of hadronic matter, modeled by a relativistic mean-field …

We introduce a family of equations of state (EoS) for hybrid neutron star (NS) matter that is
obtained by a two-zone parabolic interpolation between a soft hadronic EoS at low densities …

We investigate the possibility that GW170817 was not the merger of two conventional
neutron stars (NS), but involved at least one if not two hybrid stars with a quark matter core …

We reconsider the problem of the hyperon puzzle and its suggested solution by quark
deconfinement within the two-phase approach to hybrid compact stars with recently …