P. Cerdá–Durán
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View article: Populations Of Binary Compact Objects: The Present (GWTC-4) And The Future (Einstein Telescope)
Populations Of Binary Compact Objects: The Present (GWTC-4) And The Future (Einstein Telescope) Open
Plenary talk presented at the XXI International Workshop on Neutrino Telescopes - Padova 29 September - 3 October 2025 (https://agenda.infn.it/event/44606/)
View article: Subgrid modelling of MRI-driven turbulence in differentially rotating neutron stars
Subgrid modelling of MRI-driven turbulence in differentially rotating neutron stars Open
Following a binary neutron star (BNS) merger, the transient remnant is often a fast spinning, differentially rotating, magnetized hypermassive neutron star (HMNS). This object is prone to the magnetorotational instability (MRI) which drive…
View article: Protoneutron star oscillations including accretion flows
Protoneutron star oscillations including accretion flows Open
The gravitational wave signature from core-collapse supernovae (CCSNe) is dominated by quadrupolar oscillation modes of the newly born proto-neutron star (PNS), and could be detectable at galactic distances. We have developed a framework f…
View article: Towards asteroseismology of neutron stars with physics-informed neural networks
Towards asteroseismology of neutron stars with physics-informed neural networks Open
The study of the gravitational wave signatures of neutron star oscillations may provide important information of their interior structure and Equation of State (EoS) at high densities. We present a novel technique based on physically infor…
View article: Dynamical Stability of Hypermassive Neutron Stars against Quasi-radial Perturbations
Dynamical Stability of Hypermassive Neutron Stars against Quasi-radial Perturbations Open
The dynamical stability of differentially rotating neutron stars, including hypermassive neutron stars, is of paramount importance in understanding the fate of the postmerger remnant of binary neutron stars mergers and the formation of a b…
View article: Subgrid modelling of MRI-driven turbulence in differentially rotating neutron stars
Subgrid modelling of MRI-driven turbulence in differentially rotating neutron stars Open
Following a binary neutron star (BNS) merger, the transient remnant is often a fast-spinning, differentially rotating, magnetised hypermassive neutron star (HMNS). This object is prone to the magnetorotational instability (MRI) which drive…
View article: Dynamical stability of hypermassive neutron stars against quasi-radial perturbations
Dynamical stability of hypermassive neutron stars against quasi-radial perturbations Open
The dynamical stability of differentially rotating neutron stars, including hypermassive neutron stars, is of paramount importance in understanding the fate of the post-merger remnant of binary neutron stars mergers and the formation of a …
View article: Reformulation of Einstein equations in the Fully Constrained Formulation: local-uniqueness, post-Newtonian expansion and initial data
Reformulation of Einstein equations in the Fully Constrained Formulation: local-uniqueness, post-Newtonian expansion and initial data Open
Einstein equations can be written in the so-called Fully Constrained Formulation (FCF). This formulation has two different sectors: the elliptic sector, formed by the Hamiltonian and Momentum constraints together with the equations derived…
View article: Phenomenological gravitational waveforms for core-collapse supernovae
Phenomenological gravitational waveforms for core-collapse supernovae Open
Galactic core-collapse supernovae (CCSNe) are a target for current generation gravitational wave detectors with an expected rate of 1-3 per century. The development of data analysis methods used for their detection relies deeply on the ava…
View article: CCSNe detection perspectives with Einstein Telescope
CCSNe detection perspectives with Einstein Telescope Open
Core collapse supernovae are the most energetic explosions in the modern Universe and, because of their properties, they are considered a potential source of detectable gravitational waveforms for long time. The main obstacles to their det…
View article: Optically targeted search for gravitational waves emitted by core-collapse supernovae during the third observing run of Advanced LIGO and Advanced Virgo
Optically targeted search for gravitational waves emitted by core-collapse supernovae during the third observing run of Advanced LIGO and Advanced Virgo Open
We present the results from a search for gravitational-wave transients associated with core-collapse supernovae observed optically within 30 Mpc during the third observing run of Advanced LIGO and Advanced Virgo. No gravitational wave asso…
View article: Neutron stars in accreting systems – Signatures of the QCD phase transition
Neutron stars in accreting systems – Signatures of the QCD phase transition Open
Neutron stars (NS) that are born in binary systems with a main-sequence star companion can experience mass transfer, resulting in the accumulation of material at the surface of the NS. This, in turn, leads to the continuous growth of the N…
View article: Identifying thermal effects in neutron star merger remnants with model-agnostic waveform reconstructions and third-generation detectors
Identifying thermal effects in neutron star merger remnants with model-agnostic waveform reconstructions and third-generation detectors Open
We probe the intrinsic differences in simulated gravitational-wave signals from binary neutron star (BNS) mergers, arising from varying approaches to incorporating thermal effects in numerical-relativity modeling. We consider a hybrid appr…
View article: Neutron stars in accreting systems -- signatures of the QCD phase transition
Neutron stars in accreting systems -- signatures of the QCD phase transition Open
Neutron stars (NS) that are born in binary systems with a main-sequence star companion can experience mass transfer, resulting in the accumulation of material at the surface of the NS. This, in turn, leads to the continuous growth of the N…
View article: Self-consistent treatment of thermal effects in neutron-star post-mergers: observational implications for third-generation gravitational-wave detectors
Self-consistent treatment of thermal effects in neutron-star post-mergers: observational implications for third-generation gravitational-wave detectors Open
We assess the impact of accurate, self-consistent modelling of thermal effects in neutron-star merger remnants in the context of third-generation gravitational-wave detectors. This is done through the usage, in Bayesian model selection exp…
View article: Assessment of a new sub-grid model for magnetohydrodynamical turbulence – II. Kelvin–Helmholtz instability
Assessment of a new sub-grid model for magnetohydrodynamical turbulence – II. Kelvin–Helmholtz instability Open
The modelling of astrophysical systems such as binary neutron star mergers or the formation of magnetars from the collapse of massive stars involves the numerical evolution of magnetized fluids at extremely large Reynolds numbers. This is …
View article: Gravitational Wave Eigenfrequencies from Neutrino-driven Core-collapse Supernovae
Gravitational Wave Eigenfrequencies from Neutrino-driven Core-collapse Supernovae Open
Core-collapse supernovae (CCSNe) are predicted to produce gravitational waves (GWs) that may be detectable by Advanced LIGO/Virgo. These GW signals carry information from the heart of these cataclysmic events, where matter reaches nuclear …
View article: Virgo detector characterization and data quality: tools
Virgo detector characterization and data quality: tools Open
Detector characterization and data quality studies—collectively referred to as DetChar activities in this article—are paramount to the scientific exploitation of the joint dataset collected by the LIGO-Virgo-KAGRA global network of ground-…
View article: Bayesian inference from gravitational waves in fast-rotating, core-collapse supernovae
Bayesian inference from gravitational waves in fast-rotating, core-collapse supernovae Open
Core-collapse supernovae (CCSNe) are prime candidates for gravitational-wave detectors. The analysis of their complex waveforms can potentially provide information on the physical processes operating during the collapse of the iron cores o…
View article: Frequency-Dependent Squeezed Vacuum Source for the Advanced Virgo Gravitational-Wave Detector
Frequency-Dependent Squeezed Vacuum Source for the Advanced Virgo Gravitational-Wave Detector Open
In this Letter, we present the design and performance of the frequency-dependent squeezed vacuum source that will be used for the broadband quantum noise reduction of the Advanced Virgo Plus gravitational-wave detector in the upcoming obse…
View article: Multimessenger challenges for the detection of core collapse supernovae
Multimessenger challenges for the detection of core collapse supernovae Open
The recent discovery of gravitational waves and high-energy cosmic neutrinos, marked the beginning of a new era of the multimessenger astronomy. These new messengers, along with electromagnetic radiation and cosmic rays, give new insights …
View article: Prospects for the inference of inertial modes from hypermassive neutron stars with future gravitational-wave detectors
Prospects for the inference of inertial modes from hypermassive neutron stars with future gravitational-wave detectors Open
Some recent, long-term numerical simulations of binary neutron star mergers have shown that the long-lived remnants produced in such mergers might be affected by convective instabilities. Those would trigger the excitation of inertial mode…
View article: An Optically Targeted Search for Gravitational Waves emitted by Core-Collapse Supernovae during the Third Observing Run of Advanced LIGO and Advanced Virgo
An Optically Targeted Search for Gravitational Waves emitted by Core-Collapse Supernovae during the Third Observing Run of Advanced LIGO and Advanced Virgo Open
We present the results from a search for gravitational-wave transients associated with core-collapse supernovae observed optically within 30 Mpc during the third observing run of Advanced LIGO and Advanced Virgo. No gravitational wave asso…
View article: Black-hole excision scheme for general relativistic core-collapse supernova simulations
Black-hole excision scheme for general relativistic core-collapse supernova simulations Open
Fallback supernovae and the collapsar scenario for long-gamma ray burst and\nhypernovae have received considerable interest as pathways to black-hole\nformation and extreme transient events. Consistent simulations of these\nscenarios requi…
View article: Gravitational Wave Eigenfrequencies from Neutrino-Driven Core-Collapse Supernovae
Gravitational Wave Eigenfrequencies from Neutrino-Driven Core-Collapse Supernovae Open
Core-collapse supernovae are predicted to produce gravitational waves (GWs) that may be detectable by Advanced LIGO/Virgo. These GW signals carry information from the heart of these catacylsmic events, where matter reaches nuclear densitie…
View article: Maximum mass and stability of differentially rotating neutrons stars
Maximum mass and stability of differentially rotating neutrons stars Open
We present our study of stability of differentially rotating, axisymmetric neutron stars described by a polytropic equation of state with $Γ= 2$. We focus on quasi-toroidal solutions with a degree of differential rotation $\widetilde A=1$.…
View article: Prospects for the inference of inertial modes from hypermassive neutron stars with future gravitational-wave detectors
Prospects for the inference of inertial modes from hypermassive neutron stars with future gravitational-wave detectors Open
Some recent, long-term numerical simulations of binary neutron star mergers have shown that the long-lived remnants produced in such mergers might be affected by convective instabilities. Those would trigger the excitation of inertial mode…
View article: The Advanced Virgo+ status
The Advanced Virgo+ status Open
The gravitational wave detector Advanced Virgo+ is currently in the commissioning phase in view of the fourth Observing Run (O4). The major upgrades with respect to the Advanced Virgo configuration are the implementation of an additional r…
View article: Advanced Virgo Plus: Future Perspectives
Advanced Virgo Plus: Future Perspectives Open
While completing the commissioning phase to prepare the Virgo interferometer for the next joint Observation Run (O4), the Virgo collaboration is also finalizing the design of the next upgrades to the detector to be employed in the followin…
View article: Maximum Mass and Stability of Differentially Rotating Neutrons Stars
Maximum Mass and Stability of Differentially Rotating Neutrons Stars Open
We present our study of stability of differentially rotating, axisymmetric neutron stars described by a polytropic equation of state with Γ = 2.We focus on quasi-toroidal solutions with a degree of differential rotation A = 1.Our results s…