GIUV2026-014
University of Valencia's research group on Gravitational Waves and Numerical Relativity. Our lines of research focus on numerical relativity, gravitational-wave data analysis, the characterization of gravitational-wave detectors, and multi-messenger astrophysics. Members of the GWNR group are affiliated with the Virgo Collaboration, the Einstein Telescope Collaboration, and the LISA mission. The group contributes to the observing campaigns of the LIGO-Virgo-KAGRA (LVK) network of gravitational-wave detectors, playing an important role in the scientific exploitation of the observational data. In addition, the group also carries out cutting-edge research in modified gravity, in various theories beyond General Relativity. The GWNR group is internationally recognized for the so-called "Valencia formulation" of relativistic hydrodynamics, an approach adopted by most numerical relativity groups worldwide to simulate the dynamics of neutron stars and compute waveforms, as well as for the production of the first gravitational signals obtained in relativistic simulations of stellar collapse, which have been used by the LVK collaboration to perform searches. The group has led pioneering...University of Valencia's research group on Gravitational Waves and Numerical Relativity. Our lines of research focus on numerical relativity, gravitational-wave data analysis, the characterization of gravitational-wave detectors, and multi-messenger astrophysics. Members of the GWNR group are affiliated with the Virgo Collaboration, the Einstein Telescope Collaboration, and the LISA mission. The group contributes to the observing campaigns of the LIGO-Virgo-KAGRA (LVK) network of gravitational-wave detectors, playing an important role in the scientific exploitation of the observational data. In addition, the group also carries out cutting-edge research in modified gravity, in various theories beyond General Relativity. The GWNR group is internationally recognized for the so-called "Valencia formulation" of relativistic hydrodynamics, an approach adopted by most numerical relativity groups worldwide to simulate the dynamics of neutron stars and compute waveforms, as well as for the production of the first gravitational signals obtained in relativistic simulations of stellar collapse, which have been used by the LVK collaboration to perform searches. The group has led pioneering research on electromagnetic and gravitational correlations in compact binaries, the amplification of magnetic fields in rotating proto¿neutron stars and in neutron-star mergers, the viability of neutron-star asteroseismology using gravitational waves, the scalarization of black holes, and has proposed the possible existence of bosonic stars, showing that real events detected by the LVK collaboration could be explained by exotic alternatives to black hole mergers.
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- Oscilaciones de estrellas de neutrones y astrosismología.
- Objetos Compactos Exóticos y miscelánea de agujeros negros.
- Ondas gravitacionales más allá de la Relatividad General.
- Relatividad Numérica: formulaciones y métodos.
- Generación de modelos de formas de ondas gravitacionales.
- Estimación de parámetros de ondas gravitacionales.
- Efecto lente gravitacional en ondas gravitacionales.
- Estudios de polarización de ondas gravitacionales.
- Caracterización del detector Advanced Virgo+.
- Seguimiento electromagnético de fuentes de ondas gravitacionales.
- Ingeniería de software y computación.
- Puesta en marcha de las actualizaciones de Advanced Virgo+ en preparación para O5.
- Desarrollo de nuevas pipelines en preparación para O5.
- Participación en comités y tareas de servicio de Advanced Virgo+.
- Distribución de la excentricidad en fusiones de estrellas de neutrones formadas dinámicamente.
- Física nuclear en estrellas de neutrones.
- Fusiones de binarias de estrellas de neutrones y remanentes de estrellas de neutrones hipermasivas post-fusión.
- Modelling of astrophysical sources of gravitational waves.This line of research encompasses the group's efforts in the numerical modeling of astrophysical sources of gravitational waves. It includes numerical relativity simulations of gravitational collapse (core collapse supernovae, black hole formation) and coalescences of compact binaries (black holes, neutron stars, and exotic compact objects such as boson stars), both in general relativity and modified gravity theories.
- Gravitational-wave data analysis.This line of research encompasses the group's efforts in data analysis of gravitational wave signals, both simulated and observed by the network of detectors of the LVK collaboration. It includes the generation of waveforms using numerical relativity simulations and generative artificial intelligence techniques; the estimation of parameters of the astrophysical sources that produce gravitational-wave signals (in compact binary coalescences and supernova explosions), using both Bayesian inference techniques and Deep Learning; the analysis of gravitational lensing effects on gravitational waves (including microlensing and exotic lenses such as cosmic strings); studies of gravitational-wave polarization; the characterization of detectors through the classification and denoising of non-astrophysical noise sources (glitches) using Deep Learning and Sparse Dictionary Learning techniques; and the participation in electromagnetic searches for counterparts of the gravitational-wave signals observed by the LVK collaboration.
- Contributions to Advanced Virgo.This research line encompasses the group efforts in the operations of the Advanced Virgo gravitational-wave detector. Our group participates in the commissioning of the Virgo detector upgrade, both in terms of characterizing its noise sources and in contributions to the instrumentation (such as the acquisition and purchase of ultra-high vacuum pumping stations to meet the design specifications of the detector). In addition, we also participate in the development of new pipelines for the LVK Collaboration's O5 campaign and for the Einstein Telescope, including pipelines for supernova signal detection, proto-neutron star inference, and detection of gravitational lensing effects in signals produced by black hole coalescences, among others. Finally, GWNR members are very actively involved in Advanced Virgo+ and Virgo Collaboration committees (in particular, the Virgo Steering Committee, the Virgo Executive Committee, and the Virgo Editorial Board), as well as in various service activities within the Bursts, CBC, and DetChar working groups, and in shifts for the Rapid Response Team and the Parameter Estimation ROTA, among others.
| Name | Nature of participation | Entity | Description |
|---|---|---|---|
| JOSE ANTONIO FONT RODA | Director | Universitat de València | |
| Research team | |||
| PABLO CERDA DURAN | Member | Universitat de València | |
| ALEJANDRO TORRES FORNE | Member | Universitat de València | |
| NICOLAS SANCHIS GUAL | Member | Universitat de València | |
| SAMUEL SANTOS PEREZ | Member | Universitat de València | |
| CLAUDIO CESAR LAZARTE MELGAR | Member | Universitat de València | |
| GABRIELE PALLONI | Member | Universitat de València | |
| INES ANDRADE RAINHO | Collaborator | Universitat de València | |
| ANASTASIOS THEODOROPOULOS | Collaborator | Universitat de València | |
| GIUSEPPE RIVIECCIO | Collaborator | Universitat de València | |
| NINO VILLANUEVA ESPINOSA | Collaborator | Universitat de València | |
| DANIELA DONEVA | Collaborator | Universitat de València | |
| SAEED FAKHRY | Collaborator | Universitat de València | |
| TIAGO SARAIVA FERNANDES | Collaborator | UNIVERSIDADE DE AVEIRO | PhD student from other entities |
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- Astronomy and Astrophysics
- HIGH-PERFORMANCE COMPUTING
- BLACK HOLES
- ARTIFICIAL INTELLIGENCE
- GENERAL RELATIVITY
- NUMERICAL RELATIVITY
- GRAVITATIONAL WAVES
- NEUTRON STARS
- BOSON STARS
- SUPERNOVAE
- SUERCOMPUTING
- MODIFIED GRAVITY
- RELATIVISTIC ASTROPHYSICS
- BAYESIAN INFERENCE
