Zobrazeno 1 - 10
of 837
pro vyhledávání: '"Bustillo, Juan"'
Autor:
Fontbuté, Joan, Andrade, Tomas, Luna, Raimon, Bustillo, Juan Calderón, Morrás, Gonzalo, Jaraba, Santiago, García-Bellido, Juan, Izquierdo, Germán López
We present a surrogate numerical-relativity model for close hyperbolic black-hole encounters with equal masses and spins aligned with the orbital momentum. Our model, generated in terms of the Newman-Penrose scalar $\psi_4$, spans impact parameters $
Externí odkaz:
http://arxiv.org/abs/2409.16742
Autor:
Luna, Raimon, Llorens-Monteagudo, Miquel, Lorenzo-Medina, Ana, Bustillo, Juan Calderón, Sanchis-Gual, Nicolas, Torres-Forné, Alejandro, Font, José A., Herdeiro, Carlos A. R., Radu, Eugen
Publikováno v:
Phys.Rev.D 110 (2024) 2, 024004
We present several high-accuracy surrogate models for gravitational-wave signals from equal-mass head-on mergers of Proca stars, computed through the Newman-Penrose scalar $\psi_4$. We also discuss the current state of the model extensions to mergers
Externí odkaz:
http://arxiv.org/abs/2404.01395
Pair-instability supernova (PISN) prevents black-hole formation from stellar collapse within the approximate mass range $M\in [65,130]M_\odot$. However, such black holes may form hierarchically through merging ancestral black holes, whose properties
Externí odkaz:
http://arxiv.org/abs/2404.00720
Rotating fermion-boson stars are hypothetical celestial objects that consist of both fermionic and bosonic matter interacting exclusively through gravity. Bosonic fields are believed to arise in certain models of particle physics describing dark matt
Externí odkaz:
http://arxiv.org/abs/2403.13052
Autor:
Bustillo, Juan Calderón, del Rio, Adrian, Sanchis-Gual, Nicolas, Chandra, Koustav, Leong, Samson H. W.
Precessing black-hole mergers can produce gravitational waves with net circular polarization, understood as an imbalance between right- and left-handed amplitudes. According to the Cosmological Principle, such emission must average to zero across all
Externí odkaz:
http://arxiv.org/abs/2402.09861
Autor:
Villa-Ortega, Verónica, Lorenzo-Medina, Ana, Bustillo, Juan Calderón, Ruiz, Milton, Guerra, Davide, Cerdá-Duran, Pablo, Font, José A.
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 experiments, o
Externí odkaz:
http://arxiv.org/abs/2310.20378
Observation of gravitational waves from inspiralling binary black holes has offered a unique opportunity to study the physical parameters of the component black holes. To infer these parameters, Bayesian methods are employed in conjunction with gener
Externí odkaz:
http://arxiv.org/abs/2309.01683
Publikováno v:
Phys. Rev. D 108, 124079 (2023)
Dense environments hosting compact binary mergers can leave an imprint on the gravitational-wave emission which, in turn, can be used to identify the characteristics of the environment. To demonstrate such scenario, we consider a simple setup of bina
Externí odkaz:
http://arxiv.org/abs/2308.03250
Autor:
Freitas, Osvaldo Gramaxo, Bustillo, Juan Calderón, Font, José A., Nunes, Solange, Onofre, Antonio, Torres-Forné, Alejandro
We evaluate several neural-network architectures, both convolutional and recurrent, for gravitational-wave time-series feature extraction by performing point parameter estimation on noisy waveforms from binary-black-hole mergers. We build datasets of
Externí odkaz:
http://arxiv.org/abs/2307.16668
Autor:
Andrade, Tomas, Trenado, Juan, Albanesi, Simone, Gamba, Rossella, Bernuzzi, Sebastiano, Nagar, Alessandro, Calderon-Bustillo, Juan, Sanchis-Gual, Nicolas, Font, Jose A., Cook, William, Daszuta, Boris, Zappa, Francesco, Radice, David
Dynamical captures of black holes may take place in dense stellar media due to the emission of gravitational radiation during a close passage. Detection of such events requires detailed modelling, since their phenomenology qualitatively differs from
Externí odkaz:
http://arxiv.org/abs/2307.08697