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494 papers · 1 filter
Rotating Fermion-Boson Stars in -squared Gravity
Saeed Fakhry, Jorge Castelo Mourelle, Nicolas Sanchis-Gual +3
Fermion-boson stars are compact equilibrium configurations composed of ordinary fermionic matter and a bosonic dark component interacting only through gravity. Such systems provide…
Constraint-satisfying binary boson star initial data via XCFC
Gabriele Palloni, Nicolas Sanchis-Gual, José A. Font +4
Numerical-relativity simulations with non-trivial matter configurations require initial data that satisfy the Hamiltonian and momentum constraints of the Einstein equations. We con…
Rapidly Rotating Neutron Star Collapse in Massive Scalar-Tensor Theories
José Carlos Olvera M., Daniela D. Doneva, Pablo Cerdá-Durán +2
We present a full 3D numerical evolution code to study neutron stars in massive-scalar-tensor theories. The code is embedded in the Einstein Toolkit framework and its implementatio…
GW240925 and GW250207: Astrophysical Calibration of Gravitational-wave Detectors
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1839
GW240925 and GW250207 are two loud gravitational-wave signals from binary black hole coalescences observed with network signal-to-noise ratios and , respectively…
Searches for Continuous Gravitational Waves from Supernova Remnants in the first part of the LIGO-Virgo-KAGRA Fourth Observing run
The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1764
We present results from directed searches for continuous gravitational waves from a sample of 15 nearby supernova remnants, likely hosting young neutron star candidates, using data…
Multimessenger Signatures of Tilted, Self-Gravitating, Black Hole Disks
Milton Ruiz, Antonios Tsokaros, Stuart L. Shapiro
We perform fully relativistic GRMHD simulations of magnetized, self-gravitating black hole-disk (BHD) systems in which the black hole spin is misaligned with the disk angular momen…