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Descalarization bursts from Galactic supramassive neutron stars: a kHz continuous-wave target
José Carlos Olvera M., Daniela D. Doneva, Pablo Cerdá-Durán +2
In massive scalar-tensor gravity, a scalarized neutron star must shed its scalar hair as it collapses into a black hole. Using 3D simulations of a realistic rotating progenitor we…
Differentially rotating neutron stars with dark matter cores
Lorenzo Cipriani, Violetta Sagun, Kalin V. Staykov +2
Dark matter is expected to accumulate inside neutron stars, modifying the structure of isolated stars and influencing both the dynamics of binary mergers and the evolution of the r…
Rapidly spinning dark matter-admixed neutron stars
Lorenzo Cipriani, Edoardo Giangrandi, Violetta Sagun +2
Millisecond pulsars, representing the older neutron star population, are believed to have undergone a prolonged period of dark matter accumulation, resulting in a higher dark matte…
Circular Orbits Structure and Thin Accretion Disks around Kerr Black Holes with Scalar Hair
Lucas G. Collodel, Daniela D. Doneva, Stoytcho S. Yazadjiev
In this paper we first investigate the equatorial circular orbit structure of Kerr black holes with scalar hair (KBHsSH) and highlight their most prominent features which are quite…
Probing the Nature of Black Holes: Deep in the mHz Gravitational-Wave Sky
Vishal Baibhav, Leor Barack, Emanuele Berti +26
Black holes are unique among astrophysical sources: they are the simplest macroscopic objects in the Universe, and they are extraordinary in terms of their ability to convert energ…
Orbital and epicyclic frequencies around rapidly rotating compact stars in scalar-tensor theories of gravity
Daniela D. Doneva, Stoytcho S. Yazadjiev, Nikolaos Stergioulas +2
We study the orbital and epicyclic frequencies of particles orbiting around rapidly rotating neutron stars and strange stars in a particular scalar-tensor theory of gravity. We fin…