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Accretion of dark matter by stars
Richard Brito, Vitor Cardoso, Hirotada Okawa
Searches for dark matter imprints are one of the most active areas of current research. We focus here on light fields with mass , such as axions and axion-like candidates. Usi…
Black hole-neutron star binary merger: Dependence on black hole spin orientation and equations of state
Kyohei Kawaguchi, Koutarou Kyutoku, Hiroyuki Nakano +3
We systematically performed numerical-relativity simulations for black hole (BH) - neutron star (NS) binary mergers with a variety of the BH spin orientation and equations of state…
Collapse of massive fields in anti-de Sitter spacetime
Hirotada Okawa, Jorge C. Lopes, Vitor Cardoso
Gravitational collapse in asymptotically anti-de Sitter spacetime has a rich but poorly-understood structure. There are strong indications that some families of initial data form "…
Exploring tidal effects of coalescing binary neutron stars in numerical relativity II: Longterm simulations
Kenta Hotokezaka, Koutarou Kyutoku, Hirotada Okawa +1
We perform new longterm (15-16 orbits) simulations of coalescing binary neutron stars in numerical relativity using an updated Einstein's equation solver, employing low-eccentricit…
Dynamical mass ejection from black hole-neutron star binaries
Koutarou Kyutoku, Kunihito Ioka, Hirotada Okawa +2
We investigate properties of material ejected dynamically in the merger of black hole-neutron star binaries by numerical-relativity simulations. We systematically study the depende…
Testing General Relativity with Present and Future Astrophysical Observations
Emanuele Berti, Enrico Barausse, Vitor Cardoso +50
One century after its formulation, Einstein's general relativity has made remarkable predictions and turned out to be compatible with all experimental tests. Most of these tests pr…