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The ghost of vector fields in compact stars
Hector O. Silva, Andrew Coates, Fethi M. Ramazanoğlu +1
Spontaneous scalarization is a mechanism that allows a scalar field to go undetected in weak gravity environments and yet develop a nontrivial configuration in strongly gravitating…
Eikonal quasinormal modes of black holes beyond general relativity III: scalar Gauss-Bonnet gravity
Albert Bryant, Hector O. Silva, Kent Yagi +1
In a recent series of papers we have shown how the eikonal/geometrical optics approximation can be used to calculate analytically the fundamental quasinormal mode frequencies assoc…
Improved gravitational-wave constraints on higher-order curvature theories of gravity
Scott E. Perkins, Remya Nair, Hector O. Silva +1
Gravitational wave observations of compact binaries allow us to test general relativity (and modifications thereof) in the strong and highly-dynamical field regime of gravity. Here…
Quasinormal modes of slowly-rotating black holes in dynamical Chern-Simons gravity
Pratik Wagle, Nicolas Yunes, Hector O. Silva
The detection of gravitational waves from compact binary mergers by the LIGO/Virgo collaboration has, for the first time, allowed us to test relativistic gravity in its strong, dyn…
Square Peg in a Circular Hole: Choosing the Right Ansatz for Isolated Black Holes in Generic Gravitational Theories
Yiqi Xie, Jun Zhang, Hector O. Silva +3
The metric of a spacetime can be greatly simplified if the spacetime is circular. We prove that in generic effective theories of gravity, the spacetime of a stationary, axisymmetri…
The Role of Strong Gravity and the Nuclear Equation of State on Neutron-Star Common-Envelope Accretion
A. Miguel Holgado, Hector O. Silva, Paul M. Ricker +1
Common-envelope evolution is important in the formation of neutron star binaries within the isolated binary formation channel. As a neutron star inspirals within the envelope of a…