352 citations · 3.7k across the 71 of their papers we have counts for
4 papers · 1 filter
The tidal gap: causality bound on exotic compact objects with applications in the solar and sub-solar mass range
Benedetta Russo, Alfredo Urbano
In this work, we highlight the existence of a lower limit on the tidal deformability parameter , determined by the requirement of relativistic causality. Additionally, by consid…
Fermion soliton stars
L. Del Grosso, G. Franciolini, P. Pani +1
A real scalar field coupled to a fermion via a Yukawa term can evade no-go theorems preventing solitonic solutions. For the first time, we study this model within General Relativit…
On gravitational echoes from ultracompact exotic stars
Alfredo Urbano, Hardi Veermäe
At the dawn of a golden age for gravitational wave astronomy, we must leave no stone unturned in our quest for new phenomena beyond our current understanding of General Relativity…
Black hole superradiance and polarization-dependent bending of light
Alexis D. Plascencia, Alfredo Urbano
An inhomogeneous pseudo-scalar field configuration behaves like an optically active medium. Consequently, if a light ray passes through an axion cloud surrounding a Kerr black hole…