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The vacuum revealed: the final state of vacuum instabilities in compact stars
Paolo Pani, Vitor Cardoso, Emanuele Berti +2
Quantum fields in compact stars can be amplified due to a semiclassical instability. This generic feature of scalar fields coupled to curvature may affect the birth and the equilib…
Gravitational instabilities of superspinars
Paolo Pani, Enrico Barausse, Emanuele Berti +1
Superspinars are ultracompact objects whose mass M and angular momentum J violate the Kerr bound (cJ/GM^2>1). Recent studies analyzed the observable consequences of gravitational l…
Gravitational signature of Schwarzschild black holes in dynamical Chern-Simons gravity
C. Molina, Paolo Pani, Vitor Cardoso +1
Dynamical Chern-Simons gravity is an extension of General Relativity in which the gravitational field is coupled to a scalar field through a parity-violating Chern-Simons term. In…
Gravitational-wave signatures of the absence of an event horizon. II. Extreme mass ratio inspirals in the spacetime of a thin-shell gravastar
Paolo Pani, Emanuele Berti, Vitor Cardoso +2
We study gravitational-wave emission from the quasi-circular, extreme mass ratio inspiral of compact objects of mass m0 into massive objects of mass M>>m0 whose external metric is…