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Searching for Gravitational Waves with Gaia and its Cross-Correlation with PTA: Absolute vs Relative Astrometry
Massimo Vaglio, Mikel Falxa, Giorgio Mentasti +5
Astrometric missions like Gaia provide exceptionally precise measurements of stellar positions and proper motions. Gravitational waves traveling between the observer and distant st…
Scalar emission from neutron star-black hole binaries in scalar-tensor theories with kinetic screening
Ramiro Cayuso, Adrien Kuntz, Miguel Bezares +1
We explore scalar radiation from neutron star-black hole binaries in scalar-tensor theories with kinetic screening (-essence). Using 3+1 numerical relativity simulations in the…
Black Holes Inside and Out 2024: visions for the future of black hole physics
Niayesh Afshordi, Abhay Ashtekar, Enrico Barausse +27
The gravitational physics landscape is evolving rapidly, driven by our ability to study strong-field regions, in particular black holes. Black Holes Inside and Out gathered world e…
Perturbations of the Vaidya metric in the frequency domain: Quasi-normal modes and tidal response
Lodovico Capuano, Luca Santoni, Enrico Barausse
The mass of a black hole can dynamically evolve due to various physical processes, such as for instance accretion, Hawking radiation, absorption of gravitational/electromagnetic wa…
Possible Causes of False General Relativity Violations in Gravitational Wave Observations
Anuradha Gupta, K. G. Arun, Enrico Barausse +40
General relativity (GR) has proven to be a highly successful theory of gravity since its inception. The theory has thrivingly passed numerous experimental tests, predominantly in w…
Nonlinear quasinormal mode detectability with next-generation gravitational wave detectors
Sophia Yi, Adrien Kuntz, Enrico Barausse +4
In the aftermath of a binary black hole merger event, the gravitational wave signal emitted by the remnant black hole is modeled as a superposition of damped sinusoids known as qua…
Angular momentum sensitivities in scalar-tensor theories
Adrien Kuntz, Enrico Barausse
Scalar-tensor theories have a long history as possible phenomenological alternatives to General Relativity, but are known to potentially produce deviations from the (strong) equiva…