All Outputs (5)

Extreme mass-ratio inspirals as probes of scalar fields: Eccentric equatorial orbits around Kerr black holes (2022)
Journal Article
Barsanti, S., Franchini, N., Gualtieri, L., Maselli, A., & Sotiriou, T. P. (2022). Extreme mass-ratio inspirals as probes of scalar fields: Eccentric equatorial orbits around Kerr black holes. Physical Review D, 106(4), Article 044029. https://doi.org/10.1103/physrevd.106.044029

We study binary systems in which a stellar mass compact object spirals into a massive black hole, known as extreme mass ratio inspirals, in scenarios with a new fundamental scalar field. Earlier work has shown that, in most interesting such scenarios... Read More about Extreme mass-ratio inspirals as probes of scalar fields: Eccentric equatorial orbits around Kerr black holes.

Stable spontaneously-scalarized black holes in generalized scalar-tensor theories (2022)
Journal Article
Antoniou, G., Macedo, C. F., McManus, R., & Sotiriou, T. P. (2022). Stable spontaneously-scalarized black holes in generalized scalar-tensor theories. Physical Review D, 106(2), Article 024029. https://doi.org/10.1103/physrevd.106.024029

It has been shown that the synergy of a scalar field coupling with both the Ricci scalar and the Gauss-Bonnet invariant significantly affects the properties of scalarized black holes and neutron stars, including their domain of existence and the amou... Read More about Stable spontaneously-scalarized black holes in generalized scalar-tensor theories.

Quantum gravity phenomenology at the dawn of the multi-messenger era—A review (2022)
Journal Article
Addazi, A., Alvarez-Muniz, J., Alves Batista, R., Amelino-Camelia, G., Antonelli, V., Arzano, M., …Zornoza, J. (2022). Quantum gravity phenomenology at the dawn of the multi-messenger era—A review. Progress in Particle and Nuclear Physics, 125, Article 103948. https://doi.org/10.1016/j.ppnp.2022.103948

The exploration of the universe has recently entered a new era thanks to the multi-messenger paradigm, characterized by a continuous increase in the quantity and quality of experimental data that is obtained by the detection of the various cosmic mes... Read More about Quantum gravity phenomenology at the dawn of the multi-messenger era—A review.

Detecting fundamental fields with LISA observations of gravitational waves from extreme mass-ratio inspirals (2022)
Journal Article
Maselli, A., Franchini, N., Gualtieri, L., Sotiriou, T. P., Barsanti, S., & Pani, P. (2022). Detecting fundamental fields with LISA observations of gravitational waves from extreme mass-ratio inspirals. Nature Astronomy, 6(4), 464-470. https://doi.org/10.1038/s41550-021-01589-5

The Laser Interferometer Space Antenna1, LISA, will detect gravitational wave signals from extreme mass-ratio inspirals2, where a stellar mass compact object orbits a supermassive black hole and eventually plunges into it. Here we report on LISA’s ca... Read More about Detecting fundamental fields with LISA observations of gravitational waves from extreme mass-ratio inspirals.

Ghost of vector fields in compact stars (2022)
Journal Article
Silva, H. O., Coates, A., Ramazanoǧlu, F. M., & Sotiriou, T. P. (2022). Ghost of vector fields in compact stars. Physical Review D, 105(2), Article 024046. https://doi.org/10.1103/PhysRevD.105.024046

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 systems. At the perturbative level it manifests as a tachyonic instab... Read More about Ghost of vector fields in compact stars.