25 papers
Assessing the Impact of Instrumental Requirements on the Scientific Performance of the Einstein Telescope
Ulyana Dupletsa, Francesco Iacovelli, Mikhail Korobko +23
The paper evaluates how different design choices and noise characteristics of the Einstein Telescope affect its ability to detect and analyze various gravitational‑wave sources, us…
Are PTA measurements sensitive to gravitational wave non-Gaussianities?
Chiara Cecchini, Jonas El Gammal, Gabriele Franciolini +1
Observing non-Gaussianities in the timing residuals of Pulsar Timing Arrays (PTAs) has recently attracted attention as a potential discriminator between astrophysical and cosmologi…
Primordial Black-Hole-Based Pathways to Little Red Dots
Valerio De Luca, Loris Del Grosso, Gabriele Franciolini +4
The James Webb Space Telescope has uncovered a population of compact, high-redshift sources, the Little Red Dots (LRDs), which may host supermassive black holes (BHs) significantly…
GW231123: A Possible Primordial Black Hole Origin
Valerio De Luca, Gabriele Franciolini, Antonio Riotto
GW231123, the heaviest binary black hole merger detected by the LIGO-Virgo-KAGRA Collaboration to date, lies in the pair-instability mass gap and exhibits unusually high component…
Curvature Perturbations from First-Order Phase Transitions: Implications to Black Holes and Gravitational Waves
Gabriele Franciolini, Yann Gouttenoire, Ryusuke Jinno
Understanding whether primordial black holes form during strong first-order phase transition (FOPT) is a crucial open question in cosmology. We address this using a fully covariant…
Primordial black hole dark matter from axion inflation
Gabriele Franciolini, Nadir Ijaz, Marco Peloso
We revisit the production of primordial black holes (PBHs) by a U(1) gauge field with a pseudo-scalar coupling to the inflaton. We improve upon the existing literature by working i…