From the 1 of 6 linked papers with an AI index.
6 papers
Coupled by Design: Computing Kerr-Newman Quasinormal Modes with a Hybrid SpectralPINN Solver
Alexandre M. Pombo
The paper introduces a hybrid SpectralPINN solver for calculating quasinormal mode frequencies of charged Kerr‑Newman black holes by solving coupled gravitational and electromagnet…
-balls, neural networks and galaxy rotation curves
Alexandre M. Pombo, Lorenzo Pizzuti, Alessandra di Giacomo
Can a dynamically robust (\textit{aka} stable) -ball reproduce the rotation curve of a disk galaxy? In an astrophysical environment, -balls are non-topological solitons that…
Teukolsky by Design: A Hybrid Spectral-PINN solver for Kerr Quasinormal Modes
Alexandre M. Pombo, Lorenzo Pizzuti
We introduce SpectralPINN, a hybrid pseudo-spectral/physics-informed neural network (PINN) solver for Kerr quasinormal modes that targets the Teukolsky equation in both the separat…
Black holes and solitonic objects with bosonic fields
Alexandre M. Pombo
Black holes (BH) are among the most unusual and exciting physical objects. Besides being simultaneously Relativistic and quantum mechanical objects, which allows the discovery and/…
Mass Modeling and Kinematics of Galaxy Clusters in Modified Gravity
Lorenzo Pizzuti, Yacer Boumechta, Sandeep Haridasu +6
The chameleon screening mechanism has been constrained many a time using dynamic and kinematic galaxy cluster observables. Current constraints are, however, insensitive to differen…
The shape of the Chameleon fifth-force on the mass components of galaxy clusters
Lorenzo Pizzuti, Valentina Amatori, Alexandre M. Pombo +1
In the context of Chameleon gravity, we present a semi-analytical solution of the chameleon field profile in accurately modelled galaxy cluster's mass components, namely: the stell…