Abstract The Laser Interferometer Space Antenna (LISA) has the potential to reveal wonders
about the fundamental theory of nature at play in the extreme gravity regime, where the …

Compact objects occupy a pivotal role in the exploration of Nature. The interest spans from
the role of compact objects in astrophysics to their detection through various methods …

We provide a theoretical model of F (R) gravity in which it is possible to describe in a unified
way inflation, an early and a late dark energy era, in the presence of a light axion particle …

Can a dynamically robust bosonic star (BS) produce an (effective) shadow that mimics that
of a black hole (BH)? We focus on models of spherical BSs with free scalar or vector fields …

The idea of stable, localized bundles of energy has strong appeal as a model for particles. In
the 1950s, John Wheeler envisioned such bundles as smooth configurations of …

We present a model of F (R) gravity in the presence of a string theory motivated
misalignment axion like particle materialized in terms of a canonical scalar field minimally …

We study the stability of rotating scalar boson stars, comparing those made from a simple
massive complex scalar (referred to as mini boson stars), to those with several different …

A real scalar field coupled to a fermion via a Yukawa term can evade no-go theorems
preventing solitonic solutions. For the first time, we study this model within general relativity …

General relativity predicts that black holes are described by the Kerr metric, which has
integrable geodesics. This property is crucial to produce accurate waveforms from extreme …

We present a generalisation of the curative initial data construction derived for equal-mass
compact binaries in Helfer et al (2019 Phys. Rev. D 99 044046; 2022 Class. Quantum Grav …