Author

Jorge Castelo Mourelle

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Preprint Oct 2026

Fermion-Boson Stars in Scalar-Tensor Gravity

In the massless Damour-Esposito-Far\`ese scalar-tensor theory of gravity, we numerically construct static, spherically symmetric star models composed of a mixture of fermionic and bosonic matter, interacting purely gravitationally. The fermionic sector is modeled as a perfect fluid, while the bosonic sector is describe...

Jorge Castelo Mourelle, S. Fakhry, Néstor Ortiz · 0 citations

Preprint Oct 2026

Scalar-Assisted Growth of Supermassive Black Holes: Boson-Mass Windows and Observational Constraints

We study a phenomenological cosmological model of black-hole growth in which a finite baryonic reservoir and a bosonic scalar cloud feed the black hole simultaneously. The baryonic component accretes through an Eddington-like channel, while the scalar cloud transfers mass through an effective quasibound-state decay rat...

Jorge Castelo Mourelle, Darío Núñez Zúñiga, S. Fakhry et al. · 0 citations