Dark Matter in Neutron Stars

Neutron stars provide a unique environment for testing dark-matter and beyond-standard-model physics. Their extreme densities, intense magnetic fields, compactness, and relativistic structure make them natural laboratories for studying how new particles and fields may affect astrophysical observables.

My work in this area focuses on dark-matter effects in neutron-star systems, including modifications to gravitational-wave emission, possible electromagnetic counterparts, and the role of axion-like particles in magnetized stellar environments.

Main topics

  • Dark matter in compact objects.
  • Axion and ALP distributions around neutron stars.
  • Scalar and pseudoscalar ALP-photon couplings.
  • Magnetically deformed neutron-star configurations.
  • Observable signatures in gravitational-wave and electromagnetic channels.

Publications

Resonant Axion-Photon Conversion in the Early Inspiral of Neutron Star Binaries

D. Suárez-Fontanella, M. Ángeles Pérez-García, C. Albertus

ApJ accepted, 2026

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Probing ALP-photon couplings in Neutron Stars: scalar versus pseudoscalar cases

D. Suárez-Fontanella, C. Albertus, M. Pérez-García

Physical Review D, 2025

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Gravitational Wave emission in Binary Neutron Star early post-merger within a dark environment

D. Suárez-Fontanella, D. Barba-González, C. Albertus, M. Pérez-García

Physics Letters B, 2025

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