2019/04/30 by Antonino Del Popolo, M. Deliyergiyev, Maksym Deliyergiyev +5 · 19 citations
Physics and Astronomy · #Astronomy #Astrophysics #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark matter #Dark matter halo #Galactic halo #Galaxy #Halo #Milky Way #Neutron star #Physics #Pulsar #Pulsars and Gravitational Waves Research #Scalar field dark matter #astro-ph.HE #gr-qc #hep-ph #nucl-th
paper · pdf · doi:10.1016/j.dark.2020.100484
published in Physics of the Dark Universe 28, 100484 (Elsevier BV) · 30pp 2figs
openalex publication_date 2020/01/30 · arxiv created 2020/02/06 · arxiv updated 2020/02/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We show that the pulsar mass depends on the environment, and that it decreases going towards the center of the Milky Way. This is due to two combined effects, the capture and accumulation of self-interacting, non-annihilating dark matter by pulsars, and the increase of the dark matter density going towards the galactic center. We show that mass decrease depends both on the density profile of dark matter, steeper profiles producing a faster and larger decrease of the pulsar mass, and on the strength of self-interaction. Once future observations will provide the pulsar mass in a dark matter rich environment, close to the galactic center, the present result will be able to put constraints on the characteristics of our Galaxy halo dark matter profile, on the nature of dark matter, namely on its annihilating or non-annihilating nature, on its strength of self-interaction, and on the particle mass.