Dark compact objects: an extensive overview

Abstract

We study the structure of compact objects that contain non-self annihilating, self-interacting dark matter admixed with ordinary matter made of neutron star and white dwarf materials. We extend the previous work Phys. Rev. D 92 123002 (2015) on these dark compact objects by analyzing the effect of weak and strongly interacting dark matter with particle masses in the range of 1-500 GeV, so as to set some constraints in the strength of the interaction and the mass of the dark matter particle. We find that the total mass of the compact objects increases with decreasing dark matter particle mass. In the strong interacting case and for dark matter particle masses in the range 1-10 GeV, the total mass of the compact objects largely exceeds the $2M_{\odot }$ constraint for neutron star masses and the nominal $1M_{\odot }$for white dwarfs, while for larger dark matter particle masses or in the weakly interacting case the compact objects show masses in agreement or smaller than these constraints, thus hinting at the exclusion of strongly self-interacting dark matter of masses 1-10 GeV in the interior of these compact objects. Moreover, we observe that the smaller the dark matter particle mass, the larger the quantity of dark matter captured is, putting constraints on the dark matter mass trapped in the compact objects so as to fullfill $\simeq 2M_{\odot }$ observations. Finally, the inhomogeneity of distribution of dark matter in the Galaxy implies a mass dependence of compact objects from the environment which can be used to put constraints on the characteristics of the Galaxy halo DM profile and on particle mass. In view of the these results, we discuss the formation of the dark compact objects in an homogeneous and non-homogeneous dark matter environment.

17pp, 11 figs, PRD in print

References in corpus (25)

• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• Dark Matter Results from 225 Live Days of XENON100 Data
• First results from DAMA/LIBRA and the combined results with DAMA/NaI
• Direct detection of a break in the teraelectronvolt cosmic-ray spectrum of electrons and positrons
• Neutron matter at next-to-next-to-next-to-leading order in chiral effective field theory
• WIMP Annihilation and Cooling of Neutron Stars
• Search for dark matter annihilations towards the inner Galactic halo from 10 years of observations with H.E.S.S
• Compact Stars as Dark Matter Probes
• Constraining Asymmetric Dark Matter through observations of compact stars
• Compact stars made of fermionic dark matter
• Energy Spectrum of Cosmic-ray Electron and Positron from 10 GeV to 3 TeV Observed with the Calorimetric Electron Telescope on the International Space Station
• Mirror dark matter and the new DAMA/LIBRA results: A simple explanation for a beautiful experiment
• Too massive neutron stars: The role of dark matter?
• Dark matter and structure formation a review
• Small-scale clumps of dark matter
• Technical Results from the Surface Run of the LUX Dark Matter Experiment
• Shear and rotation in Chaplygin cosmology
• A unified solution to the small scale problems of the $\Lambda$CDM model
• A high precision semi-analytic mass function
• Search for Low-Mass Dark Matter with CsI(Tl) Crystal Detectors
• Phase-space analysis of a class of k-essence cosmology
• A unified solution to the small scale problems of the $\Lambda$CDM model II: introducing parent-satellite interaction
• On the stability of strange dwarf hybrid stars
• The Fluorescence detector Array of Single-pixel Telescopes: Contributions to the 35th International Cosmic Ray Conference (ICRC 2017)