Proton capture in compact dark stars and observable implications
arXiv:2211.05845 · doi:10.1088/1475-7516/2023/10/027
Abstract
Asymmetric dark matter under certain conditions could form compact star-like objects, which can be searched either through gravitational lensing or by observation of gravitational waves from binaries involving such compact objects. In this paper we analyze possible signatures of such dark stars made of asymmetric dark matter with a portal to the Standard Model. We argue that compact dark stars could capture protons and electrons from the interstellar medium, which then accumulate in the core of the dark star, forming a very hot gas that emits X-rays or -rays. For dark matter parameters compatible with current laboratory constraints, compact dark stars could be sufficiently luminous to be detected at the Earth as point sources in the X-ray or -ray sky.
arXiv commentThis is the Accepted Manuscript version of an article accepted for publication in Journal of Cosmology and Astroparticle Physics. Neither SISSA Medialab Srl nor IOP Publishing Ltd is responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1475-7516/2023/10/027
References in corpus (35)
- Particle Dark Matter: Evidence, Candidates and Constraints
- Supersymmetric Dark Matter
- Dark Matter Candidates from Particle Physics and Methods of Detection
- Limits on the Macho Content of the Galactic Halo from the EROS-2 Survey of the Magellanic Clouds
- Non-Baryonic Dark Matter - Observational Evidence and Detection Methods
- Cosmological Simulations with Self-Interacting Dark Matter I: Constant Density Cores and Substructure
- Primordial Black Holes as a dark matter candidate
- Asymmetric Dark Matter: Theories, Signatures, and Constraints
- Review of asymmetric dark matter
- Constraints on Earth-mass primordial black holes from OGLE 5-year microlensing events
- MACHO Project Limits on Black Hole Dark Matter in the 1-30 Solar Mass Range
- WIMP Annihilation and Cooling of Neutron Stars
- Constraints on MACHO Dark Matter from Compact Stellar Systems in Ultra-Faint Dwarf Galaxies
- Formation of Solitonic Stars Through Gravitational Cooling
- Constraining Light Dark Matter with Diffuse X-Ray and Gamma-Ray Observations
- Constraining Asymmetric Dark Matter through observations of compact stars
- Limits on stellar-mass compact objects as dark matter from gravitational lensing of type Ia supernovae
- Dark Matter from new Technicolor Theories
- Search for sub-solar mass ultracompact binaries in Advanced LIGO's second observing run
- The end of the MACHO era- revisited: new limits on MACHO masses from halo wide binaries
- Black Holes' Dark Dress: On the merger rate of a subdominant population of primordial black holes
- A Grand Rotation Curve and Dark Matter Halo in the Milky Way Galaxy
- Boson Stars from Self-Interacting Dark Matter
- Multiscatter stellar capture of dark matter
- Distinguishing Primordial Black Holes from Astrophysical Black Holes by Einstein Telescope and Cosmic Explorer
- Asymmetric Dark Matter Stars
- Improved Treatment of Dark Matter Capture in Neutron Stars
- New Analysis of Neutron Star Constraints on Asymmetric Dark Matter
- Dark stars: gravitational and electromagnetic observables
- Structure Formation and Exotic Compact Objects in a Dissipative Dark Sector
- Constraining Primordial Black Holes with Dwarf Galaxy Heating
- Relativistic Thermal Bremsstrahlung Gaunt Factor for the Intracluster Plasma
- The Photon Spectrum of Asymmetric Dark Stars
- Diffuse X-Ray and Gamma-Ray Limits on Boson Stars that Interact with Nuclei
- Stefan-Boltzmann law for massive photons