Diluted Axion Star Collisions with Neutron Stars
arXiv:2109.01222 · doi:10.1088/1475-7516/2022/01/041
Abstract
Diluted axion star, a self-gravitating object with the quantum pressure balancing gravity, has been predicted in many models with a QCD axion or axion-like particle. It can be formed in the early universe and composes a sizable fraction of dark matter. One could detect the transient radio signals when it passes by a magnetar with the axion particle converted into photon in the magnetic field. Using both numerical and semi-analytic approaches, we simulate the axion star's dynamic evolution and estimate the fraction of axion particles that can have a resonance conversion during such a collision event. We have found that both self-gravity and quantum pressure are not important after the diluted axion star enters the Roche radius. A free-fall approximate can capture individual particle trajectories very well. With some optimistic cosmological and astrophysical assumptions, the QCD axion parameter space can be probed from detecting such a collision event by radio telescopes.
arXiv comment28 pages, 11 figures
References in corpus (66)
- A Universal Density Profile from Hierarchical Clustering
- Axion Cosmology
- A bright millisecond radio burst of extragalactic origin
- String Axiverse
- Ultralight scalars as cosmological dark matter
- Axions In String Theory
- The Structure of Dark Matter Haloes in Dwarf Galaxies
- Cosmic Structure as the Quantum Interference of a Coherent Dark Wave
- Birth and Evolution of Isolated Radio Pulsars
- The Parkes multibeam pulsar survey: VI. Discovery and timing of 142 pulsars and a Galactic population analysis
- Understanding the Core-Halo Relation of Quantum Wave Dark Matter, DM, from 3D Simulations
- Mass-radius relation of Newtonian self-gravitating Bose-Einstein condensates with short-range interactions: I. Analytical results
- The Expanded Very Large Array -- a New Telescope for New Science
- A Revised Experimental Upper Limit on the Electric Dipole Moment of the Neutron
- Simulating cosmic structure formation with the GADGET-4 code
- Reduced Limit on the Permanent Electric Dipole Moment of Hg
- Formation of Solitonic Stars Through Gravitational Cooling
- Galaxy Formation with BECDM: I. Turbulence and relaxation of idealised haloes
- Simulations of solitonic core mergers in ultra-light axion dark matter cosmologies
- Mass-radius relation of Newtonian self-gravitating Bose-Einstein condensates with short-range interactions: II. Numerical results
- Axion dark matter, solitons, and the cusp-core problem
- Do Dark Matter Axions Form a Condensate with Long-Range Correlation?
- Gravitational Bose-Einstein condensation in the kinetic regime
- Formation and structure of ultralight bosonic dark matter halos
- The long bar as seen by the VVV survey: I. Colour-magnitude diagrams
- Dilute and dense axion stars
- Stellar mass map and dark matter distribution in M31
- Evolution of the Schrödinger--Newton system for a self--gravitating scalar field
- Radio Signals from Axion Dark Matter Conversion in Neutron Star Magnetospheres
- High-Resolution Simulation on Structure Formation with Extremely Light Bosonic Dark Matter
- Dense Axion Stars
- Lyman- forest and non-linear structure characterization in Fuzzy Dark Matter cosmologies
- Formation and mass growth of axion stars in axion miniclusters
- Structure formation in large-volume cosmological simulations of fuzzy dark matter: Impact of the non-linear dynamics
- The radio telescope search for the resonant conversion of cold dark matter axions from the magnetized astrophysical sources
- New insights into the formation and growth of boson stars in dark matter halos
- Detecting Axion Dark Matter with Radio Lines from Neutron Star Populations
- PsrPopPy: An open-source package for pulsar population simulations
- Anticipated Performance of the Square Kilometre Array -- Phase 1 (SKA1)
- Cosmological particle-in-cell simulations with ultralight axion dark matter
- Self-gravitating system made of axions
- Observations of the Sagittarius Dwarf galaxy by the H.E.S.S. experiment and search for a Dark Matter signal
- Numerical solution of the non-linear Schrodinger equation using smoothed-particle hydrodynamics
- AX-GADGET: a new code for cosmological simulations of Fuzzy Dark Matter and Axion models
- First Simulations of Axion Minicluster Halos
- Dark matter axion detection in the radio/mm-waveband
- Tidal disruption of fuzzy dark matter subhalo cores
- Numerical and Perturbative Computations of the Fuzzy Dark Matter Model
- Rotating Drops of Axion Dark Matter
- Fast radio bursts from axion stars moving through pulsar magnetospheres
- Tidal streams from axion miniclusters and direct axion searches
- Axion-photon conversion in strongly magnetised plasmas
- Transient Radio Signatures from Neutron Star Encounters with QCD Axion Miniclusters
- Stellar Disruption of Axion Miniclusters in the Milky Way
- Radio Line Properties of Axion Dark Matter Conversion in Neutron Stars
- Axion star collisions with Neutron stars and Fast Radio Bursts
- Detecting Axion Stars with Radio Telescopes
- Destruction of axion miniclusters in the Galaxy
- Magnetars and Axion-like Particles: Probes with the Hard X-ray Spectrum
- Dipole Radiation and Beyond from Axion Stars in Electromagnetic Fields
- Can the dark matter halo be a collisionless ensemble of axion stars?
- Resonant Conversion of Dark Matter Oscillons in Pulsar Magnetospheres
- Axion configurations around pulsars
- A Stable Finite-Volume Method for Scalar-Field Dark Matter
- Fast Radio Bursts from Axion Stars
- FRBs and dark matter axions