Electromagnetic Bursts from Mergers of Oscillons in Axion-like Fields

Abstract

We investigate the bursts of electromagnetic and scalar radiation resulting from the collision, and merger of oscillons made from axion-like particles using 3+1 dimensional lattice simulations of the coupled axion-gauge field system. The radiation into photons is suppressed before the merger. However, it becomes the dominant source of energy loss after the merger if a resonance condition is satisfied. Conversely, the radiation in scalar waves is dominant during initial merger phase but suppressed after the merger. The backreaction of scalar and electromagnetic radiation is included in our simulations. We evolve the system long enough to see that the resonant photon production extracts a significant fraction of the initial axion energy, and again falls out of the resonance condition. We provide a parametric understanding of the time, and energy scales involved in the process and discuss observational prospects of detecting the electromagnetic signal.

21 pages, 6 figures + 4 pages of Appendix (v2, updated references and minor changes in text)

References in corpus (25)

• Cosmic Structure as the Quantum Interference of a Coherent Dark Wave
• Monodromy in the CMB: Gravity Waves and String Inflation
• Fast Radio Bursts
• Nonperturbative Dynamics Of Reheating After Inflation: A Review
• The Powers of Monodromy
• Dilute and dense axion stars
• Natural inflation with multiple sub-Planckian axions
• Quantum Radiation of Oscillons
• The photo-philic QCD axion
• Flat-top oscillons in an expanding universe
• Inflaton Fragmentation and Oscillon Formation in Three Dimensions
• Fast Radio Bursts and Axion Miniclusters
• Axion Stars and Fast Radio Bursts
• Radio-emission of axion stars
• Generation of Coherent Structures After Cosmic Inflation
• Fast radio bursts from axion stars moving through pulsar magnetospheres
• Lighting the Dark: The Evolution of the Post-Inflationary Universe
• Relaxation times for Bose-Einstein condensation in axion miniclusters
• Axions and Axion-Like Particles
• Inflaton fragmentation: Emergence of pseudo-stable inflaton lumps (oscillons) after inflation
• Imprints of Axion Superradiance in the CMB
• Cosmological Tension of Ultralight Axion Dark Matter and its Solutions
• A First Transients Survey with JWST: the FLARE project
• Non-Relativistic Formation of Scalar Clumps as a Candidate for Dark Matter
• Ultra-relativistic oscillon collisions

Cited by in corpus (27)

• Wave Dark Matter
• New Horizons for Fundamental Physics with LISA
• Recent Progress in the Physics of Axions and Axion-Like Particles
• Instability of rotating Bose stars
• Polarized Vector Oscillons
• The Structure of the Oscillon: The Dynamics of Attractive Self-Interaction
• Beyond Schrödinger-Poisson: Nonrelativistic Effective Field Theory for Scalar Dark Matter
• Axion Star Explosions: A New Source for Axion Indirect Detection
• Dipole Radiation and Beyond from Axion Stars in Electromagnetic Fields
• Gravitational effects on oscillon lifetimes
• The Gravitational Afterglow of Boson Stars
• Two-Scalar Bose-Einstein Condensates: From Stars to Galaxies
• Yang-Mills stars in Higgsed non-Abelian dark matter
• Photons from dark photon solitons via parametric resonance
• Constraining axion and compact dark matter with interstellar medium heating
• Nonperturbative structure in coupled axion sectors and implications for direct detection
• Non-topological solitons and quasi-solitons
• Global View of Axion Stars with (Nearly) Planck-Scale Decay Constants
• Axion star condensation around primordial black holes and microlensing limits
• Propagation effects in the FRB 20121102A spectra
• Optical Lensing by Axion Stars: Observational Prospects with Radio Astrometry
• Multimessenger signals from compact axion star mergers
• Dark photon dark matter from flattened axion potentials
• Unified study of $B_s^0\to X(3872){\pi }^{+}{\pi }^{-}(K^{+}{K}^{-})$ and $B_s^0\to \psi (2S){\pi }^{+}{\pi }^{-}(K^{+}{K}^{-})$ processes
• Constraining the inflaton potential with gravitational waves from oscillons
• Detecting the $\pi$-axiverse through parametric resonance
• Polarized solitons in higher-spin wave dark matter