Radiation Reaction effects on Coherent Emission in Relativistic Magnetized Shocks
arXiv:2502.14550 · doi:10.1103/49dm-cfgp
Abstract
Relativistic magnetized shocks are natural sources of coherent radiation, representing a promising framework for fast radio bursts (FRBs). This study explores how the radiation reaction (RR) effect, triggered by high-energy photon emissions during shock radiation, significantly alters particle dynamics and coherent radiation properties. Using kinetic particle simulations, we demonstrate that RR severely suppresses electron energies from shock acceleration, resulting in multiple coherent gyration cycles at the shock front. It amplifies the intensity of coherent radiation and boosts energy efficiency by several fold, as compared to the single gyration cycle in the standard model of relativistic magnetized shocks. We further find that the coherent radiation spectrum from RR-mediated shocks is characterized by upshift peak frequency, broaden bandwidth, and narrow spectral peak. These RR-induced radiation changes may be related with several observed FRB phenomena, including the statistically positive correlation between luminosity and bandwidth in repeating and one-off FRBs, the narrow spectra seen in some FRB events, and the bimodal energy distribution reported in FRB 20121102A.
arXiv comment6 pages, 4 figures
References in corpus (42)
- Extremely high-intensity laser interactions with fundamental quantum systems
- A fast radio burst associated with a Galactic magnetar
- A bright millisecond-duration radio burst from a Galactic magnetar
- Fast Radio Bursts
- SMILEI: a collaborative, open-source, multi-purpose particle-in-cell code for plasma simulation
- Particle acceleration in relativistic collisionless shocks: Fermi process at last?
- Fast Radio Bursts: An Extragalactic Enigma
- A model for fast extragalactic radio bursts
- A Living Theory Catalogue for Fast Radio Bursts
- Experimental evidence of radiation reaction in the collision of a high-intensity laser pulse with a laser-wakefield accelerated electron beam
- Charged particle motion and radiation in strong electromagnetic fields
- A fast radio burst localised to a massive galaxy
- The Physical Mechanisms of Fast Radio Bursts
- A flaring magnetar in FRB 121102?
- A bimodal burst energy distribution of a repeating fast radio burst source
- Blast Waves from Magnetar Flares and Fast Radio Bursts
- A Multi-telescope Campaign on FRB 121102: Implications for the FRB Population
- Bunching Coherent Curvature Radiation in Three-Dimensional Magnetic Field Geometry: Application to Pulsars and Fast Radio Bursts
- FRB Energetics and detectability from high redshifts
- On the radiation mechanism of repeating fast radio bursts
- The synchrotron maser emission from relativistic shocks in Fast Radio Bursts: 1D PIC simulations of cold pair plasmas
- On the origin of fast radio bursts (FRBs)
- FRB Coherent Emission from Decay of Alfven Waves
- Fast Radio Bursts
- FAST observations of an extremely active episode of FRB 20201124A: I. Burst morphology
- Classical Radiation Reaction in Particle-In-Cell Simulations
- Coherent Electromagnetic Emission from Relativistic Magnetized Shocks
- Fast Radio Bursts
- Pair separation in parallel electric field in magnetar magnetosphere and narrow spectra of fast radio bursts
- Perpendicular relativistic shocks in magnetized pair plasma
- Persistence of precursor waves in two-dimensional relativistic shocks
- Precursor Wave Emission Enhanced by Weibel Instability in Relativistic Shocks
- Can a Single Population Account for the Discriminant Properties in Fast Radio Bursts?
- Precursor Wave Amplification by Ion-Electron Coupling through Wakefield in Relativistic Shocks
- Fast radio bursts as strong waves interacting with ambient medium
- Fast radio bursts as precursor radio emission from monster shocks
- Linearly-polarized Coherent Emission from Relativistic Magnetized Ion-electron Shocks
- Radiation reaction cooling as a source of anisotropic momentum distributions with inverted populations
- One-off and Repeating Fast Radio Bursts: A Statistical Analysis
- Ring momentum distributions as a general feature of Vlasov dynamics in the synchrotron dominated regime
- Relativistically Magnetized Collisionless Shocks in Pair Plasma: I. Solitons, Chaos, and Thermalization
- Radiative cooling induced coherent maser emission in relativistic plasmas