On the Jitter Radiation

Abstract

In a small scale turbulent medium, when the nonrelativistic Larmor radius $R_{\mathrm{L}}=m{c}^2/eB$ exceeds the correlation length $\lambda$ of the magnetic field, the magnetic bremsstrahlung of charged relativistic particles unavoidably proceeds in the so-called jitter radiation regime. The cooling timescale of parent particles is identical to the synchrotron cooling time, thus this radiation regime can be produced with very high efficiency in different astrophysical sources characterized by high turbulence. The jitter radiation has distinct spectral features shifted, compared to synchrotron radiation, towards high energies. This makes the jitter mechanism an attractive broad-band gamma-ray production channel which in highly magnetized and turbulent environments can compete or even dominate over other high energy radiation mechanisms. In this paper we present a novel study on spectral properties of the jitter radiation performed within the framework of perturbation theory. The derived general expression for the spectral power of radiation is presented in a compact and convenient for numerical calculations form.

17 pages, 6 figures, submitted to ApJ

References in corpus (5)

• Analytical solutions for energy spectra of electrons accelerated by nonrelativistic shock-waves in shell type supernova remnants
• Variable gamma-ray emission from the Crab Nebula: short flares and long "waves"
• Synchrotron emission in the fast cooling regime: which spectra can be explained?
• Diffusive Synchrotron Radiation from Pulsar Wind Nebulae
• Knot in Cen A: Stochastic Magnetic Field for Diffusive Synchrotron Radiation?

Cited by in corpus (33)

• A very-high-energy component deep in the Gamma-ray Burst afterglow
• Relativistic Shocks: Particle Acceleration and Magnetization
• Crab flares due to turbulent dissipation of the pulsar striped wind
• H.E.S.S. and Suzaku observations of the Vela X pulsar wind nebula
• Non-linear collisionless damping of Weibel turbulence in relativistic blast waves
• Application of Jitter Radiation: Gamma-ray Burst Prompt Polarization
• All-atom relativistic molecular dynamics simulations of channeling and radiation processes in oriented crystals
• Multi-wavelength Emission from Galactic Jets: the Case of the Microquasar SS433
• Violation of synchrotron line of death by the highly polarized $GRB160802A$
• Simulation of Channeling and Radiation of 855 MeV Electrons and Positrons in a Small-Amplitude Short-Period Bent Crystal
• Linear Polarization, Circular Polarization, and Depolarization of Gamma-ray Bursts: A Simple Case of Jitter Radiation
• Ultrahigh-energy Gamma-Ray Radiation from the Crab Pulsar Wind Nebula
• Detection of Small Flares from the Crab Nebula with Fermi-LAT
• Time Variability of Nonthermal X-ray Stripes in Tycho's Supernova Remnant with Chandra
• Extension of the synchrotron radiation of electrons to very high energies in clumpy environments
• Electron transport with re-acceleration and radiation in the jets of X-ray binaries
• Stochastic re-acceleration and magnetic-field damping in Tycho's supernova remnant
• Saturation of the asymmetric current filamentation instability under conditions relevant to relativistic shock precursors
• Exact analytical expression for the synchrotron radiation spectrum in the Gaussian turbulent magnetic field
• General properties of the radiation spectra from relativistic electrons moving in a Langmuir turbulence
• Polarization of radiation of electrons in highly turbulent magnetic fields
• The formation of hard VHE spectra from GRB afterglow via Two-Zone Synchrotron Self-Compton Emission
• Transport of and Radiation Production by Trans-relativistic/Non-relativistic Particles Moving Through Sub-Larmor-Scale Electromagnetic Turbulence
• The Crab nebula variability at short timescales with the Cherenkov Telescope Array
• Polarization radiation with turbulent magnetic fields from X-ray binaries
• The elusive synchrotron precursor of collisionless shocks
• Spectral Diversities of Gamma-ray Bursts in High Energy Bands: Hints from Turbulent Cascade
• Relativistic shock acceleration and some consequences
• Properties of magnetic turbulence in GRB afterglows
• Jitter Mechanism as a Kind of Coherent Radiation: Constrained by the GRB 221009A Emission at 18 TeV
• Theory of the Jitter radiation in a magnetized plasma accompanying temperature gradient
• Extreme Transients in Gamma Rays
• The Stochastic-Dissipative Störmer Problem-Trajectories and Radiation Patterns