Coherent emission in pulsars, magnetars and Fast Radio Bursts: reconnection-driven free electron laser
arXiv:2102.07010 · doi:10.3847/1538-4357/ac1b32
Abstract
We develop a model of the generation of coherent radio emission in the Crab pulsar, magnetars and Fast Radio Bursts (FRBs). Emission is produced by a reconnection-generated beam of particles via a variant of Free Electron Laser (FEL) mechanism, operating in a weakly-turbulent, guide-field dominated plasma. We first consider nonlinear Thomson scattering in a guide-field dominated regime, and apply to model to explain emission bands observed in Crab pulsar and in Fast Radio Bursts. We consider particle motion in a combined fields of the electromagnetic wave and thee lectromagnetic (Alfvenic) wiggler. Charge bunches, created via a ponderomotive force, Compton/Raman scatter the wiggler field coherently. The model is both robust to the underlying plasma parameters and succeeds in reproducing a number of subtle observed features: (i) emission frequencies depend mostly on the length of turbulence and the Lorentz factor of the reconnection generated beam, - it is independent of the absolute value of the underlying magnetic field. (ii) The model explains both broadband emission and the presence of emission stripes, including multiple stripes observed in the High Frequency Interpulse of the Crab pulsar. (iii) The model reproduces correlated polarization properties: presence of narrow emission bands in the spectrum favors linear polarization, while broadband emission can have arbitrary polarization. (iv) The mechanism is robust to the momentum spread of the particle in the beam. We also discuss a model of wigglers as non-linear force-free Alfven solitons (light darts).
References in corpus (78)
- A bright millisecond radio burst of extragalactic origin
- Nonlinear collective effects in photon-photon and photon-plasma interactions
- A fast radio burst associated with a Galactic magnetar
- A bright millisecond-duration radio burst from a Galactic magnetar
- Relativistic Reconnection: an Efficient Source of Non-Thermal Particles
- Electrodynamics of Magnetars: Implications for the Persistent X-ray Emission and Spindown of the Soft Gamma Repeaters and Anomalous X-ray Pulsars
- Fast Radio Bursts
- Gamma-Ray Observations of a Giant Flare from The Magnetar SGR 1806-20
- Fast Radio Bursts: An Extragalactic Enigma
- Transient pulsed radio emission from a magnetar
- CHIME/FRB Detection of Eight New Repeating Fast Radio Burst Sources
- Periodic activity from a fast radio burst source
- Corona of Magnetars
- INTEGRAL discovery of a burst with associated radio emission from the magnetar SGR 1935+2154
- FRB 121102 Bursts Show Complex Time-Frequency Structure
- Supergiant Pulses from Extragalactic Neutron Stars
- A Second Source of Repeating Fast Radio Bursts
- Explosive reconnection in magnetars
- Modeling of Gamma-Ray Pulsar Light Curves with Force-Free Magnetic Field
- On the relativistic magnetic reconnection
- Radio Emission Signatures in the Crab Pulsar
- A peculiar hard X-ray counterpart of a Galactic fast radio burst
- Particle Acceleration and Magnetic Dissipation in Relativistic Current Sheet of Pair Plasmas
- Coherent Emission Mechanisms in Astrophysical Plasmas
- Time-dependent pair cascades in magnetospheres of neutron stars I. Dynamics of the polar cap cascade with no particle supply from the neutron star surface
- Modeling high-energy pulsar lightcurves from first principles
- Plasmoids in relativistic reconnection, from birth to adulthood: first they grow, then they go
- LOFAR Detection of 110-188 MHz Emission and Frequency-Dependent Activity from FRB 20180916B
- Particle acceleration in axisymmetric pulsar current sheets
- Magnetar giant flares and afterglows as relativistic magnetized explosions
- Electrodynamics of axisymmetric pulsar magnetosphere with electron-positron discharge: a numerical experiment
- On the Properties of Time-Dependent, Force-Free, Degenerate Electrodynamics
- Resonant Cyclotron Scattering and Comptonization in Neutron Star Magnetospheres
- Pair-production multiplicities in rotation-powered pulsars
- Pulsar Wind Nebulae as Cosmic Pevatrons: A Current Sheet's Tale
- Spacetime approach to force-free magnetospheres
- Multifrequency Radio Observations of the Crab Pulsar
- Fast radio bursts from reconnection in magnetar magnetosphere
- Dynamics of relativistic reconnection
- Non-Cosmological FRBs from Young Supernova Remnant Pulsars
- Fast radio bursts as giant pulses from young rapidly rotating pulsars
- The Role of the Guide Field in Relativistic Pair Plasma Reconnection
- Magnetic Reconnection in Extreme Astrophysical Environments
- CHIME/FRB Detection of the Original Repeating Fast Radio Burst Source FRB 121102
- Giant Pulses from the Millisecond Pulsar B1821-24
- Physical Conditions in the Reconnection Layer in Pulsar Magnetospheres
- Nonthermal Particle Acceleration in 3D Relativistic Magnetic Reconnection in Pair Plasma
- Giant Pulses from PSR B1937+21 with widths <= 15 nanoseconds and T_b >= 5 x 10^39 K, the Highest Brightness Temperature Observed in the Universe
- Giant Pulses from PSR B0540-69 in the Large Magellanic Cloud
- FRB-periodicity: mild pulsars in tight O/B-star binaries
- On the Nature of Pulsar Radio Emission
- Pulsar Radio Emission Mechanism: Radio Nanoshots as a Low Frequency Afterglow of Relativistic Magnetic Reconnection
- Tearing instability in relativistic magnetically dominated plasmas
- Electrodynamics of pulsar magnetospheres
- Large-Amplitude, Pair-Creating Oscillations in Pulsar and Black Hole Magnetospheres
- The Crab Pulsar at Centimeter Wavelengths II: Single Pulses
- Radio Emission from Magnetars
- Radio pulsars: already fifty years!
- Radio Emission Physics in the Crab Pulsar
- A Giant Sample of Giant Pulses from the Crab Pulsar
- Polarimetric Properties of the Crab Pulsar between 1.4 and 8.4 GHz
- Radio emission from the Crab and Crab-like pulsars
- Electromagnetic power of merging and collapsing compact objects
- Fast Radio Bursts' emission mechanism: implication from localization
- On the dynamics of mechanical failures in magnetized neutron-star crusts
- On generation of Crab giant pulses
- Radius-to-frequency mapping and FRB frequency drifts
- Particle acceleration in explosive relativistic reconnection events and Crab Nebula gamma-ray flares
- Particle acceleration in explosive relativistic reconnection events and Crab Nebula gamma-ray flares
- Particle acceleration in relativistic magnetic flux-merging events
- Magnetar activity mediated by plastic deformations of neutron star crust
- Giant pulses of pulsar radio emission
- How else can we detect Fast Radio Bursts?
- Explosive X-point collapse in relativistic magnetically-dominated plasma
- The Equatorial Current Sheet and other interesting features of the Pulsar Magnetosphere
- Nonlinear optics in strongly magnetized pair plasma, with applications to FRBs
- Nonaxisymmetric Poynting Jets
- A ring-of-fire in the pulsar magnetosphere
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- The Physics of Fast Radio Bursts
- Coherent inverse Compton scattering by bunches in fast radio bursts
- The Large Dispersion and Scattering of FRB 20190520B are Dominated by the Host Galaxy
- A burst storm from the repeating FRB 20200120E in an M81 globular cluster
- Burst timescales and luminosities link young pulsars and fast radio bursts
- Resolving the Emission Regions of the Crab Pulsar's Giant Pulses II. Evidence for Relativistic Motion
- Fast radio bursts by high-frequency synchrotron maser emission generated at the reverse shock of a powerful magnetar flare
- Radiation reaction cooling as a source of anisotropic momentum distributions with inverted populations
- Faraday conversion in pair-symmetric winds of magnetars and Fast Radio Bursts
- A Toy Model for the Time-Frequency Structure of Fast Radio Bursts: Implications for the CHIME Burst Dichotomy
- Fast radio bursts at the dawn of the 2020s
- Radio Emission of Pulsars. II. Coherence Catalyzed by Cerenkov-Unstable Shear Alfvén Waves
- Fast Radio Bursts
- The Moving Mirror model for Fast Radio Bursts
- Escape of Fast Radio Bursts from magnetars' magnetospheres
- Bunch Expansion as a cause for Pulsar Radio Emissions
- Faraday rotation in fast radio bursts
- Angled pulsar magnetospheres