The Moving Mirror model for Fast Radio Bursts
arXiv:2204.11663 · doi:10.1093/mnras/stac2087
Abstract
Recent observations of coherent radiation from the Crab pulsar (Bij et al 2021) suggest the emission is driven by an ultra - relativistic (), cold plasma flow. A relativistically expanding plasma shell can compress the ambient magnetic field, like a moving mirror, and thus produce coherent radiation whose wavelength is shorter than that of the ambient medium by . This mechanism has been studied in the past by Colgate and Noerdelinger (1971), in the context of radio loud supernova explosions. In this work we propose that a similar mechanism drives the coherent emission in fast radio bursts. The high Lorenz factors dramatically lower the implied energy and magnetic field requirements, allowing the spin down energy of regular (or even recycled), fast spinning pulsars, rather than slow spinning magnetars, to explain FRBs. We show that this model can explain the frequency and the time evolution of observed FRBs, as well as their duration, energetics and absence of panchromatic counterparts. We also predict that the peak frequency of sub pulses decline with observation time as . Unfortunately, with current capabilities it is not possible to constrain the shape of the curve . Finally, we find that a variation of this model can explain weaker radio transients, such as the one observed from a galactic magnetar. In this variant, the shock wave produces low frequency photons which are then Compton scattered to the GHz range.
References in corpus (32)
- A Population of Fast Radio Bursts at Cosmological Distances
- The direct localization of a fast radio burst and its host
- A fast radio burst associated with a Galactic magnetar
- A bright millisecond-duration radio burst from a Galactic magnetar
- A census of baryons in the Universe from localized fast radio bursts
- Dense magnetized plasma associated with a fast radio burst
- FRB 121102 Bursts Show Complex Time-Frequency Structure
- Fast radio burst source properties and curvature radiation model
- A repeating fast radio burst source in a globular cluster
- A concordance picture of FRB 121102 as a flaring magnetar embedded in a magnetized ion-electron wind nebula
- Characterizing the FRB host galaxy population and its connection to transients in the local and extragalactic Universe
- A unified model of the magnetar and radio pulsar bursting phenomenology
- On the radiation mechanism of repeating fast radio bursts
- Frequency-dependent polarization of repeating fast radio bursts-implications for their origin
- Simultaneous X-ray, gamma-ray, and Radio Observations of the repeating Fast Radio Burst FRB 121102
- FRB Coherent Emission from Decay of Alfven Waves
- Pulsar Radio Emission Mechanism: Radio Nanoshots as a Low Frequency Afterglow of Relativistic Magnetic Reconnection
- Large magnetic field variations towards the Galactic Centre magnetar, PSR J1745-2900
- Coherent emission in pulsars, magnetars and Fast Radio Bursts: reconnection-driven free electron laser
- Faraday depolarization and induced circular polarization by multi-path propagation with application to FRBs
- CRAFTS for Fast Radio Bursts Extending the dispersion-fluence relation with new FRBs detected by FAST
- What does FRB light-curve variability tell us about the emission mechanism?
- Cosmology with gravitationally lensed repeating Fast Radio Bursts
- Wave effects in the microlensing of pulsars and FRBs by point masses
- A Census of X-ray Millisecond Pulsars in Globular Clusters
- A Free-Electron Laser in the Pulsar Magnetosphere
- The nature of fast radio bursts
- On the weak magnetic field of millisecond pulsars: Does it decay before accretion?
- Kinematics of Crab Giant Pulses
- Constraining bright optical counterparts of Fast Radio Bursts
- Pulsar striped winds
- A Polarization Pipeline for Fast Radio Bursts Detected by CHIME/FRB