Double-peaked Pulse Profile of FRB 200428: Synchrotron Maser Emission from Magnetized Shocks Encountering a Density Jump
arXiv:2010.14787 · doi:10.3847/2041-8213/abc551
Abstract
Very recently a fast radio burst (FRB) 200428 associated with a strong X-ray burst from the Galactic magnetar SGR 1935+2154 has been detected, which is direct evidence supporting the magnetar progenitor models of FRBs. Assuming the FRB radiation mechanism is synchrotron maser emission from magnetized shocks, we develop a specific scenario by introducing a density jump structure of upstream medium, and thus the double-peaked character of FRB 200428 is a natural outcome. The luminosity and emission frequency of two pulses can be well explained in this scenario. Furthermore, we find that the synchrotron emission of shock-accelerated electrons is in the X-ray band, which therefore can be responsible for at least a portion of observed X-ray fluence. With proper upgrade, this density jump scenario can be potentially applied to FRBs with multiple peaks in the future.
arXiv comment6 pages, 2 figures
References in corpus (46)
- A bright millisecond radio burst of extragalactic origin
- A fast radio burst associated with a Galactic magnetar
- A bright millisecond-duration radio burst from a Galactic magnetar
- The Host Galaxy and Redshift of the Repeating Fast Radio Burst FRB 121102
- A census of baryons in the Universe from localized fast radio bursts
- Fast Radio Bursts
- Fast Radio Bursts: An Extragalactic Enigma
- FRBCAT: The Fast Radio Burst Catalogue
- A model for fast extragalactic radio bursts
- A Living Theory Catalogue for Fast Radio Bursts
- Fast radio bursts as synchrotron maser emission from decelerating relativistic blast waves
- A repeating fast radio burst source localised to a nearby spiral galaxy
- A single fast radio burst localized to a massive galaxy at cosmological distance
- CHIME/FRB Detection of Eight New Repeating Fast Radio Burst Sources
- Periodic activity from a fast radio burst source
- INTEGRAL discovery of a burst with associated radio emission from the magnetar SGR 1935+2154
- Hydrodynamic Time Scales and Temporal Structure of GRBs
- A fast radio burst localised to a massive galaxy
- A flaring magnetar in FRB 121102?
- A Second Source of Repeating Fast Radio Bursts
- The low density and magnetization of a massive galaxy halo exposed by a fast radio burst
- Possible periodic activity in the repeating FRB 121102
- A Burst in a Wind Bubble and the Impact on Baryonic Ejecta: High-Energy Gamma-Ray Flashes and Afterglows from Fast Radio Bursts and Pulsar-Driven Supernova Remnants
- Nine New Repeating Fast Radio Burst Sources from CHIME/FRB
- Blast Waves from Magnetar Flares and Fast Radio Bursts
- Coherent Emission Mechanisms in Astrophysical Plasmas
- Gamma-ray bursts with continuous energy injection and their afterglow signature
- The discovery, monitoring and environment of SGR J1935+2154
- Implications of a "Fast Radio Burst" from a Galactic Magnetar
- High time resolution and polarisation properties of ASKAP-localised fast radio bursts
- The synchrotron maser emission from relativistic shocks in Fast Radio Bursts: 1D PIC simulations of cold pair plasmas
- Heating and Non-thermal Particle Acceleration in Relativistic, Transverse Magnetosonic Shock Waves in Proton-Electron-Positron Plasmas
- On the origin of fast radio bursts (FRBs)
- Winds from massive stars: implications for the afterglows of gamma-ray bursts
- Fast Radio Bursts
- Signatures of a Maxwellian Component in Shock-Accelerated Electrons in GRBs
- Hydrodynamics of Relativistic Blast Waves in a Density-Jump Medium and Their Emission Signature
- A Re-brightening of the Radio Nebula associated with the 2004 December 27 giant flare from SGR 1806--20
- Radio continuum and polarization study of SNR G57.2+0.8 associated with magnetar SGR1935+2154
- Fast Radio Bursts
- Pair separation in parallel electric field in magnetar magnetosphere and narrow spectra of fast radio bursts
- On the Distance of SGR 1935+2154 Associated with FRB 200428 and Hosted in SNR G57.2+0.8
- Induced scattering of short radio pulses
- A Magnetar-Asteroid Impact Model for FRB 200428 Associated with an X-ray Burst from SGR 1935+2154
- On the magnetospheric origin of Repeating Fast Radio Bursts
- FRB 200428: an Impact between an Asteroid and a Magnetar
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- The Physics of Fast Radio Bursts
- Periodic Activities of Repeating Fast Radio Bursts from Be/X-ray Binary Systems
- Reanalysis of the X-ray burst associated FRB 200428 with Insight-HXMT observations
- New Insights into the Criteria of Fast Radio Burst in the Light of FRB 20121102A
- Repeating Fast Radio Bursts with High Burst Rates by Plate Collisions in Neutron Star Crusts
- The Statistical Similarity of Repeating and Non-Repeating Fast Radio Bursts
- An Intermediate-field Fast Radio Burst Model and the Quasi-periodic Oscillation
- Hints of a universal width-energy relation for classified fast radio bursts
- Unveil A Peculiar Light Curve Pattern of Magnetar Burst with GECAM observations of SGR J1935+2154
- Fast Radio Bursts
- The Impact of Accretion on FRB Radiation Mechanisms in Binary Systems: Constraints and Implications
- Do the periodic activities of repeating fast radio bursts represent the spins of neutron stars?