Confining Burst Energy Function and Spectral Fringe Pattern of FRB 20121102A with Multifrequency Observations

Abstract

The observed spectral shapes variation and tentative bimodal burst energy distribution (E-distribution) of fast radio burst (FRB) 20121102A with the FAST telescope are great puzzles. Adopting the published multifrequency data observed with the FAST and Arecibo telescopes at $L$ band and the GBT telescope at $C$ band, we investigate these puzzles through Monte Carlo simulations. The intrinsic energy function (E-function) is modeled as $dp/dE\propto E^{-{\alpha }_{\mathrm{E}}}$, and the spectral profile is described as a Gaussian function. A fringe pattern of its spectral peak frequency (${\nu }_{\mathrm{p}}$) in 0.5-8 GHz is inferred from the ${\nu }_{\mathrm{p}}$ distribution of the GBT sample. We estimate the likelihood of ${\alpha }_{\mathrm{E}}$ and the standard deviation of the spectral profile (${\sigma }_{\mathrm{s}}$) by utilizing the Kolmogorov--Smirnov (K-S) test probability for the observed and simulated specific E-distributions. Our simulations yields ${\alpha }_{\mathrm{E}}=1.82_{-0.30}^{+0.10}$ and ${\sigma }_{\mathrm{s}}=0.18_{-0.06}^{+0.28}$ ($3\sigma$ confidence level) with the FAST sample. These results suggest that a single power-law function is adequate to model the E-function of FRB 20121102A. The variations of its observed spectral indices and E-distributions with telescopes in different frequency ranges are due to both physical and observational reasons, i.e. narrow spectral width for a single burst and discrete ${\nu }_p$ fringe pattern in a broad frequency range among bursts, and the selection effects of the telescope bandpass and sensitivity. The putative ${\nu }_p$ fringe pattern cannot be explained with the current radiation physics models of FRBs. Some caveats of possible artificial effects that may introduce such a feature are discussed.

arXiv commentPublished in ApJ,13 pages, 5 figures

References in corpus (66)

• Planck 2015 results. XIII. Cosmological parameters
• A bright millisecond radio burst of extragalactic origin
• A Repeating Fast Radio Burst
• 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
• 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 Burst Discovered in the Arecibo Pulsar ALFA Survey
• An extreme magneto-ionic environment associated with the fast radio burst source FRB 121102
• Fast Radio Bursts: An Extragalactic Enigma
• The First CHIME/FRB Fast Radio Burst Catalog
• 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
• CHIME/FRB Detection of Eight New Repeating Fast Radio Burst Sources
• Highest-frequency detection of FRB 121102 at 4-8 GHz using the Breakthrough Listen Digital Backend at the Green Bank Telescope
• The Physical Mechanisms of Fast Radio Bursts
• The repeating Fast Radio Burst FRB 121102: Multi-wavelength observations and additional bursts
• A flaring magnetar in FRB 121102?
• A bimodal burst energy distribution of a repeating fast radio burst source
• 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
• A nearby repeating fast radio burst in the direction of M81
• Blast Waves from Magnetar Flares and Fast Radio Bursts
• Fast Radio Bursts from the Inspiral of Double Neutron Stars
• Fast Radio Burst 121102 Pulse Detection and Periodicity: A Machine Learning Approach
• A Multi-telescope Campaign on FRB 121102: Implications for the FRB Population
• Repeating behaviour of FRB 121102: periodicity, waiting times and energy distribution
• Bunching Coherent Curvature Radiation in Three-Dimensional Magnetic Field Geometry: Application to Pulsars and Fast Radio Bursts
• Repeating Fast Radio Bursts from Highly Magnetized Pulsars Travelling through Asteroid Belts
• A sample of low energy bursts from FRB 121102
• FRB Energetics and detectability from high redshifts
• Implications of a "Fast Radio Burst" from a Galactic Magnetar
• The Physics of Fast Radio Bursts
• Fast radio bursts from reconnection in magnetar magnetosphere
• Non-Cosmological FRBs from Young Supernova Remnant Pulsars
• Fast radio bursts as giant pulses from young rapidly rotating pulsars
• CHIME/FRB Detection of the Original Repeating Fast Radio Burst Source FRB 121102
• Chromatic periodic activity down to 120 MHz in a Fast Radio Burst
• A Binary Comb Model for Periodic Fast Radio Bursts
• The synchrotron maser emission from relativistic shocks in Fast Radio Bursts: 1D PIC simulations of cold pair plasmas
• Simultaneous X-ray, gamma-ray, and Radio Observations of the repeating Fast Radio Burst FRB 121102
• The spectral properties of the bright FRB population
• On the origin of fast radio bursts (FRBs)
• Limits on Fast Radio Bursts at 145 MHz with ARTEMIS, a real-time software backend
• Are all fast radio bursts repeating sources?
• Are there multiple populations of Fast Radio Bursts?
• Coherent inverse Compton scattering by bunches in fast radio bursts
• Repeating Fast Radio Bursts from Collapses of the Crust of a Strange Star
• A Neutron Star-White Dwarf Binary Model for Repeating Fast Radio Burst 121102
• Radio Emission Physics in the Crab Pulsar
• Are the distributions of Fast Radio Burst properties consistent with a cosmological population?
• Repeating fast radio bursts with WSRT/Apertif
• Arecibo observations of a burst storm from FRB 20121102A in 2016
• Simultaneous multi-telescope observations of FRB 121102
• Constraints on the low frequency spectrum of FRB 121102
• Can a Single Population Account for the Discriminant Properties in Fast Radio Bursts?
• Fast Radio Bursts From Primordial Black Hole Binaries Coalescence
• A Dual-band Radio Observation of FRB 121102 with the Deep Space Network and the Detection of Multiple Bursts
• On the true fractions of repeating and non-repeating FRB sources
• Fast radio bursts as strong waves interacting with ambient medium
• Long and Short Fast Radio Bursts are Different from Repeating and Non-repeating Transients
• Earth-mass primordial black hole mergers as sources for non-repeating FRBs

Cited by in corpus (1)

• Comparison of Burst Properties between FRB 20190520B and FRB 20121102A