Repeating fast radio bursts reveal memory from minutes to an hour

Abstract

Fast radio bursts (FRBs) are brief, luminous pulses with unknown physical origin. The repetition pattern of FRBs contains essential information about their physical nature and emission mechanisms. Using the two largest samples of FRB 20121102A and FRB 20201124, we report that the sources of the two FRBs reveal memory over a large range of timescales, from a few minutes to about an hour. The memory is detected from the coherent growths in burst-rate structures and the Hurst exponent. The waiting time distribution displays a power-law tail, which is consistent with a Poisson model with a time-varying rate. From cellular automaton simulations, we find that these characteristics can be well understood within the physical framework of a self-organized criticality system driven in a correlation way, such as random walk functions. These properties indicate that the triggers of bursts are correlated, preferring the crustal failure mechanism of neutron stars.

16 pages, 6 figures, 3 tables, accepted for publication in ApJL

References in corpus (16)

• A bright millisecond radio burst of extragalactic origin
• The Physical Mechanisms of Fast Radio Bursts
• A bimodal burst energy distribution of a repeating fast radio burst source
• 25 Years of Self-Organized Criticality: Solar and Astrophysics
• A fast radio burst source at a complex magnetised site in a barred galaxy
• A sample of low energy bursts from FRB 121102
• The Physics of Fast Radio Bursts
• Repeating Fast Radio Bursts from Magnetars with Low Magnetospheric Twist
• Repeating fast radio burst 20201124A originates from a magnetar/Be star binary
• FAST observations of an extremely active episode of FRB 20201124A: I. Burst morphology
• A sudden period of high activity from repeating Fast Radio Burst 20201124A
• Arecibo observations of a burst storm from FRB 20121102A in 2016
• The FRB 20121102A November rain in 2018 observed with the Arecibo Telescope
• Statistical properties magnetar bursts and FRB 121102
• Mountain formation by repeated, inhomogeneous crustal failure in a neutron star
• Repeating Fast Radio Bursts with High Burst Rates by Plate Collisions in Neutron Star Crusts

Cited by in corpus (12)

• Fast radio bursts trigger aftershocks resembling earthquakes, but not solar flares
• The arrival time and energy of FRBs traverse the time-energy bivariate space like a Brownian motion
• Similarity to earthquakes again: periodic radio pulses of the magnetar SGR 1935+2154 are accompanied by aftershocks like fast radio bursts
• On the energy budget of starquake-induced repeating fast radio bursts
• Hyper-active repeating fast radio bursts from rotation modulated starquakes on magnetars
• Scaling and Universality in the Temporal Occurrence of Repeating FRBs
• Tidal capture of an asteroid by a magnetar: FRB-like bursts, glitch and anti-glitch
• Memory in the Burst Occurrence of Repeating FRBs
• Statistical Properties of X-Ray Bursts from SGR J1935+2154 Detected by Insight-HXMT
• Self-organized critical characteristics of teraelectronvolt photons from GRB 221009A
• Quantifying the randomness and scale invariance of the repeating fast radio bursts
• Hurst index of gamma-ray burst light curves and its statistical study