Statistical properties magnetar bursts and FRB 121102

Abstract

In this paper, we present statistics of soft gamma repeater (SGR) bursts from SGR J1550-5418, SGR 1806-20 and SGR 1900+14 by adding new bursts from Kırmızıbayrak et al. (2017) detected with the Rossi X-ray Timing Explorer (RXTE). We find that the fluence distributions of magnetar bursts are well described by power-law functions with indices 1.84, 1.68, and 1.65 for SGR J1550-5418, SGR 1806-20 and SGR 1900+14, respectively. The duration distributions of magnetar bursts also show power-law forms. Meanwhile, the waiting time distribution can be described by a non-stationary Poisson process with an exponentially growing occurrence rate. These distributive features indicate that magnetar bursts can be regarded as a self-organizing critical process. We also compare these distributions with the repeating FRB 121102. The statistical properties of repeating FRB 121102 are similar with magentar bursts, combing with the large required magnetic filed ($B\ge 10^{14}$G) of neutron star for FRB 121102, which indicates that the central engine of FRB 121102 may be a magnetar.

9 pages, 5 figures, 2 tables, accepted for publication in MNRAS

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• Repeating fast radio bursts reveal memory from minutes to an hour
• Scale-invariance in the repeating fast radio burst 121102
• 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
• Possible periodic activity in the short bursts of SGR 1806-20: connection to fast radio bursts
• Evidence for self-organized criticality phenomena in prompt phase of short gamma-ray bursts
• Statistical Properties of X-Ray Bursts from SGR J1935+2154 Detected by Insight-HXMT
• Tidal capture of an asteroid by a magnetar: FRB-like bursts, glitch and anti-glitch
• Observational effects of banded repeating FRBs
• Similar Scale-invariant Behaviors between Soft Gamma-ray Repeaters and An Extreme Epoch from FRB 121102
• A comparison between repeating bursts of FRB 121102 and giant pulses from Crab pulsar and its applications
• Energy and waiting time distributions of FRB 121102 observed by FAST