The arrival time and energy of FRBs traverse the time-energy bivariate space like a Brownian motion

Copyright © 2024 Science China Press. Published by Elsevier B.V. All rights reserved..

The origin of fast radio bursts (FRBs), the brightest cosmic explosion in radio bands, remains unknown. We introduce here a novel method for a comprehensive analysis of active FRBs' behaviors in the time-energy domain. Using "Pincus Index" and "Maximum Lyapunov Exponent", we were able to quantify the randomness and chaoticity, respectively, of the bursting events and put FRBs in the context of common transient physical phenomena, such as pulsar, earthquakes, and solar flares. In the bivariate time-energy domain, repeated FRB bursts' behaviors deviate significantly (more random, less chaotic) from pulsars, earthquakes, and solar flares. The waiting times between FRB bursts and the corresponding energy changes exhibit no correlation and remain unpredictable, suggesting that the emission of FRBs does not exhibit the time and energy clustering observed in seismic events. The pronounced stochasticity may arise from a singular source with high entropy or the combination of diverse emission mechanisms/sites. Consequently, our methodology serves as a pragmatic tool for illustrating the congruities and distinctions among diverse physical processes.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:69

Enthalten in:

Science bulletin - 69(2024), 8 vom: 30. Apr., Seite 1020-1026

Sprache:

Englisch

Beteiligte Personen:

Zhang, Yong-Kun [VerfasserIn]
Li, Di [VerfasserIn]
Feng, Yi [VerfasserIn]
Wang, Pei [VerfasserIn]
Niu, Chen-Hui [VerfasserIn]
Dai, Shi [VerfasserIn]
Yao, Ju-Mei [VerfasserIn]
Tsai, Chao-Wei [VerfasserIn]

Links:

Volltext

Themen:

Chaos
Earthquake
Fast radio burst
Journal Article
Stochastic

Anmerkungen:

Date Revised 15.04.2024

published: Print-Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.1016/j.scib.2024.02.010

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369432800