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

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

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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 com-mon 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 dis-tinctions among diverse physical processes.

Fast radio burstEarthquakeStochasticChaos

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

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National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China

Key Laboratory of Radio Astronomy and Technolgoy,Chinese Academy of Sciences,Beijing 100101,China

University of Chinese Academy of Sciences,Beijing 100049,China

Research Center for Astronomical Computing,Zhejiang Laboratory,Hangzhou 311100,China

New Cornerstone Science Laboratory,Shenzhen 518054,China

Institute for Frontiers in Astronomy and Astrophysics,Beijing Normal University,Beijing 102206,China

Institute of Astrophysics,Central China Normal University,Wuhan 430079,China

School of Science,Western Sydney University,Penrith NSW2751,Australia

Xinjiang Astronomical Observatory,Chinese Academy of Sciences,Urumqi 830011,China

Key Laboratory of Radio Astronomy,Chinese Academy of Sciences,Urumqi 830011,China

Xinjiang Key Laboratory of Radio Astrophysics,Urumqi 830011,China

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National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)Key Research Project of Zhejiang LabNew Cornerstone InvestigatorNSFCYouth Innovation Promotion Association CASCultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS.Chen-Hui Niu is supported by NSFCNational SKA Program of ChinaOffice Leading Group for Cyberspace Affairs,CASrecipient of an Australian Research Council Discovery Early Career AwardAustralian GovernmentNational Science Foundation of Xinjiang Uygur Autonomous RegionMajor Science and Technology Program of Xinjiang Uygur Autonomous RegionTianchi Talent project,and the CAS Project for Young Scientists in Basic Research

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2024

10.1016/j.scib.2024.02.010

科学通报(英文版)
中国科学院

科学通报(英文版)

CSTPCD
ISSN：1001-6538
年,卷(期)：2024.69(8)
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