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

Yong-Kun Zhang ¹Di Li ²Yi Feng ³Pei Wang ⁴Chen-Hui Niu ⁵Shi Dai ⁶Ju-Mei Yao ⁷Chao-Wei Tsai⁸

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作者信息

1. 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
2. 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
3. Research Center for Astronomical Computing,Zhejiang Laboratory,Hangzhou 311100,China
4. National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;Key Laboratory of Radio Astronomy and Technolgoy,Chinese Academy of Sciences,Beijing 100101,China;Institute for Frontiers in Astronomy and Astrophysics,Beijing Normal University,Beijing 102206,China
5. Institute of Astrophysics,Central China Normal University,Wuhan 430079,China
6. School of Science,Western Sydney University,Penrith NSW2751,Australia
7. 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
8. 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;Institute for Frontiers in Astronomy and Astrophysics,Beijing Normal University,Beijing 102206,China
折叠

Abstract

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.

Key words

Fast radio burst/Earthquake/Stochastic/Chaos

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基金项目

National Natural Science Foundation of China(NSFC)(11988101)

National Natural Science Foundation of China(NSFC)(11725313)

National Natural Science Foundation of China(NSFC)(11690024)

National Natural Science Foundation of China(NSFC)(12203045)

Key Research Project of Zhejiang Lab(2021PE0AC03)

New Cornerstone Investigator()

NSFC(fU2031117)

Youth Innovation Promotion Association CAS(ID.2021055)

Cultivation Project for FAST Scientific Payoff and Research Achievement of CAMS-CAS.Chen-Hui Niu is supported by NSFC(12203069)

National SKA Program of China(2022SKA0130100)

Office Leading Group for Cyberspace Affairs,CAS(CAS-WX2023PY-0102)

recipient of an Australian Research Council Discovery Early Career Award(DE210101738)

Australian Government()

National Science Foundation of Xinjiang Uygur Autonomous Region(2022D01D85)

Major Science and Technology Program of Xinjiang Uygur Autonomous Region(2022A03013-2)

Tianchi Talent project,and the CAS Project for Young Scientists in Basic Research(YSBR-063)

出版年

2024

科学通报(英文版)

中国科学院

科学通报(英文版)

CSTPCD

ISSN：1001-6538

参考文献量46

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