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Statistical properties of fast radio bursts elucidate their origins:magnetars are favored over gamma-ray bursts

Research in Astronomy and Astrophysics 2021年第8期21卷 285-292页

作者： Xiang-Han Cui Cheng-Min Zhang Shuang-Qiang Wang Jian-Wei Zhang Di Li Bo Peng Wei-Wei Zhu Richard Strom Na Wang Qingdong Wu Chang-Qing Ye De-Hua Wang Yi-Yan Yang Zhen-Qi Diao CAS Key Laboratory of fast National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China Department of Astronomy Beijing Normal UniversityBeijing 100875China NAOC-UKZN Computational Astrophysics Centre University of KwaZulu-NatalDurban 4000South Africa Key Laboratory of radio Astronomy Chinese Academy of SciencesBeijing 100101China Netherlands Institute for radio Astronomy(ASTRON) Postbus 27990 AA Dwingeloothe Netherlands Astronomical Institute ‘Anton Pannekoek’ Faculty of Science University of Amsterdam1090 GE Amsterdamthe Netherlands TianQin Research Center for Gravitational Physics Sun Yat-sen UniversityZhuhai 519082China School of Physics and Electronic Sciences Guizhou Education UniversityGuiyang 550018China

fast radio bursts(FRBs) are extremely strong radio flares lasting several milliseconds,most of which come from unidentified objects at a cosmological *** can be apparently repeating or *** this paper,we analyzed 18 repeaters and 12 non-repeating FRBs observed in the frequency bands of 400–800 MHz from Canadian Hydrogen Intensity Mapping Experiment(CHIME).We investigated the distributions of FRB isotropic-equivalent radio luminosity,considering the K ***,the luminosity distribution can be better fitted by Gaussian form than by *** on the above results,together with the observed FRB event rate,pulse duration,and radio luminosity,FRB origin models are evaluated and constrained such that the gamma-ray bursts(GRBs) may be excluded for the non-repeaters while magnetars or neutron stars(NSs) emitting the supergiant pulses are preferred for the *** also found the necessity of a small FRB emission beaming solid angle(about 0.1 sr) from magnetars that should be considered,and/or the FRB association with soft gamma-ray repeaters(SGRs) may lie at a low probability of about 10%.Finally,we discussed the uncertainty of FRB luminosity caused by the estimation of the distance that is inferred by the simple relation between the redshift and dispersion measure(DM).

关键词： transients:fast radio bursts methods:statistical stars:magnetars

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