Self-organized criticality in multi-pulse gamma-ray bursts
Self-organized criticality in multi-pulse gamma-ray bursts
复制标题
多脉冲伽马射线暴中的自组织临界性
DOI:
10.1007/s11467-020-0989-x
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发表时间:
2020-09
影响因子:
7.5
通讯作者:
Wu Xue-Feng
中科院分区:
文献类型:
--
作者:
Lyu Fen;Li Ya-Ping;Hou Shu-Jin;Wei Jun-Jie;Geng Jin-Jun;Wu Xue-Feng
The variability in multi-pulse gamma-ray bursts (GRBs) may help to reveal the mechanism of underlying processes from the central engine. To investigate whether the self-organized criticality (SOC) phenomena exist in the prompt phase of GRBs, we statistically study the properties of GRBs with more than 3 pulses in each burst by fitting the distributions of several observed physical variables with a Markov Chain Monte Carlo approach, including the isotropic energyEiso, the duration timeT, and the peak count ratePof each pulse. Our sample consists of 454 pulses in 93 GRBs observed by the CGRO/BATSE satellite. The best-fitting values and uncertainties for these power-law indices of the differential frequency distributions are: α E d = 1.54 ± 0.09 , α T d = 1.82 ± 0.15 + 0.14 a n d α P d = 2.09 − 019 + 0.18 , while the power-law indices in the cumulative frequency distributions are: α E c = 1.44 −s 0.10 + 0.08 , α T c = 1.75 − 0.13 + 0.141 a n d α P c = 1.99 − 019 + 0.16 . We find that these distributions are roughly consistent with the physical framework of a Fractal-Diffusive, Self-Organized Criticality (FD-SOC) system with the spatial dimensionS= 3 and the classical diffusionβ=1. Our results support that the jet responsible for the GRBs should be magnetically dominated and magnetic instabilities (e.g., kink model, or tearing-model instability) lead the GRB emission region into the SOC state.
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影响因子:
4.9
作者:
Meng Yan Zhi;Lu Liang Duan;Wei Jun Jie;Wu Xue Feng;Zhang Bin Bin
通讯作者:
Zhang Bin Bin
DOI:
10.1086/421285
发表时间:
2003-09
期刊:
The Astrophysical Journal
影响因子:
--
作者:
D. Yonetoku;T. Murakami;T. Nakamura;R. Yamazaki;A. Inoue;K. University;Kyoto University;O. Universit
通讯作者:
D. Yonetoku;T. Murakami;T. Nakamura;R. Yamazaki;A. Inoue;K. University;Kyoto University;O. Universit
DOI:
10.1007/s11433-014-5575-1
发表时间:
2014-09
期刊:
Science China Physics, Mechanics & Astronomy
影响因子:
--
作者:
Fen Lyu;YuanZhu Wang;Yunfeng Liang;Tingting Lin;Youdong Hu;Enwei Liang
通讯作者:
Fen Lyu;YuanZhu Wang;Yunfeng Liang;Tingting Lin;Youdong Hu;Enwei Liang
DOI:
10.1086/307790
发表时间:
1998-10
期刊:
The Astrophysical Journal
影响因子:
--
作者:
A. MacFadyen;S. Woosley
通讯作者:
A. MacFadyen;S. Woosley
DOI:
10.1088/0004-637x/814/1/19
发表时间:
2015-10
期刊:
The Astrophysical Journal
影响因子:
--
作者:
M. Aschwanden
通讯作者:
M. Aschwanden