Characteristics of Double Gamma-Ray Bursts

被引：1

作者：

Liu Tong ^{[1
,2
,3
,4
]}

Sun Mou-Yuan ^{[1
,2
,5
,6
]}

Hou Shu-Jin ^{[1
,2
,7
]}

Li Ang ^{[1
,2
,4
]}

Zhang Fu-Wen ^{[8
]}

Gu Wei-Min ^{[1
,2
]}

Lu Ju-Fu ^{[1
,2
]}

机构：

[1] Xiamen Univ, Dept Astron, Xiamen 361005, Peoples R China

[2] Xiamen Univ, Inst Theoret Phys & Astrophys, Xiamen 361005, Peoples R China

[3] Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China

[4] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China

[5] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA

[6] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA

[7] Nanyang Normal Univ, Coll Phys & Elect Engn, Nanyang 473061, Peoples R China

[8] Guilin Univ Technol, Coll Sci, Guilin 541004, Peoples R China

来源：

CHINESE PHYSICS LETTERS | 2014年 / 31卷 / 11期

基金：

中国国家自然科学基金;

关键词：

CENTRAL ENGINE ACTIVITY; EXTENDED EMISSION; ENERGY INJECTION; ACCRETION DISKS; JET PRECESSION; MAGNETAR; LONG; AFTERGLOWS; LUMINOSITY; BEPPOSAX;

D O I：

10.1088/0256-307X/31/11/119801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Double gamma-ray bursts (DGRBs) have two well-separated sub-bursts in the main prompt emission and the typical time interval between them is in the hundreds of seconds. Among DGRBs, gamma-ray bursts (DGRBs) 110801A and 120716A are the ones with known redshifts. However, unlike GRB 110801A, we show that the two sub-bursts of GRB 120716A is severally similar to the short- and long-duration GRBs, thus it is difficult to explain the origin of GRB 120716A by the popular models on the central engine of GRBs. We suggest that some mechanisms of x-ray flares in GRBs, i.e., a post-merger millisecond pulsars or the jet precession in a black hole hyperaccretion system may produce the DGRB.

引用

页数：3

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