MUTI-WAVELENGTH OBSERVATIONS OF GRB 111228A AND IMPLICATIONS FOR THE FIREBALL AND ITS ENVIRONMENT
文献类型：期刊论文
| 作者 | Xin, Li-Ping1,2,3 ; Wang, Yuan-Zhu2,3; Lin, Ting-Ting2,3; Liang, En-Wei2,3; Lu, Hou-Jun2,3; Zhong, Shu-Qing2,3; Urata, Yuji4,5; Zhao, Xiao-Hong6,7; Wu, Chao1; Wei, Jian-Yan1
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2016-02-01 |
| 卷号 | 817期号:2 |
| 关键词 | gamma-ray burst: individual (GRB. 130702A, GRB 111228A) |
| 英文摘要 | Observations of very early multi-wavelength afterglows are critical to reveal the properties of the radiating fireball and its environment as well as the central engine of gamma-ray bursts (GRBs). We report our optical observations of GRB 111228A from 95 s to about 50 hr after the burst trigger and investigate its properties of the prompt gamma-rays and the ambient medium using our data and the data from the Swift and Fermi missions. Our joint optical and X-ray spectral fits to the afterglow data show that the ambient medium features a low dust-to-gas ratio. Incorporating the energy injection effect, our best fit to the afterglow light curves with the standard afterglow model via the Markov Chain Monte Carlo technique shows that epsilon(e) (6.9 +/- 0.3) 10(-2), epsilon(B) = (7.73 +/- 0.62) 10(-6), E-K = (6.32 +/- 0.86) 10(-6) erg, n = 0.100 +/- 0.014 cm(-3). The low medium density likely implies that the afterglow jet may be in a halo or in a hot ISM. A chromatic shallow decay segment observed in the optical and X-ray bands is well explained with the long-lasting energy injection from the central engine, which would be a magnetar with a period of about 1.92 ms inferred from the data. The E-p of its time-integrated prompt gamma-ray spectrum is similar to 26 KeV. Using the initial Lorentz factor (Gamma(0) = 476(237)(+)(225)) derived from our afterglow model fit, it is found that GRB 111228A satisfies the L-iso - E-p,E-z - Gamma(0) relation and bridges the typical GRBs and low luminosity GRBs in this relation. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000369437900069 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5428]  |
| 专题 | 国家天文台_空间科学研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Space Astron & Technol, Beijing 100864, Peoples R China 2.Guangxi Univ, Dept Phys, GXU NAOC Ctr Astrophys & Space Sci, Nanning 530004, Peoples R China 3.Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China 4.Natl Cent Univ, Inst Astron, Chungli 32054, Taiwan 5.Acad Sinica Inst Astron & Astrophys, Taipei 106, Taiwan 6.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China 7.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Bodies, Kunming 650011, Peoples R China 8.Natl Taiwan Normal Univ, Dept Math & Sci, New Taipei 24449, Taiwan |
| 推荐引用方式 GB/T 7714 | Xin, Li-Ping,Wang, Yuan-Zhu,Lin, Ting-Ting,et al. MUTI-WAVELENGTH OBSERVATIONS OF GRB 111228A AND IMPLICATIONS FOR THE FIREBALL AND ITS ENVIRONMENT[J]. ASTROPHYSICAL JOURNAL,2016,817(2). |
| APA | Xin, Li-Ping.,Wang, Yuan-Zhu.,Lin, Ting-Ting.,Liang, En-Wei.,Lu, Hou-Jun.,...&Deng, Jin-Song.(2016).MUTI-WAVELENGTH OBSERVATIONS OF GRB 111228A AND IMPLICATIONS FOR THE FIREBALL AND ITS ENVIRONMENT.ASTROPHYSICAL JOURNAL,817(2). |
| MLA | Xin, Li-Ping,et al."MUTI-WAVELENGTH OBSERVATIONS OF GRB 111228A AND IMPLICATIONS FOR THE FIREBALL AND ITS ENVIRONMENT".ASTROPHYSICAL JOURNAL 817.2(2016). |
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来源：国家天文台
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