| X-ray Flashes from Off-axis Nonuniform Jets |
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| 作者姓名： | Zhi-Ping Jin and Da-Ming Wei
Purple Mountain Observatory Chinese Academy of Sciences Nanjing National Astronomical Observatories Chinese Academy of Sciences Beijing |
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| 作者单位： | Zhi-Ping Jin and Da-Ming Wei
Purple Mountain Observatory，Chinese Academy of Sciences，Nanjing 210008; National Astronomical Observatories，Chinese Academy of Sciences，Beijing 100012 |
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| 基金项目： | Supported by the National Natural Science Foundation of China. |
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| 摘 要： | It has been widely believed that the outflows in gamma-ray bursts are jetted and some jets may have structures like ε(θ) ∝ θ^-k. We check the possibility that X-ray flashes come from such jets. Both qualitative and quantitative analyses have shown that this model can reproduce most of the observational features of both X-ray flashes and gamma-ray bursts. Using the usual parameters of gamma-ray bursts, we have carried out numerical calculations for both uniform and nonuniform jets, of their fluxes, spectra and peak energies. It seems that nonuniform jets are more appropriate to these observational properties than uniform jets.We have also shown that in our model the observational ratio of gamma-ray bursts to X-ray flashes is about a few units.
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| 关 键 词： | X射线 γ射线 脉冲 天文学？A |
X-ray Flashes from Off-axis Nonuniform Jets |
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| Zhi-Ping Jin and Da-Ming Wei
Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing , National Astronomical Observatories,Chinese Academy of Sciences,Beijing .X-ray Flashes from Off-axis Nonuniform Jets[J].Chinese Journal of Astronomy and Astrophysics,2004,4(5):473-480. |
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| Authors: | Zhi-PingJin Da-MingWei |
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| Institution: | [1]PurpleMountainObservatory,ChineseAcademyofSciences,Nanjing210008 [2]NationalAstronomicalObservatories,ChineseAcademyofSciences,Beijing100012 |
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| Abstract: | |
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| Keywords: | X-rays: general - gamma rays: bursts - ISM: jets and outflows |
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