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首页> 外文期刊>The Astrophysical journal >A COMPTONIZATION MODEL FOR THE PROMPT OPTICAL AND INFRARED EMISSION OF GRB 041219A
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A COMPTONIZATION MODEL FOR THE PROMPT OPTICAL AND INFRARED EMISSION OF GRB 041219A

机译：GRB 041219A的及时光和红外排放的综合模型

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Prompt optical emission from the γ-ray burst of GRB 041219A has been reported by Vestrand et al. There was a fast rise of optical emission simultaneous with the dominant γ-ray pulse, and a tight correlation with the prompt γ-ray emission has been displayed. These indicate that the prompt optical emission and γ-ray emission would naturally have a common origin. We propose that this optical component can be modeled by considering the Comptonization of γ-ray photons by an electron cloud. As a result of this mechanism, the arrival time of the optical photons is delayed compared with that of the γ-rays. We restrict that the lag time to be shorter than 10 s, within which the prompt optical emission is considered to vary simultaneously with the prompt γ-ray emission. Taking the observations of GRB 041219A into account, we derive the number density of the surrounding electron cloud required for Comptonization. The redshift of GRB 041219A is predicted to be z approx< 0.073 as well.
机译：Vestrand等人已经报道了来自GRB 041219A的γ射线猝发的迅速光发射。与主要的γ射线脉冲同时出现的光发射快速上升，并且已经显示出与迅速的γ射线发射紧密相关。这些表明，迅速的光发射和γ射线发射自然有共同的起源。我们建议可以通过考虑电子云对γ射线光子的色散作用来对这种光学组件进行建模。由于该机制，与γ射线相比，光子的到达时间被延迟。我们将滞后时间限制为短于10 s，在该时间范围内，认为瞬态光发射与瞬态γ射线同时变化。考虑到GRB 041219A的观察结果，我们得出了Comptonization所需的周围电子云的数量密度。预测GRB 041219A的红移也为z约<0.073。

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