Energy Injection in Gamma-Ray Burst Afterglow Models
Energy Injection in Gamma-Ray Burst Afterglow Models
复制标题
伽马射线暴余辉模型中的能量注入
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
E. Gudmundsson
中科院分区：
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作者：
G. Jóhannesson;G. Björnsson;E. Gudmundsson
我们扩展了标准火球模型，广泛用于解释伽玛射线暴（GRB）余辉光变曲线，包括能量注入和应用模型的余辉光变曲线GRB 990510，GRB 000301 C，和GRB 010222。我们证明了离散能量注入会导致光学光变曲线的时间变化，并以GRB 000301 C的光变曲线为例进行了拟合。可能需要连续注入来解释其他爆发，例如GRB 010222。扩展模型合理地解释了从X射线到无线电波长的所有波段的观测结果。在某些情况下，放射性光变曲线表明可能需要额外的模型成分。
We extend the standard fireball model, widely used to interpret gamma-ray burst (GRB) afterglow light curves, to include energy injections and apply the model to the afterglow light curves of GRB 990510, GRB 000301C, and GRB 010222. We show that discrete energy injections can cause temporal variations in the optical light curves, and we present fits to the light curves of GRB 000301C as an example. A continuous injection may be required to interpret other bursts, such as GRB 010222. The extended model accounts reasonably well for the observations in all bands ranging from X-rays to radio wavelengths. In some cases the radio light curves indicate that additional model ingredients may be needed.