论文标题
伽马射线爆发的光学余辉中的闭合关系
The closure relations in optical afterglow of Gamma-Ray Bursts
论文作者
论文摘要
伽马射线爆发（GRB）是极高的能量事件，可以在很高的红移下观察到。除了伽玛射线外，它们还可以在X射线，光学，有时甚至是无线电波长中发射。在这里，在Srinivasaragavan等人的方法之后。 （2020）; Dainotti等。 （2021b，c）和Dainotti等人（2022年，提交），我们考虑了Dainotti等人的82个GRB。 （2022a）已在光学波长中观察到并拟合了断裂的功率定律（BPL）。 We consider the relations between the spectral and temporal indices (closure relations; CRs) according to the synchrotron forward-shock model evolving in the constant-density interstellar medium (ISM; k = 0) and the stellar Wind environment (k = 2) in both slow- and fast-cooling regimes, where the density profile is defined as n is proportional to r to the power minus k.我们发现NU M Max Nuc，NU M制度最有利，其中Nu C和Nu M分别是冷却和特征频率。最后，我们测试了高原的剩余结束时间与当时的亮度之间的2D Dainotti相关性，该GRB在满足最喜欢的CR的GRB上。当我们比较这些2D相关性的固有散射sigma int与Dainotti等人中呈现的散点。 （2020b，2022a），我们看到相关性的散布通常与1 sigma内的先前值一致，无论是在选择偏差之前和之后的选择。这些新信息帮助我们以具有驱动GRB排放机制的功能来查明GRB的子样本，并最终允许GRB用作标准蜡烛
Gamma-ray bursts (GRBs) are extremely high-energy events that can be observed at very high redshift. In addition to gamma rays, they can emit in X-ray, optical, and sometimes radio wavelengths. Here, following the approach in Srinivasaragavan et al. (2020); Dainotti et al. (2021b,c), and Dainotti et al (2022, submitted), we consider 82 GRBs from Dainotti et al. (2022a) that have been observed in optical wavelengths and fitted with a broken power law (BPL). We consider the relations between the spectral and temporal indices (closure relations; CRs) according to the synchrotron forward-shock model evolving in the constant-density interstellar medium (ISM; k = 0) and the stellar Wind environment (k = 2) in both slow- and fast-cooling regimes, where the density profile is defined as n is proportional to r to the power minus k. We find the nu > max nuc, nu m regime is most favored, where nu c and nu m are the cooling and characteristic frequencies, respectively. Finally, we test the 2D Dainotti correlation between the rest-frame end time of the plateau and the luminosity at that time on GRBs that fulfill the most-favored CRs. When we compare the intrinsic scatter sigma int of those 2D correlations to the scatter presented in Dainotti et al. (2020b, 2022a), we see the scatters of our correlations generally agree with the previous values within 1sigma, both before and after correction for selection bias. This new information has helped us to pinpoint subsamples of GRBs with features that could drive the GRB emission mechanism, and eventually allow for GRBs to be used as standard candles
