论文标题
在费米GBM爆发中识别GRB前体
Identification of GRB precursors in Fermi-GBM bursts
论文作者
论文摘要
我们对超过11年的费米GBM数据进行了分析，其中发现了217张伽马射线爆发（GRB），其主要爆发前是前体闪光灯。我们发现，短GRB（$ <$ 2）产生前体的可能性是长GRB的10倍。静态时间曲线通过双高斯分布很好地描述，表明观察到的前体具有两个不同的物理祖细胞。已确定的前体GRB的光曲线在在线目录（https://icecube.wisc.edu/~grbweb_public/precursors.html）中公开可用。
We present an analysis of more than 11 years of Fermi-GBM data in which 217 Gamma-Ray Bursts (GRBs) are found for which their main burst is preceded by a precursor flash. We find that short GRBs ($<$2 s) are ~10 times less likely to produce a precursor than long GRBs. The quiescent time profile is well described by a double Gaussian distribution, indicating that the observed precursors have two distinct physical progenitors. The light curves of the identified precursor GRBs are publicly available in an online catalog (https://icecube.wisc.edu/~grbweb_public/Precursors.html).
