论文标题
GRB 200415a：磁性巨型耀斑的短伽马射线爆发？
GRB 200415A: A Short Gamma-Ray Burst from a Magnetar Giant Flare?
论文作者
论文摘要
长期以来，已经提出，软伽马射线中继器（SGR）的巨型耀斑至少为观察到的短伽马射线爆发（GRB）的亚样本做出了贡献。在本文中，我们对最近的Bright Short GRB 200415a的高能数据进行了全面分析，该数据位于雕塑家银河系附近。我们的结果表明，磁性巨型耀斑为GRB 200415a的大多数观察性特性提供了最自然的解释，包括其位置，时间和光谱特征，能量，统计相关性和高能排放。另一方面，发现紧凑的星级合并GRB模型在附近距离内重现此事件很难。对类似事件的未来检测和随访观察对于牢固建立SGR巨型耀斑与附近短GRB的子样本之间的联系至关重要。
The giant flares of soft gamma-ray repeaters (SGRs) have long been proposed to contribute to at least a subsample of the observed short gamma-ray bursts (GRBs). In this paper, we perform a comprehensive analysis of the high-energy data of the recent bright short GRB 200415A, which was located close to the Sculptor galaxy. Our results suggest that a magnetar giant flare provides the most natural explanation for most observational properties of GRB 200415A, including its location, temporal and spectral features, energy, statistical correlations, and high-energy emissions. On the other hand, the compact star merger GRB model is found to have difficulty reproducing such an event in a nearby distance. Future detections and follow-up observations of similar events are essential to firmly establish the connection between SGR giant flares and a subsample of nearby short GRBs.
