AI 中文总结
本研究利用Fermi/GBM与Swift/BAT的联合观测，通过统计关联和时空聚类方法，识别出1720次磁陀星爆发，发现7个新候选磁陀星，并构建了覆盖最低注量的爆发目录。
AI 中文摘要
银河系磁陀星是一类具有极端磁场的中子星，目前仅已知约30个源。它们的短硬X射线和软伽马射线爆发为发现磁陀星活动提供了重要渠道。Fermi伽马射线暴监视器（GBM）等广视场仪器非常适合探测这些爆发，但其较大的定位不确定性使得将单个爆发与特定源关联变得困难。相比之下，编码孔径望远镜可提供角分级的定位精度，但视场较窄。我们通过结合2013年至2025年间相干GBM探测管道获得的宽样本短软触发，以及对存档Swift/BAT图像的定向搜索，来寻找先前未识别的磁陀星并构建磁陀星爆发目录。我们开发了一个统计关联框架，利用BAT探测将GBM爆发定位到角分精度，同时采用时空聚类框架将定位不佳的爆发与共同源关联。这些方法共同识别出1720次磁陀星爆发，其中1170次被可靠地关联到11个已知磁陀星。其余550次爆发无法归因于特定源。我们通过三个互补的发现渠道识别出七个新的候选磁陀星。该目录由关联爆发组成，覆盖到GBM观测到的最低注量。我们还提供了目录的光谱和时间分析。新的候选源为X射线后续观测提供了目标，可能揭示先前未识别的银河系磁陀星。更广泛地说，这项工作展示了如何结合具有互补能力的仪器来最大化高能瞬变观测的科学回报。
英文摘要
Galactic magnetars are a rare class of neutron stars with extreme magnetic fields, with only about 30 known sources. Their short hard X-ray and soft gamma-ray bursts provide an important channel for discovering magnetar activity. Wide-field instruments such as the Fermi Gamma-ray Burst Monitor (GBM) are well suited to detecting these bursts, but their broad localization uncertainties make it difficult to associate individual bursts with specific sources. Coded-aperture telescopes, in contrast, provide arcminute-scale localizations but have narrower fields of view. We search for previously unidentified magnetars and construct a magnetar burst catalog by combining a broad sample of short, soft triggers from our coherent GBM detection pipeline over 2013-2025 with targeted searches of archival Swift/BAT images. We develop a statistical association framework that uses BAT detections to localize GBM bursts to arcminute precision, together with a spatio-temporal clustering framework that associates poorly localized bursts with common sources. Together, these methods identify 1720 magnetar bursts, of which 1170 are confidently associated with 11 known magnetars. The remaining 550 bursts could not be assigned to specific sources. We identify seven candidate new magnetars through three complementary discovery channels. The catalog, composed of the associated bursts, extends to the lowest fluences observed by GBM. We also provide spectral and temporal analyses of the catalog. The new candidate sources provide targets for X-ray follow-up that could reveal previously unidentified Galactic magnetars. More broadly, this work demonstrates how combining instruments with complementary capabilities can maximize the scientific return of high-energy transient observations.
