在皮埃尔俄歇天文台和图皮μ介子望远镜中寻找来自小瞬变事件的同时信号
Search for a simultaneous signal from small transient events in the Pierre Auger Observatory and the Tupi muon telescopes
摘要：
我们目前的搜索结果可能的信号从小规模的太阳瞬态事件（如耀斑和行星际激波）以及可能对应的伽马射线暴（GRB），由图皮μ介子望远镜（Niteroi-巴西，22.90 S，43.20 W，海拔3米）和皮埃尔俄歇天文台表面探测器同时观测到（阿根廷-马里，南纬69.30度，西经35.30度，海拔1400米）。这两个宇宙射线实验都位于南大西洋异常（SAA）区域内。我们对几个例子的分析表明，与太阳活动（太阳耀斑和行星际激波）有关的低能（100 MeV以上）粒子计数率的行为具有相似性。我们还报告了Tupi实验观察到的增强μ子在地面水平的显着性高于8西格玛在1秒装仓计数率（原始数据）在密切的时间重合（T-184秒）与Swift-BAT GRB 110928 B（触发器=504307）。GRB 110928 B的坐标位于垂直图皮望远镜的视野内，爆发靠近MAXI源J1836-194。垂直图皮望远镜中的5分钟μ子计数率以及来自俄歇的公开数据（定标器速率的15分钟平均值）显示，在Swift-BAT GRB 110928 B触发后的时间内，背景波动以上有小峰值。根据长持续时间的触发，这个信号可能表明一个长的伽玛暴，在T-184秒的前兆窄峰。
英文摘要：
We present results of a search for a possible signal from small scale solar transient events (such as flares and interplanetary shocks) as well as possible counterparts to Gamma-Ray Burst (GRB) observed simultaneously by the Tupi muon telescope Niteroi-Brazil, 22.90S, 43.20W, 3 m above sea level) and the Pierre Auger Observatory surface detectors (Malargue-Argentina, 69.30S, 35.30W, altitude 1400 m). Both cosmic ray experiments are located inside the South Atlantic Anomaly (SAA) region. Our analysis of several examples shows similarities in the behavior of the counting rate of low energy (above 100 MeV) particles in association with the solar activity (solar flares and interplanetary shocks). We also report an observation by the Tupi experiment of the enhancement of muons at ground level with a significance higher than 8 sigma in the 1-sec binning counting rate (raw data) in close time coincidence (T-184 sec) with the Swift-BAT GRB110928B (trigger=504307). The GRB 110928B coordinates are in the field of view of the vertical Tupi telescope, and the burst was close to the MAXI source J1836-194. The 5-min muon counting rate in the vertical Tupi telescope as well as publicly available data from Auger (15 minutes averages of the scaler rates) show small peaks above the background fluctuations at the time following the Swift-BAT GRB 110928B trigger. In accordance with the long duration trigger, this signal can possibly suggest a long GRB, with a precursor narrow peak at T-184 sec.
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