Tibet Ⅱ/HD阵列寻找来自蟹状星云的TeVγ射线

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羊八井二期阵列(TibetⅡ)和加密阵列HD(High Density)分别从1995年和1996年成功地运行以来,已经积累了大量的数据.报道了利用Tibet Ⅱ在1995年10月至1997年9月、HD阵列在1997年2月至8月收集的数据寻找来自蟹状星云(Crab Nebula)方向的10TeV和3TeVγ射线稳定发射的初步结果.分析表明,来自Crab Nebula的3TeVγ射线的累积信号事例数显示了稳定增长的趋势,显著性达到了3.2σ,但没有发现10TeV和30TeVγ射线稳定发射的迹象.
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