Evidence for a large-scale supergalactic cosmic ray multiplet (arrival directions correlated with energy) structure is reported for ultra-high energy cosmic ray (UHECR) energies above 10$^{19}$ eV using seven years of data from the Telescope Array (TA) surface detector and updated to 10 years. Previous energy-position correlation studies have made assumptions regarding magnetic field shapes and strength, and UHECR composition. Here the assumption tested is that, since the supergalactic plane is a fit to the average matter density of the local Large Scale Structure (LSS), UHECR sources and intervening extragalactic magnetic fields are correlated with this plane. This supergalactic deflection hypothesis is tested by the entire field-of-view (FOV) behavior of the strength of intermediate-scale energy-angle correlations. These multiplets are measured in spherical cap section bins (wedges) of the FOV to account for coherent and random magnetic fields. The structure found is consistent with supergalactic deflection, the previously published energy spectrum anisotropy results of TA (the hotspot and coldspot), and toy-model simulations of a supergalactic magnetic sheet. The seven year data post-trial significance of this supergalactic structure of multiplets appearing by chance, on an isotropic sky, is found by Monte Carlo simulation to be 4.2$\sigma$. The ten years of data post-trial significance is 4.1$\sigma$. Furthermore, the starburst galaxy M82 is shown to be a possible source of the TA Hotspot, and an estimate of the supergalactic magnetic field using UHECR measurements is presented.

中文翻译：

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超高能宇宙线磁偏转多重态超星系结构的证据

使用来自望远镜阵列的七年数据，报告了超过 10$^{19}$ eV 的超高能宇宙射线 (UHECR) 能量的大规模超银河宇宙射线多重线（与能量相关的到达方向）结构的证据（ TA) 表面探测器并更新至 10 年。之前的能量-位置相关性研究已经对磁场形状和强度以及 UHECR 成分进行了假设。这里测试的假设是，由于超星系平面与局部大尺度结构 (LSS) 的平均物质密度拟合，UHECR 源和介入的河外磁场与该平面相关。这种超银河偏转假设通过中尺度能量角相关强度的整个视场 (FOV) 行为进行了测试。这些多重峰在 FOV 的球冠截面箱（楔形）中测量，以解释相干和随机磁场。发现的结构与超星系偏转、先前公布的 TA（热点和冷点）的能谱各向异性结果以及超星系磁片的玩具模型模拟一致。蒙特卡罗模拟发现，这种偶然出现在各向同性天空上的超星系多重星系结构的试验后七年数据显着性为 4.2$\sigma$。试验后十年的数据显着性为 4.1$\sigma$。此外，星爆星系 M82 被证明是 TA 热点的可能来源，并提供了使用 UHECR 测量值对超星系磁场的估计。