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Search for Nuclei Sources in the Ultra-High Energy Cosmic Ray Data

机译:在超高能宇宙射线数据中搜索核源

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We present a new method to search for heavy nuclei sources, on top of background, in the Ultra-High EnergyCosmic Ray data [1]. We apply it to the 69 events with energies E ≥ 55 EeV published by the Pierre Auger Collaboration.We find a set of events for which the method reconstructs the source near the Virgo galaxy cluster. The probability tohave a comparable set of events in some background is 0.7%. The reconstructed source is located at 8.5 degreesfrom the active galaxy M87. The probability to reconstruct the source at less than 10 degrees from M87 for data alreadycontaining a comparable set of events is 0.4%. This may be a hint at the Virgo galaxy cluster as an ultra-high energyheavy nuclei source [2, 1]. We discuss the capability of current and near future experiments to test this possibility. Sucha scenario gives a self-consistent description of the Auger anisotropy and composition data at the highest energies.
机译:我们提出了一种在背景之上搜索超高能宇宙射线数据[1]的重核源的新方法。我们将其应用于Pierre Auger协作组织发布的能量E≥55 EeV的69个事件中,我们发现了一组事件,该方法针对该事件重建了处女座星系团附近的源。在某些背景下发生一组可比较的事件的概率为0.7%。重建的源与活动星系M87处于8.5度。对于已经包含可比较事件集的数据,在距M87小于10度的位置重建源的概率为0.4%。这可能暗示处女座星系团是超高能量重核源[2,1]。我们讨论了当前和不久的将来测试这种可能性的能力。这种情况给出了在最高能量下俄歇各向异性和成分数据的自洽描述。

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