Very recently, the Pierre Auger Collaboration reported a 4.5σ correlation between the arrival directions of the highest energy cosmic rays and nearby starburst galaxies. The cosmic rays producing the anisotropy signal have been proposed to originate in low-luminosity gamma-ray bursts (llGRBs). On the basis of the well-justified assumption that at redshift $z<0.3$ the host metallicity is a good indicator of the llGRB production rate, we show that the association of llGRBs and the starbursts correlating with Auger data is excluded at the 90% confidence level.

中文翻译：

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提出一种鲁棒的推断方法，以使低亮度伽马射线爆发成为与星爆星系相关的超高能宇宙射线的祖先

最近，皮埃尔·奥格协作报4.5 σ最高能量宇宙射线的到达方向和附近的星爆星系之间的相关性。已经提出产生各向异性信号的宇宙射线起源于低发光度伽马射线爆发（IIGRB）。基于充分合理的假设，即红移$ž<0.3$ 宿主金属度是llGRB生产率的良好指标，我们表明在90％的置信水平下，与uger数据相关的llGRB和星暴的关联被排除在外。