论文标题
在ALP方案和GRB 221009A
On ALP scenarios and GRB 221009A
论文作者
论文摘要
从无线电频率到伽马射线，大量观测值观察到了非常明亮的伽马射线爆发GRB 221009a。特别令人感兴趣的是据报道，非常高能量的光子样气阵雨的观察结果是：在Lhaaso举行的18个TEV事件和251 TEV在Carpet-2的事件。在旅行伴形距离时，这些能量处的伽马射线有望通过背景光子上的成对产生事件吸收。假设它们源自GRB 221009a，通过调用轴突样颗粒（ALP）来解释这些事件的观察结果。我们重新考虑这种情况并考虑了由于众所周知的磁场和背景光子密度而导致的天体不确定性。我们发现，强劲的ALP场景不能同时考虑GRB 221009a的18 TEV和251 TEV光子。
The extraordinarily bright gamma-ray burst GRB 221009A was observed by a large number of observatories, from radio frequencies to gamma-rays. Of particular interest are the reported observations of photon-like air showers of very high energy: an 18 TeV event in LHAASO and a 251 TeV event at Carpet-2. Gamma rays at these energies are expected to be absorbed by pair-production events on background photons when travelling intergalactic distances. Several works have sought to explain the observations of these events, assuming they originate from GRB 221009A, by invoking axion-like particles (ALPs). We reconsider this scenario and account for astrophysical uncertainties due to poorly known magnetic fields and background photon densities. We find that, robustly, the ALP scenario cannot simultaneously account for an 18 TeV and a 251 TeV photon from GRB 221009A.
