论文标题
GRB 221009a伽玛射线来自重中微子的辐射衰减？
GRB 221009A Gamma Rays from Radiative Decay of Heavy Neutrinos?
论文作者
论文摘要
我们考虑了一种机制，该机制允许减少伽玛射线爆发GRB 221009A的高能量伽玛射线通量的衰减。该机制是基于重$ m_n \ sim0.1 \，\ mathrm {mev} $的存在，主要是无菌中微子$ n $，它与主动中微子混合在一起。 $ n $ s在GRB中以$π$和$ k $衰变的形式与$ν_μ$产生。他们在通往地球的路上经历了辐射衰减$ n \ rightarrowνγ$。伽玛射线的通常指数衰减被提升为光学深度的衰减。讨论了对这种情况的各种限制。我们发现，高能$γ$ $ 18 \，\ mathrm {tev} $以及$ 251 \，\ mathrm {tev} $的可能性可以解释，如果（i）（i）grb活性中性通气距离观察到的极限接近所观察到的极限，（ii）$ n \ n \ rightarrow的分支比率至少10％。
We consider a mechanism which allows to decrease attenuation of high energy gamma ray flux from gamma ray burst GRB 221009A. The mechanism is based on the existence of a heavy $m_N\sim0.1\,\mathrm{MeV}$ mostly sterile neutrino $N$ which mixes with active neutrinos. $N$'s are produced in GRB in $π$ and $K$ decays via mixing with $ν_μ$. They undergo the radiative decay $N\rightarrow νγ$ on the way to the Earth. The usual exponential attenuation of gamma rays is lifted to an attenuation inverse in the optical depth. Various restrictions on this scenario are discussed. We find that the high energy $γ$ events at $18\,\mathrm{TeV}$ and potentially $251\,\mathrm{TeV}$ can be explained if (i) the GRB active neutrino fluence is close to the observed limit, (ii) the branching ratio of $N\rightarrow νγ$ is at least of the order 10%.
