论文标题
基于ICECUBE NETINPINO的GRB 221009A的模型约束
Model constraints based on the IceCube neutrino non-detection of GRB 221009A
论文作者
论文摘要
GRB 221009a是一个明亮的伽马射线爆发（GRB），各向同性能量大于$ 10^{54}〜{\ rm ergs} $。它相当低的红移使其成为高能量中微子检测的有前途的候选人。但是，IceCube协作报告的该GRB的中微子搜索产生了无效的结果。在本文中，我们利用IceCube观察的上限来测试不同的GRB及时发射模型。我们发现，至少对于这种特定的爆发，可以在大型参数空间中排除耗散的光球模型。内部冲击模型只能使用大量运动洛伦兹因子$γ$生存，其中最严格和保守的约束分别为$γ> \ sim 450 $和$γ> \ sim 200 $。同样，可以用给定的$γ$限制进入质子和电子（$ε_p /ε_e$）的总消散能量的比率。对于$γ<400 $，$ε_p /ε_e<10 $。对于内部碰撞引起的磁重新连接和湍流（ICMART）模型，GRB 221009A的约束是适度的。在ICMART模型下，只有在极端情况下，大多数消散的能量沉积物质量大多数是质子，并且所有加速质子都适合产生中微子，则需要稍大的体积运动（$γ> \ sim 250 $）。
GRB 221009A is a bright Gamma-ray burst (GRB) with isotropic energy being larger than $10^{54} ~{\rm ergs}$. Its fairly low redshift makes it a promising candidate for high energy neutrino detection. However, a neutrino search for this GRB reported by the IceCube collaboration yielded a null result. In this paper, we utilize the upper limit from IceCube observation to test different GRB prompt emission models. We find that, at least for this specific burst, the dissipative photosphere model could be ruled out in a large parameter space. The internal shock model can survive only with a large bulk motion Lorentz factor $Γ$, where the most stringent and conservative constraints are $Γ> \sim 450$ and $Γ> \sim 200$, respectively. Also, the ratio of the total dissipated energy that goes into the protons and electrons ($ε_p / ε_e$) can be constrained with a given $Γ$. For $Γ< 400$, $ε_p / ε_e < 10$ is required. For the Internal-collision-induced Magnetic Reconnection and Turbulence (ICMART) model, the constraint from GRB 221009A is modest. Under ICMART model, only for extreme situations when most dissipated energy deposit into protons and all accelerated protons are suitable for producing neutrinos, a slightly large bulk motion ($Γ> \sim 250$) is required.
