利用冰立方/深地探测器探测由碰撞加热伽马射线暴产生的GeV中微子的前景。
Detection prospects for GeV neutrinos from collisionally heated gamma-ray bursts with IceCube/DeepCore.
作者信息
Bartos I, Beloborodov A M, Hurley K, Márka S
机构信息
Department of Physics, Columbia University, New York, New York 10027, USA and Columbia Astrophysics Laboratory, Columbia University, New York, New York 10027, USA.
Space Sciences Laboratory, University of California, Berkeley, Berkeley, California 94720, USA.
出版信息
Phys Rev Lett. 2013 Jun 14;110(24):241101. doi: 10.1103/PhysRevLett.110.241101. Epub 2013 Jun 12.
Jet reheating via nuclear collisions has recently been proposed as the main mechanism for gamma-ray burst (GRB) emission. In addition to producing the observed gamma rays, collisional heating must generate 10-100 GeV neutrinos, implying a close relation between the neutrino and gamma-ray luminosities. We exploit this theoretical relation to make predictions for possible GRB detections by IceCube + DeepCore. To estimate the expected neutrino signal, we use the largest sample of bursts observed by the Burst and Transient Source Experiment in 1991-2000. GRB neutrinos could have been detected if IceCube + DeepCore operated at that time. Detection of 10-100 GeV neutrinos would have significant implications, shedding light on the composition of GRB jets and their Lorentz factors. This could be an important target in designing future upgrades of the IceCube + DeepCore observatory.
通过核碰撞进行喷流再加热最近被提出作为伽马射线暴（GRB）辐射的主要机制。除了产生观测到的伽马射线外，碰撞加热必定会产生10 - 100 GeV的中微子，这意味着中微子和伽马射线光度之间存在密切关系。我们利用这一理论关系对冰立方中微子天文台（IceCube）+深度核心探测器（DeepCore）可能探测到的伽马射线暴进行预测。为了估计预期的中微子信号，我们使用了1991 - 2000年爆发与暂现源实验观测到的最大爆发样本。如果当时冰立方中微子天文台+深度核心探测器已经运行，伽马射线暴中微子本可以被探测到。探测到10 - 100 GeV的中微子将具有重大意义，有助于揭示伽马射线暴喷流的组成及其洛伦兹因子。这可能是设计冰立方中微子天文台+深度核心探测器未来升级版的一个重要目标。
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