Ando Shin'ichiro, Beacom John F
Department of Physics, School of Science, The University of Tokyo, Tokyo 113-0033, Japan and Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA.
Phys Rev Lett. 2005 Aug 5;95(6):061103. doi: 10.1103/PhysRevLett.95.061103. Epub 2005 Aug 3.
Gamma-ray bursts (GRBs) are rare, powerful explosions displaying highly relativistic jets. It has been suggested that a significant fraction of the much more frequent core-collapse supernovae are accompanied by comparably energetic but mildly relativistic jets, which would indicate an underlying supernova-GRB connection. We calculate the neutrino spectra from the decays of pions and kaons produced in jets in supernovae, and show that the kaon contribution is dominant and provides a sharp break near 20 TeV, which is a sensitive probe of the conditions inside the jet. For a supernova at 10 Mpc, 30 events above 100 GeV are expected in a 10 s burst in the IceCube detector.
伽马射线暴（GRBs）是罕见的、强大的爆炸，展现出高度相对论性喷流。有人提出，在更为频繁的核心坍缩超新星中，相当一部分伴随着能量相当但相对论性较弱的喷流，这将暗示超新星与伽马射线暴之间存在潜在联系。我们计算了超新星喷流中产生的π介子和K介子衰变产生的中微子能谱，并表明K介子的贡献占主导，且在20 TeV附近提供一个明显的突变，这是喷流内部条件的一个灵敏探测器。对于距离为10 Mpc的超新星，在冰立方探测器中，预计在10秒的爆发中有30个能量高于100 GeV的事例。
