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arXiv 0705.1723astro-phhep-exhep-ph
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银河系天鹅座区域Cosmic Ray加速器的中微子

Neutrinos from Cosmic Ray Accelerators in the Cygnus Region of the Galaxy

Francis Halzen, Aongus O'Murchadha

摘要:

虽然超新星遗迹已被确定为银河系宇宙射线最有可能的来源,但没有确凿的观测证据表明这种关联存在。我们在这里表明,冰立方有可能产生无可辩驳的证据,通过检测中微子产生的宇宙射线束与氢在附近的超新星冲击膨胀到星际介质。我们表明,从天鹅座地区的伽马射线通量的观测信息,虽然有限,是足够的,以查明与一个单一的0.5蟹状星云源在TeV水平的中微子的预期事件率内的两个因素,每年2和3.8之间的中微子。最后,我们注意到最近的伽马射线观测揭示了至少三个,可能多达八个这样的源的存在,提高了每年仅从这些源看到超过10个中微子的可能性。

英文摘要:

While supernova remnants have been identified as the most likely sources of the galactic cosmic rays, no conclusive observational evidence for this association exists. We show here that IceCube has the possibility of producing incontrovertible evidence by detecting neutrinos produced by the cosmic ray beam interacting with the hydrogen in the vicinity of the supernova shock expanding into the interstellar medium. We show that the observational information on gamma ray fluxes from the Cygnus region, although limited, is sufficient to pinpoint the expected event rate of the neutrinos associated with a single source of 0.5 Crab at the TeV level to within a factor of two, between 2 and 3.8 neutrinos per year. Finally, we note that recent gamma-ray observations reveal the presence of at least three and possibly up to eight such sources, raising the possibility of seeing more than 10 neutrinos per year from these sources alone.

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