论文标题
具有空间基和亚轨道光学cherenkov探测器的中微子目标观测值
Neutrino Target-of-Opportunity Observations with Space-based and Suborbital Optical Cherenkov Detectors
论文作者
论文摘要
能够达到超高能量的宇宙射线加速器也有望通过源或周围环境中的野外相互作用产生很高的能量中微子。许多候选天体物理源类别本质上是短暂的，或表现出耀斑的活性。将地球作为中微子转换器，诸如诗歌和EUSO-SPB2之类的基于空的光学光学Cherenkov探测器将能够检测到由cosmic tau netrinos产生的tau-lepton引起的向上移动的广泛的空气淋浴，并用能量$ \ sim 10 $ \ sim 10 $ \ sim 10 $ \ sim 10 $ \ sim。 EUSO-SPB2和诗歌都将能够快速重新分配，从而可以快速对天体物理瞬态事件进行反应。我们计算EUSO-SPB2和诗歌的瞬态灵敏度和天空覆盖率，这是在观察时间对太阳和月球施加的约束。我们还计算了两个检测器的中微子地平线，以用于多种建模的天体中微子中微子流体。我们发现，EUSO-SPB2和诗歌都将在附近来源建模的中微子平车水平上实现短暂的敏感性。最后，我们讨论了每个任务的前景，以检测到各种模型的天体中微子来源的至少一个瞬态事件。
Cosmic-ray accelerators capable of reaching ultra-high energies are expected to also produce very-high energy neutrinos via hadronic interactions within the source or its surrounding environment. Many of the candidate astrophysical source classes are either transient in nature or exhibit flaring activity. Using the Earth as a neutrino converter, suborbital and space-based optical Cherenkov detectors, such as POEMMA and EUSO-SPB2, will be able to detect upward-moving extensive air showers induced by decaying tau-leptons generated from cosmic tau neutrinos with energies $\sim 10$ PeV and above. Both EUSO-SPB2 and POEMMA will be able to quickly repoint, enabling rapid response to astrophysical transient events. We calculate the transient sensitivity and sky coverage for both EUSO-SPB2 and POEMMA, accounting for constraints imposed by the Sun and the Moon on the observation time. We also calculate both detectors' neutrino horizons for a variety of modeled astrophysical neutrino fluences. We find that both EUSO-SPB2 and POEMMA will achieve transient sensitivities at the level of modeled neutrino fluences for nearby sources. We conclude with a discussion of the prospects of each mission detecting at least one transient event for various modeled astrophysical neutrino sources.
