从地毯-2观测值的宇宙PEV光子的各向同性弥散通量的上限

论文标题

从地毯-2观测值的宇宙PEV光子的各向同性弥散通量的上限

Upper limits on the isotropic diffuse flux of cosmic PeV photons from Carpet-2 observations

论文作者

Dzhappuev, D. D., Afashokov, Yu. Z., Dzaparova, I. M., Dzhatdoev, T. A., Gorbacheva, E. A., Karpikov, I. S., Khadzhiev, M. M., Klimenko, N. F., Kudzhaev, A. U., Kurenya, A. N., Lidvansky, A. S., Mikhailova, O. I., Petkov, V. B., Podlesnyi, E. I., Pozdnukhov, N. A., Romanenko, V. S., Rubtsov, G. I., Troitsky, S. V., Unatlokov, I. B., Vaiman, I. A., Yanin, A. F., Zhuravleva, K. V.

论文摘要

PEV能带中的各向同性弥漫性伽马射线通量是对高能量天体中微子和新物理搜索模型的多通电者测试的重要工具。到目前为止，尚未观察到这种通量。地毯-2是一个空调实验，能够检测具有高于0.1 PEV的能量的天体物理伽玛射线。在这里，我们报告了从1999 - 2011年和2018 - 2022年获得的地毯-2数据的各向同性伽马射线通量的上限。这些结果是通过基于Muon-number分布形状的新统计方法获得的，总结了地毯-2观测值，因为升级的安装（Carpet-3）开始操作。

Isotropic diffuse gamma-ray flux in the PeV energy band is an important tool for multimessenger tests of models of the origin of high-energy astrophysical neutrinos and for new-physics searches. So far, this flux has not yet been observed. Carpet-2 is an air-shower experiment capable of detecting astrophysical gamma rays with energies above 0.1 PeV. Here we report the upper limits on the isotropic gamma-ray flux from Carpet-2 data obtained in 1999-2011 and 2018-2022. These results, obtained with the new statistical method based on the shape of the muon-number distribution, summarize Carpet-2 observations as the upgraded installation, Carpet-3, starts its operation.

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