首次约束：使用 Baikal-GVD μ 神经灰尘事件
高能天体物理现象
2026-03-24 v1
摘要
Baikal-GVD 是目前在俄罗斯湖贝加尔湖建造中的新一代中子探测器。已探测体积达到 0.7 km，Baikal-GVD 是北半球最大的中子探测器。得益于湖水的高纯度，Baikal-GVD 实现亚度角分辨率，进一步增强了对宇宙中子来源的灵敏度。本文利用 2019 年 4 月至 2024 年 3 月期间部分完成的探测器收集的轨迹事件，搜索来自 92 个感兴趣天体的 μ 神经灰尘通量。为此，我们采用基于 的轨迹重建方法并配合基于阈值的分析。该分析仅使用向上行的 μ 粒子，覆盖 declinations 从 -90 到 +38 的范围。未发现显著超出预期的信号，因此报告上限。所得上限与 ANTARES 和 KM3NeT 的上限相当。我们简要讨论了从 Westerlund 1 方向偶有低显著性信号的可能性。本工作为 Baikal-GVD 数据在完全规模的科学利用奠定了重要里程碑。
关键词
引用
@article{arxiv.2603.21261,
title = {First constraints on point-like astrophysical sources using Baikal-GVD muon neutrino events},
author = {GVD Collaboration and V. A. Allakhverdyan and A. D. Avrorin and A. V. Avrorin and V. M. Aynutdinov and I. A. Belolaptikov and Z. Beňušová and E. A. Bondarev and I. V. Borina and N. M. Budnev and V. A. Chadymov and A. S. Chepurnov and V. Y. Dik and A. N. Dmitrieva and G. V. Domogatsky and A. A. Doroshenko and R. Dvornický and A. N. Dyachok and Zh. -A. M. Dzhilkibaev and E. Eckerová and T. V. Elzhov and V. N. Fomin and A. R. Gafarov and K. V. Golubkov and A. R. Gordeev and T. I. Gress and K. G. Kebkal and V. K. Kebkal and I. V. Kharuk and S. S. Khokhlov and E. V. Khramov and M. M. Kolbin and S. O. Koligaev and K. V. Konischev and A. V. Korobchenko and A. P. Koshechkin and V. A. Kozhin and M. V. Kruglov and V. F. Kulepov and A. A. Kulikov and Y. E. Lemeshev and M. V. Lisitsin and S. V. Lovtsov and R. R. Mirgazov and E. S. Morgunov and D. V. Naumov and A. S. Nikolaev and I. A. Perevalova and A. A. Petrukhin and D. P. Petukhov and E. N. Pliskovsky and M. I. Rozanov and E. V. Ryabov and G. B. Safronov and B. A. Shaybonov and A. S. Sheshukov and V. Y. Shishkin and E. V. Shirokov and F. Šimkovic and A. E. Sirenko and A. V. Skurikhin and A. G. Solovjev and M. N. Sorokovikov and I. Štekl and A. P. Stromakov and O. V. Suvorova and V. A. Tabolenko and V. I. Tretyak and G. V. Trubnikov and B. B. Ulzutuev and Z. Wang and Y. V. Yablokova and D. N. Zaborov and S. I. Zavyalov and D. Y. Zvezdov},
journal= {arXiv preprint arXiv:2603.21261},
year = {2026}
}
备注
16 pages, 3 figures, 1 table. Submitted to Astronomy Letters