面向 Super-Kamiokande 实验的更快更准 supernova 定位技术发展
高能天体物理现象
2026-04-10 v1 高能物理 - 实验
摘要
下一次近距离 core-collapse 超新星 (SN) 预计将通过多信使天文学手段提供丰富的科学信息。对冲击破裂 (SBO) 辐射的早期观测尤为关键，有助于理解超新星的爆炸机制以及前体恒星的属性。中子探测器能够在 SBO 辐射到达前提供 SN 的早期警报。Super-Kamiokande (SK) 具备独立重建准确 SN 指向方向的独特能力，这是其实时监控系统 "SNWATCH" 的一部分。近期通过向探测体积中添加 镍 (Gd) 的升级伴随着提高 SN 指向方向重建速度和准确性的努力。一种新的基于 HEALPix 的方法 ("HP-Fitter") 能在不到一秒钟的时间内计算出 SN 的方向。此外，前一种最大似然方向拟合器 ("ML-Fitter") 经过升级，包括采用 Gd 中子捕获事件信息、使用 HP-Fitter 进行初始拟合参数，以及代码重构和优化。改进后的 ML-Fitter 在角分辨率方面表现更好，但方向重建时间为 (秒)。结合 burst 检测和事件重建时间的改进，SNWATCH 现已能够在约 90 秒后生成带有指向信息的 SN 警报。这些升级已在 SK 实验中实现，并集成到新的自动化系统中，用于提供 GCN 通知。
关键词
引用
@article{arxiv.2604.07702,
title = {Development of Faster and More Accurate Supernova Localization at Super-Kamiokande},
author = {K. Abe and Y. Asaoka and M. Harada and Y. Hayato and K. Hiraide and K. Hosokawa and T. H. Hung and K. Ieki and M. Ikeda and J. Kameda and Y. Kanemura and Y. Kataoka and S. Miki and S. Mine and M. Miura and S. Moriyama and K. Nakagiri and M. Nakahata and S. Nakayama and Y. Noguchi and G. Pronost and K. Sato and H. Sekiya and K. Shimizu and R. Shinoda and M. Shiozawa and Y. Suzuki and A. Takeda and Y. Takemoto and H. Tanaka and T. Yano and S. Chen and Y. Itow and T. Kajita and R. Nishijima and K. Okumura and T. Tashiro and T. Tomiya and X. Wang and P. Fernandez and L. Labarga and D. Samudio and B. Zaldivar and C. Yanagisawa and B. Jargowsky and E. Kearns and J. Mirabito and L. Wan and T. Wester and B. W. Pointon and J. Bian and B. Cortez and N. J. Griskevich and Y. Jiang and M. B. Smy and H. W. Sobel and V. Takhistov and A. Yankelevich and J. Hill and M. C. Jang and S. H. Lee and D. H. Moon and R. G. Park and B. S. Yang and B. Bodur and K. Scholberg and C. W. Walter and A. Beauchêne and O. Drapier and A. Ershova and M. Ferey and E. Le Blévec and Th. A. Mueller and P. Paganini and C. Quach and R. Rogly and T. Nakamura and J. S. Jang and R. P. Litchfield and L. N. Machado and F. J. P. Soler and J. G. Learned and K. Choi and N. Iovine and S. Cao and L. H. V. Anthony and D. Martin and N. W. Prouse and M. Scott and Y. Uchida and V. Berardi and N. F. Calabria and M. G. Catanesi and N. Ospina and E. Radicioni and A. Langella and G. De Rosa and G. Collazuol and M. Feltre and M. Mattiazzi and L. Ludovici and M. Gonin and L. Périssé and B. Quilain and S. Horiuchi and A. Kawabata and M. Kobayashi and Y. M. Liu and Y. Maekawa and Y. Nishimura and R. Okazaki and R. Akutsu and M. Friend and T. Hasegawa and Y. Hino and T. Ishida and T. Kobayashi and M. Jakkapu and T. Matsubara and T. Nakadaira and K. Nakamura and Y. Oyama and A. Portocarrero Yrey and K. Sakashita and T. Sekiguchi and T. Tsukamoto and N. Bhuiyan and G. T. Burton and F. Di Lodovico and J. Gao and A. Goldsack and T. Katori and R. Kralik and N. Latham and J. Migenda and R. M. Ramsden and S. Zsoldos and H. Ito and T. Sone and A. T. Suzuki and Y. Takagi and Y. Takeuchi and S. Wada and H. Zhong and J. Feng and L. Feng and S. Han and J. Hikida and J. R. Hu and Z. Hu and M. Kawaue and T. Kikawa and T. Nakaya and T. V. Ngoc and R. A. Wendell and K. Yasutome and S. J. Jenkins and N. McCauley and P. Mehta and A. Tarrant and M. Fanì and M. J. Wilking and Z. Xie and Y. Fukuda and H. Menjo and Y. Yoshioka and J. Lagoda and M. Mandal and J. Zalipska and M. Mori and M. Jia and J. Jiang and W. Shi and K. Hamaguchi and H. Ishino and Y. Koshio and F. Nakanishi and S. Sakai and T. Tada and T. Tano and T. Ishizuka and G. Barr and D. Barrow and L. Cook and S. Samani and D. Wark and A. Holin and F. Nova and S. Jung and J. Y. Yang and J. Yoo and J. E. P. Fannon and L. Kneale and M. Malek and J. M. McElwee and T. Peacock and P. Stowell and M. D. Thiesse and L. F. Thompson and S. T. Wilson and H. Okazawa and S. M. Lakshmi and E. Kwon and M. W. Lee and J. W. Seo and I. Yu and Y. Ashida and A. K. Ichikawa and K. D. Nakamura and S. Tairafune and S. Abe and A. Eguchi and S. Goto and S. Kodama and Y. Kong and H. Hayasaki and Y. Masaki and Y. Mizuno and T. Muro and Y. Nakajima and N. Taniuchi and E. Watanabe and M. Yokoyama and P. de Perio and S. Fujita and C. Jesús-Valls and K. Martens and Ll. Marti and A. D. Santos and K. M. Tsui and M. R. Vagins and J. Xia and S. Izumiyama and M. Kuze and R. Matsumoto and K. Terada and R. Asaka and M. Ishitsuka and M. Shinoki and M. Sugo and M. Wako and K. Yamauchi and T. Yoshida and Y. Nakano and F. Cormier and R. Gaur and V. Gousy-Leblanc and M. Hartz and A. Konaka and X. Li and B. R. Smithers and S. Chen and Y. Wu and B. D. Xu and A. Q. Zhang and B. Zhang and H. Adhikary and M. Girgus and P. Govindaraj and M. Posiadala-Zezula and Y. S. Prabhu and S. B. Boyd and R. Edwards and D. Hadley and M. Nicholson and M. O'Flaherty and B. Richards and A. Ali and B. Jamieson and S. Amanai and C. Bronner and D. Horiguchi and A. Minamino and Y. Sasaki and R. Shibayama and R. Shimamura},
journal= {arXiv preprint arXiv:2604.07702},
year = {2026}
}