基于 IceCube 十年数据的时间积分中微子源搜索
高能天体物理现象
2020-02-12 v1
摘要
本文展示了使用 2008 年 4 月 6 日至 2018 年 7 月 10 日收集的 IceCube 十年数据进行点状中微子源搜索的结果。我们评估了点状源天体物理信号的重要性，在大气μ子和中微子背景中寻找能量通常高于 TeV 的聚集中微子事件的超出。我们进行了全天扫描、选定源目录内搜索、目录总体研究以及三次堆叠银河系目录搜索。北半球扫描天空中最显著的点与 Seyfert II 星系 NGC 1068 重合，该星系已包含在源目录搜索中。在考虑统计试验后，NGC 1068 坐标处的超出与背景预期在 水平上不一致。该结果连同在其他三个源（包括 TXS 0506+056）坐标处观测到的超出的结合表明，总体上与北半球目录中源的相关性在 3.3 显著性上与背景不一致。这些均基于对已十年可用数据累积中微子信号的搜索结果，促使对这些及类似源的进一步研究，包括时间相关分析、多信使相关性和通过探测器即将到来的升级获得更强证据的可能性。
引用
@article{arxiv.1910.08488,
title = {Time-integrated Neutrino Source Searches with 10 years of IceCube Data},
author = {IceCube Collaboration and M. G. Aartsen and M. Ackermann and J. Adams and J. A. Aguilar and M. Ahlers and M. Ahrens and C. Alispach and K. Andeen and T. Anderson and I. Ansseau and G. Anton and C. Argüelles and J. Auffenberg and S. Axani and P. Backes and H. Bagherpour and X. Bai and A. Balagopal V. and A. Barbano and S. W. Barwick and B. Bastian and V. Baum and S. Baur and R. Bay and J. J. Beatty and K. -H. Becker and J. Becker Tjus and S. BenZvi and D. Berley and E. Bernardini and D. Z. Besson and G. Binder and D. Bindig and E. Blaufuss and S. Blot and C. Bohm and M. Börner and S. Böser and O. Botner and J. Böttcher and E. Bourbeau and J. Bourbeau and F. Bradascio and J. Braun and S. Bron and J. Brostean-Kaiser and A. Burgman and J. Buscher and R. S. Busse and T. Carver and C. Chen and E. Cheung and D. Chirkin and S. Choi and K. Clark and L. Classen and A. Coleman and G. H. Collin and J. M. Conrad and P. Coppin and P. Correa and D. F. Cowen and R. Cross and P. Dave and C. 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journal= {arXiv preprint arXiv:1910.08488},
year = {2020}
}