利用ANTARES望远镜对所有味银河系弥散中微子辐射的新约束
高能天体物理现象
2017-09-20 v2
摘要
由我们银河系中加速宇宙线与星际介质相互作用产生的甚高能中微子通量尚未确定。该通量的表征将阐明银河系加速器特征、气体分布形态以及银河系宇宙线传输。银河系中心平面可能是增强中微子产生的场所，从而导致 IceCube 合作组测量的地外中微子信号中的各向异性。位于地中海的 ANTARES 中微子望远镜对此天区部分提供了有利视野，从而有助于确定该通量。预期的银河系弥散中微子辐射可通过将宇宙线产生与传播模型与银河系气体分布形态相联系而获得。本文中，假定最近为解释高能伽马射线银河系弥散辐射而引入的所谓“Gamma model”为参考。该“Gamma model”预测的中微子通量依赖于所假设的初级宇宙线能谱截断。考虑到径向依赖的扩散系数，该提出情景能够解释本地宇宙线测量以及银河系伽马射线观测。本工作使用九年的 ANTARES 数据，根据该情景搜索可能的银河系贡献。考虑了所有味中微子相互作用。未观测到事件超出，并对中微子通量设定了上限：假设初级宇宙线能谱截断在 5 (50) PeV 时，为“Gamma model”预测的 () 倍。该极限排除了银河系弥散中微子辐射作为 IceCube 测量的两半球间“能谱异常”主要原因的可能性。
引用
@article{arxiv.1705.00497,
title = {New Constraints on all flavour Galactic diffuse neutrino emission with the ANTARES telescope},
author = {A. Albert and M. André and M. Anghinolfi and G. Anton and M. Ardid and J. -J. Aubert and T. Avgitas and B. Baret and J. Barrios-Martí and S. Basa and B. Belhorma and V. Bertin and S. Biagi and R. Bormuth and S. Bourret and M. C. Bouwhuis and R. Bruijn and J. Brunner and J. Busto and A. Capone and L. Caramete and J. Carr and S. Celli and R. Cherkaoui El Moursli and T. Chiarusi and M. Circella and J. A. B. Coelho and A. Coleiro and R. Coniglione and H. Costantini and P. Coyle and A. Creusot and A. F. Díaz and A. Deschamps and G. De Bonis and C. Distefano and I. Di Palma and A. Domi and C. Donzaud and D. Dornic and D. Drouhin and T. Eberl and I. El Bojaddaini and N. El Khayati and D. Elsässer and A. Enzenhöfer and A. Ettahiri and F. Fassi and I. Felis and L. A. Fusco and S. Galatà and P. Gay and V. Giordano and H. Glotin and T. Grégoire and R. Gracia Ruiz and K. Graf and S. Hallmann and H. van Haren and A. J. Heijboer and Y. Hello and J. J. Hernández-Rey and J. Hößl and J. Hofestädt and C. Hugon and G. Illuminati and C. W. James and M. de Jong and M. Jongen and M. Kadler and O. Kalekin and U. Katz and D. Kießling and A. Kouchner and M. Kreter and I. Kreykenbohm and V. Kulikovskiy and C. Lachaud and R. Lahmann and D. Lefèvre and E. Leonora and M. Lotze and S. Loucatos and M. Marcelin and A. Margiotta and A. Marinelli and J. A. Martínez-Mora and R. Mele and K. Melis and T. Michael and P. Migliozzi and A. Moussa and S. Navas and E. Nezri and M. Organokov and G. E. Păvălaş and C. Pellegrino and C. Perrina and P. Piattelli and V. Popa and T. Pradier and L. Quinn and C. Racca and G. Riccobene and A. Sánchez-Losa and M. Saldaña and I. Salvadori and D. F. E. Samtleben and M. Sanguineti and P. Sapienza and F. Schüssler and C. Sieger and M. Spurio and Th. Stolarczyk and M. Taiuti and Y. Tayalati and A. Trovato and D. Turpin and C. Tönnis and B. Vallage and V. Van Elewyck and F. Versari and D. Vivolo and A. Vizzoca and J. Wilms and J. D. Zornoza and J. Zúñiga and D. Gaggero and D. Grasso},
journal= {arXiv preprint arXiv:1705.00497},
year = {2017}
}
备注
8 pages, 3 figures, 1 table