利用 2MASS 红移巡天与 IceCube 对邻近星系中微子发射的约束
高能天体物理现象
2020-07-20 v2
摘要
本地宇宙中星系的分布具有各向异性特征。搜寻天体物理中微子产生源的天文台可利用这些特征，在中微子数据集与天空中星系分布过密区之间建立方向相关性。本文给出了利用 IceCube 中微子天文台的七年时间积分中微子数据集与 2MASS 红移巡天（2MRS）星表进行两次相关性搜寻的结果。第一项分析搜寻由弥漫星系际超高能宇宙射线（UHECRs）与星系内物质相互作用产生的中微子。第二项分析搜寻本地宇宙中的低光度源，其会在 IceCube 数据集中产生与星系分布方向相关的中微子亚阈值多重事件。两项分析均未观测到显著相关性。本文给出了对本地宇宙内通过弥漫星系际 UHECR 相互作用产生的中微子通量的约束，以及对低光度中微子标准烛光源密度的约束。
引用
@article{arxiv.1911.11809,
title = {Constraints on Neutrino Emission from Nearby Galaxies Using the 2MASS Redshift Survey and IceCube},
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 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:1911.11809},
year = {2020}
}