引力透镜与伽马射线之间交叉相关的探测
宇宙学与河外天体物理
2020-03-18 v2 高能天体物理现象
摘要
近年来，许多伽马射线源已被识别，但未分辨成分承载着关于最暗弱发射的宝贵信息。为提取该信息，与宇宙中物质引力示踪量的交叉相关已被证明是一种有前景的工具。我们在此报告首次识别出的伽马射线与由弱引力透镜探测的宇宙质量分布之间的交叉相关信号。我们使用暗能量巡天 Y1 弱透镜星表与费米大面积望远镜 9 年伽马射线数据，获得 5.3 的信噪比。该信号主要集中于小角尺度与高伽马射线能量处，并在延展分离距离上有一相关迹象。耀变体发射可能是小尺度效应的起源。我们探讨了大尺度成分在天体物理源与粒子暗物质发射方面的含义。
引用
@article{arxiv.1907.13484,
title = {Detection of cross-correlation between gravitational lensing and gamma rays},
author = {S. Ammazzalorso and D. Gruen and M. Regis and S. Camera and S. Ando and N. Fornengo and K. Bechtol and S. L. Bridle and A. Choi and T. F. Eifler and M. Gatti and N. MacCrann and Y. Omori and S. Samuroff and E. Sheldon and M. A. Troxel and J. Zuntz and M. Carrasco Kind and J. Annis and S. Avila and E. Bertin and D. Brooks and D. L. Burke and A. Carnero Rosell and J. Carretero and F. J. Castander and M. Costanzi and L. N. da Costa and J. De Vicente and S. Desai and H. T. Diehl and J. P. Dietrich and P. Doel and S. Everett and B. Flaugher and P. Fosalba and J. Garcia-Bellido and E. Gaztanaga and D. W. Gerdes and T. Giannantonio and D. A. Goldstein and R. A. Gruendl and G. Gutierrez and D. L. Hollowood and K. Honscheid and D. J. James and M. Jarvis and T. Jeltema and S. Kent and N. Kuropatkin and O. Lahav and T. S. Li and M. Lima and M. A. G. Maia and J. L. Marshall and P. Melchior and F. Menanteau and R. Miquel and R. L. C. Ogando and A. Palmese and A. A. Plazas and A. K. Romer and A. Roodman and E. S. Rykoff and C. Sanchez and E. Sanchez and V. Scarpine and S. Serrano and I. Sevilla-Noarbe and M. Smith and M. Soares-Santos and F. Sobreira and E. Suchyta and M. E. C. Swanson and G. Tarle and D. Thomas and V. Vikram and Y. Zhang},
journal= {arXiv preprint arXiv:1907.13484},
year = {2020}
}
备注
24 pages, 10 figures, v2: text re-arranged, typos corrected, slight improvement in the detection significance, matching version accepted for publication in PRL