Strong lensing of high-energy neutrinos

作     者：Yoon Chan Taak Tommaso Treu Yoshiyuki Inoue Alexander Kusenko 

作者机构：Physics and Astronomy Department University of California Los Angeles California 90095-1547 USA Department of Earth and Space Science Graduate School of Science Osaka University 1-1 Machikaneyama Toyonaka Osaka 560-0043 Japan Interdisciplinary Theoretical and Mathematical Science Program (iTHEMS) RIKEN 2-1 Hirosawa Saitama 351-0198 Japan Kavli Institute for the Physics and Mathematics of the Universe (WPI) The University of Tokyo Institutes for Advanced Study The University of Tokyo 5-1-5 Kashiwanoha Kashiwa Chiba 277-8583 Japan Theoretical Physics Department CERN 1211 Geneva 23 Switzerland 

出 版 物：《Physical Review D》 (物理学评论D辑：粒子、场、重力与宇宙学)

年 卷 期：2023年第107卷第2期

页      面：023011-023011页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：National Research Foundation of Korea, NRF UC Southern California Hub UC National Laboratories Simons Foundation, SF Ministry of Education, Culture, Sports, Science and Technology, MEXT Ministry of Education, MOE, (2021R1A6A3A14044070) Japan Society for the Promotion of Science, KAKEN, (19K14772, JP20H05853) University of California, UC, (JP22K18277, JP19K14772, JP18H05458) U.S. Department of Energy, USDOE, (DE-SC0009937) 

主　　题：Gravitational lenses Astrophysical jets Galactic halos Galaxies Neutrinos Normal galaxies Astronomical masses & mass distributions Neutrino detectors 

摘      要：We consider the effects of strong gravitational lensing by galaxy-scale deflectors on the observations of high-energy (E≫GeV) neutrinos (HENs). For HENs at cosmological distances, the optical depth for multiple imaging is ∼10−3, implying that while we do not expect any multiply imaged HENs with present samples, next-generation experiments should be able to detect the first such event. We then present the distribution of expected time delays to aid in the identification of such events, in combination with directional and energy information. In order to assist in the evaluation of HEN production mechanisms, we illustrate how lensing affects the observed number counts for a variety of intrinsic luminosity functions of the source population. Finally, we see that the lensing effects on the cosmic neutrino background flux calculation would be negligible by taking kiloparsec-scale jets as an example.