与高能中微子成协的潮汐撕裂事件
高能天体物理现象
2021-09-23 v2
摘要
宇宙学中微子为天体物理对象中 otherwise-hidden 的粒子加速机制提供了独特窗口。高能中微子流于2013年被发现，且IceCube合作组最近报道了一例高能中微子与指向地球的活动星系相对论性喷流耀发的很可能成协。然而对许多类似活动星系的联合分析未显示来自更广总体的超出，使宇宙学中微子流的大部分无法解释。本文给出射电发射的潮汐撕裂事件AT2019dsg与第二例高能中微子的很可能成协。AT2019dsg是我们用Zwicky Transient Facility系统搜寻高能中微子光学对应体时识别的。偶然发现任何成协射电发射潮汐撕裂事件的概率为0.5%，而发现如AT2019dsg般辐射测光能流明亮者的概率为0.2%。我们的电磁观测可通过多区模型解释，射电分析揭示了一个嵌入UV光球层中的中心引擎，其驱动一个延展的同步辐射外流。这为PeV中微子产生提供了理想场所。若假定该成协为真，我们的观测表明具有温和相对论性外流的潮汐撕裂事件对宇宙学中微子流有贡献。
引用
@article{arxiv.2005.05340,
title = {A tidal disruption event coincident with a high-energy neutrino},
author = {Robert Stein and Sjoert van Velzen and Marek Kowalski and Anna Franckowiak and Suvi Gezari and James C. A. Miller-Jones and Sara Frederick and Itai Sfaradi and Michael F. Bietenholz and Assaf Horesh and Rob Fender and Simone Garrappa and Tomás Ahumada and Igor Andreoni and Justin Belicki and Eric C. Bellm and Markus Böttcher and Valery Brinnel and Rick Burruss and S. Bradley Cenko and Michael W. Coughlin and Virginia Cunningham and Andrew Drake and Glennys R. Farrar and Michael Feeney and Ryan J. Foley and Avishay Gal-Yam and V. Zach Golkhou and Ariel Goobar and Matthew J. Graham and Erica Hammerstein and George Helou and Tiara Hung and Mansi M. Kasliwal and Charles D. Kilpatrick and Albert K. H. Kong and Thomas Kupfer and Russ R. Laher and Ashish A. Mahabal and Frank J. Masci and Jannis Necker and Jakob Nordin and Daniel A. Perley and Mickael Rigault and Simeon Reusch and Hector Rodriguez and César Rojas-Bravo and Ben Rusholme and David L. Shupe and Leo P. Singer and Jesper Sollerman and Maayane T. Soumagnac and Daniel Stern and Kirsty Taggart and Jakob van Santen and Charlotte Ward and Patrick Woudt and Yuhan Yao},
journal= {arXiv preprint arXiv:2005.05340},
year = {2021}
}
备注
Title and text modified during journal review. Version accepted for publication in Nature Astronomy