天鹅座区域包含巨大的分子云、原子云和年轻恒星,是一个有前景的银河系中微子源候选体。宇宙射线在该区域的输运可以产生中微子和γ射线。近期,高海拔宇宙线观测站(LHAASO)在该区域探测到一个超高能γ射线气泡(天鹅座气泡)。利用冰立方中微子天文台(IceCube)在7年全探测器运行期间公开的径迹事件,我们基于LHAASO γ射线观测构建中微子发射模板,搜索来自天鹅座气泡的相关中微子信号。对于所有采用的模板,均未发现显著信号。基于7 TeV γ射线通量模板,我们在5 TeV处设定了天鹅座气泡中微子发射的90%置信水平(C.L.)通量上限为$5.7\times10^{-13}\\, \mathrm{TeV}^{-1}\mathrm{cm}^{-2}\mathrm{s}^{-1}$。
英文摘要:
The Cygnus region, which contains massive molecular and atomic clouds and young stars, is a promising Galactic neutrino source candidate. Cosmic rays transport in the region can produce neutrinos and $γ$-rays. Recently, the Large High Altitude Air Shower Observatory (LHAASO) detected an ultrahigh-energy $γ$-ray bubble (Cygnus Bubble) in this region. Using publicly available track events detected by the IceCube Neutrino Observatory in 7 years of full detector operation, we conduct searches for correlated neutrino signals from the Cygnus Bubble with neutrino emission templates based on LHAASO $γ$-ray observations. No significant signals were found for any employed templates. With the 7 TeV $γ$-ray flux template, we set a flux upper limit of 90% confidence level (C.L.) for the neutrino emission from the Cygnus Bubble to be $5.7\times10^{-13}\, \mathrm{TeV}^{-1}\mathrm{cm}^{-2}\mathrm{s}^{-1}$ at 5 TeV.
Institutt for fysikk, NTNU, Trondheim, Norway(挪威特隆赫姆挪威科技大学物理系);Department of Physics, School of Natural Sciences, Technical University Munich, Germany(德国慕尼黑工业大学自然科学学院物理系)
Suppressed diffusion and gamma-ray emission from the Cygnus bubble
Gran Sasso Science Institute (GSSI)(格兰萨索科学研究所);INFN-Laboratori Nazionali del Gran Sasso (LNGS)(意大利国家核物理研究所格兰萨索国家实验室);INAF-Osservatorio Astrofisico di Arcetri(意大利国家天体物理研究所阿切尔天文台)
Microquasar Cygnus X-3 as the PeVatron powering the Cygnus Bubble
University of Science and Technology of China(中国科学技术大学);Yerevan State University(埃里温国立大学);TIANFU Cosmic Ray Research Center(天府宇宙线研究中心);Max-Planck-Institut for Nuclear Physics(马克斯·普朗克核物理研究所)
Multimessenger Concordance for the Cygnus Region as the Source of the Cosmic-Ray Knee
Gran Sasso Science Institute(格兰萨索科学研究所);INFN, Laboratori Nazionali del Gran Sasso(意大利国家核物理研究所,格兰萨索国家实验室);The Pennsylvania State University(宾夕法尼亚州立大学);Yukawa Institute for Theoretical Physics(京都大学汤川理论物理研究所);University of L’Aquila(拉奎拉大学);INAF Osservatorio Astrofisico di Arcetri(意大利国家天体物理研究所阿切特里天文台);Shanghai Jiao Tong University(上海交通大学)
Deciphering the gamma-ray emission in the Cygnus region
Max-Planck-Institut für Kernphysik(马克斯·普朗克核物理研究所);Zentrum für Astronomie der Universität Heidelberg, Astronomisches Rechen-Institut(海德堡大学天文中心,天文计算研究所);Max-Planck-Institut für Astronomie(马克斯·普朗克天文学研究所)
Measuring the Astrophysical Galactic Plane Neutrino Flux and Searching for Galactic PeVatrons using the IceCube Multi-Flavor Astrophysical Neutrino Sample
From GeV to PeV: Orbital Modulation and Wind-Regulated Ultrahigh-energy Emission in Cygnus~X-3
School of Astronomy and Space Science, Nanjing University(南京大学天文与空间科学学院);Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education(教育部现代天文学和天体物理学重点实验室(南京大学));Tianfu Cosmic Ray Research Center(天府宇宙线研究中心);State Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences(中国科学院高能物理研究所粒子天体物理国家重点实验室)
A Multi-messenger Search for a Nearby Microquasar Contributor to the Cosmic Ray Knee
School of Physical Science and Technology, Southwest Jiaotong University(西南交通大学物理科学与技术学院);State Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences(中国科学院高能物理研究所粒子天体物理国家重点实验室);University of Chinese Academy of Sciences(中国科学院大学);TIANFU Cosmic Ray Research Center(天府宇宙线研究中心)
Quantitative constraint on the contribution of resolved gamma-ray sources to the sub-PeV Galactic diffuse gamma-ray flux measured by the Tibet ASγ experiment
针对 Tibet ASγ 与 LHAASO 的 sub-PeV 弥散伽马通量差异,本文定量评估 LHAASO 星表源及天鹅座茧的贡献,发现其占比有限,并将差异归因于双方源掩蔽方案导致的有效银纬范围不同。
An Ultrahigh-energy $γ$-ray Bubble Powered by a Super PeVatron
Institute of High Energy Physics, Chinese Academy of Sciences(中国科学院高能物理研究所);University of Chinese Academy of Sciences(中国科学院大学);Tianfu Cosmic Ray Research Center(天府宇宙线研究中心);Dublin Institute for Advanced Studies(都柏林高等研究院);State Key Laboratory of Particle Detection and Electronics(粒子探测与电子学国家重点实验室);University of Science and Technology of China(中国科学技术大学);Southwest Jiaotong University(西南交通大学);Nanjing University(南京大学);Guangzhou University(广州大学);Hebei Normal University(河北师范大学);Purple Mountain Observatory, Chinese Academy of Sciences(中国科学院紫金山天文台);Shanghai Jiao Tong University(上海交通大学);Shanghai Astronomical Observatory, Chinese Academy of Sciences(中国科学院上海天文台);Tibet University(西藏大学);National Astronomical Observatories, Chinese Academy of Sciences(中国科学院国家天文台);Sun Yat-sen University(中山大学);Yunnan University(云南大学);Shandong University(山东大学);Tsinghua University(清华大学);Zhengzhou University(郑州大学);Yunnan Observatories, Chinese Academy of Sciences(中国科学院云南天文台);Sichuan University(四川大学);Institute for Nuclear Research of Russian Academy of Sciences(俄罗斯科学院核物理研究所);Peking University(北京大学);Guangxi University(广西大学);Mahidol University(玛希隆大学);Nanchang University(南昌大学);National Space Science Center, Chinese Academy of Sciences(中国科学院国家空间科学中心)