【10.17;Seminar】2025年粒子天体物理全国重点实验室系列学术报告 #26：宇宙线多信使天文交流会

时间/Time: 10月17日周五上午9:00/Friday,October 17,9:00 a.m.

地点/Location: 多学科楼124会议室/Meeting Room 124,Multidisciplinary building

本次系列学术报告聚焦中微子天文学、多信使天文学与宇宙磁场测量的前沿进展，特邀三位国际知名专家，分享从贝加尔湖深水探测到宇宙大尺度磁场研究的最新成果。日程安排如下：

报告题目/Title: The Baikal-GVD Deep-Underwater Neutrino Telescope: Status and Recent Results.

报告人/ Speaker: Senior Researcher Bair Shaibonov

报告时间/Time: 2025/10/17 9:00 AM (Beijing time)

报告地点/Location: Multidiscipline Building 124

主持人/Host: Prof. Mingjun Chen

摘要/Abstract:

This talk reviews the design and key features of the Baikal-GVD neutrino telescope,which is the largest in the Northern Hemisphere. It is being constructed in Lake Baikal,and has a detection volume approaching 0.7 km3 and is increasing annually. Currently,the underwater installation consists of 4212 optical modules in 117 525-meter long strings. The modular design of the detector allows for data collection during construction. This review provides an overview of the data processing system,recent experimental results on high-energy cascades and tracks,including confirmation of an astrophysical diffuse neutrino flux and the existence of a Galactic neutrino component.

个人简介/Biography:

Bair Shaibonov was born in Irkutsk in 1980 and graduated from the Moscow Engineering Physics Institute in 2003. After completing postgraduate studies at the Institute for Nuclear Research of the Russian Academy of Sciences,he defended his PhD thesis: «Separation of events from cascades initiated by muons and neutrinos in experiments at the Baikal deep-sea neutrino telescope» in 2010. Now, he is a senior researcher at the Dzhelepov Laboratory of Nuclear Problems at the Joint Institute for Nuclear Research, and a regular member of winter expeditions to Lake Baikal. He is the principal developer of the data processing system Baikal Analysis and Reconstruction Software (BARS) and coordinates the work of data processing and analysis group. He is also the main photographer for the winter expeditions, whose photographs have been published in popular science magazines, used in well-known media projects, and presented at scientific conferences to illustrate the Baikal neutrino experiment,as well as in two photo albums. 
 

报告题目/Title: Multi-Messenger Signatures of the Milky Way Galaxy in Cosmic Rays,Neutrinos,and Gamma Rays

报告人/ Speaker: Prof. Dmitri Semikoz

报告时间/Time: 2025/10/17 14:00 PM (Beijing time)

告地点/Location: Multidiscipline Building 124

主持人/Host: Prof. Songzhan Chen

摘要/Abstract:

In this talk,I will review recent measurements of the local Galactic cosmic ray flux up to the knee region,as well as the emission from the Milky Way galaxy in gamma-rays and neutrinos within the same energy range. I will discuss the major classes of Galactic sources of high-energy cosmic rays,their multi-messenger signatures,and present an overview of both observational data and theoretical models of diffuse emission from the Galaxy.

个人简介/Biography:

Dmitri Semikoz is working in the Laboratory of Astroparticle Physics and Cosmology in Paris. His main subject of interest is high energy astrophysics,including Galactic and extragalactic cosmic rays,gamma-ray astronomy and neutrino astronomy. He is member of LHAASO collaboration. 
 

报告题目/Title: Intergalactic and cosmological magnetic field measurements with gamma-ray telescopes and multi-messenger methods

报告人/ Speaker: Prof. Andrii Neronov

报告时间/Time: 2025/10/17 15:30 PM (Beijing time)

告地点/Location: Multidiscipline Building 124

主持人/Host: Prof. Songzhan Chen

摘要/Abstract:

I will overview methods of measurements of magnetic fields in the Large Scale Structure of the Universe. Such fields and may originate from the Early Universe. In this case their presence at different cosmological epochs can be traced through their imprints on multi-messenger cosmological observables. I will discuss known observational constraints on the cosmological magnetic fields and argue that gamma-ray telescopes,and in particular LHAASO can make an important contribution to the understanding of the intergalactic and cosmological magnetic fields. 

个人简介/Biography:

Andrii Neronov is a professor at Astroparticle and Cosmology laboratory of the University Paris City in France and at Ecole Polytechnique Federale de Lausanne in Switzerland with research interests in the domains of multi-messenger astronomy and cosmology.