【12.16; Seminar】2025年粒子天体物理全国重点实验室系列学术报告 #38：Searches for UHE neutrinos and upward-going showers at the Pierre Auger Observatory

时间/Time: 12月16日周二上午10:00/Tuesday, Decmeber 16, 10:00 a.m.

地点/Location: 多学科楼229 会议室/Meeting Room 229, Multidisciplinary Building

报告人/Speaker: 岳保彪 (德国Wuppertal大学)

题目/Title: Searches for UHE neutrinos and upward-going showers at the Pierre Auger Observatory

主持人/Host: 曾宗康

摘要/Abstract

The Pierre Auger Observatory plays a crucial role in detecting the most energetic particles in the Universe, including cosmic rays and neutrinos, to unravel their origins and contribute to multi-messenger astronomy. For the past two decades, during its Phase I, the Observatory has been actively searching for ultra-high-energy (UHE) neutrinos with energies above 0.1 EeV. These neutrinos can travel horizontally through the atmosphere or skim the Earth's crust, producing young air showers that can be detected by the Surface Detector Array, comprising 1,660 water-Cherenkov stations spread over an area of 3,000 km^2. Searches have been conducted for both point sources and diffuse flux. Complementary to these efforts, the Auger Prime Radio Detector (RD) provides an independent and highly sensitive measurement of very inclined air showers, enabling additional neutrino searches. In addition, the Fluorescence Detector, consisting of 27 telescopes, has been used to search for upward-going air showers, motivated by the detection of ‘anomalous’ events by the ANITA instrument. These analyses also serve as a Testbed for up-going shower scenarios that may require physics beyond the Standard Model (BSM). In this presentation, the results of these searches and their astrophysical implications will be summarized, and the potential of the radio antennas will be highlighted.

个人简介/Biography:

Baobiao Yue earned his Ph.D. at Sun Yat-sen University, Guangzhou, in 2021 and continued his research as a postdoctoral researcher there for one more year. Then he switched to the University of Wuppertal as a postdoctoral researcher in 2022. His primary research efforts are neutrino oscillations and UHE neutrino detection.