发稿时间:2023-10-22浏览次数:10

USTC Astronomy Colloquium Series: 2023 Fall
γ-ray Astronomy from ground & space
曹臻  研究员
中国科学院高能物理研究所
2023/10/24, 4:00pm , the 19th-floor Observatory Hall
报告人:
曹臻教授,1994年在中科院北京高能所获物理学博士学位。1994-2003先后在美国俄勒冈大学物理系、犹他大学物理系从事重离子物理的理论研究和超高能宇宙线HIRES实验研究,2004年入选中国科学院“引进国外杰出人才”计划,任中意合作ARGO-YBJ实验中方发言人,担任多项基金委重大国际合作项目、重点项目和973项目负责人。2015年起,任“高海拔宇宙线观测站( LHAASO)”项目经理、首席科学家,2014年至今,任国际纯粹及应用物理联合会(IUPAP) 的〃天体粒子物理国际委员会(WG-10)〃委员、〃天体粒子物理委员会(C4)〃委员。现为高能所粒子天体物理中心研究员。1994年至今,活跃于国内外宇宙线和伽马天文领域,在国际专业刊物发表了 130多篇科学论文,总引用率超过5,500次。
摘要:
GeV/TeV γ-ray astronomy is a very fruitful field in last 3 decades. Now, the PeV gamma ray astronomy era. In the new territory, the diffuse photon flux has been measured with unexpected excesses, the interpretation is an important open issue. 7100+ sources in GeV, 300 in TeV and 43 above 100 TeV are detected and published in catalogs w/~40% of them unidentified, indicating lots of new phenomena. Radiation mechanisms and particle acceleration processes are still far to be understood even for few well identified sources fundamental issues, LIV and DM, are tested w/ limits renewed constantly. Upgrading in instrumentation is certainly demanded to really touch the core issues.