|
Thu, 2025-10-09北京大学物理学院和科维理天文与天体物理研究所江林华教授研究团队使用韦布空间望远镜（JWST）观测数据，获得活动星系核（AGN）对宇宙再电离贡献的严格上限，明确排除AGN作为再电离峰值时期主导电离源的可能性，结果表明恒星形成星系提供了宇宙再电离的主要电离光子。研究成果以“AGNs ruled out as the dominant source of cosmic reionization”为题于2025年10月7日在线发表在《自然·天文》（Nature Astronomy）期刊上。博士生姜丹阳为论文第一作者。
|
 |
|
Thu, 2025-10-09A team led by Professor Linhua Jiang at the Kavli Institute for Astronomy and Astrophysics and School of Physics at Peking University has used the James Webb Space Telescope (JWST) to derive an absolute upper limit on the active galactic nucleus (AGN) contribution to cosmic reionization. This result conclusively rules out the possibility of AGNs being the dominant ionizing sources during the peak period of reionization. The finding suggests that star-forming galaxies provided the primary ionizing photons for cosmic reionization. The study, titled “AGNs ruled out as the dominant source of cosmic reionization,” was published online on October 7, 2025, in Nature Astronomy. Ph.D. student Danyang Jiang is the first author of the paper.
|
|
|
Sat, 2025-09-27为推动中国空间站巡天空间望远镜（CSST）早期科学的顺利开展，北京大学将于2025年10月25–26日举办“2025 KIAA Forum 暨CSST早期星系科学研讨会”。CSST是我国首个光学空间望远镜，也是未来十年最重要的天文项目之一。
|
 |
|
Fri, 2025-09-26类星体是宇宙中最明亮的“灯塔”之一，其能量来自中心超大质量黑洞吞噬气体所释放的巨大能量。尽管它们的亮度极高，可以照亮数百亿光年的距离，但其极端遥远的位置让天文学家一直难以看清黑洞周围最核心区域的细节。如今，天文学家首次在红移 4 的类星体上直接分辨出内部结构——此时宇宙诞生还不到 15 亿年——为研究早期宇宙中黑洞的生长开辟了一扇新的窗口。
|
 |
|
Thu, 2025-09-18科维理所-德国马普地外物理研究所双边学术研讨会成功举办研讨会合影9月9日至12日，北京大学科维理天文与天体物理研究所（KIAA）与德国马普地外物理研究所（MPE）联合举办双边学术研讨会。来自MPE团队的六位专家与来自KIAA的多名师生参与了本次研讨会。此次研讨会旨在深化MPE红外研究团队与KIAA的合作关系。
|
 |
|
Mon, 2025-09-152025年9月，龙凤博士作为助理教授正式加入北京大学科维理天文与天体物理研究所。龙凤于2019年在北京大学获得博士学位。2019年9月至2022年8月作为SMA Fellow在哈佛-史密松天体物理中心从事博士后研究。2022年9月入选美国宇航局哈勃学者计划，并加入亚利桑那大学行星科学系继续从事博士后工作。龙凤的主要研究方向是原行星盘和行星形成。原行星盘是孕育行星和生命的摇篮，理解行星系统多样性的起源需要深入了解原行星盘的性质...
|
 |
|
Fri, 2025-09-0519:00 – 20:30, Wednesday, September 10, 2025；
Siyuan Multi-functional Hall, Room 301 West, School of Physics, Peking University
|
 |
|
Thu, 2025-05-15Are We Alone? And Where Do We Come From? An international team of researchers led by Peking University PhD student Fengwei Xu has conducted a most sensitive, highest-resolution, and dual-band survey of three distant molecular clouds in the Milky Way Galactic center. Equipped with sharp color-discerning "eyes", they have discovered more than 300 protoplanetary disk candidates, some of which could represent the early stages of our own solar system. The studies inspire further investigations of protoplanetary disk in various environment.
|
 |
|
Wed, 2025-04-23PKU awarded six incoming astronomy postdocs as Boya Postdoctoral Fellows, from a competitive pool of over 50 candidates. Five of the postdocs, Suyeon Son, Anindya Saha, Logan Fries, Kan Chen, and Dan Qiu, are affiliated with KIAA, while one, Zhao Li, is affiliated with the DoA.
|
 |
|
Tue, 2025-04-22Prof.Kohei Inayoshi at KIAA was awarded the "The Young Scientists’ Award” from the Minister of Education, Culture, Sports, Science and Technology (MEXT) of Japan, a prestigious honor that recognizes and encourages exceptional young researchers in the fields of science and technology.
|
 |
