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Thu, 2023-06-29A group of Chinese scientists has recently found key evidence for the existence of nanohertz gravitational waves, marking a new era in nanohertz gravitational wave research. The research was based on pulsar timing observations carried out with the Five-hundred-meter Aperture Spherical Telescope (FAST).The research was conducted by the Chinese Pulsar Timing Array (CPTA) collaboration. Researchers (Prof. Kejia Lee, Post-Doc. Siyuan Chen, PhD students Jiangwei Xu, and Zihan Xue) from Department of Astronomy School of physics and Kavli Institute of Astronomy and Astrophysics of Peking University played vital roles in the collaboration. Their findings were published online in the academic journal Research in Astronomy and Astrophysics (RAA).
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Thu, 2023-06-29New images from the James Webb Space Telescope (JWST) have revealed, for the first time, starlight from two massive galaxies hosting actively growing black holes – quasars – seen less than a billion years after the Big Bang. The black holes have masses are close to a billion times that of the Sun, and the host galaxy masses are almost one hundred times larger, a ratio similar to what is found in the more recent universe. A powerful combination of the wide-field survey of the Subaru Telescope and the JWST has paved a new path to study the distant universe, reports a new study in Nature.
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Mon, 2023-06-19In an article in Nature Astronomy published on June 19, a team of international astronomers, led by Purple Mountain Observatory (PMO) and Kavli Institute of Astronomy and Astrophysics at Peking University (PKU/KIAA), reported the highest resolution images ever obtained of the wind from one of these disks. The physical scale of 3.5 AU is small enough to measure the physics in regions where terrestrial planets form. Interpreting the images with state-of-the-art simulations led to surprising results that alter our view of the physics that determines how disks evolve.
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Mon, 2023-05-29Dr. Kai Wang and five other presenters from other institutes were selected for best oral presentations at the 25th Chinese Astronomical Society Guoshoujing Symposium on Galaxies and Cosmology.
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Sun, 2023-05-07A one-day workshop on the topic of compact objects and gravitational waves was recently held on 2023 April 19. Over 30 undergraduates, PhDs, postdocs and faculty members participated in the event, with a special guest, Prof. Ian Jones, visiting from the University of Southampton,UK.
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Thu, 2023-04-20Luis C. Ho, Director of KIAA and Chair Professor of Peking University, has been elected as a new member of the American Academy of Arts and Sciences (AAAS).
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Fri, 2023-03-24The postdoc science day was held on Wednesday, Mar. 22. This annual event provides an opportunity for postdocs to communicate their research interests, recent advances, and future plans, while also promoting discussions and potential collaborations among postdocs in different research fields.
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Mon, 2023-02-20Dr. Jiang obtained his PhD from Yale University in 2016. He was a Troesh Scholar at California Institute of Technology and a Joint Theory Fellow at the Carnegie Observatories from 2020 to 2023, and an Israeli Planning-and-Budget-Committee Fellow at the Hebrew University of Jerusalem from 2016 to 2019.
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Mon, 2023-01-09Peking University PhD student Zhuokai Liu won the inaugural Vision of Science contest, awarded by the Kavli Foundation to five images from researchers at the 20 Kavli Institutes.
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Tue, 2022-12-13Recently, Peking University PhD student Jinping Zhu, advised by Prof. Zhuo Li, showed that a peculiar class of long-lasting gamma-ray bursts, like GRB 211211, which lack bright supernova counterparts but are associated with candidate kilonova, can indeed originate from black hole-neutron star mergers. Most long-duration gamma-ray bursts (duration longer than about 2 seconds) are typically thought to be derived from core collapses of massive stars, which produce also bright supernovae.
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