2024年10月10日， 周四14:00-15:30紫金港西区海纳苑8幢324A Dynamic View of Galaxy Clusters – From the Cores to the Outskirts张从尧 (University of Chicago)Abstract：Galaxy clusters, as massive, virialized halos within the cosmic web, serve as ideal laboratories for advancing our understanding of cosmology, plasma physics, and the nature of dark matter. The study of their formation and evolution stands as one of the frontiers of modern astrophysics. In this talk, I will cover several key topics in cluster studies, from the activities of supermassive black holes at cluster centers to accretion and v...

2024年9月27日， 周五15:30-17:00紫金港西区海纳苑8幢324Rotating convective motions in rapidly rotating planetary fluid: conduction state, thermal instability, and transition to turbulence孔大力 (上海天文台)Abstract：The problem of thermal convection in rapidly rotating, self-gravitating fluid bodies has been widely modeled in spheres or spherical shells, which implicitly neglects the flattening effect due to the centrifugal force. However, the fast rotation of gaseous giant planets and some of Be stars makes them bulge out enough that they can’t be treated as spheres. As a result, investigating...

Volker SpringelMax Planck Institute for AstrophysicsTitle: Supercomputer Simulations of the UniverseTime: 15:30-17:00, April 12Location: Room 215, N. 8 Hainayuan Building

Theme：Astro Group Meeting time：Firday 2:00pmplace：Haina Garden8-323, Zijingang Campus, Zhejiang University

Monday15:30-17:00,8st,Apr. 324, Building 8, Haina Garden, West District, ZijingangElemental abundances of hot plasmas in individual galaxies and galaxy assembliesAbstract：Hot plasmas in individual galaxies and galaxy assemblies are enriched with metals because metal lines stand out above the continuum in the observed X-ray spectra. The observed elemental abundances encode the chemical enrichment processes of the hot plasmas. Dying stars (AGB stars, core-collapse, and type Ia supernovae) are the main cosmic metal factories. Various processes (e.g., AGN feedback, ram pressure) can redistri...