科学研究
-
2024.11.15
Halo Responses to Baryonic Mechanisms at Small Scale [EN]
The Voids-within-Voids-within-Voids (VVV) project developed a series of extremely high-resolution N-body simulations to study haloes over the entire range of ΛCDM halo masses, from Earth mass to the largest clusters. In this talk, I will present our latest results about how baryons could modify these results for haloes with masses between 10^4 and 10^7 M_sun, below the threshold for galaxy for...
详情 -
2024.11.14
Einstein Probe: starting to reveal a deeper and clearer view of the dynamic X-ray universe [EN]
The Einstein Probe (EP, renamed 天关 in Chinese last week), launched on January 9th, 2024, is a space X-ray observatory of the Chinese Academy of Sciences in collaboration with ESA, MPE and CNES. It is detecting high-energy transient and variable sources in the X-ray band with better sensitivity and spatial resolution by at least one order of magnitude than the other operating wide-field monito...
详情 -
2024.11.14
Highlights of the MeerTime Key Science Project with MeerKAT [EN]
Using a novel new teaching tool that uses a game engine to create an interactive astronomy universe Professor Matthew Bailes will talk about the highlights of the MeerTime program at MeerKAT. These include the discovery and timing of many new pulsars in globular clusters, giant pulse studies, many new pulsar masses, insights from the eclipses of the double pulsar and a tantalising Hellings and ...
详情 -
2024.11.13
Two Bridges in Galaxy Ecosystem: Star – InterStellar Medium Interaction and Observation – Theory Connection [EN]
The increasing sophistication of research and data quality has revealed a complex interplay between the internal and external environments of galaxies. While galaxies are demonstrably connected to their cosmic ecosystems, their interiors are also comprised of diverse components with intricate interactions, forming a "galaxy ecosystem". Stars and the interstellar medium (ISM) are two crucial con...
详情 -
2024.11.08
A study on Kinematical Small-scale Fluctuations Vary with Galaxy Surface Density
Massive galaxies usually observed as symmetric stellar motions and can be fitted well by the commonly used symmetric dynamical models. However, the stellar kinematics of many low-mass galaxies typically contain lots of small patches, causing the stellar second moment of velocity distribution to be non-smooth in small-scales and far from symmetry, we call these patches kinematical small-scale fl...
详情