首页
-
2025.11.26
Free Floating Planets and stellar binary formation
Planet formation is far from understood. Observations of Free Floating Planets (FFPs), on the one hand, and of planets in tight stellar binaries, on the other, are challenging our leading (Core Accretion) scenario for planet formation strongly. This classical framework requires a prolonged epoch of gentle accumulation of small solids into ever larger bodies, yet both FFPs and planets in binarie...
详情 -
2025.11.27
Icy ocean worlds -- from the surface to the interior
Icy moon oceans are promising targets in the search for extraterrestrial life, but characterizing their internal dynamics remains challenging, as most oceanic processes are obscured from direct observation by the overlying ice shell. In contrast, the ice shell itself is relatively accessible to observation and may serve as a window into the ocean below. As the only liquid layer in the system, t...
详情 -
2025.11.25
SQ-A: A Collision Triggered Starburst in Intra-Group Medium of Stephan's Quintet
SQ-A is a starburst in the intra-group medium (IGrM) of the famous compact group Stephan's Quintet (SQ). There has been a long controversy on whether SQ-A is triggered by a collision of two gas systems, one is associated with the IGrM (v~6900 km/s) and another with the intruder galaxy NGC 7318b (v~6000 km/s). The counter argument against the collisional scenario is based on the fact that in a l...
详情 -
2025.11.07
New Insights into the Progenitors of Core-Collapse Supernovae
Core-collapse supernovae (CCSNe) are spectacular explosions of dying massive stars and play significant roles in various astrophysical processes. It is a key topic, and still a major difficulty, to determine the progenitors of different types of CCSNe. In this talk, I will describe the general understanding on this topic from past studies and introduce our recent work in this field on a wide ra...
详情 -
2025.10.28
A puzzle solved: the world is flat
I will report the solution to a puzzle of more than 40 years' standing: Why is the lower limit on the mass of the Local Group of galaxies inferred from the Timing Argument of Kahn & Woltjer (1959), larger than the upper limit implied by the almost unperturbed Hubble flow which Sandage (1986) measured for nearby galaxies.BIOProf. Simon D. M. White is the Emeritus Director at the Max-Planck-Insti...
详情 -
2025.10.27
57 Years of Pulsar Research
This talk outlines the personal story of my long career in pulsar research. It began shortly before publication of the first pulsar discovery by Antony Hewish, Jocelyn Bell, et al. In 1968, and is still continuing. I have been involved in many aspects of pulsar research over the years. This talk emphasizes my role in the development of new receiver systems for the Parkes 64m radio telescope in ...
详情 -
2025.10.27
Connecting protoplanetary disk observations with planet formation modeling
Structures such as gaps and rings in ALMA observations of protoplanetary disks have long been hailed as signposts of planet formation. However, it is still not clear how common such substructures are, when they become apparent in disks and how they are linked to the formation of planets. In this talk I will describe the latest insights on the commonality and evolution of substructures in disks,...
详情 -
2025.10.21
LOFAR Surveys: A New Window on the Universe
The Low-Frequency Array (LOFAR) is a pan-European radio telescope with immense data collection and processing capabilities, making it an unprecedented and powerful instrument for conducting the deepest and widest radio surveys at the lowest frequencies accessible from the ground. Over recent years, we have addressed key issues related to the analysis and calibration of radio data, allowing us t...
详情 -
2025.10.23
稀释制冷机及其关键技术研究进展
稀释制冷机是一种能够连续产生10 mK极低温度的制冷系统，广泛应用于凝聚态物理、天文探测和量子计算等领域。本报告将介绍团队在全国产化10 mK脉冲管预冷稀释制冷机的最新进展。首先将介绍全国产化的4 K脉冲管制冷机，其制冷功率为1.4 W @4.2 K，40 W @45 K，最低温度可降至2.15 K，非常适合用于液化3He，并介绍其在1K制冷机中的应用。其次将介绍团队研发的新型同轴对流热开关、以及新型气隙热开关，最大开关比可达1000。最后针...
详情 -
2025.10.17
Galactic magnetized halo related to the eROSITA Bubbles
The large-scale structures such as Fermi Bubbles and eROSITA Bubbles provide a unique opportunity to study our Milky Way. However, the nature and origin of these large structures are still under debate. In this talk, I will present the identification of several kpc-scale magnetized structures based on their polarized radio emission and their gamma-ray counterparts, which can be interpreted as t...
详情