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SUMMARY:【T. D. Lee Special Colloquium】 From Explosion Mechanisms to th
 e Hubble Tension: Insights from Stellar Explosions
DTSTART;VALUE=DATE-TIME:20260429T060000Z
DTEND;VALUE=DATE-TIME:20260429T070000Z
DTSTAMP;VALUE=DATE-TIME:20260429T101000Z
UID:indico-event-4978@indico-tdli.sjtu.edu.cn
DESCRIPTION:Speakers: Xiaofeng Wang (Tsinghua University)\n\nHost: Prof. D
 ong Lai (赖东)Abstract: Stellar explosions provide a powerful laborator
 y for probing both massive star physics and the fundamental properties of 
 the Universe. In this talk\, I will present recent progress on two major o
 pen problems: the explosion mechanism of core-collapse supernovae and the 
 origin of the Hubble tension. For core-collapse supernovae\, I will show t
 hat very early-time\, multi-band observations provide critical constraints
  on the explosion physics. Observations of supernova explosions arising fr
 om nearby red supergiants such as SN 2023ixf and SN 2024ggi reveal atypica
 l temperature evolution during the initial shock breakout phase\, challeng
 ing standard models. In addition\, we report the EP detections of diverse 
 X-ray flashes events associated with type Ic supernovae\, pointing to a wi
 der diversity of explosion of Wolf–Rayet stars. On cosmological scales\,
  I will discuss the role of Type Ia supernovae in the Hubble tension. Our 
 recent analysis indicates that local metallicity affects the inferred Hubb
 le constant with a significance at ~4–5σ level. These results highlight
  the importance of early-time observations and environmental dependencies 
 in using stellar explosions as precision probes of astrophysics and cosmol
 ogy.Biography: Xiaofeng Wang is a Professor in the Department of Physics 
 at Tsinghua University. He obtained his B.S. and Ph.D. degrees in Astronom
 y from Beijing Normal University\, and subsequently conducted postdoctoral
  research at the NAOC\, University of California\, Berkeley\, and Texas A&
 M University.  His research focuses on supernovae\, their applications in
  cosmology\, and time-domain astronomy. His work has been recognized twice
  as one of the “Top Ten Advances in Chinese Astronomy.”He has authored
  or co-authored over 240 SCI-indexed publications\, including papers in Sc
 ience\, Nature\, and their sister journals\, with a total of about 16\,000
  citations. He has been awarded the National Science Fund for Distinguishe
 d Young Scholars and selected for the National High-Level Talent Program. 
 His honors include the Huang Shou-Shu Award of the Chinese Astronomical So
 ciety and the Tencent Xplorer Prize. \n\nhttps://indico-tdli.sjtu.edu.cn/
 event/4978/
LOCATION:Tsung-Dao Lee Institute/N6F-N600 - Lecture Room (Tsung-Dao Lee In
 stitute)
URL:https://indico-tdli.sjtu.edu.cn/event/4978/
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