简介: |
The extragalactic background light (EBL) from ultra-violet (UV) to far-infrared (far-IR) bands is comprised of the cumulative radiation from all galaxies and active galactic nuclei (AGNs) over the cosmic history. The current measurements of the near-infrared (near-IR) intensity fluctuations suggest an excess in the clustering signal at scales of a few arcminutes compared to the expectations from models of galaxy formation and evolution. This indicates that the EBL may contain faint, extended components missed in ordinary galaxy surveys. In this talk, I will review the possible origins of the anisotropy of near-IR EBL and discuss the potential candidates which can explain this excess.
Bio: Dr. Yan Gong is a theoretical cosmologist and an astronomer/professor in NAOC. He graduated and received his PhD in NAOC in 2010. Then he got a postdoctoral position in University of California, Irvine, and worked for five years on theoretical studies of intensity mapping and extragalactic background light. He joined NAOC in 2015. His research interests include theories of dark matter and dark energy, intensity mapping of atomic and molecular emission lines, and the origins of extragalactic background light. |
