Niu Liu

Niu Liu Researcher in Astronomy

Research Interests

My research focuses on high-precision astrometry and the realization of celestial reference frames. I am particularly interested in Gaia and VLBI astrometry, links between optical and radio reference frames, and source-related effects that limit positional accuracy, including source structure, variability, and VLBI core shifts. My broader goal is to improve microarcsecond-level astrometric measurements and contribute to a stable, unified celestial reference frame across wavelengths.

Team

Postdoctoral Researchers

Portrait of Nabila Sofia Eryan Putri

Nabila Sofia Eryan Putri

Postdoctoral Researcher

-present

Atmospheric delay modeling

Students

Portrait of Zhiyun Zhang

Zhiyun Zhang (张志云)

Ph.D. Student

-present

Redshift catalog of celestial reference-frame sources

Portrait of Xiaxuan Zhang

Xiaxuan Zhang (张夏轩)

Ph.D. Student

-present

Positional stability of celestial reference-frame sources

Portrait of Dading Zhang

Dading Zhang (张大鼎)

M.Sc. Student

-present

Development of a new nutation model

Opportunities

I welcome inquiries from prospective postdoctoral researchers and graduate students interested in astrometry, celestial reference frames, and related areas. If you are interested in joining the team, please feel free to contact me by email.