Junzheng Fang

Completed a 3-month internship at National Astronomical Observatories (NAOC), Chinese Academy of Sciences (CAS).Detailed responsibilities included:

• Conducted photometric observation of TESS exoplanet candidates with the Xinglong 85-centimeter telescope.
• Analyzed the photometric data to detect transiting signals in light curves, also conducted other subsequent studies of exoplanet properties.

Conducted research under the supervision of Prof. Xing Wei. The main area of my study is coupling of orbital dynamics and tidal resonances. The study applied Laplace's theory to the study of surface tides in rapidly rotating stars and planets. This model can also be used to explain the tides that occur in the atmospheres of stars and planets or in the oceans of neutron stars. The detailed study:

• Focused on the effects of rotation and friction on surface tides, particularly in scenarios where the ratio of the dynamical time-scale to the rotational time-scale is not small, such as in rapidly rotating stars or planets.
• Involved both analytical derivations in asymptotic regimes and numerical calculations to understand the behavior of tidal resonances under fast rotation conditions
• Provided insights into generation of tidal resonances, the impact of rotation speed on tidal frequencies, the role of friction in suppressing resonances, and the influence of fluid layer thickness on tidal behavior at different rotation speeds