3 papers
astro-ph.HE2026
Even a precessing clock is right twice per orbit -- The super-periods of eRO-QPE2 and challenges for quasi-periodic eruption orbital models
R. Arcodia, G. Miniutti, J. Chakraborty +25
We present OC (``observed minus calculated'') timing analysis of the quasi-periodic eruption (QPE) source eRO-QPE2 with a multi-mission X-ray campaign, which includes 32 observe…
astro-ph.SR2025
Four ages of rotating stars in the rotation--activity relationship and gyrochronology
Huiqin Yang, Jifeng Liu, Roberto Soria +4
Gyrochronology and the rotation--activity relationship are standard techniques used to determine the evolution phase.The mismatch in the definition of the evolutionary phases has s…
astro-ph.IM2025
Deep Learning and LLM-based Methods Applied to Stellar Lightcurve Classification
Yu-Yang Li, Yu Bai, Cunshi Wang +4
Light curves serve as a valuable source of information on stellar formation and evolution. With the rapid advancement of machine learning techniques, it can be effectively processe…