1 citations · 1 across the 1 of their papers we have counts for
2 papers
astro-ph.IM2025★ 1 cited
Determining the observation epochs of star catalogs from ancient China using the generalized Hough transform method
Boliang He, Yongheng Zhao
Ancient China recorded a wealth of astronomical observations, notably distinguished by the inclusion of empirical measurements of stellar observations. However, determining the pre…
astro-ph2001
Variability of Soft X-ray Spectral Shape in Blazars Observed by ROSAT
Linpeng Cheng, Yongheng Zhao, Janyan Wei
In paper 1 (Cheng et al. 2001) we have shown that the soft X-ray spectra of two types of Seyfert 1 galaxies statistically vary differently with increasing intensity. In order to un…