3 papers
astro-ph.HE2026
Detections of nearly bias-free core shifts with 5-30 as precisions at 8-43 GHz in BL Lacertae
Niu Liu, Jun Yang, Xiaopeng Cheng +7
When a radio jet is partially optically thick in the launching region, its apparent compact core may display frequency-dependent positional shifts. High-precision astrometric measu…
astro-ph.GA2025
Unveiling the Sources of X-ray Luminosity in DESI Galaxy Groups: Insights from the SRG/eROSITA All-Sky Survey
YunLiang Zheng, Xiaohu Yang, Teng Liu +10
We use the first eROSITA all-sky survey (eRASS1) to investigate the contributions of AGN and extended gas to the total X-ray luminosity () of galaxy groups with different halo…
astro-ph.CO2025
Exploring the signature of assembly bias and modified gravity using small-scale clusterings of galaxies
Yirong Wang, Zhongxu Zhai, Xiaohu Yang +1
We apply a halo velocity bias model, , within the Aemulus simulation suite for General Relativity (GR) to investigate its efficacy in identifying the signature of assembly…