3 papers
astro-ph.GA2026
The Broken Similarity: Sinking and Merging of Dark Matter Subhalos Across Hierarchical Levels
Wenkang Jiang, Jiaxin Han, Kun Xu +6
We investigate hierarchical mergers among subhalos within a CDM simulation using the HBT+ subhalo finder. Unlike previous methods, HBT+ tracks subhalo evolution across hierarch…
astro-ph.CO2025
Dependence of halo properties on central-satellite magnitude gaps through weak lensing measurements
Mingtao Yang, Jiaxin Han, Wenting Wang +9
The magnitude gap between the central and satellite galaxies encodes information about the mass accretion history of a dark matter halo, and serves as a useful observational probe…
astro-ph.HE2025
Modeling fast X-ray variability around an accreting black hole
Yejing Zhan, Bei You, Adam Ingram +2
X-ray inter-band time lags are observed during the outbursts of black hole X-ray binaries (BHXRBs). Timing analysis of fast variability in low Fourier frequency bands shows that hi…