Cheng Li

Anisotropic Secondary Bias of Dark Matter Haloes in a $Λ$CDM Universe

Qinglin Ma, Cheng Li

Secondary bias is the dependence of halo clustering on properties beyond halo mass. Using the $z=0$ TNG300-1-Dark simulation, we study anisotropic secondary bias (ASB): the variation of secondary bias with direction relative to the halo major axis. We first use ordinary, orientation-averaged …

Kimi K3: Open Frontier Intelligence

Kimi Team, Tongtong Bai, Yifan Bai, Yiping Bao et autres

We introduce Kimi K3, a 2.8T parameter Mixture-of-Experts model with 104 billion activated parameters, native vision capabilities, and a 1-million-token context window. Kimi K3 is built on Kimi Delta Attention and Attention Residuals, which improve information flow across sequence length and model …

Evidence for Azimuthally Anisotropic MgII Absorption around DESI Luminous Red Galaxies

Xuanyi Wu, Cheng Li

We use luminous red galaxies (LRGs) and background quasar spectra from DESI DR1 to measure the mean MgII equivalent width around massive quiescent galaxies as a function of projected radius and azimuth relative to the projected major axis. Our forced-measurement approach assigns …

cn (code pays fourni par la source)