I will present a characterisation of filamentary structures at different scales, from the large-scale cosmic filaments forming the skeleton of the cosmic web, to the smaller-scale filaments playing a crucial role in the circum-galactic medium (CGM). Using the outputs of recent large-scale hydro-dynamical simulations, I will focus on some fundamental properties of filaments at z=0, and show how...
Recent analysis involving the measurement of the kinetic Sunyaev-Zel’dovich (kSZ) effect and the stacking of optically selected eROSITA clusters have indicated that AGN feedback may be more efficient in lower mass haloes than previously thought, highlighting the need for multiple, orthogonal, probes of large scale structure that trace to the distribution of baryonic matter at different halo...
Accurate constraint on the total mass of the Milky Way (MW) is crucial yet remains significantly uncertain after decades of efforts.
In this study, we employ a novel data-driven dynamical modeling method, the empirical distribution function (\empdf), to refine estimates of the Milky Way mass profile using a large sample of halo stars from the Dark Energy Spectroscopic Instrument Milky Way...
As a key component of the Universe’s large-scale structure, the kinematics of cosmic filaments has long been debated. Classical theory holds that filaments exhibit multipolar flows without a net, coherent rotation. However, two independent studies in 2021—one simulation-based and one observational—reported detections of filament rotation, sparking broad discussion in the community.
(1) Using...
As a component of the cosmic web, filaments are important for us to understand the formation of the large scale structure.
In this work, we study the influence of angular momentum, filament growth history, and cosmic expansion on filament density profiles.
We present two models characterizing dark matter filament growth implementing the stretch of filaments, the power law growth model (the...
