May 26 – 30, 2025
Shanghai Jiao Tong University
Asia/Shanghai timezone

The dynamical boundaries in dark matter halos: A study using UMAP

May 27, 2025, 4:35 PM
30m
C204, Student Center (Shanghai Jiao Tong University)

C204, Student Center

Shanghai Jiao Tong University

800 Dongchuan Road, Shanghai

Speaker

Susmita Adhikari (Indian Institute of Science Education and Research, Pune)

Description

Dark matter halos are complex evolving objects. In this talk I will discuss a study of the internal structures of dark matter halos using clustering algorithms in higher dimensional phase space, to see if they can pick up dynamical structures that are agnostic of pre-defined boundaries in the dark matter halos. We use the UMAP algorithm to visualize these distinct structures and find that the current halo structure encodes information about halo accretion history.

Primary author

Susmita Adhikari (Indian Institute of Science Education and Research, Pune)

Presentation materials