[Astro] Lunch Talk

[Michael Anderson Jennings]

Hi Everyone,

Reminder about the lunch talk today at 1pm in A113.

Thanks,
Mikey
________________________________
From: Michael Anderson Jennings
Sent: Monday, June 24, 2024 9:16 AM
To: astro at nottingham.ac.uk <astro at nottingham.ac.uk>
Subject: Lunch Talk

Hi Everyone,

This week's lunch talk will be given by Joe Butler, the title and abstract of the talk are below:

Tracing dark matter using intracluster light

The intracluster light (ICL) is the diffuse stellar component of galaxy clusters consisting of stars not bound to any galaxy. Both dark matter (DM) and the ICL can be treated as collisionless particles whose dynamics are simply governed by the cluster potential, which itself is dominantly generated by DM. The possibility therefore arises of using the ICL as a luminous tracer of DM, which we investigate by exploring the 6D phase-space and kinematics of these two components in simulations. We find that unlike DM, ICL consists of many kinematically-distinct populations, which can be separated in phase-space. Although DM and ICL have very different kinematics and radial distributions, we can understand these differences through energy considerations. Finally, we discuss the importance of simulation parameters for inferring the DM profile from ICL profile.


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