COLLOQUIUM Daniela Galarraga-Espinosa, IPMU Japan

Filaments: from the large-scale structure to the CGM

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 cosmic filaments evolved since z=4. In the second part of my talk, I will zoom into CGM scales to show how the smaller-scale filaments (or streams) influence the star-formation activity of galaxies at cosmic noon. I will conclude on the importance of understanding multi-scale filaments and discuss prospects for observing these structures with current and future multi-wavelength datasets.

Talk in presence and via Zoom:

https://uni-hamburg.zoom.us/j/66006535328?pwd=aGkrSjJIYmZjK0VpYlpGL0ZrdHg2UT09