PIRSA ID: 22100140
Série : Cosmology and Gravitation
Event Type: Seminar
Domaine(s) scientifique(s) : Cosmology
Date de fin : 2022-10-18
Speaker(s): Gabriela Sato-Polito Gabriela Sato-Polito Institute for Advanced Study (IAS) - School of Natural Sciences (SNS)
Cosmology and astrophysics with the extragalactic light: background and fluctuations
Abstract: The aggregate light emitted by all extragalactic sources can be measured either as an absolute intensity or through its spatial fluctuations; these are known as line-intensity mapping (LIM) when a particular line transition is targeted. I will discuss how these measurements can be used both to learn about galaxy evolution and to investigate the presence of more speculative sources of radiation, such as decaying dark matter. I will then discuss the prospects of LIM to probe the interstellar and intergalactic medium, as well as structure on large scales. In particular, I will focus on the joint information across different line transitions and across different tracers, such as galaxies and extragalactic CMB foregrounds.
Zoom Link: https://pitp.zoom.us/j/94959896129?pwd=QjhzWS9rczdBNGFndUhhNDZ1K1FLQT09