Event

Intensity mapping has emerged as a promising tool to probe the high-redshift universe by measuring the aggregate emission without resolving individual sources, complementing the information from conventional galaxy surveys. In this talk, I will discuss my works on a range of cosmological / astrophysical applications of intensity mapping. First, I will introduce a theoretical framework to quantify the performance of large-scale structure probes (intensity mapping and galaxy survey),  which can serve as a tool to optimize the design for future cosmological surveys. Next, I will talk about line intensity mapping, which probes the 3D large-scale structure by mapping the emission of a particular spectrum line. Then, I will describe my latest work on  CIBER, a sounding rocket experiment designed to probe the near-IR extragalactic background light (EBL). We use stacking analysis with CIBER data to study intra-halo light, the emission from the stars tidally stripped from their parent galaxies which ultimately reside in the surrounding dark matter halo. Finally, I will conclude with the upcoming all-sky spectral survey, SPHEREx, and show the possibility to constrain the (redshift dependent) EBL spectrum by cross-correlating SPHEREx with spectroscopic galaxy catalogs.

https://upenn.zoom.us/j/91921489150?pwd=d3JCVmM0MGR5WTNYTFp2Q3VJNXF3UT09

Meeting ID: 919 2148 9150

Passcode: 414581