Date: Wednesday 07-May-2025
Time: 11:30-12:30 pm
Location: PSC 1136
Speaker: Guochao Sun (Northwestern University)
Title: Timing Cosmic Reionization with the 21 cm and Near-infrared Backgrounds
Abstract: The timeline of cosmic reionization remains uncertain despite sustained efforts to study how the ionizing output of early star-forming galaxies shaped the intergalactic medium. Intensity mapping (IM) offers a promising way to reliably constrain the reionization timeline by measuring the spatial fluctuations in various types of cosmic background radiation. I will introduce our recent investigation into the opportunities, challenges, and prospects for timing the reionization process using the cross-correlation between the HI 21 cm line and the cosmic near-infrared background (NIRB) — two interesting cosmological signals that are now being pursued by the Square Kilometre Array and the SPHEREx experiments, respectively.
Guidelines and format for the CTC Lunch seminars.
Past CTC Lunch seminars.
For other questions, contact the CTC Lunch host: Ankita Bera
SPECIAL ACCOMMODATIONS:
Special accommodations for individuals with disabilities can be made by calling (301) 405-3001. It would be appreciated if we are notified at least one week in advance.
