CTC Seminar for 2023-10-25

Series: CTC Seminar
Date: Wednesday 25-Oct-2023
Time: 11:30-12:30 pm
Location: PSC 1136
Speaker: Nhut Truong (NASA GSFC)
Title: Probing the effects of SMBH feedback on the CGM with Line Emission Mapper (LEM)

Abstract: The circumgalactic medium (CGM) plays an essential role in the formation and evolution of galaxies. It serves as the interface where inflows of cosmic gas and outflows driven by galactic feedback occur. Supermassive black holes (SMBH) are the power engine of AGN feedback, generating large-scale outflows, which subsequently deposit mass, energy, and metals into the CGM significantly altering its physical state. However, probing these SMBH-CGM interactions is proven challenging with current CCD-based X-ray telescopes. In this talk, I’ll present a forecast study on the prospects of the “Line Emission Mapper” (LEM) mission, which is currently planned as a proposal for a NASA Probe mission. LEM is a microcalorimeter-based X-ray telescope with large field of view (30’x30’) and advanced spectral resolution (~2 eV). Based on analysing data from current cosmological simulations, including IllustrisTNG, EAGLE, and SIMBA, I’ll highlight LEM capabilities in probing key effects of SMBH feedback on the CGM through the observation of prominent emission lines like OVIIf, OVIII, and FeXVII.

Guidelines and format for the CTC Lunch seminars.
Past CTC Lunch seminars.
For other questions, contact the CTC Lunch host: Matt Nixon


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.


Directions and information about parking can be found here.

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