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ASD Colloquium (Hybrid)



Presence and Power of Active Galactic Nuclei in Post-Starburst Galaxies
Lauranne Lanz (Department of Physics, The College of New Jersey)

While active galactic nuclei (AGN) and their feedback are often invoked as a means by which galaxies can transition from actively star forming to quiescence, the importance of this activity and its frequency in driving the transition remains a major open question in galaxy evolution. Post-starburst galaxies, caught within a Gyr of star formation activity, provide an important laboratory for searching for signatures of AGN feedback. I will present our work using Chandra and XMM observations to constrain the frequency and luminosity of AGN in post-starburst galaxies. While a high fraction of our galaxy sample is detected at X-ray wavelengths, we typically have very few photons per source, with indications that the emission mechanism may vary from source to source. As such, we developed a forward-modeling methodology to constrain the properties of this emission even on the basis of only a handful of counts. I will discuss both the forward modeling methodology and the implication of the AGN luminosities on the role of AGN activity in post-starburst galaxies.

Date March 14, 2023
Start/End Time 03:45 PM - 05:00 PM
Location B34, W150 and Teams
Contact Scott Noble
Email Address
Event Type Seminars/Colloquia
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