Astronomy Colloquium for 2023-04-26

Series: Astronomy Colloquium
Date: Wednesday 26-Apr-2023
Time: 16:05-17:00 (4:05-5:00 pm)
Location: ATL 2400
Speaker: Dr. Richard Mushotzky (UMD)
Title: A Journey of 50 years and a Few Gigaparsecs-How Recent X-ray Results Have Changed Our Understanding of AGN and a Peek at the Future

Since the dawn of x-ray astronomy 60 years ago, finding and studying active galaxies (accreting supermassive black holes) has been a prime area of study. I will very briefly summarize the events of the last 5 decades concentrating on my own research. Over the last decade a major change in our understanding of these objects have been enabled y the first sensitive hard (E> 10 keV) all sky x-ray surveys, followed up by detailed observations across the entire electromagnetic spectrum. I will briefly summarize some of a major changes in our understanding of the nature of the host galaxies, the relationship to star formation, black hole mass, AGN fueling, and the implications for the theoretically predicted effect of feedback at low redshifts. I will examine the next steps in our understanding, stressing the soon to be launched XRISM x-ray spectroscopy mission and discuss the more distant future, focusing on the AXIS x-ray probe concept.

In-person colloquia are usually preceded by espresso and ice cream at 1:45 pm outside room PSC 1150 and are followed by an informal reception at 5:15 pm in that room. Anyone interested in talking with the speaker, or being added to the colloquium announcement email list, should contact the colloquium organizer Dr. Leslie Sage. Lunch will normally be reserved for the speaker to talk to graduate students. Anyone asking a question during a talk is asked to raise their hand and be acknowledged before speaking. Contact Dr. Leslie Sage for details.

Colloquium Organizer: Dr. Leslie Sage


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.

This page was automatically generated on: 19-Apr-2023.