Associate Dean, University Of Arizona, Distinguished Professor discussed on Talk Nerdy

Talk Nerdy


All right, guys. Let's get back to the show. So I've talked to quite a few people on talk nerdy up to this point. Because we're in the like two hundred thirty something forty something numbers of episodes now. And when I talk to people about black holes, for example, I find that. There are similarities across the conversations. But I also find that they're very unique perspectives from different people depending on their field of astronomy. So you, you know, you're currently the distinguished professor in the department of astronomy at the university of Arizona, what type of astronomer are you like, obviously, you are focused on cosmology. But are there I've talked to let's say string theorists, for example of fairy different views on black home. Then, you know, people who are studies of Einstein's equations and things like that. So I mean first of all truth in advertising for a couple of years. I've been in associate dean, so I'm sort of administrative droid for half of my time. So my mom, the pleasurable astronomy part and using telescopes is less than it used to be. But I that makes me enjoy it more, actually. Absolutely. And it it means that you get to make bigger decisions about funding and the people who get to tell these important stories into this important research. So I want to just update right here in my notes that you're the associate dean R I. So yes, so I'm an observer. And I I. Cut my teeth. I'm Brett, and I did my undergrad and grad work in London and Edinburgh. And so I've been an optical infrared observational astronomer, and I got taken by the these very luminous. Oh, we're talking about black holes in their range of masses. So the extreme ones are the are billion or more solar masses? And they're the centers of large galaxies. And the most extreme of them are the ones that are showing down on gas and stars and emitting huge amounts of energy. So that that's another little paradox built into black holes. People think well, they're dark nothing can escape. So how do you see a dark thing? Well, many of them are dark and hard to detect but a small fraction of three percent are very active because they're they're feeding their fuelling through an accretion disk. So it sort of matters falling onto them going into this Equatorial disk and then funding into the black hole, and they end up being incredibly bright. So when they do that, they become quasars this one of the terms for these. The active black holes. And that's an extraordinary thing. So I earlier in my career I was drawn to that. Because what a quasar is is it's a nucleus of a galaxy. It's a the region around a billion solar mass black hole where energy is being pumped out because of Chretien power and shines up two thousand times brighter than the entire galaxy. That contains it so I like to use the analogy of matching you're.

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