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X-ray Variability Spectra of Black Holes rya225 Wed, 09/23/2020 - 12:41 pm

Both stellar mass and supermassive black holes can vary in brightness extremely rapidly, changing by orders of magnitude within hours. This variability gives us a powerful tool to understand the accretion disks around black holes, and the relativistic winds that they can launch. Because the X-ray spectra are made up of multiple complex variable components, the observed variability can be strongly energy dependent. By calculating the variance of X-ray lightcurves as a function of energy, we can build a variance spectrum. These spectra have been used to qualitatively study black hole variability for many years, but are rarely used quantitatively. I will present recent results from an ongoing research program to model variance spectra of compact objects, including a new method for detecting ultra-fast outflows, implications for accretion disk physics and new constraints on AGN feedback.

Zoom recording:  https://uky.zoom.us/rec/share/z8MTXvJhSmbuS3lYhUsiczW67IPyTDUGMYHrCWXbESp8kCbnmy53RMeJyPfQ66oL.H0J1IJ9f7C5H-iS2

Date:
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Location:
Online by Zoom
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Prof. Yates elected a Fellow of the American Physical Society

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saodom0 Wed, 10/26/2016 - 08:25 am
Some Intersections of Art and Science saodom0 Fri, 04/22/2016 - 11:54 am

“Some Intersections of Art and Science”

 Prof. Frank Wilczek, Massachusetts Institute of Technology.

 Public lecture: Thursday, April 28, 7:30 pm, Memorial Hall 

Abstract: There are profound reasons, rooted in the nature of human cognition and perception, why art and science have a lot to offer one another.   I will display some important historical examples of their synergy, and point out some emerging opportunities.  Several striking images are an integral part of the presentation. 

Frank Wilczek is an American theoretical physicist, mathematician, and Nobel laureate.  He is the Herman Feshbach Professor of Physics at Massachusetts Institute of Technology. Along with David Gross and H. David Politzer, Wilczek was awarded the Nobel Prize in Physics (2004) for the discovery of asymptotic freedom in the theory of strong interaction.

Wilczek's lecture is free and open to the general public.   A book signing will follow. 

This event is supported by the Departments of Physics and Astronomy, Mathematics, Statistics, Chemistry, the College of Engineering, the College of Arts and Sciences, the Graduate School, and the Vice President for Research.  The organizers thank the  Dr. J. C. Eaves Undergraduate Excellence Fund in Mathematics and  Milton Huffaker for their generous support. 

 

Date:
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Location:
Memorial Hall
Tags/Keywords:
Ramesh Budhani, Lance De Long and NbSe2 mrfo225 Tue, 11/24/2015 - 11:57 am
What’s Next: Fusing Interests in Undergraduate Research

Computer science and the St. Chad Gospels. Physics and Spanish. Math and international studies. The combination of these don't seem to make a lot of sense, but it is these interests that have shaped the undergraduate career of one UK senior.

trra223 Mon, 08/10/2015 - 09:39 am
Dean Kornbluh Onsite at the Academic Science Building

 

 

Arts & Sciences Dean Mark Lawrence Kornbluh visited the Academic Science Building construction site to discuss its current progress and his excitement for what the facility means for the University of Kentucky. The Academic Science Building is scheduled to open Fall 2016.

 

 

Anonymous (not verified) Tue, 07/28/2015 - 04:36 pm
VIDEO: Twenty-three to be Inducted Into UK Hall of Distinguished Alumni
What makes a university thrive as a community and a center for knowledge?
trra223 Fri, 04/17/2015 - 12:39 pm
Gaines Fellowship Awarded to 12 UK Scholars
The University of Kentucky Gaines Center for the Humanities has chosen 12 outstanding undergraduates as new scholars for the university's Gaines Fellowship Program for the 2015-2016 and 2016-2017 academic years.
trra223 Thu, 03/12/2015 - 12:31 pm
Prominent Female Mathematician to Deliver van Winter Memorial Lecture
Ingrid Daubechies, the first female full professor of mathematics at Princeton and first woman president of the International Mathematical Union, will deliver the 2015 van Winter Memorial Lecture
trra223 Tue, 02/24/2015 - 12:05 pm
What's Next - Student Research, T.J. Flynn

credits: Reveal, University of Kentucky reveal.uky.edu/flynn_tj

Anonymous (not verified) Thu, 12/04/2014 - 01:18 pm
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