Gregory A. Shields

	Department of Astronomy	RLM 15.220
	Campus mail code: C1400	Office Hours: M 2-3, Tues 2-3, W 1-2
	University of Texas	(512) 471-1402
	Austin, TX 78712	E-mail: shields@astro.as.utexas.edu

Welcome to my homepage. I am the Jane and Roland Blumberg Centennial Professor in Astronomy, and I have been at UT since 1974. I am currently serving as Chairman of the Undergraduate Studies Committee for the Department of Astronomy. My main research interests are Active Galactic Nuclei (AGN) and H II regions. My work is largely theoretical, but I am involved in observing programs with the Hobby-Eberly Telescope and studies using the Sloan Digital Sky Survey. My work on AGN concerns the emission lines, the accretion disk, black holes, and binary QSOs. In recent years I have concentrated on using quasars to explore the relationship between black holes and their host galaxies, on the emitted spectrum of accretion disks, and observational signatures of recoiling black holes in quasars.

The astro-ph posting of our recent paper "Powerful Flares from Recoiling Black Holes in Quasars" (G. A. Shields and E. W. Bonning 2008, arXiv:0802.3873) contains the wrong image for Figure 1. The correct Figure 1 is here, the complete paper with correct figure is here, and an animation of the numerical simulation is here.

In Fall 2008 I will teach AST 381 "Astrophysics of Gaseous Nebulae". This course ....

Follow these links to ANNOUNCEMENTS for AST 301 .

General

Highlights: Current activities and curriculum vitae and publications

Research

Highlights: Active Galactic Nuclei and H II Regions