معرفی
David Turnshek is a Professor in the Department of Physics & Astronomy at the University of Pittsburgh, affiliated with the Dietrich School of Arts and Sciences. His research focuses on Quasi-Stellar Objects (QSOs), particularly Broad Absorption Line (BAL) QSOs and damped Lyman-Alpha systems, using observations from the Hubble Space Telescope and ground-based telescopes. He investigates QSOs as probes of galaxies and the intergalactic medium, including their emission-line spectra, host galaxies, and quiescent brightness variations. His work also involves photoionization modeling, radiative transfer calculations, and the study of intervening absorption-line systems to understand galaxy formation and evolution.
Turnshek has held prior appointments at the University of Pittsburgh (1981–84), University of Cambridge (1982), and the Space Telescope Science Institute (1984–88). He actively participates in outreach and collaborates on projects involving gravitational lensing and the properties of neutral hydrogen in the universe. His research emphasizes observational constraints on absorber scales and the role of damped Lyman-Alpha systems in low-redshift environments.
