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Tianqing Zhang
About Me
Hello there!
I am an observational cosmologist. I use large extragalactic datasets to study the evolution of the universe, nature of dark matter, and dark energy. I use techniques such as are weak gravitational lensing, photometric redshift, etc. If you talk to me, you will probably hear words like PSF, photo-z, LSST, HSC, blah blah blah.
I am Research Assistant Professor at University of Pittsburgh and a LINCC Frameworks research scientist. Previously, I was a graduate student at McWilliams Center for Cosmology, Carnegie Mellon University. I did my undergrad at Duke University and Shanghai Jiao Tong University. I have been passionate about Astronomy since high school.
I am based in Pittsburgh, PA. Sometimes I show up in California.
Outside research, I like to hike, build Astronomy community, and play low-intensity basketball...
I am an observational cosmologist. I use large extragalactic datasets to study the evolution of the universe, nature of dark matter, and dark energy. I use techniques such as are weak gravitational lensing, photometric redshift, etc. If you talk to me, you will probably hear words like PSF, photo-z, LSST, HSC, blah blah blah.
I am Research Assistant Professor at University of Pittsburgh and a LINCC Frameworks research scientist. Previously, I was a graduate student at McWilliams Center for Cosmology, Carnegie Mellon University. I did my undergrad at Duke University and Shanghai Jiao Tong University. I have been passionate about Astronomy since high school.
I am based in Pittsburgh, PA. Sometimes I show up in California.
Outside research, I like to hike, build Astronomy community, and play low-intensity basketball...
Point Reyes, CA
Credit: Jocelyn Zhang
Research
My research studies weak gravitational lensing and utilize statistical and machine learning methods to extract information from large photometric survey dataset such as the Vera R. Observatory's LSST, the Subaru Telescope's Hyper Suprime-Cam (HSC), and Roman Space Telescope's High Latitude Imaging Survey.
Point Spread Function (PSF)
I study how the atmospheric turbulence and optical effect, normal described as the Point Spread Function (PSF), impact weak lensing measurement. Especially, how higher moments of the PSF impact the shear estimation.
Image Simulation
I extensively apply image simulation based on GalSim in my research.
RAIL
I lead the development of Redshift Infrastructure Assessment Layers (RAIL), which is a open-source software package for estimating photometric redshift and supporting photometric redshift research.
Bayesian Weak Lensing Inference
I developed Bayesian weak lensing inference framework to fully marginalize the uncertainty of the photometric redshift distribution of the shear catalog.
Weak Lensing Cosmology
I am involved in the weak lensing working group of the HSC.
Cosmic Proper Motion
I work with Pitt undergrad Sean Maloney on measuring the earth movement using GAIA extragalactic catalogs.Contact
Email: tq96zhang at gmail.com