Xin Liu

Assistant Professor

University of Illinois at Urbana-Champaign

United States

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About

Dr. Xin Liu is an Assistant Professor at the University of Illinois at Urbana-Champaign, USA. His research focuses on astrophysics, particularly in the study of supermassive black holes, active galactic nuclei, and photometric redshift estimation methodologies. He has contributed to notable works, including investigations of binary supermassive black holes and the application of deep learning techniques in astronomical surveys.

Articles (20)

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2025

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2021

Collaborators (12)

Grant Merz

University of Illinois Urbana–Champaign

UNITED STATES

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Yue Shen

University of Illinois at Urbana-Champaign

UNITED STATES

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Christopher Morgan

Professor

United States Naval Academy

UNITED STATES

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Kayhan Gultekin

Assistant Professor

University of Michigan

UNITED STATES

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Volodymyr Kindratenko

University of Illinois at Urbana-Champaign

UNITED STATES

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Nadia Zakamska

Professor

Johns Hopkins University

UNITED STATES

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Reese Wilkinson

University of Sussex

UNITED KINGDOM

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Brad Tucker

Australian National University

AUSTRALIA

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David Rupke

Associate Professor

Rhodes College

UNITED STATES

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Raphael Shirley

Max Planck Institute for Extraterrestrial Physics

GERMANY

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Adi Foord

Assistant Professor

University of Maryland Baltimore County

UNITED STATES

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Kevin Whitley

University of Michigan

UNITED STATES

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Xin Liu

Research Interests

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About

Articles (20)

Frequency and Abundance of Binary Supermassive Black Holes from Optical Variability Surveys (Fabulovs): Hubble Space Telescope Imaging of Radial-velocity-selected Binary Candidates

Varstrometry for Off-nucleus and Dual Sub-Kpc AGN (VODKA): A Mix of Singles, Lenses, and True Duals at Cosmic Noon

Varstrometry for Off-nucleus and Dual Sub-Kpc AGN (VODKA): Long-slit Optical Spectroscopic Follow-up with Gemini/GMOS and Hubble Space Telescope/STIS

DeepDISC-photoz: Deep Learning-Based Photometric Redshift Estimation for Rubin LSST

VODKA-JWST: Synchronized Growth of Two Supermassive Black Holes in a Massive Gas Disk? A 3.8 kpc Separation Dual Quasar at Cosmic Noon with the NIRSpec Integral Field Unit

A Systematic Search for Candidate Supermassive Black Hole Binaries Using Periodic Mid-infrared Light Curves of Active Galactic Nuclei

VODKA-JWST: A 3.8 kpc Dual Quasar at Cosmic Noon in a Powerful Starburst Galaxy with JWST/MIRI Integral Field Unit

PICZL: Image-based photometric redshifts for AGN

High-quality Extragalactic Legacy-field Monitoring (HELM) with DECam

A close quasar pair in a disk–disk galaxy merger at z = 2.17

Varstrometry for Off-nucleus and Dual Subkiloparsec AGN (VODKA). SDSS J1608+2716: A Subarcsecond Quadruply Lensed Quasar at z = 2.575

Detection, instance segmentation, and classification for astronomical surveys with deep learning (DeepDISC): Detectron2 implementation and demonstration with hyper suprime-cam data

Varstrometry for Off-nucleus and Dual Sub-kiloparsec Active Galactic Nuclei (VODKA): Very Long Baseline Array Searches for Dual or Off-nucleus Quasars and Small-scale Jets

Investigating the Accretion Nature of Binary Supermassive Black Hole Candidate SDSS J025214.67−002813.7

Dwarf AGNs from Optical Variability for the Origins of Seeds (DAVOS): Insights from the dark energy survey deep fields

AGNet: weighing black holes with deep learning

Dwarf AGNs from variability for the origins of seeds (DAVOS): Intermediate-mass black hole demographics from optical synoptic surveys

A characteristic optical variability time scale in astrophysical accretion disks

Do LIGO/Virgo Black Hole Mergers Produce AGN Flares? The Case of GW190521 and Prospects for Reaching a Confident Association

A hidden population of high-redshift double quasars unveiled by astrometry

Collaborators (12)

Grant Merz

Yue Shen

Christopher Morgan

Kayhan Gultekin

Volodymyr Kindratenko

Nadia Zakamska

Reese Wilkinson

Brad Tucker

David Rupke

Raphael Shirley

Adi Foord

Kevin Whitley

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