GR
Gordon T. Richards
astro-phastro-ph.GAastro-ph.COastro-ph.HEastro-ph.IMastro-ph.EPastro-ph.SRcs.AIcs.LG
On Valency
published · living versionsW_qhcacmuz·v1 · currentpublished
The Sloan Digital Sky Survey Reverberation Mapping Project: Technical Overview
with Yue Shen, W. N. Brandt, Kyle S. Dawson, Patrick B. Hall +34
1 version
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Preprints & journals
230 papers in the corpus · 1931–2026AGNFormer I: Reconstruction of AGN spectra using a probabilistic transformer model2607.19640v1 · Benedict L. Rouse, Franz E. Bauer, Tomasz R'oża'nski et al.2026 · 0 citationsarXiv
AGILE: an end-to-end Rubin-LSST simulation of AGNs, galaxies, and stars I. Software description and first data release2603.15729v1 · A. Viitanen, A. Bongiorno, I. Saccheo et al.2026 · 0 citationsA&A 710, A56 (2026)
The X-ray properties of the most luminous quasars with strong emission-line outflows2602.06793v1 · Anastasia Shlentsova, Bartolomeo Trefoloni, Matilde Signorini et al.2026 · 1 citationarXiv
Predicting Quasar Counts Detectable in the LSST Survey2512.08654v1 · Guodong Li, Roberto J. Assef, W.N. Brandt et al.2025 · 2 citationsarXiv
Scalable and Robust Multiband Modeling of AGN Light Curves in Rubin-LSST2511.21479v2 · Weixiang Yu, John J. Ruan, Colin J. Burke et al.2025 · 3 citationsarXiv
Integral Signatures of Activation Functions: A 9-Dimensional Taxonomy and Stability Theory for Deep Learning2510.08456v1 · Ankur Mali, Lawrence Hall, Jake Williams et al.2025 · 0 citationsarXiv
VAR-PZ: Constraining the Photometric Redshifts of Quasars using Variability2509.13308v2 · S. Satheesh-Sheeba, R. J. Assef, T. Anguita et al.2025 · 0 citationsA&A 708, A121 (2026)
Early Stages of Dusty Tori: The First Infrared Spectra from a Highly Multiscale Quasar Simulation2509.09770v2 · Jaeden Bardati, Philip F. Hopkins, Gordon T. Richards2025 · 1 citationarXiv
Balmer Absorption in Iron Low-Ionization Broad Absorption Line Quasars2509.07611v1 · Karen M. Leighly, Sarah C. Gallagher, Hyunseop Choi et al.2025 · 3 citationsarXiv
Examining AGN UV/Optical Variability Beyond the Simple Damped Random Walk. II. Insights from 22 Years Observations of SDSS, PS1 and ZTF2508.12076v1 · Weixiang Yu, Gordon T. Richards, John J. Ruan et al.2025 · 8 citationsarXiv
Luminous Mid-IR Selected Obscured Quasars at Cosmic Noon in SDSS Stripe82 II: Spectroscopic Diversity and Broad H Emissions2508.02792v1 · Ben Wang, Yuzo Ishikawa, Joseph F. Hennawi et al.2025 · 0 citationsarXiv
Gemini Near Infrared SpectrographDistant Quasar Survey: the Chandra View2507.22272v1 · Andrea Marlar, Ohad Shemmer, Michael S. Brotherton et al.2025 · 0 citationsarXiv
Luminous Mid-IR Selected Type-2 Quasars at Cosmic Noon in SDSS Stripe82 I: Selection, Composite Photometry, and Spectral Energy Distributions2501.14026v2 · Ben Wang, Joseph F. Hennawi, Zheng Cai et al.2025 · 4 citationsarXiv
[OIII] emission in z=2 quasars with and without Broad Absorption Lines2406.11968v1 · Matthew J. Temple, Amy L. Rankine, Manda Banerji et al.2024 · 12 citationsMNRAS 532, 424-437 (2024)
Investigating the Origin of the Absorption-Line Variability in Narrow-Line Seyfert 1 Galaxy WPVS 0072405.06027v1 · Kaylie S. Green, Sarah C. Gallagher, Karen M. Leighly et al.2024 · 13 citations2023, ApJ, 953, 186
Gemini Near Infrared Spectrograph -- Distant Quasar Survey: Rest-Frame Ultraviolet-Optical Spectral Properties of Broad Absorption Line Quasars2404.12343v1 · Harum Ahmed, Ohad Shemmer, Brandon Matthews et al.2024 · 5 citationsarXiv
How does the radio enhancement of broad absorption line quasars relate to colour and accretion rate?2402.18623v1 · J.W. Petley, L. K. Morabito, A. L. Rankine et al.2024 · 11 citationsarXiv
The Physical Properties of Low Redshift FeLoBAL Quasars. IV. Optical-Near IR Spectral Energy Distributions and Near-IR Variability Properties2402.07855v2 · Karen M. Leighly, Hyunseop Choi, Michael Eracleous et al.2024 · 7 citationsarXiv
Probing the structure of the lensed quasar SDSS J1004+4112 through microlensing analysis of spectroscopic data2310.11212v1 · C. Fian, J. A. Munoz, R. For'es-Toribio et al.2023 · 10 citationsarXiv
A disc wind model for blueshifts in quasar broad emission lines2309.14434v1 · James H. Matthews, Jago Strong-Wright, Christian Knigge et al.2023 · 23 citationsMNRAS 526, pp.3967-3986 (2023)
The LSST AGN Data Challenge: Selection methods2307.04072v1 · \DJor\dje V. Savi'c, Isidora Jankov, Weixiang Yu et al.2023 · 17 citationsarXiv
No redshift evolution in the rest-frame UV emission line properties of quasars from z=1.5 to z=4.02307.02962v1 · Matthew Stepney, Manda Banerji, Paul C. Hewett et al.2023 · 12 citationsarXiv
The most luminous blue quasars at 3.0<z<3.3 -- III. LBT spectra and accretion parameters2305.07699v1 · Bartolomeo Trefoloni, Elisabeta Lusso, Emanuele Nardini et al.2023 · 19 citationsarXiv
Gemini Near Infrared Spectrograph -- Distant Quasar Survey: Augmented Spectroscopic Catalog and a Prescription for Correcting UV-Based Quasar Redshifts2304.09964v1 · Brandon M. Matthews, Cooper Dix, Ohad Shemmer et al.2023 · 14 citationsarXiv
Shedding New Light on Weak Emission-Line Quasars in the C-H Parameter Space2304.04783v1 · Trung Ha, Cooper Dix, Brandon M. Matthews et al.2023 · 13 citationsarXiv
Infrared spectroscopic confirmation of z~2 photometrically-selected obscured quasars2304.02085v1 · Yuzo Ishikawa, Ben Wang, Nadia L. Zakamska et al.2023 · 6 citationsarXiv
Gemini Near Infrared Spectrograph - Distant Quasar Survey: Prescriptions for Calibrating UV-Based Estimates of Supermassive Black Hole Masses in High-Redshift Quasars2304.02142v1 · Cooper Dix, Brandon Matthews, Ohad Shemmer et al.2023 · 8 citationsarXiv
Microlensing of the broad emission line region in the lensed quasar J1004+41122302.11930v1 · Damien Hutsem'ekers, Dominique Sluse, \DJor\dje Savi'c et al.2023 · 16 citationsA&A 672, A45 (2023)
Testing AGN outflow and accretion models with CIV and HeII emission line demographics in z=2 quasars2301.02675v2 · Matthew J. Temple, James H. Matthews, Paul C. Hewett et al.2023 · 48 citationsMNRAS 523, 646 (2023)
The Properties of Low-Redshift FeLoBAL Quasars: III. The Location and Geometry of the Outflows2208.02834v1 · Hyunseop Choi, Karen M. Leighly, Collin Dabbieri et al.2022 · 18 citationsarXiv
Kpc-scale Radio Structure in Radio-Quiet QSOs2207.13792v1 · Trevor V McCaffrey, Amy E Kimball, Emmanuel Momjian et al.2022 · 10 citationsarXiv
The Physical Properties of Low-Redshift FeLoBAL Quasars: II. The Rest-Frame Optical Emission Line Properties2205.12946v1 · Karen M. Leighly, Hyunseop Choi, Cora DeFrancesco et al.2022 · 18 citationsarXiv
Can X-ray Observations Improve Optical-UV-based Accretion-Rate Estimates for Quasars?2203.16671v1 · Andrea Marlar, Ohad Shemmer, Michael S. Brotherton et al.2022 · 4 citationsarXiv
The Physical Properties of Low Redshift FeLoBAL Quasars. I. Spectral Synthesis Analysis of the BAL Outflows using 2203.11964v1 · Hyunseop Choi, Karen M. Leighly, Donald M. Terndrup et al.2022 · 36 citationsarXiv
Connecting Low- and High-Redshift Weak Emission-Line Quasars via HST Spectroscopy of Ly Emission2203.03817v1 · Jeremiah D. Paul, Richard M. Plotkin, Ohad Shemmer et al.2022 · 15 citationsApJ 929 78 (2022)
Examining AGN UV/optical Variability Beyond the Simple Damped Random Walk2201.08943v2 · Weixiang Yu, Gordon T. Richards, Michael S. Vogeley et al.2022 · 64 citationsarXiv
Blazar variability with the Vera C. Rubin Legacy Survey of Space and Time (LSST)2111.10172v1 · Claudia M. Raiteri, Maria I. Carnerero, Barbara Balmaverde et al.2021 · 15 citationsarXiv
Optimization of the Observing Cadence for the Rubin Observatory Legacy Survey of Space and Time: a pioneering process of community-focused experimental design2108.01683v2 · Federica B. Bianco, Zeljko Ivezi'c, R. Lynne Jones et al.2021 · 148 citationsarXiv
The most luminous blue quasars at 3.0<z<3.3. II. CIV/X-ray emission and accretion disc physics2107.02806v1 · Elisabeta Lusso, Emanuele Nardini, Susanna Bisogni et al.2021 · 15 citationsarXiv
Probing the Wind Component of Radio Emission in Luminous High-Redshift Quasars2106.07783v1 · Gordon T. Richards, Trevor V. McCaffrey, Amy Kimball et al.2021 · 24 citationsarXiv
A Novel Test of Quasar Orientation2106.02633v1 · Gordon T. Richards, Richard M. Plotkin, Paul C. Hewett et al.2021 · 4 citationsarXiv
Placing LOFAR-detected quasars in CIV emission space: implications for winds, jets and star formation2101.12635v2 · Amy L. Rankine, James H. Matthews, Paul C. Hewett et al.2021 · 17 citationsarXiv
Properties of a Previously Unidentified Instrumental Signature in that was Confused for AGN Variability2012.14452v1 · Jackeline Moreno, Rachel Buttry, John O'Brien et al.2020 · 8 citationsarXiv
Exploring the link between C IV outflow kinematics and sublimation-temperature dust in quasars2012.01425v2 · Matthew J. Temple, Manda Banerji, Paul C. Hewett et al.2020 · 32 citationsMNRAS 501, 3061-3073 (2021)
Placing High-Redshift Quasars in Perspective: a Catalog of Spectroscopic Properties from the Gemini Near Infrared Spectrograph -- Distant Quasar Survey2011.10895v1 · Brandon M. Matthews, Ohad Shemmer, Cooper Dix et al.2020 · 26 citationsarXiv
Discovery of a Remarkably Powerful Broad Absorption Line Quasar Outflow in SDSS J135246.37+423923.52001.07347v1 · Hyunseop Choi, Karen M. Leighly, Donald M. Terndrup et al.2020 · 31 citationsarXiv
The Bolometric Quasar Luminosity Function at z = 0-72001.02696v2 · Xuejian Shen, Philip F. Hopkins, Claude-Andr'e Faucher-Giguere et al.2020 · 323 citationsarXiv
BAL and non-BAL quasars: continuum, emission and absorption properties establish a common parent sample1912.08700v2 · Amy L. Rankine, Paul C. Hewett, Manda Banerji et al.2019 · 99 citationsarXiv
Physical Models for the Clustering of Obscured and Unobscured Quasars1912.01612v2 · Kelly E. Whalen, Ryan C. Hickox, Michael A. DiPompeo et al.2019 · 5 citationsarXiv
Narrow, Intrinsic CIV Absorption in Quasars as it Relates to Outflows, Orientation, and Radio Properties1907.11876v1 · Robert B. Stone, Gordon T. Richards2019 · 15 citationsarXiv
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