Xin Liu

2025

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

Luo, D., Jiang, N. & Liu, X., Jan 1 2025, In: Astrophysical Journal. 978, 1, 86.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Ishikawa, Y., Zakamska, N. L., Shen, Y., Liu, X., Chen, Y. C., Hwang, H. C., Vayner, A., Rupke, D. S. N., Veilleux, S., Wylezalek, D., Gross, A. C., Sankar, S. & Diachenko, N., Mar 1 2025, In: Astrophysical Journal. 982, 1, 22.

Research output: Contribution to journal › Article › peer-review

Open Access

2024

CIRCLEZ: Reliable photometric redshifts for active galactic nuclei computed solely using photometry from Legacy Survey Imaging for DESI

Saxena, A., Salvato, M., Roster, W., Shirley, R., Buchner, J., Wolf, J., Kohl, C., Starck, H., Dwelly, T., Comparat, J., Malyali, A., Krippendorf, S., Zenteno, A., Lang, D., Schlegel, D., Zhou, R., Dey, A., Valdes, F., Myers, A. & Assef, R. J. & 8 others, Ricci, C., Temple, M. J., Merloni, A., Koekemoer, A., Anderson, S. F., Morrison, S., Liu, X. & Nandra, K., Oct 2024, In: Astronomy and Astrophysics. 690, A365.

Research output: Contribution to journal › Article › peer-review

Open Access

DAVOS: Dwarf Active Galactic Nuclei from Variability for the Origins of Seeds: Properties of Variability-selected Active Galactic Nuclei in the COSMOS Field and Expectations for the Rubin Observatory

Burke, C. J., Liu, Y., Ward, C. A., Liu, X., Natarajan, P. & Greene, J. E., Aug 1 2024, In: Astrophysical Journal. 971, 2, 140.

Research output: Contribution to journal › Article › peer-review

Open Access

Exploring Changing-look Active Galactic Nuclei with the Sloan Digital Sky Survey V: First Year Results

Zeltyn, G., Trakhtenbrot, B., Eracleous, M., Yang, Q., Green, P., Anderson, S. F., LaMassa, S., Runnoe, J., Assef, R. J., Bauer, F. E., Brandt, W. N., Davis, M. C., Frederick, S. E., Fries, L. B., Graham, M. J., Grogin, N. A., Guolo, M., Hernández-García, L., Koekemoer, A. M. & Krumpe, M. & 15 others, Liu, X., Martínez-Aldama, M. L., Ricci, C., Schneider, D. P., Shen, Y., Śniegowska, M., Temple, M. J., Trump, J. R., Xue, Y., Brownstein, J. R., Dwelly, T., Morrison, S., Bizyaev, D., Pan, K. & Kollmeier, J. A., May 1 2024, In: Astrophysical Journal. 966, 1, 85.

Research output: Contribution to journal › Article › peer-review

Open Access

Gemini near-infrared spectroscopy of high-redshift Fermi Blazars: Jetted Black Holes in the early universe were overly massive

Burke, C. J., Liu, X. & Shen, Y., Jan 1 2024, In: Monthly Notices of the Royal Astronomical Society. 527, 3, p. 5356-5365 10 p., stad3592.

Research output: Contribution to journal › Article › peer-review

Open Access

High-quality Extragalactic Legacy-field Monitoring (HELM) with DECam: Project Overview and First Data Release

Zhuang, M. Y., Yang, Q., Shen, Y., Adamów, M., Friedel, D. N., Gruendl, R. A., Stone, Z., Li, J., Liu, X., Martini, P., Abbott, T. M. C., Anderson, S. F., Assef, R. J., Bauer, F. E., Bielby, R., Brandt, W. N., Burke, C. J., Casares, J., Chen, Y. C. & De Rosa, G. & 29 others, Drlica-Wagner, A., Dwelly, T., Eltvedt, A., Alvarez, G. F., Fu, J., Fuentes, C., Graham, M. L., Grier, C. J., Golovich, N., Hall, P. B., Hartigan, P., Horne, K., Koekemoer, A. M., Krumpe, M., Li, J. I., Lidman, C., Malik, U., Mangian, A., Merloni, A., Ricci, C., Salvato, M., Sharp, R., Trilling, D. E., Tucker, B. E., Wen, D., Wideman, Z., Xue, Y., Yu, Z. & Zucker, C., Oct 1 2024, In: Astrophysical Journal, Supplement Series. 274, 2, 42.

Research output: Contribution to journal › Article › peer-review

Open Access

PICZL: Image-based photometric redshifts for AGN

Roster, W., Salvato, M., Krippendorf, S., Saxena, A., Shirley, R., Buchner, J., Wolf, J., Dwelly, T., Bauer, F. E., Aird, J., Ricci, C., Assef, R. J., Anderson, S. F., Liu, X., Merloni, A., Weller, J. & Nandra, K., Dec 1 2024, In: Astronomy and Astrophysics. 692, A260.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Chen, Y. C., Ishikawa, Y., Zakamska, N. L., Liu, X., Shen, Y., Hwang, H. C., Rupke, D., Vayner, A., Gross, A. C., Liu, W., Wylezalek, D., Veilleux, S., Bertemes, C., Diachenko, N. & Sankar, S., Jun 1 2024, In: Astrophysical Journal. 968, 2, 92.

Research output: Contribution to journal › Article › peer-review

Open Access

2023

3D Spectroscopy with GTC-MEGARA of the Triple AGN Candidate in SDSS J102700.40+174900.8

Benítez, E., Ibarra-Medel, H., Negrete, C. A., Cruz-González, I., Rodríguez-Espinosa, J. M., Liu, X. & Shen, Y., Jul 1 2023, In: Astrophysical Journal. 952, 1, 45.

Research output: Contribution to journal › Article › peer-review

Open Access

A Chandra X-Ray Survey of Optically Selected Close Galaxy Pairs: Unexpectedly Low Occupation of Active Galactic Nuclei

He, L., Hou, M., Li, Z., Feng, S. & Liu, X., Jun 1 2023, In: Astrophysical Journal. 949, 2, 49.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Chen, Y.-C., Liu, X., Foord, A., Shen, Y., Oguri, M., Chen, N., Di Matteo, T., Holgado, M., Hwang, H.-C. & Zakamska, N., Apr 6 2023, In: Nature. 616, 7955, p. 45-49 5 p.

Research output: Contribution to journal › Article › peer-review

AGNet: Weighing Black Holes with Deep Learning

Lin, J. Y. Y., Pandya, S., Pratap, D., Liu, X., Kind, M. C. & Kindratenko, V., Feb 1 2023, In: Monthly Notices of the Royal Astronomical Society. 518, 4, p. 4921-4929 9 p.

Research output: Contribution to journal › Article › peer-review

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

Merz, G., Liu, Y., Burke, C. J., Aleo, P. D., Liu, X., Kind, M. C., Kindratenko, V. & Liu, Y., Nov 1 2023, In: Monthly Notices of the Royal Astronomical Society. 526, 1, p. 1122-1137 16 p.

Research output: Contribution to journal › Article › peer-review

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

Burke, C. J., Shen, Y., Liu, X., Natarajan, P., Caplar, N., Bellovary, J. M. & Wang, Z. F., Jan 1 2023, In: Monthly Notices of the Royal Astronomical Society. 518, 2, p. 1880-1904 25 p.

Research output: Contribution to journal › Article › peer-review

Open Access

Dwarf AGNs from Variability for the Origins of Seeds (DAVOS): Optical Variability of Broad-line Dwarf AGNs from the Zwicky Transient Facility

Wang, Z. F., Burke, C. J., Liu, X. & Shen, Y., May 1 2023, In: Monthly Notices of the Royal Astronomical Society. 521, 1, p. 99-113 15 p., stad532.

Research output: Contribution to journal › Article › peer-review

NOEMA Detection of Circumnuclear Molecular Gas in X-Ray Weak Dual Active Galactic Nuclei: No Evidence for Heavy Obscuration

Hou, M., Li, Z., Liu, X., Li, Z., Li, R., Wang, R., Wang, J. & Ho, L. C., Jan 1 2023, In: Astrophysical Journal. 943, 1, 50.

Research output: Contribution to journal › Article › peer-review

Open Access

Statistics of Galactic-scale Quasar Pairs at Cosmic Noon

Shen, Y., Hwang, H. C., Oguri, M., Chen, N., Matteo, T. D., Ni, Y., Bird, S., Zakamska, N., Liu, X., Chen, Y. C. & Kratter, K. M., Jan 1 2023, In: Astrophysical Journal. 943, 1, 38.

Research output: Contribution to journal › Article › peer-review

Open Access

The Eighteenth Data Release of the Sloan Digital Sky Surveys: Targeting and First Spectra from SDSS-V

Almeida, A., Anderson, S. F., Argudo-Fernández, M., Badenes, C., Barger, K., Barrera-Ballesteros, J. K., Bender, C. F., Benitez, E., Besser, F., Bird, J. C., Bizyaev, D., Blanton, M. R., Bochanski, J., Bovy, J., Brandt, W. N., Brownstein, J. R., Buchner, J., Bulbul, E., Burchett, J. N. & Díaz, M. C. & 135 others, Carlberg, J. K., Casey, A. R., Chandra, V., Cherinka, B., Chiappini, C., Coker, A. A., Comparat, J., Conroy, C., Contardo, G., Cortes, A., Covey, K., Crane, J. D., Cunha, K., Dabbieri, C., Davidson, J. W., Davis, M. C., Andrade Queiroz, A. B. D., De Lee, N., Delgado, J. E. M., Demasi, S., Di Mille, F., Donor, J., Dow, P., Dwelly, T., Eracleous, M., Eriksen, J., Fan, X., Farr, E., Frederick, S., Fries, L., Frinchaboy, P., Gänsicke, B. T., Ge, J., Ávila, C. G., Grabowski, K., Grier, C., Guiglion, G., Gupta, P., Hall, P., Hawkins, K., Hayes, C. R., Hermes, J. J., Hernández-García, L., Hogg, D. W., Holtzman, J. A., Ibarra-Medel, H. J., Ji, A., Jofre, P., Johnson, J. A., Jones, A. M., Kinemuchi, K., Kluge, M., Koekemoer, A., Kollmeier, J. A., Kounkel, M., Krishnarao, D., Krumpe, M., Lacerna, I., Lago, P. J. A., Laporte, C., Liu, C., Liu, A., Liu, X., Lopes, A. R., Macktoobian, M., Majewski, S. R., Malanushenko, V., Maoz, D., Masseron, T., Masters, K. L., Matijevic, G., McBride, A., Medan, I., Merloni, A., Morrison, S., Myers, N., Mészáros, S., Negrete, C. A., Nidever, D. L., Nitschelm, C., Oravetz, D., Oravetz, A., Pan, K., Peng, Y., Pinsonneault, M. H., Pogge, R., Qiu, D., Ramirez, S. V., Rix, H. W., Rosso, D. F., Runnoe, J., Salvato, M., Sanchez, S. F., Santana, F. A., Saydjari, A., Sayres, C., Schlaufman, K. C., Schneider, D. P., Schwope, A., Serna, J., Shen, Y., Sobeck, J., Song, Y. Y., Souto, D., Spoo, T., Stassun, K. G., Steinmetz, M., Straumit, I., Stringfellow, G., Sánchez-Gallego, J., Taghizadeh-Popp, M., Tayar, J., Thakar, A., Tissera, P. B., Tkachenko, A., Toledo, H. H., Trakhtenbrot, B., Fernández-Trincado, J. G., Troup, N., Trump, J. R., Tuttle, S., Ulloa, N., Vazquez-Mata, J. A., Alfaro, P. V., Villanova, S., Wachter, S., Weijmans, A. M., Wheeler, A., Wilson, J., Wojno, L., Wolf, J., Xue, X. X., Ybarra, J. E., Zari, E. & Zasowski, G., Aug 1 2023, In: Astrophysical Journal, Supplement Series. 267, 2, 44.

Research output: Contribution to journal › Article › peer-review

Open Access

The SDSS-V Black Hole Mapper Reverberation Mapping Project: Unusual Broad-line Variability in a Luminous Quasar

Fries, L. B., Trump, J. R., Davis, M. C., Grier, C. J., Shen, Y., Anderson, S. F., Dwelly, T., Eracleous, M., Homayouni, Y., Horne, K., Krumpe, M., Morrison, S., Runnoe, J. C., Trakhtenbrot, B., Assef, R. J., Brandt, W. N., Brownstein, J., Dabbieri, C., Fix, A. & Fonseca Alvarez, G. & 13 others, Frederick, S., Hall, P. B., Koekemoer, A. M., Li, J. I. H., Liu, X., Martínez-Aldama, M. L., Ricci, C., Schneider, D. P., Sharp, H. W., Temple, M. J., Yang, Q., Zeltyn, G. & Bizyaev, D., May 1 2023, In: Astrophysical Journal. 948, 1, 5.

Research output: Contribution to journal › Article › peer-review

Open Access

The Spitzer Coverage of HSC-Deep with IRAC for Z studies (SHIRAZ). I. IRAC Mosaics

Annunziatella, M., Sajina, A., Stefanon, M., Marchesini, D., Lacy, M., Labbé, I., Houston, L., Bezanson, R., Egami, E., Fan, X., Farrah, D., Greene, J., Goulding, A., Lin, Y. T., Liu, X., Moutard, T., Ono, Y., Ouchi, M., Sawicki, M. & Surace, J. & 1 others, Whitaker, K., Jul 1 2023, In: Astronomical Journal. 166, 1, 25.

Research output: Contribution to journal › Article › peer-review

Open Access

Varstrometry for Off-nucleus and Dual Subkiloparsec Active Galactic Nuclei (VODKA): Investigating the Nature of SDSS J0823+2418 at z = 1.81, A Likely Lensed Quasar

Gross, A. C., Chen, Y. C., Foord, A., Liu, X., Shen, Y., Oguri, M., Goulding, A., Hwang, H. C., Zakamska, N. L., Ma, Y. & Nolan, L., Oct 1 2023, In: Astrophysical Journal. 956, 2, 117.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Chen, Y. C., Liu, X., Lazio, J., Breiding, P., Burke-Spolaor, S., Hwang, H. C., Shen, Y. & Zakamska, N. L., Nov 1 2023, In: Astrophysical Journal. 958, 1, 29.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Li, J., Liu, X., Shen, Y., Oguri, M., Gross, A. C., Zakamska, N. L., Chen, Y. C. & Hwang, H. C., Sep 1 2023, In: Astrophysical Journal Letters. 955, 1, L16.

Research output: Contribution to journal › Article › peer-review

Open Access

2022

A Transient “Changing-look” Active Galactic Nucleus Resolved on Month Timescales from First-year Sloan Digital Sky Survey V Data

Zeltyn, G., Trakhtenbrot, B., Eracleous, M., Runnoe, J., Trump, J. R., Stern, J., Shen, Y., Hernández-García, L., Bauer, F. E., Yang, Q., Dwelly, T., Ricci, C., Green, P., Anderson, S. F., Assef, R. J., Guolo, M., MacLeod, C., Davis, M. C., Fries, L. & Gezari, S. & 15 others, Grogin, N. A., Homan, D., Koekemoer, A. M., Krumpe, M., LaMassa, S., Liu, X., Merloni, A., Martínez-Aldama, M. L., Schneider, D. P., Temple, M. J., Brownstein, J. R., Ibarra-Medel, H., Burke, J., Pellegrino, C. & Kollmeier, J. A., Nov 1 2022, In: Astrophysical Journal Letters. 939, 1, L16.

Research output: Contribution to journal › Article › peer-review

Open Access

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

Burke, C. J., Liu, X., Shen, Y., Phadke, K. A., Yang, Q., Hartley, W. G., Harrison, I., Palmese, A., Guo, H., Zhang, K., Kron, R., Turner, D. J., Giles, P. A., Lidman, C., Chen, Y. C., Gruendl, R. A., Choi, A., Amon, A., Sheldon, E. & Aguena, M. & 51 others, Allam, S., Andrade-Oliveira, F., Bacon, D., Bertin, E., Brooks, D., Carnero Rosell, A., Carrasco Kind, M., Carretero, J., Conselice, C., Costanzi, M., Da Costa, L. N., Pereira, M. E. S., Davis, T. M., De Vicente, J., Desai, S., Diehl, H. T., Everett, S., Ferrero, I., Flaugher, B., Garciá-Bellido, J., Gaztanaga, E., Gruen, D., Gschwend, J., Gutierrez, G., Hinton, S. R., Hollowood, D. L., Honscheid, K., Hoyle, B., James, D. J., Kuehn, K., Maia, M. A. G., Marshall, J. L., Menanteau, F., Miquel, R., Morgan, R., Paz-Chinchón, F., Pieres, A., Plazas Malagón, A. A., Reil, K., Romer, A. K., Sanchez, E., Schubnell, M., Serrano, S., Sevilla-Noarbe, I., Smith, M., Suchyta, E., Tarle, G., Thomas, D., To, C., Varga, T. N. & Wilkinson, R. D., Oct 1 2022, In: Monthly Notices of the Royal Astronomical Society. 516, 2, p. 2736-2756 21 p.

Research output: Contribution to journal › Article › peer-review

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

Foord, A., Liu, X., Gültekin, K., Whitley, K., Shi, F. & Chen, Y. C., Mar 1 2022, In: Astrophysical Journal. 927, 1, 3.

Research output: Contribution to journal › Article › peer-review

Open Access

Obscured active galactic nuclei and the need for optical to near-infrared, massively multiplexed, spectroscopic facilities

Petric, A., Lacy, M., Juneau, S., Shen, Y., Fan, X., Flagey, N., Gordon, Y., Haggard, D., Hall, P. B., Hathi, N., Ilić, D., Lagos, C. D. P., Liu, X., O'Dea, C., Popović, L., Sheinis, A., Wang, Y. & Xue, Y., Jan 1 2022, In: Astronomische Nachrichten. 343, 1-2, e210053.

Research output: Contribution to journal › Article › peer-review

Optical variability of quasars with 20-yr photometric light curves

Stone, Z., Shen, Y., Burke, C. J., Chen, Y. C., Yang, Q., Liu, X., Gruendl, R. A., Adamów, M., Andrade-Oliveira, F., Annis, J., Bacon, D., Bertin, E., Bocquet, S., Brooks, D., Burke, D. L., Carnero Rosell, A., Carrasco Kind, M., Carretero, J., Da Costa, L. N. & Pereira, M. E. S. & 35 others, De Vicente, J., Desai, S., Diehl, H. T., Doel, P., Ferrero, I., Friedel, D. N., Frieman, J., García-Bellido, J., Gaztanaga, E., Gruen, D., Gutierrez, G., Hinton, S. R., Hollowood, D. L., Honscheid, K., James, D. J., Kuehn, K., Kuropatkin, N., Lidman, C., Maia, M. A. G., Menanteau, F., Miquel, R., Morgan, R., Paz-Chinchón, F., Pieres, A., Plazas Malagón, A. A., Rodriguez-Monroy, M., Sanchez, E., Scarpine, V., Serrano, S., Sevilla-Noarbe, I., Smith, M., Suchyta, E., Swanson, M. E. C., Tarle, G. & To, C., Jul 1 2022, In: Monthly Notices of the Royal Astronomical Society. 514, 1, p. 164-184 21 p.

Research output: Contribution to journal › Article › peer-review

Open Access

Varstrometry for Off-nucleus and Dual Subkiloparsec AGN (VODKA): Hubble Space Telescope Discovers Double Quasars

Chen, Y. C., Hwang, H. C., Shen, Y., Liu, X., Zakamska, N. L., Yang, Q. & Li, J. I., Feb 1 2022, In: Astrophysical Journal. 925, 2, 162.

Research output: Contribution to journal › Article › peer-review

Open Access

Very Large Array Multiband Radio Imaging of the Triple AGN Candidate SDSS J0849+1114

Peng, S., Li, Z., Liu, X., Nyland, K., Wrobel, J. M. & Hou, M., Jul 1 2022, In: Astrophysical Journal. 934, 1, 89.

Research output: Contribution to journal › Article › peer-review

Open Access

2021

A characteristic optical variability time scale in astrophysical accretion disks

Burke, C. J., Shen, Y., Blaes, O., Gammie, C. F., Horne, K., Jiang, Y. F., Liu, X., McHardy, I. M., Morgan, C. W., Scaringi, S. & Yang, Q., Aug 13 2021, In: Science. 373, 6556, p. 789-792 4 p.

Research output: Contribution to journal › Article › peer-review

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

Shen, Y., Chen, Y. C., Hwang, H. C., Liu, X., Zakamska, N., Oguri, M., Li, J. I. H., Lazio, J. & Breiding, P., Jun 2021, In: Nature Astronomy. 5, 6, p. 569-574 6 p.

Research output: Contribution to journal › Article › peer-review

Discovery of a candidate binary supermassive black hole in a periodic quasar from circumbinary accretion variability

Liao, W. T., Chen, Y. C., Liu, X., Miguel Holgado, A., Guo, H., Gruendl, R., Morganson, E., Shen, Y., Davis, T., Kessler, R., Martini, P., McMahon, R. G., Allam, S., Annis, J., Avila, S., Banerji, M., Bechtol, K., Bertin, E., Brooks, D. & Buckley-Geer, E. & 50 others, Rosell, A. C., Kind, M. C., Carretero, J., Castander, F. J., Cunha, C., D'Andrea, C., Da Costa, L., Davis, C., De Vicente, J., Desai, S., Thomas Diehl, H., Doel, P., Eifler, T., Evrard, A., Flaugher, B., Fosalba, P., Frieman, J., Garcia-Bellido, J., Gaztanaga, E., Glazebrook, K., Gruen, D., Gschwend, J., Gutierrez, G., Hartley, W., Hollowood, D. L., Honscheid, K., Hoyle, B., James, D., Krause, E., Kuehn, K., Lima, M., Maia, M., Marshall, J., Menanteau, F., Miquel, R., Malagon, A. P., Roodman, A., Sanchez, E., Scarpine, V., Schubnell, M., Serrano, S., Smith, M., Chris Smith, R., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M., Tarle, G., Vikram, V. & Walker, A., Jan 1 2021, In: Monthly Notices of the Royal Astronomical Society. 500, 3, p. 4025-4041 17 p.

Research output: Contribution to journal › Article › peer-review

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

Palmese, A., Fishbach, M., Burke, C. J., Annis, J. & Liu, X., Jun 20 2021, In: Astrophysical Journal Letters. 914, 2, L34.

Research output: Contribution to journal › Article › peer-review

Open Access

On the AGN nature of broad balmer emission in four low-redshift metal-poor galaxies

Burke, C. J., Liu, X., Chen, Y. C., Shen, Y. & Guo, H., Jun 1 2021, In: Monthly Notices of the Royal Astronomical Society. 504, 1, p. 543-550 8 p.

Research output: Contribution to journal › Article › peer-review

Open Access

Spectral variability of a sample of extreme variability quasars and implications for the Mg II broad-line region

Yang, Q., Shen, Y., Chen, Y. C., Liu, X., Annis, J., Avila, S., Bertin, E., Brooks, D., Buckley-Geer, E., Rosell, A. C., Kind, M. C., Carretero, J., da Costa, L., Desai, S., Diehl, H. T., Doel, P., Frieman, J., Garcia-Bellido, J., Gaztanaga, E. & Gerdes, D. & 32 others, Gruen, D., Gruendl, R., Gschwend, J., Gutierrez, G., Hollowood, D. L., Honscheid, K., Hoyle, B., James, D., Krause, E., Kuehn, K., Lidman, C., Lima, M., Maia, M., Marshall, J., Martini, P., Menanteau, F., Miquel, R., Malagón, A. P., Sanchez, E., Scarpine, V., Schindler, R., Schubnell, M., Serrano, S., Sevilla, I., Smith, M., Soares-Santos, M., Sobreira, F., Suchyta, E., Swanson, M., Tarle, G., Vikram, V. & Walker, A., Apr 1 2021, In: Monthly Notices of the Royal Astronomical Society. 493, 4, p. 5773-5787 15 p.

Research output: Contribution to journal › Article › peer-review

Open Access

Very Large Array imaging rules out precessing radio jets in three DES-SDSS-selected candidate periodic quasars

Chen, Y. C., Liu, X., Liao, W. T. & Guo, H., Nov 1 2021, In: Monthly Notices of the Royal Astronomical Society. 507, 3, p. 4638-4645 8 p.

Research output: Contribution to journal › Article › peer-review

Open Access

2020

A Chandra X-Ray Survey of Optically Selected AGN Pairs

Hou, M., Li, Z. & Liu, X., Sep 1 2020, In: Astrophysical Journal. 900, 1, 79.

Research output: Contribution to journal › Article › peer-review

Open Access

Candidate periodically variable quasars from the Dark Energy Survey and the Sloan Digital Sky Survey

Chen, Y. C., Liu, X., Liao, W. T., Holgado, A. M., Guo, H., Gruendl, R. A., Morganson, E., Shen, Y., Zhang, K., Abbott, T. M. C., Aguena, M., Allam, S., Avila, S., Bertin, E., Bhargava, S., Brooks, D., Burke, D. L., Carnero Rosell, A., Carollo, D. & Carrasco Kind, M. & 45 others, Carretero, J., Costanzi, M., Da Costa, L. N., Davis, T. M., De Vicente, J., Desai, S., Diehl, H. T., Doel, P., Everett, S., Flaugher, B., Friedel, D., Frieman, J., García-Bellido, J., Gaztanaga, E., Glazebrook, K., Gruen, D., Gutierrez, G., Hinton, S. R., Hollowood, D. L., James, D. J., Kim, A. G., Kuehn, K., Kuropatkin, N., Lewis, G. F., Lidman, C., Lima, M., Maia, M. A. G., March, M., Marshall, J. L., Menanteau, F., Miquel, R., Palmese, A., Paz-Chinchón, F., Plazas, A. A., Sanchez, E., Schubnell, M., Serrano, S., Sevilla-Noarbe, I., Smith, M., Suchyta, E., Swanson, M. E. C., Tarle, G., Tucker, B. E., Norbert Varga, T. & Walker, A. R., Dec 1 2020, In: Monthly Notices of the Royal Astronomical Society. 499, 2, p. 2245-2264 20 p.

Research output: Contribution to journal › Article › peer-review

Open Access

High-redshift Extreme Variability Quasars from Sloan Digital Sky Survey Multiepoch Spectroscopy

Guo, H., Peng, J., Zhang, K., Burke, C. J., Liu, X., Sun, M., Wang, S., Kong, M., Sheng, Z., Wang, T., He, Z. & Gu, M., Dec 10 2020, In: Astrophysical Journal. 905, 1, 52.

Research output: Contribution to journal › Article › peer-review

Open Access

Optical Variability of the Dwarf AGN NGC 4395 from the Transiting Exoplanet Survey Satellite

Burke, C. J., Shen, Y., Chen, Y. C., Scaringi, S., Faucher-Giguere, C. A., Liu, X. & Yang, Q., Aug 20 2020, In: Astrophysical Journal. 899, 2, 136.

Research output: Contribution to journal › Article › peer-review

Open Access

Spectral energy distributions of candidate periodically variable quasars: Testing the binary black hole hypothesis

Guo, H., Liu, X., Tayyaba, Z. & Liao, W. T., Feb 1 2020, In: Monthly Notices of the Royal Astronomical Society. 492, 2, p. 2910-2923 14 p.

Research output: Contribution to journal › Article › peer-review

Open Access

The Curious Case of PHL 293B: A Long-lived Transient in a Metal-poor Blue Compact Dwarf Galaxy

Burke, C. J., Baldassare, V. F., Liu, X., Foley, R. J., Shen, Y., Palmese, A., Guo, H., Herner, K., Abbott, T. M. C., Aguena, M., Allam, S., Avila, S., Bertin, E., Brooks, D., Carnero Rosell, A., Carrasco Kind, M., Carretero, J., Da Costa, L. N., De Vicente, J. & Desai, S. & 33 others, Doel, P., Eifler, T. F., Everett, S., Frieman, J., García-Bellido, J., Gaztanaga, E., Gruen, D., Gruendl, R. A., Gschwend, J., Gutierrez, G., Hollowood, D. L., Honscheid, K., James, D. J., Krause, E., Kuehn, K., Maia, M. A. G., Menanteau, F., Miquel, R., Paz-Chinchón, F., Plazas, A. A., Sanchez, E., Santiago, B., Scarpine, V., Serrano, S., Sevilla-Noarbe, I., Smith, M., Soares-Santos, M., Suchyta, E., Swanson, M. E. C., Tarle, G., Tucker, D. L., Varga, T. N. & Walker, A. R., May 1 2020, In: Astrophysical Journal Letters. 894, 1, L5.

Research output: Contribution to journal › Article › peer-review

Open Access

The Karl G. Jansky very large array sky survey (VLASS). Science case and survey design

Lacy, M., Baum, S. A., Chandler, C. J., Chatterjee, S., Clarke, T. E., Deustua, S., English, J., Farnes, J., Gaensler, B. M., Gugliucci, N., Hallinan, G., Kent, B. R., Kimball, A., Law, C. J., Lazio, T. J. W., Marvil, J., Mao, S. A., Medlin, D., Mooley, K. & Murphy, E. J. & 58 others, Myers, S., Osten, R., Richards, G. T., Rosolowsky, E., Rudnick, L., Schinzel, F., Sivakoff, G. R., Sjouwerman, L. O., Taylor, R., White, R. L., Wrobel, J., Andernach, H., Beasley, A. J., Berger, E., Bhatnager, S., Birkinshaw, M., Bower, G. C., Brandt, W. N., Brown, S., Burke-Spolaor, S., Butler, B. J., Comerford, J., Demorest, P. B., Fu, H., Giacintucci, S., Golap, K., Güth, T., Hales, C. A., Hiriart, R., Hodge, J., Horesh, A., Ivezić, Jarvis, M. J., Kamble, A., Kassim, N., Liu, X., Loinard, L., Lyons, D. K., Masters, J., Mezcua, M., Moellenbrock, G. A., Mroczkowski, T., Nyland, K., O’dea, C. P., O’sullivan, S. P., Peters, W. M., Radford, K., Rao, U., Robnett, J., Salcido, J., Shen, Y., Sobotka, A., Witz, S., Vaccari, M., van Weeren, R. J., Vargas, A., Williams, P. K. G. & Yoon, I., Mar 2020, In: Publications of the Astronomical Society of the Pacific. 132, 1009, 035001.

Research output: Contribution to journal › Article › peer-review

Understanding Broad Mg II Variability in Quasars with Photoionization: Implications for Reverberation Mapping and Changing-look Quasars

Guo, H., Shen, Y., He, Z., Wang, T., Liu, X., Wang, S., Sun, M., Yang, Q., Kong, M. & Sheng, Z., Jan 10 2020, In: Astrophysical Journal. 888, 2, 58.

Research output: Contribution to journal › Article › peer-review

Open Access

Varstrometry for Off-nucleus and Dual Subkiloparsec AGN (VODKA): Methodology and Initial Results with Gaia DR2

Hwang, H. C., Shen, Y., Zakamska, N. & Liu, X., Jan 10 2020, In: Astrophysical Journal. 888, 2, 73.

Research output: Contribution to journal › Article › peer-review

Open Access

2019

Active Galactic Nucleus Pairs from the Sloan Digital Sky Survey. III. Chandra X-Ray Observations Unveil Obscured Double Nuclei

Hou, M., Liu, X., Guo, H., Li, Z., Shen, Y. & Green, P. J., Sep 1 2019, In: Astrophysical Journal. 882, 1, 41.

Research output: Contribution to journal › Article › peer-review

Open Access

An Unusual Mid-infrared Flare in a Type 2 AGN: An Obscured Turning-on AGN or Tidal Disruption Event?

Yang, Q., Shen, Y., Liu, X., Wu, X. B., Jiang, L., Shangguan, J., Graham, M. J. & Yao, S., Nov 10 2019, In: Astrophysical Journal. 885, 2, 110.

Research output: Contribution to journal › Article › peer-review

Open Access

A Trio of Massive Black Holes Caught in the Act of Merging

Liu, X., Hou, M., Li, Z., Nyland, K., Guo, H., Kong, M., Shen, Y., Wrobel, J. M. & Peng, S., Dec 10 2019, In: Astrophysical Journal. 887, 1, 90.

Research output: Contribution to journal › Article › peer-review

Open Access

Xin Liu

Research output

Search results