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Automated measurement of quasar redshift with a Gaussian process

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Measurements of Effective Optical Depth in the Lyα Forest from the BOSS DR12 Quasar Sample

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The Reddening and [O ii] Emissions of the Quasar Mg ii Absorption-line Systems

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Spatially separated continuum sources revealed by microlensing in the gravitationally lensed broad absorption line quasar SDSS J081830.46+060138.0

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Mg ii and Fe ii Fluxes of Luminous Quasars at z ∼ 2.7 and the Evaluation of the Baldwin Effect in the Flux-to-abundance Conversion Method for Quasars

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Extreme ultraviolet quasar colours from GALEX observations of the SDSS DR14Q catalogue

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Spectroscopic QUasar extractor and redshift (z) estimator squeze – II. Universality of the results

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BAL and non-BAL quasars: continuum, emission, and absorption properties establish a common parent sample

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The Coevolution of Galaxies and the Cool Circumgalactic Medium Probed with the SDSS and DESI Legacy Imaging Surveys

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Constraining the Gravitational Lensing of z ≳ 6 Quasars from Their Proximity Zones

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Prescriptions for Correcting Ultraviolet-based Redshifts for Luminous Quasars at High Redshift

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The Cosmic Thermal History Probed by Sunyaev–Zeldovich Effect Tomography

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The Astrophysical Journal 902 (1) 56 (2020)
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The Sloan Digital Sky Survey Quasar Catalog: Sixteenth Data Release

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Cataloguing the radio-sky with unsupervised machine learning: a new approach for the SKA era

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Monthly Notices of the Royal Astronomical Society 497 (3) 2730 (2020)
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Baryon acoustic oscillations signature in the three-point angular correlation function from the SDSS-DR12 quasar survey

E de Carvalho, A Bernui, H S Xavier and C P Novaes
Monthly Notices of the Royal Astronomical Society 492 (3) 4469 (2020)
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Gravitational-wave Constraints on the Cosmic Opacity at z ∼ 5: Forecast from Space Gravitational-wave Antenna DECIGO

Shuaibo Geng, Shuo Cao, Tonghua Liu, Marek Biesiada, Jingzhao Qi, Yuting Liu and Zong-Hong Zhu
The Astrophysical Journal 905 (1) 54 (2020)
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Testing the Cosmic Opacity at Higher Redshifts: Implication from Quasars with Available UV and X-Ray Observations

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The Astrophysical Journal 899 (1) 71 (2020)
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Magnetic-reconnection-heated corona in active galactic nuclei: refined disc–corona model and application to broad-band radiation

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Three-dimensional Distribution Map of H i Gas and Galaxies around an Enormous Lyα Nebula and Three QSOs at z = 2.3 Revealed by the H i Tomographic Mapping Technique

Shiro Mukae, Masami Ouchi, Zheng Cai, Khee-Gan Lee, J. Xavier Prochaska, Sebastiano Cantalupo, Yoshiaki Ono, Zheng Zheng, Kentaro Nagamine, Nao Suzuki, John D. Silverman, Toru Misawa, Akio K. Inoue, Joseph F. Hennawi, Yuichi Matsuda, Ken Mawatari, Yuma Sugahara, Takashi Kojima, Takatoshi Shibuya, Yuichi Harikane, Seiji Fujimoto, Yi-Kuan Chiang, Haibin Zhang and Ryota Kakuma
The Astrophysical Journal 896 (1) 45 (2020)
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Individual optical variability of active galactic nuclei from the MEXSAS2 sample

M Laurenti, F Vagnetti, R Middei and M Paolillo
Monthly Notices of the Royal Astronomical Society 499 (4) 6053 (2020)
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Model-independent Constraints on Cosmic Curvature: Implication from Updated Hubble Diagram of High-redshift Standard Candles

Yuting Liu, Shuo Cao, Tonghua Liu, Xiaolei Li, Shuaibo Geng, Yujie Lian and Wuzheng Guo
The Astrophysical Journal 901 (2) 129 (2020)
https://doi.org/10.3847/1538-4357/abb0e4

The Completed SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations with Lyα Forests

Hélion du Mas des Bourboux, James Rich, Andreu Font-Ribera, Victoria de Sainte Agathe, James Farr, Thomas Etourneau, Jean-Marc Le Goff, Andrei Cuceu, Christophe Balland, Julian E. Bautista, Michael Blomqvist, Jonathan Brinkmann, Joel R. Brownstein, Solène Chabanier, Edmond Chaussidon, Kyle Dawson, Alma X. González-Morales, Julien Guy, Brad W. Lyke, Axel de la Macorra, Eva-Maria Mueller, Adam D. Myers, Christian Nitschelm, Andrea Muñoz Gutiérrez, Nathalie Palanque-Delabrouille, et al.
The Astrophysical Journal 901 (2) 153 (2020)
https://doi.org/10.3847/1538-4357/abb085

Quasi-periodic behaviour in the optical and γ-ray light curves of blazars 3C 66A and B2 1633+38

J Otero-Santos, J A Acosta-Pulido, J Becerra González, et al.
Monthly Notices of the Royal Astronomical Society 492 (4) 5524 (2020)
https://doi.org/10.1093/mnras/staa134

Time-delay Measurement of Mg ii Broad-line Response for the Highly Accreting Quasar HE 0413-4031: Implications for the Mg ii–based Radius–Luminosity Relation

Michal Zajaček, Bożena Czerny, Mary Loli Martinez–Aldama, Mateusz Rałowski, Aleksandra Olejak, Swayamtrupta Panda, Krzysztof Hryniewicz, Marzena Śniegowska, Mohammad-Hassan Naddaf, Wojtek Pych, Grzegorz Pietrzyński, C. Sobrino Figaredo, Martin Haas, Justyna Średzińska, Magdalena Krupa, Agnieszka Kurcz, Andrzej Udalski, Marek Gorski and Marek Sarna
The Astrophysical Journal 896 (2) 146 (2020)
https://doi.org/10.3847/1538-4357/ab94ae

Spectroscopic QUasar Extractor and redshift (z) Estimator squeze – I. Methodology

Ignasi Pérez-Ràfols, Matthew M Pieri, Michael Blomqvist, Sean Morrison and Debopam Som
Monthly Notices of the Royal Astronomical Society 496 (4) 4931 (2020)
https://doi.org/10.1093/mnras/stz3467

Initial Results from a Systematic Search for Changing-look Active Galactic Nuclei Selected via Mid-infrared Variability

Zhenfeng Sheng, Tinggui Wang, Ning Jiang, Jiani Ding, Zheng Cai, Hengxiao Guo, Luming Sun, Liming Dou and Chenwei Yang
The Astrophysical Journal 889 (1) 46 (2020)
https://doi.org/10.3847/1538-4357/ab5af9

Faint Quasars Live in the Same Number Density Environments as Lyman Break Galaxies at z ∼ 4

Hisakazu Uchiyama, Masayuki Akiyama, Jun Toshikawa, Nobunari Kashikawa, Roderik Overzier, Tohru Nagao, Kohei Ichikawa, Murilo Marinello, Masatoshi Imanishi, Masayuki Tanaka, Yoshiki Matsuoka, Yutaka Komiyama, Shogo Ishikawa, Masafusa Onoue, Mariko Kubo, Yuichi Harikane, Kei Ito, Shigeru Namiki and Yongming Liang
The Astrophysical Journal 905 (2) 125 (2020)
https://doi.org/10.3847/1538-4357/abc47b

The correlations between optical/UV broad lines and X-ray emission for a large sample of quasars

John D Timlin, W N Brandt, Q Ni, et al.
Monthly Notices of the Royal Astronomical Society 492 (1) 719 (2020)
https://doi.org/10.1093/mnras/stz3433

X-ray properties of dust-obscured galaxies with broad optical/UV emission lines

Fan Zou (邹凡), William N Brandt, Fabio Vito, et al.
Monthly Notices of the Royal Astronomical Society 499 (2) 1823 (2020)
https://doi.org/10.1093/mnras/staa2930

Following the crumbs: statistical effects of ram pressure in galaxies

S Rodríguez, D Garcia Lambas, N D Padilla and P Troncoso-Iribarren
Monthly Notices of the Royal Astronomical Society 492 (1) 413 (2020)
https://doi.org/10.1093/mnras/stz3456

Blazar Radio and Optical Survey (BROS): A Catalog of Blazar Candidates Showing Flat Radio Spectrum and Their Optical Identification in Pan-STARRS1 Surveys

Ryosuke Itoh, Yousuke Utsumi, Yoshiyuki Inoue, Kouji Ohta, Akihiro Doi, Tomoki Morokuma, Koji S. Kawabata and Yasuyuki T. Tanaka
The Astrophysical Journal 901 (1) 3 (2020)
https://doi.org/10.3847/1538-4357/abab07

Blazars at the Cosmic Dawn

Vaidehi S. Paliya, M. Ajello, H.-M. Cao, M. Giroletti, Amanpreet Kaur, Greg Madejski, Benoit Lott and D. Hartmann
The Astrophysical Journal 897 (2) 177 (2020)
https://doi.org/10.3847/1538-4357/ab9c1a

The first high-redshift changing-look quasars

Nicholas P Ross, Matthew J Graham, Giorgio Calderone, et al.
Monthly Notices of the Royal Astronomical Society 498 (2) 2339 (2020)
https://doi.org/10.1093/mnras/staa2415

Spectroscopy of Broad Absorption Line Quasars at 3 ≲ Z ≲ 5. I. Evidence for Quasar Winds Shaping Broad/Narrow Emission Line Regions

Weimin Yi, Wenwen Zuo, Jinyi Yang, Feige Wang, John Timlin, Catherine Grier, Xue-Bing Wu, Xiaohui Fan and Jin-Ming Bai
The Astrophysical Journal 893 (2) 95 (2020)
https://doi.org/10.3847/1538-4357/ab7eb8

The Lx–Luv–Lradio relation and corona–disc–jet connection in optically selected radio-loud quasars

S F Zhu (朱世甫), W N Brandt, B Luo (罗斌), et al.
Monthly Notices of the Royal Astronomical Society 496 (1) 245 (2020)
https://doi.org/10.1093/mnras/staa1411

Constraining the Halo Mass of Damped Lyα Absorption Systems (DLAs) at z = 2–3.5 Using the Quasar-CMB Lensing Cross-correlation

Xiaojing Lin, Zheng Cai, Yin Li, Alex Krolewski and Simone Ferraro
The Astrophysical Journal 905 (2) 176 (2020)
https://doi.org/10.3847/1538-4357/abc620

High-z Universe Probed via Lensing by QSOs (HULQ). I. Number Estimates of QSO–QSO and QSO–Galaxy Lenses

Yoon Chan Taak and Myungshin Im
The Astrophysical Journal 897 (2) 163 (2020)
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Results from EDGES High-Band. III. New Constraints on Parameters of the Early Universe

Raul A. Monsalve, Anastasia Fialkov, Judd D. Bowman, Alan E. E. Rogers, Thomas J. Mozdzen, Aviad Cohen, Rennan Barkana and Nivedita Mahesh
The Astrophysical Journal 875 (1) 67 (2019)
https://doi.org/10.3847/1538-4357/ab07be

Discovery of Two Quasars at z = 5 from the OGLE Survey

Szymon Kozłowski, Eduardo Bañados, A. Udalski, N. Morrell, A. P. Ji, Ł. Wyrzykowski, A. Rau, P. Mróz, J. Greiner, M. Gromadzki, M. K. Szymański, I. Soszyński, R. Poleski, P. Pietrukowicz, J. Skowron, D. M. Skowron, K. Ulaczyk, K. Rybicki, P. Iwanek and M. Wrona
The Astrophysical Journal 878 (2) 115 (2019)
https://doi.org/10.3847/1538-4357/ab20d1

The Spectroscopic Signature of Variability in High-redshift Quasars

Jamie C. Dyer, Kyle S. Dawson, Hélion du Mas des Bourboux, M. Vivek, Dmitry Bizyaev, Audrey Oravetz, Kaike Pan and Donald P. Schneider
The Astrophysical Journal 880 (2) 78 (2019)
https://doi.org/10.3847/1538-4357/ab288c

QSO MUSEUM I: a sample of 61 extended Ly α-emission nebulae surroundingz∼ 3 quasars

Fabrizio Arrigoni Battaia, Joseph F Hennawi, J Xavier Prochaska, et al.
Monthly Notices of the Royal Astronomical Society 482 (3) 3162 (2019)
https://doi.org/10.1093/mnras/sty2827

Unveiling the weak radio quasar population at $z\ge 4$

Krisztina Perger, Sándor Frey, Krisztina É Gabányi and L Viktor Tóth
Monthly Notices of the Royal Astronomical Society 490 (2) 2542 (2019)
https://doi.org/10.1093/mnras/stz2723

Discovery of Metastable He I* λ10830 Mini-broad Absorption Lines and Very Narrow Paschen α Emission Lines in the ULIRG Quasar IRAS F11119+3257

Xiang Pan, Hongyan Zhou, Wenjuan Liu, Bo Liu, Tuo Ji, Xiheng Shi, Shaohua Zhang, Peng Jiang, Huiyuan Wang and Lei Hao
The Astrophysical Journal 883 (2) 173 (2019)
https://doi.org/10.3847/1538-4357/ab40b5

The FRB 121102 Host Is Atypical among Nearby Fast Radio Bursts

Ye Li, Bing Zhang, Kentaro Nagamine and Jingjing Shi
The Astrophysical Journal Letters 884 (1) L26 (2019)
https://doi.org/10.3847/2041-8213/ab3e41

Quasar Properties from the Sloan Digital Sky Survey. II. The Quasars Obtained by the SDSS-IV in the First Two Years

Zhi-Fu Chen, Shuang-Xi Yi, Ting-Ting Pang, Zhe-Geng Chen, Run-Jin Gui, Zhi-Wen Wang, Xiao-Hua Mo and Ting-Feng Yi
The Astrophysical Journal Supplement Series 244 (2) 36 (2019)
https://doi.org/10.3847/1538-4365/ab41fe

Galaxy properties derived with spectral energy distribution fitting in the Hawaii-Hubble Deep Field-North

Fang-You Gao, Jun-Yao Li and Yong-Quan Xue
Research in Astronomy and Astrophysics 19 (3) 039 (2019)
https://doi.org/10.1088/1674-4527/19/3/39

QSOs sigposting cluster size halos as gravitational lenses: halo mass, projected mass density profile and concentration at z∼0.7

L. Bonavera, J. González-Nuevo, S.L. Suárez Gómez, et al.
Journal of Cosmology and Astroparticle Physics 2019 (09) 021 (2019)
https://doi.org/10.1088/1475-7516/2019/09/021

Narrow Absorption Lines Complex. III. Gradual Transition from Type S to Type N Broad Absorption Line

Wei-Jian 坚 Lu 陆伟 and Ying-Ru 如 Lin 林樱
The Astrophysical Journal 881 (2) 105 (2019)
https://doi.org/10.3847/1538-4357/ab2e08

Redshift-weighted constraints on primordial non-Gaussianity from the clustering of the eBOSS DR14 quasars in Fourier space

Emanuele Castorina, Nick Hand, Uroš Seljak, et al.
Journal of Cosmology and Astroparticle Physics 2019 (09) 010 (2019)
https://doi.org/10.1088/1475-7516/2019/09/010