The X-ray properties of z > 6 quasars: no evident evolution of accretion physics in the first Gyr of the Universe
A&A, 630 (2019) A118
Published online: 2019-10-02
Articles citing this article
The Citing articles tool gives a list of articles citing the current article.
The citing articles come from EDP Sciences database, as well as other publishers participating in CrossRef Cited-by Linking Program. You can set up your personal account to receive an email alert each time this article is cited by a new article (see the menu on the right-hand side of the abstract page).
Cited article:
This article has been cited by the following article(s):
JWST meets Chandra: a large population of Compton thick, feedback-free, and intrinsically X-ray weak AGN, with a sprinkle of SNe
Roberto Maiolino, Guido Risaliti, Matilde Signorini, Bartolomeo Trefoloni, Ignas Juodžbalis, Jan Scholtz, Hannah Übler, Francesco D’Eugenio, Stefano Carniani, Andy Fabian, Xihan Ji, Giovanni Mazzolari, Elena Bertola, Marcella Brusa, Andrew J Bunker, Stephane Charlot, Andrea Comastri, Giovanni Cresci, Christa Noel DeCoursey, Eiichi Egami, Fabrizio Fiore, Roberto Gilli, Michele Perna, Sandro Tacchella and Giacomo VenturiMonthly Notices of the Royal Astronomical Society 538 (3) 1921 (2025)
https://doi.org/10.1093/mnras/staf359
Warm gas in the vicinity of a supermassive black hole 13 billion years ago
K. Tadaki, F. Esposito, L. Vallini, T. Tsukui, T. Saito, D. Iono and T. MichiyamaNature Astronomy 9 (5) 720 (2025)
https://doi.org/10.1038/s41550-025-02505-x
Are quasars reliable standard candles?
E. Lusso, G. Risaliti and E. NardiniAstronomy & Astrophysics 697 A108 (2025)
https://doi.org/10.1051/0004-6361/202453504
NuSTAR Observations of a Varying-flux Quasar in the Epoch of Reionization
Lea Marcotulli, Thomas Connor, Eduardo Bañados, Peter G. Boorman, Giulia Migliori, Brian W. Grefenstette, Emmanuel Momjian, Aneta Siemiginowska, Daniel Stern, Silvia Belladitta, C. C. Cheung, Andrew Fabian, Yana Khusanova, Chiara Mazzucchelli, Sofía Rojas-Ruiz and C. Megan UrryThe Astrophysical Journal Letters 979 (1) L6 (2025)
https://doi.org/10.3847/2041-8213/ad94ee
HYPERION: Broad-band X-ray-to-near-infrared emission of quasars in the first billion years of the Universe
I. Saccheo, A. Bongiorno, E. Piconcelli, L. Zappacosta, M. Bischetti, V. D’Odorico, C. Done, M. J. Temple, V. Testa, A. Tortosa, M. Brusa, S. Carniani, F. Civano, A. Comastri, S. Cristiani, D. De Cicco, M. Elvis, X. Fan, C. Feruglio, F. Fiore, S. Gallerani, E. Giallongo, R. Gilli, A. Grazian, M. Guainazzi, et al.Astronomy & Astrophysics 693 A157 (2025)
https://doi.org/10.1051/0004-6361/202450876
UNCOVER: Candidate Red Active Galactic Nuclei at 3 < z < 7 with JWST and ALMA
Ivo Labbe, Jenny E. Greene, Rachel Bezanson, Seiji Fujimoto, Lukas J. Furtak, Andy D. Goulding, Jorryt Matthee, Rohan P. Naidu, Pascal A. Oesch, Hakim Atek, Gabriel Brammer, Iryna Chemerynska, Dan Coe, Sam E. Cutler, Pratika Dayal, Robert Feldmann, Marijn Franx, Karl Glazebrook, Joel Leja, Michael Maseda, Danilo Marchesini, Themiya Nanayakkara, Erica J. Nelson, Richard Pan, Casey Papovich, et al.The Astrophysical Journal 978 (1) 92 (2025)
https://doi.org/10.3847/1538-4357/ad3551
The effects of super-Eddington accretion and feedback on the growth of early supermassive black holes and galaxies
Filip Huško, Cedric G Lacey, William J Roper, Joop Schaye, Jemima Mae Briggs and Matthieu SchallerMonthly Notices of the Royal Astronomical Society 537 (3) 2559 (2025)
https://doi.org/10.1093/mnras/staf146
Identification of high-redshift X-ray active galactic nuclei in the 4XMM-DR11 serendipitous catalogue using DES data
E. Pouliasis, A. Ruiz, I. Georgantopoulos, A. Akylas, N. A. Webb, F. J. Carrera, S. Mateos, A. Nebot, M. G. Watson, F. X. Pineau and C. MotchAstronomy & Astrophysics 697 A123 (2025)
https://doi.org/10.1051/0004-6361/202453023
Intervening nuclear obscuration changing the X-ray look of the z ≈ 6 quasi-stellar object CFHQS J164121+375520
F. Vito, W. N. Brandt, A. Comastri, R. Gilli, F. Bauer, S. Belladitta, G. Chartas, K. Iwasawa, G. Lanzuisi, B. Luo, S. Marchesi, M. Mignoli, F. Ricci, O. Shemmer, C. Spingola, C. Vignali, W. Boschin, F. Cusano and D. ParisAstronomy & Astrophysics 694 L16 (2025)
https://doi.org/10.1051/0004-6361/202453618
Surveying the Onset and Evolution of Supermassive Black Holes at High-z with AXIS
Nico Cappelluti, Adi Foord, Stefano Marchesi, Fabio Pacucci, Angelo Ricarte, Melanie Habouzit, Fabio Vito, Meredith Powell, Michael Koss and Richard MushotzkyUniverse 10 (7) 276 (2024)
https://doi.org/10.3390/universe10070276
The Scavenger Hunt for Quasar Samples to Be Used as Cosmological Tools
Maria Giovanna Dainotti, Giada Bargiacchi, Aleksander Łukasz Lenart and Salvatore CapozzielloGalaxies 12 (1) 4 (2024)
https://doi.org/10.3390/galaxies12010004
Uncovering a Massive z ∼ 7.7 Galaxy Hosting a Heavily Obscured Radio-loud Active Galactic Nucleus Candidate in COSMOS-Web
Erini Lambrides, Marco Chiaberge, Arianna S. Long, Daizhong Liu, Hollis B. Akins, Andrew F. Ptak, Irham Taufik Andika, Alessandro Capetti, Caitlin M. Casey, Jaclyn B. Champagne, Katherine Chworowsky, Tracy E. Clarke, Olivia R. Cooper, Xuheng Ding, Dillon Z. Dong, Andreas L. Faisst, Jordan Y. Forman, Maximilien Franco, Steven Gillman, Ghassem Gozaliasl, Kirsten R. Hall, Santosh Harish, Christopher C. Hayward, Michaela Hirschmann, Taylor A. Hutchison, et al.The Astrophysical Journal Letters 961 (1) L25 (2024)
https://doi.org/10.3847/2041-8213/ad11ee
A Candidate Supermassive Black Hole in a Gravitationally Lensed Galaxy at Z ≈ 10
Orsolya E. Kovács, Ákos Bogdán, Priyamvada Natarajan, Norbert Werner, Mojegan Azadi, Marta Volonteri, Grant R. Tremblay, Urmila Chadayammuri, William R. Forman, Christine Jones and Ralph P. KraftThe Astrophysical Journal Letters 965 (2) L21 (2024)
https://doi.org/10.3847/2041-8213/ad391f
HYPERION. Shedding light on the first luminous quasars: A correlation between UV disc winds and X-ray continuum
A. Tortosa, L. Zappacosta, E. Piconcelli, M. Bischetti, C. Done, G. Miniutti, I. Saccheo, G. Vietri, A. Bongiorno, M. Brusa, S. Carniani, I. V. Chilingarian, F. Civano, S. Cristiani, V. D’Odorico, M. Elvis, X. Fan, C. Feruglio, F. Fiore, S. Gallerani, E. Giallongo, R. Gilli, A. Grazian, M. Guainazzi, F. Haardt, et al.Astronomy & Astrophysics 691 A235 (2024)
https://doi.org/10.1051/0004-6361/202449662
https://doi.org/10.12794/metadc2415959
Fast supermassive black hole growth in the SPT2349–56 protocluster at z = 4.3
F. Vito, W. N. Brandt, A. Comastri, R. Gilli, R. J. Ivison, G. Lanzuisi, B. D. Lehmer, I. E. Lopez, P. Tozzi and C. VignaliAstronomy & Astrophysics 689 A130 (2024)
https://doi.org/10.1051/0004-6361/202450225
5233 (2024)
https://doi.org/10.1007/978-981-19-6960-7_130
The SRG/eROSITA All-Sky Survey: X-ray beacons at late cosmic dawn
J. Wolf, M. Salvato, S. Belladitta, R. Arcodia, S. Ciroi, F. Di Mille, T. Sbarrato, J. Buchner, S. Hämmerich, J. Wilms, W. Collmar, T. Dwelly, A. Merloni, T. Urrutia and K. NandraAstronomy & Astrophysics 691 A30 (2024)
https://doi.org/10.1051/0004-6361/202451035
Constraining the Excitation of Molecular Gas in Two Quasar-starburst Systems at z ∼ 6
Fuxiang Xu, Ran Wang, Jianan Li, Roberto Neri, Antonio Pensabene, Roberto Decarli, Yali Shao, Eduardo Bañados, Pierre Cox, Frank Bertoldi, Chiara Feruglio, Fabian Walter, Bram P. Venemans, Alain Omont, Dominik Riechers, Jeff Wagg, Karl M. Menten and Xiaohui FanThe Astrophysical Journal 977 (2) 190 (2024)
https://doi.org/10.3847/1538-4357/ad8de2
Comprehensive view of a z ∼ 6.5 radio-loud quasi-stellar object: From the radio to the optical/NIR to the X-ray band
L. Ighina, A. Caccianiga, A. Moretti, J. W. Broderick, J. K. Leung, S. Paterson, F. Rigamonti, N. Seymour, S. Belladitta, G. Drouart, T. J. Galvin and N. Hurley-WalkerAstronomy & Astrophysics 687 A242 (2024)
https://doi.org/10.1051/0004-6361/202449369
A benchmark for extreme conditions of the multiphase interstellar medium in the most luminous hot dust-obscured galaxy at z = 4.6
Román Fernández Aranda, Tanio Díaz Santos, Evanthia Hatziminaoglou, Roberto J. Assef, Manuel Aravena, Peter R. M. Eisenhardt, Carl Ferkinhoff, Antonio Pensabene, Thomas Nikola, Paola Andreani, Amit Vishwas, Gordon J. Stacey, Roberto Decarli, Andrew W. Blain, Drew Brisbin, Vassilis Charmandaris, Hyunsung D. Jun, Guodong Li, Mai Liao, Lee R. Martin, Daniel Stern, Chao-Wei Tsai, Jingwen Wu and Dejene ZewdieAstronomy & Astrophysics 682 A166 (2024)
https://doi.org/10.1051/0004-6361/202347869
The X-ray enhancements of radio-loud quasars at high redshift: new results at z = 4–7
Zihao Zuo, Shifu Zhu, W N Brandt, Gordon P Garmire, F Vito, Jianfeng Wu and Yongquan XueMonthly Notices of the Royal Astronomical Society 530 (1) 360 (2024)
https://doi.org/10.1093/mnras/stae656
4617 (2024)
https://doi.org/10.1007/978-981-19-6960-7_116
Quasars as standard candles
Bartolomeo Trefoloni, Elisabeta Lusso, Emanuele Nardini, Guido Risaliti, Alessandro Marconi, Giada Bargiacchi, Andrea Sacchi, Paola Pietrini and Matilde SignoriniAstronomy & Astrophysics 689 A109 (2024)
https://doi.org/10.1051/0004-6361/202348938
A new binning method to choose a standard set of Quasars
M.G. Dainotti, A.Ł. Lenart, M. Ghodsi Yengejeh, S. Chakraborty, N. Fraija, E. Di Valentino and G. MontaniPhysics of the Dark Universe 44 101428 (2024)
https://doi.org/10.1016/j.dark.2024.101428
X-ray emission from a rapidly accreting narrow-line Seyfert 1 galaxy at z = 6.56
J. Wolf, K. Nandra, M. Salvato, et al.Astronomy & Astrophysics 669 A127 (2023)
https://doi.org/10.1051/0004-6361/202244688
Testing AGN outflow and accretion models with C iv and He ii emission line demographics in z ≈ 2 quasars
Matthew J Temple, James H Matthews, Paul C Hewett, et al.Monthly Notices of the Royal Astronomical Society 523 (1) 646 (2023)
https://doi.org/10.1093/mnras/stad1448
Is the X-ray bright z = 5.5 quasar SRGE J170245.3+130104 a blazar?
Tao An, Ailing Wang, Yuanqi Liu, et al.Monthly Notices of the Royal Astronomical Society 519 (3) 4047 (2023)
https://doi.org/10.1093/mnras/stac3774
LBT-MODS spectroscopy of high-redshift candidates in the Chandra J1030 field
Stefano Marchesi, Marco Mignoli, Roberto Gilli, et al.Astronomy & Astrophysics 673 A97 (2023)
https://doi.org/10.1051/0004-6361/202245513
Constraints on the X-ray luminosity function of AGN at z = 5.7–6.4 with the Extragalactic Serendipitous Swift Survey
C L Barlow-Hall, J Delaney, J Aird, et al.Monthly Notices of the Royal Astronomical Society 519 (4) 6055 (2023)
https://doi.org/10.1093/mnras/stad100
On the Cosmic Evolution of AGN Obscuration and the X-Ray Luminosity Function: XMM-Newton and Chandra Spectral Analysis of the 31.3 deg2 Stripe 82X
Alessandro Peca, Nico Cappelluti, C. Megan Urry, Stephanie LaMassa, Stefano Marchesi, Tonima Tasnim Ananna, Mislav Baloković, David Sanders, Connor Auge, Ezequiel Treister, Meredith Powell, Tracey Jane Turner, Allison Kirkpatrick and Chuan TianThe Astrophysical Journal 943 (2) 162 (2023)
https://doi.org/10.3847/1538-4357/acac28
The extremely X-ray luminous radio-loud quasar CFHQS J142952 + 544717 at z = 6.18 under Chandra high-angular resolution lens
G Migliori, A Siemiginowska, M Sobolewska, C C Cheung, Ł Stawarz, D Schwartz, B Snios, A Saxena and V KashyapMonthly Notices of the Royal Astronomical Society 524 (1) 1087 (2023)
https://doi.org/10.1093/mnras/stad1959
Quasars: Standard Candles up to z = 7.5 with the Precision of Supernovae Ia
M. G. Dainotti, G. Bargiacchi, A. Ł. Lenart, S. Nagataki and S. CapozzielloThe Astrophysical Journal 950 (1) 45 (2023)
https://doi.org/10.3847/1538-4357/accea0
HYPerluminous quasars at the Epoch of ReionizatION (HYPERION): A new regime for the X-ray nuclear properties of the first quasars
L. Zappacosta, E. Piconcelli, F. Fiore, I. Saccheo, R. Valiante, C. Vignali, F. Vito, M. Volonteri, M. Bischetti, A. Comastri, C. Done, M. Elvis, E. Giallongo, F. La Franca, G. Lanzuisi, M. Laurenti, G. Miniutti, A. Bongiorno, M. Brusa, F. Civano, S. Carniani, V. D’Odorico, C. Feruglio, S. Gallerani, R. Gilli, et al.Astronomy & Astrophysics 678 A201 (2023)
https://doi.org/10.1051/0004-6361/202346795
Handbook of X-ray and Gamma-ray Astrophysics
Elisabeta Lusso, Rosa Valiante and Fabio VitoHandbook of X-ray and Gamma-ray Astrophysics 1 (2023)
https://doi.org/10.1007/978-981-16-4544-0_116-1
Quasars and the Intergalactic Medium at Cosmic Dawn
Xiaohui Fan, Eduardo Bañados and Robert A. SimcoeAnnual Review of Astronomy and Astrophysics 61 (1) 373 (2023)
https://doi.org/10.1146/annurev-astro-052920-102455
The Fraction and Kinematics of Broad Absorption Line Quasars across Cosmic Time
Manuela Bischetti, Fabrizio Fiore, Chiara Feruglio, Valentina D’Odorico, Nahum Arav, Tiago Costa, Kastytis Zubovas, George Becker, Sarah E. I. Bosman, Guido Cupani, Rebecca Davies, Anna-Christina Eilers, Emanuele Paolo Farina, Andrea Ferrara, Massimo Gaspari, Chiara Mazzucchelli, Masafusa Onoue, Enrico Piconcelli, Maria Vittoria Zanchettin and Yongda ZhuThe Astrophysical Journal 952 (1) 44 (2023)
https://doi.org/10.3847/1538-4357/accea4
A Bias-free Cosmological Analysis with Quasars Alleviating H 0 Tension
Aleksander Łukasz Lenart, Giada Bargiacchi, Maria Giovanna Dainotti, Shigehiro Nagataki and Salvatore CapozzielloThe Astrophysical Journal Supplement Series 264 (2) 46 (2023)
https://doi.org/10.3847/1538-4365/aca404
The Pan-STARRS1 z > 5.6 Quasar Survey. II. Discovery of 55 Quasars at 5.6 < z < 6.5
Eduardo Bañados, Jan-Torge Schindler, Bram P. Venemans, Thomas Connor, Roberto Decarli, Emanuele Paolo Farina, Chiara Mazzucchelli, Romain A. Meyer, Daniel Stern, Fabian Walter, Xiaohui Fan, Joseph F. Hennawi, Yana Khusanova, Nidia Morrell, Riccardo Nanni, Gaël Noirot, Antonio Pensabene, Hans-Walter Rix, Joseph Simon, Gijs A. Verdoes Kleijn, Zhang-Liang 彰亮 Xie 谢, Da-Ming 达明 Yang 羊 and Andrew ConnorThe Astrophysical Journal Supplement Series 265 (1) 29 (2023)
https://doi.org/10.3847/1538-4365/acb3c7
A dusty compact object bridging galaxies and quasars at cosmic dawn
S. Fujimoto, G. B. Brammer, D. Watson, et al.Nature 604 (7905) 261 (2022)
https://doi.org/10.1038/s41586-022-04454-1
Deep XMM-Newton Observations of an X-ray Weak Broad Absorption Line Quasar at z = 6.5
Jinyi Yang, Xiaohui Fan, Feige Wang, Giorgio Lanzuisi, Riccardo Nanni, Massimo Cappi, George Chartas, Mauro Dadina, Roberto Decarli, Xiangyu Jin, Charles R. Keeton, Bram P. Venemans, Fabian Walter, Ran Wang, Xue-Bing Wu, Minghao Yue and Ann ZabludoffThe Astrophysical Journal Letters 924 (2) L25 (2022)
https://doi.org/10.3847/2041-8213/ac45f2
Cosmological evolution of gas and supermassive black holes in idealized isolated haloes
Shashank Dattathri and Prateek SharmaMonthly Notices of the Royal Astronomical Society 514 (1) 826 (2022)
https://doi.org/10.1093/mnras/stac1342
The formation of the first quasars: the black hole seeds, accretion, and feedback models
Qirong Zhu, Yuexing Li, Yiting Li, et al.Monthly Notices of the Royal Astronomical Society 514 (4) 5583 (2022)
https://doi.org/10.1093/mnras/stac1556
Probing the parameters of the intergalactic medium using quasars
Tony Dalton, Simon L Morris, Michele Fumagalli and Efrain GatuzzMonthly Notices of the Royal Astronomical Society 513 (1) 822 (2022)
https://doi.org/10.1093/mnras/stac814
Unveiling the Universe with emerging cosmological probes
Michele Moresco, Lorenzo Amati, Luca Amendola, et al.Living Reviews in Relativity 25 (1) (2022)
https://doi.org/10.1007/s41114-022-00040-z
Probing quasar lifetimes with proximate 21-centimetre absorption in the diffuse intergalactic medium at redshifts z ≥ 6
Tomáš Šoltinský, James S Bolton, Margherita Molaro, et al.Monthly Notices of the Royal Astronomical Society 519 (2) 3027 (2022)
https://doi.org/10.1093/mnras/stac3710
An X-ray fading, UV brightening QSO at z ≈ 6
F. Vito, M. Mignoli, R. Gilli, et al.Astronomy & Astrophysics 663 A159 (2022)
https://doi.org/10.1051/0004-6361/202243403
Exploring Gravitationally Lensed z ≳ 6 X-Ray Active Galactic Nuclei Behind the RELICS Clusters
Ákos Bogdán, Orsolya E. Kovács, Christine Jones, William R. Forman, Ralph P. Kraft, Victoria Strait, Dan Coe and Maruša BradačThe Astrophysical Journal 927 (1) 34 (2022)
https://doi.org/10.3847/1538-4357/ac4ae5
Feedback effect on the observable properties of z > 6 AGN
F Vito, F Di Mascia, S Gallerani, et al.Monthly Notices of the Royal Astronomical Society 514 (2) 1672 (2022)
https://doi.org/10.1093/mnras/stac1422
Handbook of X-ray and Gamma-ray Astrophysics
W. N. Brandt and G. YangHandbook of X-ray and Gamma-ray Astrophysics 1 (2022)
https://doi.org/10.1007/978-981-16-4544-0_130-1
The Fundamental Planes of black hole activity for radio-loud and radio-quiet quasars
Luis Gabriel C Bariuan, Bradford Snios, Małgosia Sobolewska, Aneta Siemiginowska and Daniel A SchwartzMonthly Notices of the Royal Astronomical Society 513 (4) 4673 (2022)
https://doi.org/10.1093/mnras/stac1153
The Contribution of AGN Accretion Disks to Hydrogen Reionization
Grisha Zeltyn and Benny TrakhtenbrotThe Astrophysical Journal 929 (1) 21 (2022)
https://doi.org/10.3847/1538-4357/ac4783
BASS XXXII: Studying the Nuclear Millimeter-wave Continuum Emission of AGNs with ALMA at Scales ≲100–200 pc
Taiki Kawamuro, Claudio Ricci, Masatoshi Imanishi, Richard F. Mushotzky, Takuma Izumi, Federica Ricci, Franz E. Bauer, Michael J. Koss, Benny Trakhtenbrot, Kohei Ichikawa, Alejandra F. Rojas, Krista Lynne Smith, Taro Shimizu, Kyuseok Oh, Jakob S. den Brok, Shunsuke Baba, Mislav Baloković, Chin-Shin Chang, Darshan Kakkad, Ryan W. Pfeifle, George C. Privon, Matthew J. Temple, Yoshihiro Ueda, Fiona Harrison, Meredith C. Powell, et al.The Astrophysical Journal 938 (1) 87 (2022)
https://doi.org/10.3847/1538-4357/ac8794
The X–shooter/ALMA Sample of Quasars in the Epoch of Reionization. II. Black Hole Masses, Eddington Ratios, and the Formation of the First Quasars
Emanuele Paolo Farina, Jan-Torge Schindler, Fabian Walter, Eduardo Bañados, Frederick B. Davies, Roberto Decarli, Anna-Christina Eilers, Xiaohui Fan, Joseph F. Hennawi, Chiara Mazzucchelli, Romain A. Meyer, Benny Trakhtenbrot, Marta Volonteri, Feige Wang, Gábor Worseck, Jinyi Yang, Thales A. Gutcke, Bram P. Venemans, Sarah E. I. Bosman, Tiago Costa, Gisella De Rosa, Alyssa B. Drake and Masafusa OnoueThe Astrophysical Journal 941 (2) 106 (2022)
https://doi.org/10.3847/1538-4357/ac9626
Can X-Ray Observations Improve Optical-UV-based Accretion-rate Estimates for Quasars?
Andrea Marlar, Ohad Shemmer, Michael S. Brotherton, Gordon T. Richards and Cooper DixThe Astrophysical Journal 931 (1) 41 (2022)
https://doi.org/10.3847/1538-4357/ac5f58
Milliarcsecond X-Ray Astrometry to Resolve Inner Regions of AGN at z > 1 Using Gravitational Lensing
Cristiana Spingola, Daniel Schwartz and Anna BarnackaThe Astrophysical Journal 931 (1) 68 (2022)
https://doi.org/10.3847/1538-4357/ac68eb
X-ray properties of high-redshift Radio Loud and Radio Quiet Quasars observed by Chandra
F. Shaban, A. Siemiginowska, R.M. Suleiman, M.S. El-Nawawy and A. AliJournal of High Energy Astrophysics 36 152 (2022)
https://doi.org/10.1016/j.jheap.2022.10.002
https://doi.org/10.12794/metadc2048651
Revealing the Accretion Physics of Supermassive Black Holes at Redshift z ∼ 7 with Chandra and Infrared Observations
Feige Wang, Xiaohui Fan, Jinyi Yang, Chiara Mazzucchelli, Xue-Bing Wu, Jiang-Tao Li, Eduardo Bañados, Emanuele Paolo Farina, Riccardo Nanni, Yanli Ai, Fuyan Bian, Frederick B. Davies, Roberto Decarli, Joseph F. Hennawi, Jan-Torge Schindler, Bram Venemans and Fabian WalterThe Astrophysical Journal 908 (1) 53 (2021)
https://doi.org/10.3847/1538-4357/abcc5e
A Chandra survey of z ≥ 4.5 quasars
Jiang-Tao Li, Feige Wang, Jinyi Yang, et al.Monthly Notices of the Royal Astronomical Society 504 (2) 2767 (2021)
https://doi.org/10.1093/mnras/stab1042
Infrared emission of z ∼ 6 galaxies: AGN imprints
F Di Mascia, S Gallerani, C Behrens, et al.Monthly Notices of the Royal Astronomical Society 503 (2) 2349 (2021)
https://doi.org/10.1093/mnras/stab528
Host galaxies of high-redshift quasars: SMBH growth and feedback
Milena Valentini, Simona Gallerani and Andrea FerraraMonthly Notices of the Royal Astronomical Society 507 (1) 1 (2021)
https://doi.org/10.1093/mnras/stab1992
Formation of supermassive black hole seeds in nuclear star clusters via gas accretion and runaway collisions
Arpan Das, Dominik R G Schleicher, Nathan W C Leigh and Tjarda C N BoekholtMonthly Notices of the Royal Astronomical Society 503 (1) 1051 (2021)
https://doi.org/10.1093/mnras/stab402
First constraints on the AGN X-ray luminosity function at z ~ 6 from an eROSITA-detected quasar
J. Wolf, K. Nandra, M. Salvato, et al.Astronomy & Astrophysics 647 A5 (2021)
https://doi.org/10.1051/0004-6361/202039724
X-Ray Evidence Against the Hypothesis that the Hyperluminous z = 6.3 Quasar J0100+2802 is Lensed
Thomas Connor, Daniel Stern, Eduardo Bañados and Chiara MazzucchelliThe Astrophysical Journal Letters 922 (2) L24 (2021)
https://doi.org/10.3847/2041-8213/ac37b5
Discovery of the Most X-ray Luminous Quasar SRGE J170245.3+130104 at Redshift $$\boldsymbol{z\approx 5.5}$$
G. A. Khorunzhev, A. V. Meshcheryakov, P. S. Medvedev, et al.Astronomy Letters 47 (3) 123 (2021)
https://doi.org/10.1134/S1063773721030026
High-redshift SMBHs can grow from stellar-mass seeds via chaotic accretion
Kastytis Zubovas and Andrew KingMonthly Notices of the Royal Astronomical Society 501 (3) 4289 (2021)
https://doi.org/10.1093/mnras/stab004
Enhanced X-Ray Emission from the Most Radio-powerful Quasar in the Universe’s First Billion Years
Thomas Connor, Eduardo Bañados, Daniel Stern, Chris Carilli, Andrew Fabian, Emmanuel Momjian, Sofía Rojas-Ruiz, Roberto Decarli, Emanuele Paolo Farina, Chiara Mazzucchelli and Hannah P. EarnshawThe Astrophysical Journal 911 (2) 120 (2021)
https://doi.org/10.3847/1538-4357/abe710
Chandra and Magellan/FIRE follow-up observations of PSO167–13: An X-ray weak QSO at z = 6.515
F. Vito, W. N. Brandt, F. Ricci, et al.Astronomy & Astrophysics 649 A133 (2021)
https://doi.org/10.1051/0004-6361/202140399
Chandra Detection of Three X-Ray Bright Quasars at z > 5
Jiang-Tao Li, Feige Wang, Jinyi Yang, Yuchen Zhang, Yuming Fu, Fuyan Bian, Joel N. Bregman, Xiaohui Fan, Qiong Li, Xue-Bing Wu and Xiaodi YuThe Astrophysical Journal 906 (2) 135 (2021)
https://doi.org/10.3847/1538-4357/abc750
Discovery of Candidate X-Ray Jets in High-redshift Quasars
Bradford Snios, Daniel A. Schwartz, Aneta Siemiginowska, Małgosia Sobolewska, Mark Birkinshaw, C. C. Cheung, Doug B. Gobeille, Herman L. Marshall, Giulia Migliori, John F. C. Wardle and Diana M. WorrallThe Astrophysical Journal 914 (2) 130 (2021)
https://doi.org/10.3847/1538-4357/abfe64
Exploratory X-Ray Monitoring of Luminous Radio-quiet Quasars at High Redshift: Extended Time-series Analyses and Stacked Imaging Spectroscopy
Marcus O. Thomas, Ohad Shemmer, W. N. Brandt, Maurizio Paolillo, Shai Kaspi, Cristian Vignali, Paulina Lira and Donald P. SchneiderThe Astrophysical Journal 923 (1) 111 (2021)
https://doi.org/10.3847/1538-4357/ac2e00
Accretion History of AGNs. III. Radiative Efficiency and AGN Contribution to Reionization
Tonima Tasnim Ananna, C. Megan Urry, Ezequiel Treister, Ryan C. Hickox, Francesco Shankar, Claudio Ricci, Nico Cappelluti, Stefano Marchesi and Tracey Jane TurnerThe Astrophysical Journal 903 (2) 85 (2020)
https://doi.org/10.3847/1538-4357/abb815
The first blazar observed at z > 6
S. Belladitta, A. Moretti, A. Caccianiga, et al.Astronomy & Astrophysics 635 L7 (2020)
https://doi.org/10.1051/0004-6361/201937395
Probing the Full CO Spectral Line Energy Distribution (SLED) in the Nuclear Region of a Quasar-starburst System at z = 6.003
Jianan Li, Ran Wang, Dominik Riechers, Fabian Walter, Roberto Decarli, Bram P. Venamans, Roberto Neri, Yali Shao, Xiaohui Fan, Yu Gao, Chris L. Carilli, Alain Omont, Pierre Cox, Karl M. Menten, Jeff Wagg, Frank Bertoldi and Desika NarayananThe Astrophysical Journal 889 (2) 162 (2020)
https://doi.org/10.3847/1538-4357/ab65fa
Mock catalogs for the extragalactic X-ray sky: Simulating AGN surveys with ATHENA and with the AXIS probe
S. Marchesi, R. Gilli, G. Lanzuisi, et al.Astronomy & Astrophysics 642 A184 (2020)
https://doi.org/10.1051/0004-6361/202038622
X-Ray Observations of a [C ii]-bright, z = 6.59 Quasar/Companion System
Thomas Connor, Eduardo Bañados, Chiara Mazzucchelli, Daniel Stern, Roberto Decarli, Xiaohui Fan, Emanuele Paolo Farina, Elisabeta Lusso, Marcel Neeleman and Fabian WalterThe Astrophysical Journal 900 (2) 189 (2020)
https://doi.org/10.3847/1538-4357/abaab9
X-Ray Properties of Young Radio Quasars at z > 4.5
Bradford Snios, Aneta Siemiginowska, Małgosia Sobolewska, C. C. Cheung, Vinay Kashyap, Giulia Migliori, Daniel A. Schwartz, Łukasz Stawarz and Diana M. WorrallThe Astrophysical Journal 899 (2) 127 (2020)
https://doi.org/10.3847/1538-4357/aba2ca
Chandra reveals a luminous Compton-thick QSO powering a Lyα blob in a z = 4 starbursting protocluster
F. Vito, W. N. Brandt, B. D. Lehmer, et al.Astronomy & Astrophysics 642 A149 (2020)
https://doi.org/10.1051/0004-6361/202038848
Parsec-scale properties of the radio brightest jetted AGN atz> 6
C. Spingola, D. Dallacasa, S. Belladitta, et al.Astronomy & Astrophysics 643 L12 (2020)
https://doi.org/10.1051/0004-6361/202039458
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
SRG/eROSITA uncovers the most X-ray luminous quasar at z > 6
P Medvedev, S Sazonov, M Gilfanov, et al.Monthly Notices of the Royal Astronomical Society 497 (2) 1842 (2020)
https://doi.org/10.1093/mnras/staa2051
On the Absence of High-redshift AGNs: Little Growth in the Supermassive Black Hole Population at High Redshifts
L. L. Cowie, A. J. Barger, F. E. Bauer and J. González-LópezThe Astrophysical Journal 891 (1) 69 (2020)
https://doi.org/10.3847/1538-4357/ab6aaa
Do stellar-mass and super-massive black holes have similar dining habits?
R. Arcodia, G. Ponti, A. Merloni and K. NandraAstronomy & Astrophysics 638 A100 (2020)
https://doi.org/10.1051/0004-6361/202037969
Quasars as standard candles
E. Lusso, G. Risaliti, E. Nardini, et al.Astronomy & Astrophysics 642 A150 (2020)
https://doi.org/10.1051/0004-6361/202038899
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
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
X-ray properties of z ≳ 6.5 quasars
E Pons, R G McMahon, M Banerji and S L ReedMonthly Notices of the Royal Astronomical Society 491 (3) 3884 (2020)
https://doi.org/10.1093/mnras/stz3275
The most luminous blue quasars at 3.0 < z < 3.3
E. Nardini, E. Lusso, G. Risaliti, et al.Astronomy & Astrophysics 632 A109 (2019)
https://doi.org/10.1051/0004-6361/201936911
X-Ray Observations of a z ∼ 6.2 Quasar/Galaxy Merger
Thomas Connor, Eduardo Bañados, Daniel Stern, Roberto Decarli, Jan-Torge Schindler, Xiaohui Fan, Emanuele Paolo Farina, Chiara Mazzucchelli, John S. Mulchaey and Fabian WalterThe Astrophysical Journal 887 (2) 171 (2019)
https://doi.org/10.3847/1538-4357/ab5585