Quasar (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Quasar" in English language version.

Last modified: 02:44:51, 23 August 2026 (UTC)

Ref.Un. Ref.Website

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5143doi.org

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4842adsabs.harvard.edu

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3330arxiv.org

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2924semanticscholar.org

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2322worldcat.org

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75nih.gov

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54caltech.edu

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54nasa.gov

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adsabs.harvard.edu (Global: 14^th place; English: 9^th place)

ui.adsabs.harvard.edu

Wu, Xue-Bing; et al. (2015). "An ultraluminous quasar with a twelve-billion-solar-mass black hole at redshift 6.30". Nature. 518 (7540): 512–515. arXiv:1502.07418. Bibcode:2015Natur.518..512W. doi:10.1038/nature14241. PMID 25719667. S2CID 4455954.
Frank, Juhan; King, Andrew; Raine, Derek J. (February 2002). Accretion Power in Astrophysics (Third ed.). Cambridge, UK: Cambridge University Press. Bibcode:2002apa..book.....F. ISBN 0521620538.
Bahcall, J. N.; et al. (1997). "Hubble Space Telescope Images of a Sample of 20 Nearby Luminous Quasars". The Astrophysical Journal. 479 (2): 642–658. arXiv:astro-ph/9611163. Bibcode:1997ApJ...479..642B. doi:10.1086/303926. S2CID 15318893.
Storey-Fisher, Kate; Hogg, David W.; Rix, Hans-Walter; Eilers, Anna-Christina; Fabbian, Giulio; Blanton, Michael; Alonso, David (2024). "Quaia, the Gaia-unWISE Quasar Catalog: An All-Sky Spectroscopic Quasar Sample". AAS Journals. 964 (1): 69. arXiv:2306.17749. Bibcode:2024ApJ...964...69S. doi:10.3847/1538-4357/ad1328.
Whalen, Daniel J.; Latif, Muhammad A.; Mezcua, Mar (2023-10-01). "Radio Emission From a z = 10.1 Black Hole in UHZ1". The Astrophysical Journal. 956 (2): 133. arXiv:2308.03837. Bibcode:2023ApJ...956..133W. doi:10.3847/1538-4357/acf92c. ISSN 0004-637X.
Schmidt, Maarten; Schneider, Donald; Gunn, James (1995). "Spectroscopic CCD Surveys for Quasars at Large Redshift. IV. Evolution of the Luminosity Function from Quasars Detected by Their Lyman-Alpha Emission". The Astronomical Journal. 110: 68. Bibcode:1995AJ....110...68S. doi:10.1086/117497.
Chiu, Hong-Yee (1964). "Gravitational collapse". Physics Today. 17 (5): 21. Bibcode:1964PhT....17e..21C. doi:10.1063/1.3051610.
Shields, Gregory A. (1999). "A Brief History of Active Galactic Nuclei". The Publications of the Astronomical Society of the Pacific. 111 (760): 661–678. arXiv:astro-ph/9903401. Bibcode:1999PASP..111..661S. doi:10.1086/316378. S2CID 18953602. Retrieved 3 October 2014.
Matthews, Thomas A.; Sandage, Allan R. (July 1963). "Optical Identification of 3c 48, 3c 196, and 3c 286 with Stellar Objects". The Astrophysical Journal. 138: 30. Bibcode:1963ApJ...138...30M. doi:10.1086/147615. ISSN 0004-637X.
Schmidt, M. (March 1963). "3C 273 : A Star-Like Object with Large Red-Shift". Nature. 197 (4872): 1040. Bibcode:1963Natur.197.1040S. doi:10.1038/1971040a0. ISSN 0028-0836. S2CID 4186361.
Shields, G. A. (1999). "A Brief History of Active Galactic Nuclei". Publications of the Astronomical Society of the Pacific. 111 (760): 661. arXiv:astro-ph/9903401. Bibcode:1999PASP..111..661S. doi:10.1086/316378. S2CID 18953602.
Chandrasekhar, S. (August 1964). "The Dynamical Instability of Gaseous Masses Approaching the Schwarzschild Limit in General Relativity". The Astrophysical Journal. 140 (2): 417. Bibcode:1964ApJ...140..417C. doi:10.1086/147938. ISSN 0004-637X. S2CID 120526651.
Greenstein, Jesse L.; Schmidt, Maarten (1964). "The Quasi-Stellar Radio Sources 3C 48 and 3C 273". The Astrophysical Journal. 140: 1. Bibcode:1964ApJ...140....1G. doi:10.1086/147889. S2CID 123147304.
Gray, G. K. (1965). "Quasars and Antimatter". Nature. 206 (4980): 175. Bibcode:1965Natur.206..175G. doi:10.1038/206175a0. ISSN 0028-0836. S2CID 4171869.
Santilli, Ruggero Maria (2006). Isodual theory of antimatter: with applications to antigravity, grand unification and cosmology. Dordrecht: Springer. p. 304. Bibcode:2006itaa.book.....S. ISBN 978-1-4020-4517-2.
Gunn, James E. (March 1971). "On the Distances of the Quasi-Stellar Objects". The Astrophysical Journal. 164: L113. Bibcode:1971ApJ...164L.113G. doi:10.1086/180702.
Kristian, Jerome (January 1973). "Quasars as Events in the Nuclei of Galaxies: the Evidence from Direct Photographs". The Astrophysical Journal. 179: L61. Bibcode:1973ApJ...179L..61K. doi:10.1086/181117.
de Swart, J. G.; Bertone, G.; van Dongen, J. (2017). "How dark matter came to matter". Nature Astronomy. 1 (59): 0059. arXiv:1703.00013. Bibcode:2017NatAs...1E..59D. doi:10.1038/s41550-017-0059. S2CID 119092226.
Secrest, Nathan; et al. (25 February 2021). "A Test of the Cosmological Principle with Quasars". The Astrophysical Journal Letters. 908 (2): L51. arXiv:2009.14826. Bibcode:2021ApJ...908L..51S. doi:10.3847/2041-8213/abdd40.
Di Matteo, Tiziana; et al. (10 February 2005). "Energy input from quasars regulates the growth and activity of black holes and their host galaxies". Nature. 433 (7026): 604–607. arXiv:astro-ph/0502199. Bibcode:2005Natur.433..604D. doi:10.1038/nature03335. PMID 15703739. S2CID 3007350.
Barthel, Peter D. (1989). "Is every quasar beamed?". The Astrophysical Journal. 336: 606. Bibcode:1989ApJ...336..606B. doi:10.1086/167038. ISSN 0004-637X.
Bañados, Eduardo; et al. (2018). "An 800-million-solar-mass black hole in a significantly neutral Universe at a redshift of 7.5". Nature. 553 (7689): 473–476. arXiv:1712.01860. Bibcode:2018Natur.553..473B. doi:10.1038/nature25180. ISSN 0028-0836. PMID 29211709. S2CID 205263326.
Anglés-Alcázar, Daniel; et al. (August 2021). "Cosmological Simulations of Quasar Fueling to Subparsec Scales Using Lagrangian Hyper-refinement". The Astrophysical Journal. 917 (2): 53. arXiv:2008.12303. Bibcode:2021ApJ...917...53A. doi:10.3847/1538-4357/ac09e8. ISSN 0004-637X. S2CID 221370537.
Gnedin, Nickolay Y.; Ostriker, Jeremiah P. (1997). "Reionization of the Universe and the Early Production of Metals". The Astrophysical Journal. 486 (2): 581–598. arXiv:astro-ph/9612127. Bibcode:1997ApJ...486..581G. doi:10.1086/304548. ISSN 0004-637X. S2CID 5758398.
Bouwens, R. J.; et al. (2012). "Lower-luminosity Galaxies Could Reionize the Universe: Very Steep Faint-end Slopes to the UV Luminosity Functions at z ⩾ 5–8 from the HUDF09 WFC3/IR Observations". The Astrophysical Journal. 752 (1): L5. arXiv:1105.2038. Bibcode:2012ApJ...752L...5B. doi:10.1088/2041-8205/752/1/L5. ISSN 2041-8205. S2CID 118856513.
Madau, Piero; et al. (April 1999). "Radiative Transfer in a Clumpy Universe. III. The Nature of Cosmological Ionizing Sources". The Astrophysical Journal. 514 (2): 648–659. arXiv:astro-ph/9809058. Bibcode:1999ApJ...514..648M. doi:10.1086/306975. ISSN 0004-637X. S2CID 17932350.
Shapiro, Paul R.; Giroux, Mark L. (October 1987). "Cosmological H II regions and the photoionization of the intergalactic medium". The Astrophysical Journal. 321: L107. Bibcode:1987ApJ...321L.107S. doi:10.1086/185015. ISSN 0004-637X.
Fan, Xiaohui; et al. (December 2001). "A Survey of z > 5.8 Quasars in the Sloan Digital Sky Survey. I. Discovery of Three New Quasars and the Spatial Density of Luminous Quasars at z ~ 6". The Astronomical Journal. 122 (6): 2833–2849. arXiv:astro-ph/0108063. Bibcode:2001AJ....122.2833F. doi:10.1086/324111. S2CID 119339804.
Zakamska, Nadia; et al. (2003). "Candidate Type II Quasars from the Sloan Digital Sky Survey. I. Selection and Optical Properties of a Sample at 0.3 < Z < 0.83". The Astronomical Journal. 126 (5): 2125. arXiv:astro-ph/0309551. Bibcode:2003AJ....126.2125Z. doi:10.1086/378610. S2CID 13477694.
Glikman, Eilat; et al. (2007). "The FIRST-2MASS Red Quasar Survey". The Astrophysical Journal. 667 (2): 673. arXiv:0706.3222. Bibcode:2007ApJ...667..673G. doi:10.1086/521073. S2CID 16578760.
Diamond-Stanic, Aleksandar; et al. (2009). "High-redshift SDSS Quasars with Weak Emission Lines". The Astrophysical Journal. 699 (1): 782–799. arXiv:0904.2181. Bibcode:2009ApJ...699..782D. doi:10.1088/0004-637X/699/1/782. S2CID 6735531.
Blandford, R. D.; Narayan, R. (September 1992). "Cosmological Applications of Gravitational Lensing". Annual Review of Astronomy and Astrophysics. 30 (1): 311–358. Bibcode:1992ARA&A..30..311B. doi:10.1146/annurev.aa.30.090192.001523. ISSN 0066-4146.
Henry, J. Patrick; Heasley, J. N. (May 1986). "High-resolution imaging from Mauna Kea: the triple quasar in 0.3-arc s seeing". Nature. 321 (6066): 139–142. Bibcode:1986Natur.321..139H. doi:10.1038/321139a0. ISSN 0028-0836. S2CID 4244246.
Treu, Tommaso; Marshall, Philip J. (December 2016). "Time delay cosmography". The Astronomy and Astrophysics Review. 24 (1) 11. arXiv:1605.05333. Bibcode:2016A&ARv..24...11T. doi:10.1007/s00159-016-0096-8. eISSN 1432-0754. ISSN 0935-4956. 11.
Collaboration, TDCOSMO; et al. (2025). "TDCOSMO 2025: Cosmological constraints from strong lensing time delays". Astronomy & Astrophysics. 704: A63. arXiv:2506.03023. Bibcode:2025A&A...704A..63T. doi:10.1051/0004-6361/202555801.
Chen, Yu-Ching; Liu, Xin; Foord, Adi; Shen, Yue; Oguri, Masamune; Chen, Nianyi; Di Matteo, Tiziana; Holgado, Miguel; Hwang, Hsiang-Chih; Zakamska, Nadia (2023). "A close quasar pair in a disk–disk galaxy merger at z = 2.17". Nature. 616 (7955): 45–49. arXiv:2209.11249. Bibcode:2023Natur.616...45C. doi:10.1038/s41586-023-05766-6. PMID 37020007.
Myers, Adam D.; et al. (2008). "Quasar Clustering at 25 h⁻¹ kpc from a Complete Sample of Binaries". The Astrophysical Journal. 678 (2): 635–646. arXiv:0709.3474. Bibcode:2008ApJ...678..635M. doi:10.1086/533491. ISSN 0004-637X. S2CID 15747141.
Shen, Yue; Chen, Yu-Ching; Hwang, Hsiang-Chih; Liu, Xin; Zakamska, Nadia; Oguri, Masamune; Li, Jennifer I-Hsiu; Lazio, Joseph; Breiding, Peter (2021). "A hidden population of high-redshift double quasars unveiled by astrometry". Nature Astronomy. 5 (6): 569–574. arXiv:2105.03298. Bibcode:2021NatAs...5..569S. doi:10.1038/s41550-021-01323-1.
Mannucci, F.; Pancino, E.; Belfiore, F.; Cicone, C.; Ciurlo, A.; Cresci, G.; Lusso, E.; Marasco, A.; Marconi, A.; Nardini, E.; Pinna, E.; Severgnini, P.; Saracco, P.; Tozzi, G.; Yeh, S. (2022). "Unveiling the population of dual and lensed active galactic nuclei at sub-arcsec separations". Nature Astronomy. 6 (10): 1185–1192. arXiv:2203.11234. Bibcode:2022NatAs...6.1185M. doi:10.1038/s41550-022-01761-5.
Djorgovski, S. G.; et al. (2007). "Discovery of a Probable Physical Triple Quasar". The Astrophysical Journal. 662 (1): L1–L5. arXiv:astro-ph/0701155. Bibcode:2007ApJ...662L...1D. doi:10.1086/519162. ISSN 0004-637X. S2CID 22705420.
Farina, E. P.; et al. (2013). "Caught in the act: discovery of a physical quasar triplet". Monthly Notices of the Royal Astronomical Society. 431 (2): 1019–1025. arXiv:1302.0849. Bibcode:2013MNRAS.431.1019F. doi:10.1093/mnras/stt209. ISSN 1365-2966. S2CID 54606964.
Hennawi, Joseph F.; et al. (2015). "Quasar quartet embedded in giant nebula reveals rare massive structure in distant universe". Science. 348 (6236): 779–783. arXiv:1505.03786. Bibcode:2015Sci...348..779H. doi:10.1126/science.aaa5397. ISSN 0036-8075. PMID 25977547. S2CID 35281881.

aquaphoenix.com (Global: low place; English: low place)

neutrino.aquaphoenix.com

"7. HIGH-ENERGY ASTROPHYSICS ELECTROMAGNETIC RADIATION". Neutrino.aquaphoenix.com. Archived from the original on 2011-07-07. Retrieved 2011-07-01.

archive.org (Global: 6^th place; English: 6^th place)

Grupen, Claus; Cowan, Glen (2005). Astroparticle physics. Berlin ; New York: Springer. pp. 11–12. ISBN 978-3-540-25312-9. OCLC 60561678.

arxiv.org (Global: 49^th place; English: 31^st place)

Wu, Xue-Bing; et al. (2015). "An ultraluminous quasar with a twelve-billion-solar-mass black hole at redshift 6.30". Nature. 518 (7540): 512–515. arXiv:1502.07418. Bibcode:2015Natur.518..512W. doi:10.1038/nature14241. PMID 25719667. S2CID 4455954.
Bahcall, J. N.; et al. (1997). "Hubble Space Telescope Images of a Sample of 20 Nearby Luminous Quasars". The Astrophysical Journal. 479 (2): 642–658. arXiv:astro-ph/9611163. Bibcode:1997ApJ...479..642B. doi:10.1086/303926. S2CID 15318893.
Shu, Yiping; Koposov, Sergey E; Evans, N Wyn; Belokurov, Vasily; McMahon, Richard G; Auger, Matthew W; Lemon, Cameron A (2019-09-05). "Catalogues of active galactic nuclei from Gaia and unWISE data". Monthly Notices of the Royal Astronomical Society. 489 (4). Oxford University Press (OUP): 4741–4759. arXiv:1909.02010. doi:10.1093/mnras/stz2487. ISSN 0035-8711.
Storey-Fisher, Kate; Hogg, David W.; Rix, Hans-Walter; Eilers, Anna-Christina; Fabbian, Giulio; Blanton, Michael; Alonso, David (2024). "Quaia, the Gaia-unWISE Quasar Catalog: An All-Sky Spectroscopic Quasar Sample". AAS Journals. 964 (1): 69. arXiv:2306.17749. Bibcode:2024ApJ...964...69S. doi:10.3847/1538-4357/ad1328.
Whalen, Daniel J.; Latif, Muhammad A.; Mezcua, Mar (2023-10-01). "Radio Emission From a z = 10.1 Black Hole in UHZ1". The Astrophysical Journal. 956 (2): 133. arXiv:2308.03837. Bibcode:2023ApJ...956..133W. doi:10.3847/1538-4357/acf92c. ISSN 0004-637X.
Shields, Gregory A. (1999). "A Brief History of Active Galactic Nuclei". The Publications of the Astronomical Society of the Pacific. 111 (760): 661–678. arXiv:astro-ph/9903401. Bibcode:1999PASP..111..661S. doi:10.1086/316378. S2CID 18953602. Retrieved 3 October 2014.
Shields, G. A. (1999). "A Brief History of Active Galactic Nuclei". Publications of the Astronomical Society of the Pacific. 111 (760): 661. arXiv:astro-ph/9903401. Bibcode:1999PASP..111..661S. doi:10.1086/316378. S2CID 18953602.
de Swart, J. G.; Bertone, G.; van Dongen, J. (2017). "How dark matter came to matter". Nature Astronomy. 1 (59): 0059. arXiv:1703.00013. Bibcode:2017NatAs...1E..59D. doi:10.1038/s41550-017-0059. S2CID 119092226.
Secrest, Nathan; et al. (25 February 2021). "A Test of the Cosmological Principle with Quasars". The Astrophysical Journal Letters. 908 (2): L51. arXiv:2009.14826. Bibcode:2021ApJ...908L..51S. doi:10.3847/2041-8213/abdd40.
Di Matteo, Tiziana; et al. (10 February 2005). "Energy input from quasars regulates the growth and activity of black holes and their host galaxies". Nature. 433 (7026): 604–607. arXiv:astro-ph/0502199. Bibcode:2005Natur.433..604D. doi:10.1038/nature03335. PMID 15703739. S2CID 3007350.
Pierce, J C S; et al. (13 February 2023). "Galaxy interactions are the dominant trigger for local type 2 quasars". Monthly Notices of the Royal Astronomical Society. 522 (2): 1736–1751. arXiv:2303.15506. doi:10.1093/mnras/stad455. ISSN 0035-8711.
Bañados, Eduardo; et al. (2018). "An 800-million-solar-mass black hole in a significantly neutral Universe at a redshift of 7.5". Nature. 553 (7689): 473–476. arXiv:1712.01860. Bibcode:2018Natur.553..473B. doi:10.1038/nature25180. ISSN 0028-0836. PMID 29211709. S2CID 205263326.
Anglés-Alcázar, Daniel; et al. (August 2021). "Cosmological Simulations of Quasar Fueling to Subparsec Scales Using Lagrangian Hyper-refinement". The Astrophysical Journal. 917 (2): 53. arXiv:2008.12303. Bibcode:2021ApJ...917...53A. doi:10.3847/1538-4357/ac09e8. ISSN 0004-637X. S2CID 221370537.
Gnedin, Nickolay Y.; Ostriker, Jeremiah P. (1997). "Reionization of the Universe and the Early Production of Metals". The Astrophysical Journal. 486 (2): 581–598. arXiv:astro-ph/9612127. Bibcode:1997ApJ...486..581G. doi:10.1086/304548. ISSN 0004-637X. S2CID 5758398.
Lu, Limin; et al. (1998). "The Metal Contents of Very Low Column Density Lyman-alpha Clouds: Implications for the Origin of Heavy Elements in the Intergalactic Medium". arXiv:astro-ph/9802189.
Bouwens, R. J.; et al. (2012). "Lower-luminosity Galaxies Could Reionize the Universe: Very Steep Faint-end Slopes to the UV Luminosity Functions at z ⩾ 5–8 from the HUDF09 WFC3/IR Observations". The Astrophysical Journal. 752 (1): L5. arXiv:1105.2038. Bibcode:2012ApJ...752L...5B. doi:10.1088/2041-8205/752/1/L5. ISSN 2041-8205. S2CID 118856513.
Madau, Piero; et al. (April 1999). "Radiative Transfer in a Clumpy Universe. III. The Nature of Cosmological Ionizing Sources". The Astrophysical Journal. 514 (2): 648–659. arXiv:astro-ph/9809058. Bibcode:1999ApJ...514..648M. doi:10.1086/306975. ISSN 0004-637X. S2CID 17932350.
Fan, Xiaohui; et al. (December 2001). "A Survey of z > 5.8 Quasars in the Sloan Digital Sky Survey. I. Discovery of Three New Quasars and the Spatial Density of Luminous Quasars at z ~ 6". The Astronomical Journal. 122 (6): 2833–2849. arXiv:astro-ph/0108063. Bibcode:2001AJ....122.2833F. doi:10.1086/324111. S2CID 119339804.
Zakamska, Nadia; et al. (2003). "Candidate Type II Quasars from the Sloan Digital Sky Survey. I. Selection and Optical Properties of a Sample at 0.3 < Z < 0.83". The Astronomical Journal. 126 (5): 2125. arXiv:astro-ph/0309551. Bibcode:2003AJ....126.2125Z. doi:10.1086/378610. S2CID 13477694.
Glikman, Eilat; et al. (2007). "The FIRST-2MASS Red Quasar Survey". The Astrophysical Journal. 667 (2): 673. arXiv:0706.3222. Bibcode:2007ApJ...667..673G. doi:10.1086/521073. S2CID 16578760.
Diamond-Stanic, Aleksandar; et al. (2009). "High-redshift SDSS Quasars with Weak Emission Lines". The Astrophysical Journal. 699 (1): 782–799. arXiv:0904.2181. Bibcode:2009ApJ...699..782D. doi:10.1088/0004-637X/699/1/782. S2CID 6735531.
Treu, Tommaso; Marshall, Philip J. (December 2016). "Time delay cosmography". The Astronomy and Astrophysics Review. 24 (1) 11. arXiv:1605.05333. Bibcode:2016A&ARv..24...11T. doi:10.1007/s00159-016-0096-8. eISSN 1432-0754. ISSN 0935-4956. 11.
Collaboration, TDCOSMO; et al. (2025). "TDCOSMO 2025: Cosmological constraints from strong lensing time delays". Astronomy & Astrophysics. 704: A63. arXiv:2506.03023. Bibcode:2025A&A...704A..63T. doi:10.1051/0004-6361/202555801.
Chen, Yu-Ching; Liu, Xin; Foord, Adi; Shen, Yue; Oguri, Masamune; Chen, Nianyi; Di Matteo, Tiziana; Holgado, Miguel; Hwang, Hsiang-Chih; Zakamska, Nadia (2023). "A close quasar pair in a disk–disk galaxy merger at z = 2.17". Nature. 616 (7955): 45–49. arXiv:2209.11249. Bibcode:2023Natur.616...45C. doi:10.1038/s41586-023-05766-6. PMID 37020007.
Myers, Adam D.; et al. (2008). "Quasar Clustering at 25 h⁻¹ kpc from a Complete Sample of Binaries". The Astrophysical Journal. 678 (2): 635–646. arXiv:0709.3474. Bibcode:2008ApJ...678..635M. doi:10.1086/533491. ISSN 0004-637X. S2CID 15747141.
Shen, Yue; Chen, Yu-Ching; Hwang, Hsiang-Chih; Liu, Xin; Zakamska, Nadia; Oguri, Masamune; Li, Jennifer I-Hsiu; Lazio, Joseph; Breiding, Peter (2021). "A hidden population of high-redshift double quasars unveiled by astrometry". Nature Astronomy. 5 (6): 569–574. arXiv:2105.03298. Bibcode:2021NatAs...5..569S. doi:10.1038/s41550-021-01323-1.
Mannucci, F.; Pancino, E.; Belfiore, F.; Cicone, C.; Ciurlo, A.; Cresci, G.; Lusso, E.; Marasco, A.; Marconi, A.; Nardini, E.; Pinna, E.; Severgnini, P.; Saracco, P.; Tozzi, G.; Yeh, S. (2022). "Unveiling the population of dual and lensed active galactic nuclei at sub-arcsec separations". Nature Astronomy. 6 (10): 1185–1192. arXiv:2203.11234. Bibcode:2022NatAs...6.1185M. doi:10.1038/s41550-022-01761-5.
Djorgovski, S. G.; et al. (2007). "Discovery of a Probable Physical Triple Quasar". The Astrophysical Journal. 662 (1): L1–L5. arXiv:astro-ph/0701155. Bibcode:2007ApJ...662L...1D. doi:10.1086/519162. ISSN 0004-637X. S2CID 22705420.
Farina, E. P.; et al. (2013). "Caught in the act: discovery of a physical quasar triplet". Monthly Notices of the Royal Astronomical Society. 431 (2): 1019–1025. arXiv:1302.0849. Bibcode:2013MNRAS.431.1019F. doi:10.1093/mnras/stt209. ISSN 1365-2966. S2CID 54606964.
Hennawi, Joseph F.; et al. (2015). "Quasar quartet embedded in giant nebula reveals rare massive structure in distant universe". Science. 348 (6236): 779–783. arXiv:1505.03786. Bibcode:2015Sci...348..779H. doi:10.1126/science.aaa5397. ISSN 0036-8075. PMID 25977547. S2CID 35281881.

bbc.co.uk (Global: 11^th place; English: 10^th place)

news.bbc.co.uk

Rincon, Paul (2007-01-09). "Astronomers see first quasar trio". BBC News.

books.google.com (Global: 3^rd place; English: 3^rd place)

Wallace, Philip Russell (1991). Physics: Imagination and Reality. World Scientific. ISBN 9789971509293.
Haven, Kendall F. (2001). That's weird!: awesome science mysteries. Illustrated by Jason Lynch. Golden, Colo.: Fulcrum Resources. pp. 39–41. ISBN 9781555919993.
Santilli, Ruggero Maria (2006). Isodual theory of antimatter: with applications to antigravity, grand unification and cosmology. Dordrecht: Springer. p. 304. Bibcode:2006itaa.book.....S. ISBN 978-1-4020-4517-2.
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caltech.edu (Global: 240^th place; English: 473^rd place)

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sheffield.ac.uk (Global: low place; English: 8,097^th place)

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Hennawi, Joseph F.; et al. (2015). "Quasar quartet embedded in giant nebula reveals rare massive structure in distant universe". Science. 348 (6236): 779–783. arXiv:1505.03786. Bibcode:2015Sci...348..779H. doi:10.1126/science.aaa5397. ISSN 0036-8075. PMID 25977547. S2CID 35281881.

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