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List of quasars

Topic: Astronomy

 From HandWiki - Reading time: 22 min

Short description: List of galactic nuclei

This article contains lists of quasars. More than a million quasars have been observed,[1] so any list on Wikipedia is necessarily a selection of them.

Proper naming of quasars are by Catalogue Entry, Qxxxx±yy using B1950 coordinates, or QSO Jxxxx±yyyy using J2000 coordinates. They may also use the prefix QSR. There are currently no quasars that are visible to the naked eye.

List of quasars

This is a list of exceptional quasars for characteristics otherwise not separately listed

Quasar Notes
Twin Quasar Associated with a possible planet microlensing event in the gravitational lens galaxy that is doubling the Twin Quasar's image.
QSR J1819+3845 Proved interstellar scintillation due to the interstellar medium.
CTA-102 In 1965, Soviet astronomer Nikolai S. Kardashev declared that this quasar was sending coded messages from an alien civilization.[2]
CID-42 Its supermassive black hole is being ejected and will one day become a displaced quasar.
TON 618 TON 618 is a very distant and extremely luminous quasar—technically, a hyperluminous, broad-absorption line, radio-loud quasar—located near the North Galactic Pole in the constellation Canes Venatici.
This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries.

List of named quasars

This is a list of quasars, with a common name, instead of a designation from a survey, catalogue or list.

Quasar Origin of name Notes
Twin Quasar From the fact that two images of the same gravitationally lensed quasar is produced.
Einstein Cross From the fact that gravitational lensing of the quasar forms a near perfect Einstein cross, a concept in gravitational lensing.
Triple Quasar From the fact that there are three bright images of the same gravitationally lensed quasar. There are actually four images; the fourth is faint.
Cloverleaf From its appearance having similarity to the leaf of a clover. It has been gravitationally lensed into four images, of roughly similar appearance.
Teacup Galaxy The name comes from the shape of the extended emission, which is shaped like the handle of a teacup. The handle is a bubble shaped by quasar winds or small-scale radio jets. Low redshift, highly obscured type 2 quasar.
This list is incomplete; you can help by expanding it.

List of multiply imaged quasars

This is a list of quasars that as a result of gravitational lensing appear as multiple images on Earth.

Quasar Images Lens Notes
Twin Quasar 2 YGKOW G1 First gravitationally lensed object discovered
Triple Quasar (PG 1115+080) 4 Originally discovered as 3 lensed images, the fourth image is faint. It was the second gravitationally lensed quasar discovered.
Einstein Cross 4 Huchra's Lens First Einstein Cross discovered
RX J1131-1231's quasar 4 RX J1131-1231's elliptical galaxy RX J1131-1231 is the name of the complex, quasar, host galaxy and lensing galaxy, together. The quasar's host galaxy is also lensed into a Chwolson ring about the lensing galaxy. The four images of the quasar are embedded in the ring image.
Cloverleaf 4[3] Brightest known high-redshift source of CO emission[4]
QSO B1359+154 6 CLASS B1359+154 and three more galaxies First sextuply-imaged galaxy
SDSS J1004+4112 5 Galaxy cluster at z = 0.68 First quasar discovered to be multiply image-lensed by a galaxy cluster and currently the third largest quasar lens with the separation between images of 15″[5][6][7]
SDSS J1029+2623 3 Galaxy cluster at z = 0.6 The current largest-separation quasar lens with 22.6″ separation between furthest images[8][9][10]
SDSS J2222+2745 6[11] Galaxy cluster at z = 0.49[12] First sextuply-lensed galaxy[11] Third quasar discovered to be lensed by a galaxy cluster.[12] Quasar located at z = 2.82[12]
This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries.

List of visual quasar associations

This is a list of double quasars, triple quasars, and the like, where quasars are close together in line-of-sight, but not physically related.

Quasars Count Notes
QSO 1548+115
4C 11.50 (z = 0.436)
QSO B1548+115B (z = 1.901)
 2 [13][14]
QSO 1146+111 8 [15]
z represents redshift, a measure of recessional velocity and inferred distance due to cosmological expansion
This list is incomplete; you can help by expanding it.

List of physical quasar groups

This is a list of binary quasars, trinary quasars, and the like, where quasars are physically close to each other.

Quasars Count Notes
quasars of SDSS J0841+3921 protocluster 4 First quasar quartet discovered.[16][17]
LBQS 1429-008 (QQQ 1432-0106) 3 First quasar triplet discovered.
It was first discovered as a binary quasar, before the third quasar was found.[18]
QQ2345+007 (Q2345+007)
Q2345+007A
Q2345+007B
 2 Originally thought to be a doubly imaged quasar, but actually a quasar couplet.[19]
QQQ J1519+0627 3 [20]
This list is incomplete; you can help by expanding it.

Large Quasar Groups

Large quasar groups (LQGs) are bound to a filament of mass, and not directly bound to each other.

LQG Count Notes
Webster LQG
(LQG 1) 		5 First LQG discovered. At the time of its discovery, it was the largest structure known.[21][22]
Huge-LQG
(U1.27) 		73 The largest structure known in the observable universe, as of 2013.[23][24]

List of quasars with apparent superluminal jet motion

This is a list of quasars with jets that appear to be superluminal due to relativistic effects and line-of-sight orientation. Such quasars are sometimes referred to as superluminal quasars.

Quasar Superluminality Notes
3C 279 4c First quasar discovered with superluminal jets[25][26][27][28][29]
3C 179 7.6c Fifth discovered, first with double lobes[30]
3C 273 This is also the first quasar ever identified[31]
3C 216
3C 345 [31][32]
3C 380
4C 69.21
(Q1642+690, QSO B1642+690)
8C 1928+738
(Q1928+738, QSO J1927+73, Quasar J192748.6+735802)
PKS 0637-752
QSO B1642+690
This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries.

Quasars that have a recessional velocity greater than the speed of light (c) are very common. Any quasar with z > 1 is receding faster than c, while z exactly equal to 1 indicates recession at the speed of light.[33] Early attempts to explain superluminal quasars resulted in convoluted explanations with a limit of z = 2.326, or in the extreme z < 2.4.[34] The majority of quasars lie between z = 2 and z = 5.

Firsts

Title Quasar Year Data Notes
First quasar discovered 3C 48 1960 first radio source for which optical identification was found, that was a star-like looking object
First "star" discovered later found to be a quasar
First radio source discovered later found to be a quasar
First quasar identified 3C 273 1962 first radio-"star" found to be at a high redshift with a non-stellar spectrum.
First radio-quiet quasar QSO B1246+377 (BSO 1) 1965 The first radio-quiet quasi-stellar objects (QSO) were called Blue Stellar Objects or BSO, because they appeared like stars and were blue in color. They also had spectra and redshifts like radio-loud quasi-stellar radio-sources (QSR), so became quasars.[27][35][36]
First host galaxy of a quasar discovered 3C 48 1982
First quasar found to seemingly not have a host galaxy HE0450-2958 (Naked Quasar) 2005 Some disputed observations suggest a host galaxy, others do not.
First multi-core quasar PG 1302-102 2014 Binary supermassive black holes within the quasar [37][38]
First quasar containing a recoiling supermassive black hole SDSS J0927+2943 2008 Two optical emission line systems separated by 2650 km/s
First gravitationally lensed quasar identified Twin Quasar 1979 Lensed into 2 images The lens is a galaxy known as YGKOW G1
First quasar found with a jet with apparent superluminal motion 3C 279 1971 [25][26][27]
First quasar found with the classic double radio-lobe structure 3C 47 1964
First quasar found to be an X-ray source 3C 273 1967 [39]
First "dustless" quasar found QSO J0303-0019 and QSO J0005-0006 2010 [40][41][42][43][44][45][46]
First Large Quasar Group discovered Webster LQG
(LQG 1) 		1982 [21][22]

Extremes

Title Quasar Data Notes
Brightest 3C 273 Apparent magnitude of ~12.9 Absolute magnitude: −26.7
Seemingly optically brightest APM 08279+5255 Seeming absolute magnitude of −32.2 This quasar is gravitationally lensed; its actual absolute magnitude is estimated to be −30.5
Most luminous SMSS J215728.21-360215.1 Absolute magnitude of −32.36 Highest absolute magnitude discovered thus far.
Most powerful quasar radio source 3C 273 Also the most powerful radio source in the sky
Most powerful SMSS J215728.21-360215.1
Most variable quasar radio source QSO J1819+3845 (Q1817+387) Also the most variable extrasolar radio source
Least variable quasar radio source
Most variable quasar optical source
Least variable quasar optical source
Most distant UHZ1 z = 10.1 Most distant quasar known as of 2023[47]
Most distant radio-quiet quasar
Most distant radio-loud quasar QSO J1427+3312 z = 6.12 Found June 2008[48][49]
Most distant blazar quasar PSO J0309+27 z > 6
Least distant Markarian 231 600 Mly [50] inactive: IC 2497
Largest Large Quasar Group Huge-LQG
(U1.27) 		73 quasars [23][24]

First quasars found

First 10 Quasars Identified
Rank Quasar Date of discovery Notes
1 3C 273 1963 [51]
2 3C 48 1963 [51]
3 3C 47 1964 [51]
3 3C 147 1964 [51]
5 CTA 102 1965 [52]
5 3C 287 1965 [52]
5 3C 254 1965 [52]
5 3C 245 1965 [52]
5 3C 9 1965 [52]

These are the first quasars which were found and had their redshifts determined.

Most distant quasars

Artist's conception of the oldest known quasar as of 2021, QSO J0313–1806 existing only ~670 million years after the Big Bang despite its large size.

In 1964 a quasar became the most distant object in the universe for the first time. Quasars would remain the most distant objects in the universe until 1997, when a pair of non-quasar galaxies would take the title (galaxies CL 1358+62 G1 & CL 1358+62 G2 lensed by galaxy cluster CL 1358+62).[53]

In cosmic scales distance is usually indicated by redshift (denoted by z) which is a measure of recessional velocity and inferred distance due to cosmological expansion.

Quasars with z > 6[54]
Quasar Distance Notes
QSO J0313–1806 z = 7.64 Currently the most distant known quasar.[55]
ULAS J1342+0928 z = 7.54 Former most distant quasar.
J1007+2115 (Pōniuāʻena) z = 7.52
ULAS J1120+0641
(ULAS J112001.48+064124.3) 		z = 7.085 Former most distant quasar. First quasar with z > 7.[56]
CHFQS J2348-3054
(CHFQS J234833.34-305410.0) 		z = 6.90
PSO J172.3556+18.7734 z = 6.82 Currently the most distant radio-loud known quasar
CFHQS J2329-0301
(CFHQS J232908-030158) 		z = 6.43 Former most distant quasar.[57][58][59][60]
SDSS J114816.64+525150.3
(SDSS J1148+5251) 		z = 6.419 Former most distant quasar.[61][62][63][60][64][65]
SDSS J1030+0524
(SDSSp J103027.10+052455.0) 		z = 6.28 Former most distant quasar. First quasar with z > 6.[66][64][67][68][69][70][71]
SDSS J104845.05+463718.3
(QSO J1048+4637) 		z = 6.23 [65]
SDSS J162331.81+311200.5
(QSO J1623+3112) 		z = 6.22 [65]
CFHQS J0033-0125
(CFHQS J003311-012524) 		z = 6.13 [58]
SDSS J125051.93+313021.9
(QSO J1250+3130) 		z = 6.13 [65]
CFHQS J1509-1749
(CFHQS J150941-174926) 		z = 6.12 [58]
QSO B1425+3326 / QSO J1427+3312 z = 6.12 Most distant radio-quasar.[48][72]
SDSS J160253.98+422824.9
(QSO J1602+4228) 		z = 6.07 [65]
SDSS J163033.90+401209.6
(QSO J1630+4012) 		z = 6.05 [65]
CFHQS J1641+3755
(CFHQS J164121+375520) 		z = 6.04 [58]
SDSS J113717.73+354956.9
(QSO J1137+3549) 		z = 6.01 [65]
SDSS J081827.40+172251.8
(QSO J0818+1722) 		z = 6.00 [65]
SDSSp J130608.26+035626.3
(QSO J1306+0356) 		z = 5.99 [69][70][71]
Most Distant Quasar by Type
Type Quasar Date Distance Notes
Most distant QSO J0313–1806 2021 z = 7.64 [55]
Most distant radio loud quasar QSO B1425+3326 / QSO J1427+3312 2008 z = 6.12
Most distant radio quiet quasar
Most distant OVV quasar
Most Distant Quasar Titleholders
Quasar Date Distance Notes
QSO J0313–1806 2021–present z = 7.64 Current record holder.[55]
ULAS J1342+0928 2017–2021 z = 7.54 [73]
ULAS J1120+0641 2011–2017 z = 7.085 Not the most distant object when discovered. First quasar with z > 7.[56]
CFHQS J2329-0301
(CFHQS J232908-030158) 		2007–2011 z = 6.43 Not the most distant object when discovered. It did not exceed IOK-1 (z = 6.96), which was discovered in 2006.[57][58][59][60][74][75][76]
SDSS J114816.64+525150.3
(SDSS J1148+5251) 		2003–2007 z = 6.419 Not the most distant object when discovered. It did not exceed HCM 6A galaxy lensed by Abell 370 at z = 6.56, discovered in 2002. Also discovered around the time of discovery was a new most distant galaxy, SDF J132418.3+271455 at z = 6.58.[61][62][63][60][74][77][78][79][80][81]
SDSS J1030+0524
(SDSSp J103027.10+052455.0) 		2001–2003 z = 6.28 Most distant object when discovered. First object with z > 6.[66][64][67][68][70][71]
SDSS 1044-0125
(SDSSp J104433.04-012502.2) 		2000–2001 z = 5.82 Most distant object when discovered. It exceeded galaxy SSA22-HCM1 (z = 5.74; discovered in 1999) as the most distant object.[82][83][70][71][74][84][85]
RD300
(RD J030117+002025) 		2000 z = 5.50 Not the most distant object when discovered. It did not surpass galaxy SSA22-HCM1 (z = 5.74; discovered in 1999).[86][87][83][88][74]
SDSSp J120441.73−002149.6
(SDSS J1204-0021) 		2000 z = 5.03 Not the most distant object when discovered. It did not surpass galaxy SSA22-HCM1 (z = 5.74; discovered in 1999).[88][74]
SDSSp J033829.31+002156.3
(QSO J0338+0021) 		1998–2000 z = 5.00 First quasar discovered with z > 5. Not the most distant object when discovered. It did not surpass galaxy BR1202-0725 LAE (z = 5.64; discovered earlier in 1998).[74][82][89][90][91][92][93]
PC 1247+3406 1991–1998 z = 4.897 Most distant object when discovered.[82][94][95][96][97]
PC 1158+4635 1989–1991 z = 4.73 Most distant object when discovered.[82][97][98][99][100][101]
Q0051-279 1987–1989 z = 4.43 Most distant object when discovered.[102][98][101][103][104][105]
Q0000-26
(QSO B0000-26) 		1987 z = 4.11 Most distant object when discovered.[102][98][106]
PC 0910+5625
(QSO B0910+5625) 		1987 z = 4.04 Most distant object when discovered; second quasar with z > 4.[82][98][107][108]
Q0046–293
(QSO J0048-2903) 		1987 z = 4.01 Most distant object when discovered; first quasar with z > 4.[102][98][107][109][110]
Q1208+1011
(QSO B1208+1011) 		1986–1987 z = 3.80 Most distant object when discovered and a gravitationally-lensed double-image quasar. From the time of discovery to 1991, had the least angular separation between images, 0.45″.[107][111][112]
PKS 2000-330
(QSO J2003-3251, Q2000-330) 		1982–1986 z = 3.78 Most distant object when discovered.[33][107][113][114]
OQ172
(QSO B1442+101) 		1974–1982 z = 3.53 Most distant object when discovered.[115][116][117]
OH471
(QSO B0642+449) 		1973–1974 z = 3.408 Most distant object when discovered; first quasar with z > 3. Nicknamed "the blaze marking the edge of the universe".[115][117][118][119][120]
4C 05.34 1970–1973 z = 2.877 Most distant object when discovered. The redshift was so much greater than the previous record that it was believed to be erroneous, or spurious.[33][34][117][121][122]
5C 02.56
(7C 105517.75+495540.95) 		1968–1970 z = 2.399 Most distant object when discovered.[122][123][53]
4C 25.05
(4C 25.5) 		1968 z = 2.358 Most distant object when discovered.[122][53][124]
PKS 0237-23
(QSO B0237-2321) 		1967–1968 z = 2.225 Most distant object when discovered.[33][124][125][126][127]
4C 12.39
(Q1116+12, PKS 1116+12) 		1966–1967 z = 2.1291 Most distant object when discovered.[53][127][128][129]
4C 01.02
(Q0106+01, PKS 0106+1) 		1965–1966 z = 2.0990 Most distant object when discovered.[53][127][128][130]
3C 9 1965 z = 2.018 Most distant object when discovered; first quasar with z > 2.[2][35][127][131][132][133]
3C 147 1964–1965 z = 0.545 First quasar to become the most distant object in the universe, beating radio galaxy 3C 295.[134][135][136][137]
3C 48 1963–1964 z = 0.367 Second quasar redshift measured. Redshift was discovered after publication of 3C273's results prompted researchers to re-examine spectroscopic data. Not the most distant object when discovered. The radio galaxy 3C 295 was found in 1960 with z = 0.461.[27][33][138][139][140][51][134]
3C 273 1963 z = 0.158 First quasar redshift measured. Not the most distant object when discovered. The radio galaxy 3C 295 was found in 1960 with z = 0.461.[27][51][139][140][141]

Most powerful quasars

10 Most luminous Quasars
Rank Quasar Data Notes
1 SMSS J215728.21-360215.1 It has an intrinsic bolometric luminosity of ~ 6.9 × 1014 Suns or ~ 2.6 × 1041 watts [142]
2 HS 1946+7658 It has an intrinsic bolometric luminosity in excess of 1014 Suns or 1041 watts [143][144]
3 SDSS J155152.46+191104.0 Has over 1041 watts luminosity [145][146]
4 HS 1700+6416 Has a luminosity of over 1041 watts [147]
5 SDSS J010013.02+280225.8 Has a luminosity of around 1.62 × 1041 watts [148]
6 SBS 1425+606 Has a luminosity of over 1041 watts – optically brightest for z>3 [149]
J1144-4308 Has a luminosity of 4.7 x 1040 watts or M_i(z=2) = -29.74 mag, optically brightest in last 9 Gyr [150]
SDSS J074521.78+473436.2 [151][152]
S5 0014+813
SDSS J160455.39+381201.6 z = 2.51, M(i) = 15.84
SDSS J085543.40-001517.7 [153]

See also

References

  1. ↑ Subir Sarkar (Jan 20, 2021). "Re-examining cosmic acceleration". Sommerfeld Theory Colloquium, Ludwig Maximilian University of Munich. p. 41. https://www.physik.uni-muenchen.de/aus_der_fakultaet/kolloquien/asc_kolloquium/archiv_wise20/sarkar/sarkar_reexamcosmicaccn.pdf. 
  2. ↑ 2.0 2.1 "Toward the Edge of the Universe". Time Magazine. May 21, 1965. http://www.time.com/time/magazine/article/0,9171,901720,00.html. 
  3. ↑ Magain, P.; Surdej, J.; Swings, J.-P.; Borgeest, U.; Kayser, R. (1988). "Discovery of a quadruply lensed quasar - The 'clover leaf' H1413 + 117". Nature 334 (6180): 325–327. doi:10.1038/334325a0. Bibcode: 1988Natur.334..325M. 
  4. ↑ Venturini, S.; Solomon, P. M. (2003). "The Molecular Disk in the Cloverleaf Quasar". The Astrophysical Journal 590 (2): 740–745. doi:10.1086/375050. Bibcode: 2003ApJ...590..740V. 
  5. ↑ Inada, N. (2003). "A Gravitationally lensed quasar with quadruple images separated by 14.62 arcseconds". Nature 426 (6968): 810–812. doi:10.1038/nature02153. PMID 14685230. Bibcode: 2003Natur.426..810I. 
  6. ↑ Oguri, M. (2004). "Observations and Theoretical Implications of the Large-Separation Lensed Quasar SDSS J1004+4112". The Astrophysical Journal 605 (1): 78–97. doi:10.1086/382221. Bibcode: 2004ApJ...605...78O. 
  7. ↑ Inada, N. (2005). "Discovery of a Fifth Image of the Large Separation Gravitationally Lensed Quasar SDSS J1004+4112". Publications of the Astronomical Society of Japan 57 (3): L7–L10. doi:10.1093/pasj/57.3.L7. Bibcode: 2005PASJ...57L...7I. 
  8. ↑ Inada, Naohisa (2006). "SDSS J1029+2623: A Gravitationally Lensed Quasar with an Image Separation of 22."5". The Astrophysical Journal 653 (2): L97–L100. doi:10.1086/510671. Bibcode: 2006ApJ...653L..97I. 
  9. ↑ Oguri, Masamune (2008). "The Third Image of the Large-Separation Lensed Quasar SDSS J1029+2623". The Astrophysical Journal 676 (1): L1–L4. doi:10.1086/586897. Bibcode: 2008ApJ...676L...1O. 
  10. ↑ Kratzer, Rachael M (2011). "Analyzing the Flux Anomalies of the Large-Separation Lensed Quasar SDSS J1029+2623". The Astrophysical Journal 728 (1): L18. doi:10.1088/2041-8205/728/1/L18. Bibcode: 2011ApJ...728L..18K. 
  11. ↑ 11.0 11.1 ScienceDaily, "Quasar Observed in Six Separate Light Reflections", 7 August 2013
  12. ↑ 12.0 12.1 12.2 Dahle, H. (2013). "SDSS J2222+2745: A Gravitationally Lensed Sextuple Quasar with a Maximum Image Separation of 15.1″ Discovered in the Sloan Giant Arcs Survey". The Astrophysical Journal 773 (2): 146. doi:10.1088/0004-637X/773/2/146. Bibcode: 2013ApJ...773..146D. 
  13. ↑ SIMBAD, Object query : QSO 1548+115
  14. ↑ Burke, Bernard F. (1986). "Gravitational lenses - Observations". Quasars, Proceedings of the IAU Symposium, Bangalore, India, 2–6 December 1985. 119. D. Reidel Publishing Co.. 517. Bibcode: 1986IAUS..119..517B. 
  15. ↑ SIMBAD, Object query : QSO 1146+111
  16. ↑ Space Daily, "Astronomers Baffled by Discovery of Rare Quasar Quartet", 18 May 2015
  17. ↑ Hennawi, Joseph F.; Prochaska, J. Xavier; Cantalupo, Sebastiano; Arrigoni-Battaia, Fabrizio (15 May 2015). "Quasar Quartet Embedded in Giant Nebula Reveals Rare Massive Structure in Distant Universe". Science 348 (6236): 779–783. doi:10.1126/science.aaa5397. PMID 25977547. Bibcode: 2015Sci...348..779H. 
  18. ↑ Robert Naeye (10 January 2007). "The First Triple Quasar". Sky & Telescope. http://www.skyandtelescope.com/news/5141272.html. 
  19. ↑ Alan MacRobert (7 July 2006). "Binary Quasar Is No Illusion". Sky & Telescope. http://www.skyandtelescope.com/news/3305801.html. 
  20. ↑ SpaceDaily, "Extremely rare triple quasar found", 14 March 2013 (accessed 14 March 2013)
  21. ↑ 21.0 21.1 Webster, A (1982). "The clustering of quasars from an objective-prism survey". Monthly Notices of the Royal Astronomical Society 199 (3): 683–705. doi:10.1093/mnras/199.3.683. Bibcode: 1982MNRAS.199..683W. 
  22. ↑ 22.0 22.1 Clowes, Roger (2001). "Large Quasar Groups - A Short Review". The new era of wide field astronomy : proceedings of a conference held at the Centre for Astrophysics, University of Central Lancashire, Preston, United Kingdom, 21-24 August 2000. 232. Astronomical Society of the Pacific. 108. ISBN 1-58381-065-X. Bibcode: 2001ASPC..232..108C. 
  23. ↑ 23.0 23.1 Clowes, Roger G.; Harris, Kathryn A.; Raghunathan, Srinivasan; Campusano, Luis E.; Soechting, Ilona K.; Graham, Matthew J. (2013). "A structure in the early universe at z ~ 1.3 that exceeds the homogeneity scale of the R-W concordance cosmology". Monthly Notices of the Royal Astronomical Society 429 (4): 2910–2916. doi:10.1093/mnras/sts497. Bibcode: 2013MNRAS.429.2910C. 
  24. ↑ 24.0 24.1 ScienceDaily, "Biggest Structure in Universe: Large Quasar Group Is 4 Billion Light Years Across", Royal Astronomical Society, 11 January 2013 (accessed 13 January 2013)
  25. ↑ 25.0 25.1 Unwin, Stephen C. (1987). "Superluminal motion in the quasar 3C279". Superluminal radio sources; Proceedings of the Workshop, Pasadena, Calif., 28–30 October 1986. Cambridge University Press. 34–39. Bibcode: 1987slrs.work...34U. 
  26. ↑ 26.0 26.1 Preuss, E. (2002). "The Beginnings of VLBI at the 100-m Radio Telescope". in E. Ros. 6th European VLBI Network Symposium on New Developments in VLBI Science and Technology, held in Bonn, 25–28 June 25 2002. Max-Planck-Institut für Radioastronomie. 1. Bibcode: 2002evn..conf....1P. 
  27. ↑ 27.0 27.1 27.2 27.3 27.4 Collin, Suzy (2006). "Quasars and Galactic Nuclei, a Half-Century Agitated Story". AIP Conference Proceedings 861: 587–595. doi:10.1063/1.2399629. Bibcode: 2006AIPC..861..587C. 
  28. ↑ New Scientist, Quasar jets and cosmic engines: Some galaxies spew out vast amounts of material into space at velocities close to that of light. Astronomers still don't know why, 16 March 1991
  29. ↑ The superluminal radio source in the gamma-ray blazar 3C 279
  30. ↑ Porcas, R. W (1981). "Superluminal quasar 3C179 with double radio lobes". Nature 294 (5836): 47–49. doi:10.1038/294047a0. Bibcode: 1981Natur.294...47P. 
  31. ↑ 31.0 31.1 Daily Intelligencer, The May 29, 1981;
  32. ↑ Walter Sullivan (27 December 1983). "If Nothing Is Faster than Light, What's Going On?". The New York Times: p. C1. https://www.nytimes.com/1983/12/27/science/if-nothing-is-faster-than-light-what-s-going-on.html?sec=health&pagewanted=1. 
  33. ↑ 33.0 33.1 33.2 33.3 33.4 The Structure of the Physical Universe, Volume III - The Universe of Motion, CHAPTER 23 - Quasar Redshifts , by Dewey Bernard Larson, Library of Congress Catalog Card No. 79-88078, ISBN 0-913138-11-8, Copyright 1959, 1971, 1984
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  35. ↑ 35.0 35.1 "The Quasi-Quasars". Time (magazine). 18 June 1965. http://www.time.com/time/magazine/article/0,9171,898892,00.html. 
  36. ↑ SIMBAD, Object query : BSO 1, QSO B1246+377 -- Quasar
  37. ↑ Xaq Rzetelny (8 January 2015). "Supermassive black hole binary discovered". https://arstechnica.com/science/2015/01/supermassive-black-hole-binary-discovered/. 
  38. ↑ Matthew J. Graham; S. George Djorgovski; Daniel Stern; Eilat Glikman; Andrew J. Drake; Ashish A. Mahabal; Ciro Donalek; Steve Larson et al. (25 July 2014). "A possible close supermassive black-hole binary in a quasar with optical periodicity". Nature 518 (7537): 74–76. 7 January 2015. doi:10.1038/nature14143. PMID 25561176. Bibcode: 2015Natur.518...74G. 
  39. ↑ "X Rays from a Quasar". Time (magazine). 14 July 1967. http://www.time.com/time/magazine/article/0,9171,899648,00.html. 
  40. ↑ Discovery News, "Primordial 'Dust Free' Monsters Lurk at the Edge of the Universe", Ian O'Neill, 18 March 2010 (accessed 6 April 2010)
  41. ↑ DNA India, "Astronomers discover most primitive supermassive black holes known", ANI, 19 March 2010 (accessed 6 April 2010)
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  43. ↑ Jiang, Linhua; Fan, Xiaohui; Brandt, W. N; Carilli, Chris L; Egami, Eiichi; Hines, Dean C; Kurk, Jaron D; Richards, Gordon T et al. (2010). "Dust-free quasars in the early Universe". Nature 464 (7287): 380–383. doi:10.1038/nature08877. PMID 20237563. Bibcode: 2010Natur.464..380J. 
  44. ↑ Scientific Computing, "Fast-growing Primitive Black Holes found in Distant Quasars " (accessed 4 April 2010)
  45. ↑ SIMBAD, "QSO J0303-0019" (accessed 4 April 2010)
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  48. ↑ 48.0 48.1 Radio astronomers detect 'baby quasar' near the edge of the visible Universe, 13:50 EST, 6 June 2008
  49. ↑ SIMBAD, Object query : QSO J1427+3312, QSO J1427+3312 -- Quasar
  50. ↑ "Double black hole is powering quasar, astronomers find". 31 August 2015. http://www.cnn.com/2015/08/31/us/double-black-hole-nasa-hubble-feat/. 
  51. ↑ 51.0 51.1 51.2 51.3 51.4 51.5 Interview; "Maaarten Schmidt". http://oralhistories.library.caltech.edu/118/01/Schmidt96_OHO.pdf.  (556 KB); 11 April and 2 & 15 May 1996
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  54. ↑ Schneider, Donald P. (August 2005). "The Sloan Digital Sky Survey Quasar Catalog. III. Third Data Release". The Astronomical Journal 130 (2): 367–380. doi:10.1086/431156. Bibcode: 2005AJ....130..367S. 
  55. ↑ 55.0 55.1 55.2 Maria Temming (January 18, 2021), "The most ancient supermassive black hole is bafflingly big", Science News, https://www.sciencenews.org/article/most-ancient-supermassive-black-hole-quasar-bafflingly-big 
  56. ↑ 56.0 56.1 Scientific American, "Brilliant, but Distant: Most Far-Flung Known Quasar Offers Glimpse into Early Universe", John Matson, 29 June 2011
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  59. ↑ 59.0 59.1 CFHQS UOttawa, Canada-France High-z Quasar Survey
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  74. ↑ 74.0 74.1 74.2 74.3 74.4 74.5 UW-Madison Astronomy, Confirmed High Redshift (z > 5.5) Galaxies - (Last Updated 10 February 2005)
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  79. ↑ BBC News, Most distant galaxy detected, 25 March 2003, 14:28 GMT
  80. ↑ Hu, E. M. (5 March 2002). "A Redshift z = 6.56 Galaxy behind the Cluster Abell 370". The Astrophysical Journal Letters 568 (2): L75–L79. doi:10.1086/340424. Bibcode: 2002ApJ...568L..75H. 
  81. ↑ Kodaira, K (2003). "The Discovery of Two Lyman α Emitters Beyond Redshift 6 in the Subaru Deep Field". Publications of the Astronomical Society of Japan 55 (2): L17–L21. doi:10.1093/pasj/55.2.L17. Bibcode: 2003PASJ...55L..17K. 
  82. ↑ 82.0 82.1 82.2 82.3 82.4 "International Team of Astronomers Finds Most Distant Object". Science Journal (Eberly College of Science, PennState) 17 (1). Summer 2000. http://www.science.psu.edu/journal/Sum2000/DistObj.htm. 
  83. ↑ 83.0 83.1 Hu, Esther M.; McMahon, Richard G.; Cowie, Lennox L. (3 August 1999). "An Extremely Luminous Galaxy at z = 5.74". The Astrophysical Journal Letters 522 (1): L9–L12. doi:10.1086/312205. Bibcode: 1999ApJ...522L...9H. 
  84. ↑ PennState Eberly College of Science, X-rays from the Most Distant Quasar Captured with the XMM-Newton Satellite , Dec 2000
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  93. ↑ John Noble Wilford (20 October 1988). "Peering Back in Time, Astronomers Glimpse Galaxies Aborning". The New York Times: p. F1. https://www.nytimes.com/1998/10/20/science/peering-back-in-time-astronomers-glimpse-galaxies-aborning.html?pagewanted=3. 
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  95. ↑ New Scientist, issue 1842, 10 October 1992, page 17, Science: Infant galaxy's light show
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  99. ↑ SIMBAD, Object query : PC 1158+4635, QSO B1158+4635 -- Quasar
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  103. ↑ Levshakov, S. A (1989). "Absorption spectra of quasars". Astrophysics 29 (2): 657–671. doi:10.1007/BF01005972. Bibcode: 1988Ap.....29..657L. 
  104. ↑ The New York Times, Objects Detected in Universe May Be the Most Distant Ever Sighted, 14 January 1988
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  106. ↑ SIMBAD, Object query : Q0000-26, QSO B0000-26 -- Quasar
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  141. ↑ The Origin of Matter Part 4
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