Astronomy:List of quasars

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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 is 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 posited that this quasar could be the source of signals 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 quasar are produced by gravitational lensing.
Einstein Cross From the fact that gravitational lensing of the quasar forms a near perfect Einstein cross, a concept in gravitational lensing.
Template:Nsl 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.
Pōniuāʻena The third most distant quasar known as of 2025, named for its early formation at most 100 million years after the Big Bang. Named as part of the A Hua He Inoa program by the ʻImiloa Astronomy Center.[3]
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[4] Brightest known high-redshift source of CO emission[5]
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″[6][7][8]
SDSS J1029+2623 3 Galaxy cluster at z = 0.6 The current largest-separation quasar lens with 22.6″ separation between furthest images[9][10][11]
SDSS J2222+2745 6[12] Galaxy cluster at z = 0.49[13] First sextuply-lensed galaxy[12] Third quasar discovered to be lensed by a galaxy cluster.[13] Quasar located at z = 2.82[13]
RX J0911.4+0551 4[14] Galaxy located at z = 0.76 Gravitationally lensed object discovered by the ROSAT All-Sky survey in 1997. Quasar located at z = 2.800.[15]
CLASS B1152+199 2 Galaxy located at z = 0.43[16]
HE 1104-1805 2 Galaxy located at z = 0.72[17] Also known as Double Hamburger.[18]
HE 2149-2745 2 Galaxy at z = 0.60[19] Gravitationally lensed broad absorption object (BAL) at z = 2.033[20]
FBQ 0951+2635 2 Galaxy located at z = 0.26[19]
HE0435-1223 4 Elliptical galaxy of HE0435-1223 at z = 0.45[21] Quasar located at z = 1.689. Components arranged in cross figuration.[22]
SBS 0909+532 2 Lens galaxy of SBS 0909+532 at z = 0.83[23] Originally interpreted as a binary quasar but later revealed as a gravitationally lensed object.[24][25]
UM 673 2 Lens galaxy at z = 0.49[19] Quasar located at at z = 2.71, first discovered by J. Surdej (1988)[26]
CTQ 327 2 Lens galaxy between z = 0.4 and z= 0.6[27]
CTQ 414 2 Discovered in 1999. Quasar located at z = 1.29.[28]
HE 0230-2130 5 Complex lensed system. Quasar located at z = 2.130.[29]
SDSS J1001+5027 2 Lens galaxy at z = 0.3[30]
SDSS J1206+4332 2 Lens galaxy at z = 0.74[30]
SDSS J0246-0825 2 Lens galaxy at z = 0.724[31] Discovered by Scott Burles (2005).[31]
SDSS J0904+1512 2[32] Discovered in the SDSS Quasar Lens Search (2010)[32]
SDSS J1054+2733 2[32] Discovered in the SDSS Quasar Lens Search (2010)[32]
SDSS J1620+1203 2[32] Lens galaxy at z = 0.39[32] Discovered in the SDSS Quasar Lens Search (2010). Quasar located at z = 1.158[32]
SDSS J0746+4403 2[33] Lens galaxy at z = 0.513[32] Discovered in 2007. Quasar located at z = 2.00[33]
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 [34][35]
QSO 1146+111 8 [36]
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.[37][38]
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.[39]
QQ2345+007 (Q2345+007)
Q2345+007A
Q2345+007B
 2 Originally thought to be a doubly imaged quasar, but actually a quasar couplet.[40]
QQQ J1519+0627 3 [41]
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.[42][43]
Huge-LQG
(U1.27) 		73 The largest structure known in the observable universe, as of 2013.[44][45]

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[46][47][48][49][50]
3C 179 7.6c Fifth discovered, first with double lobes[51]
3C 273 This is also the first quasar ever identified[52]
3C 216
3C 345 [52][53]
3C 380
4C 69.21
(Q1642+690, QSO B1642+690)
4C 39.25 [54]
4C 38.41 [55]
8C 1928+738
(Q1928+738, QSO J1927+73, Quasar J192748.6+735802)
PKS 0637-752
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.[56] Early attempts to explain superluminal quasars resulted in convoluted explanations with a limit of z = 2.326, or in the extreme z < 2.4.[57] 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.[48][58][59]
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 [60][61]
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 [46][47][48]
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 [62]
First "dustless" quasar found QSO J0303-0019 and QSO J0005-0006 2010 [63][64][65][66][67][68][69]
First Large Quasar Group discovered Webster LQG
(LQG 1) 		1982 [42][43]

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[70]
Most distant radio-quiet quasar
Most distant radio-loud quasar QSO J1427+3312 z = 6.12 Found June 2008[71][72]
Most distant blazar quasar PSO J0309+27 z > 6
Least distant Markarian 231 600 Mly [73] inactive: IC 2497
Largest Large Quasar Group Huge-LQG (U1.27) 73 quasars [44][45]
Fastest Growing Quasar SMSS J052915.80–435152.0
(QSO J0529-4351) 		~ 413 solar masses per year (using standard radiative efficiency);
~ 370 solar masses per year (using best-fit slim disc model) 		[74][75]

First quasars found

First 10 Quasars Identified
Rank Quasar Date of discovery Notes
1 3C 273 1963 [76]
2 3C 48 1963 [76]
3 3C 47 1964 [76]
3 3C 147 1964 [76]
5 CTA 102 1965 [77]
5 3C 287 1965 [77]
5 3C 254 1965 [77]
5 3C 245 1965 [77]
5 3C 9 1965 [77]

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).[78]

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[79]
Quasar Distance Notes
UHZ1 z = 10.1 Most distant quasar known as of 2023[70][80]
QSO J0313–1806 z = 7.64 Former most distant quasar.[81][80]
ULAS J1342+0928 z = 7.54 Former most distant quasar.[82][80]
Pōniuāʻena (Q J1007+2115) z = 7.52 [83][80]
ULAS J1120+0641
(ULAS J112001.48+064124.3) 		z = 7.085 Former most distant quasar. First quasar with z > 7.[84]
DELS J003836.10-152723.6 z = 7.02 [85]
HSC J235646.33+001747.3 z = 7.01 [86]
DES J025216.64-050331.8 z = 7.00 [87]
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
HSC J135012.04-002705.2 z = 6.49 [86]
CFHQS J2329-0301
(CFHQS J232908-030158) 		z = 6.43 Former most distant quasar.[88][89][90][91]
SDSS J114816.64+525150.3
(SDSS J1148+5251) 		z = 6.419 Former most distant quasar.[92][93][94][91][95][96]
SDSS J1030+0524
(SDSSp J103027.10+052455.0) 		z = 6.28 Former most distant quasar. First quasar with z > 6.[97][95][98][99][100][101][102]
SDSS J104845.05+463718.3
(QSO J1048+4637) 		z = 6.23 [96]
SDSS J162331.81+311200.5
(QSO J1623+3112) 		z = 6.22 [96]
CFHQS J0033-0125
(CFHQS J003311-012524) 		z = 6.13 [89]
SDSS J125051.93+313021.9
(QSO J1250+3130) 		z = 6.13 [96]
CFHQS J1509-1749
(CFHQS J150941-174926) 		z = 6.12 [89]
QSO B1425+3326 / QSO J1427+3312 z = 6.12 Most distant radio-quasar.[71][103]
SDSS J160253.98+422824.9
(QSO J1602+4228) 		z = 6.07 [96]
SDSS J163033.90+401209.6
(QSO J1630+4012) 		z = 6.05 [96]
CFHQS J1641+3755
(CFHQS J164121+375520) 		z = 6.04 [89]
SDSS J113717.73+354956.9
(QSO J1137+3549) 		z = 6.01 [96]
SDSS J081827.40+172251.8
(QSO J0818+1722) 		z = 6.00 [96]
SDSSp J130608.26+035626.3
(QSO J1306+0356) 		z = 5.99 [100][101][102]
Most Distant Quasar by Type
Type Quasar Date Distance Notes
Most distant UHZ1 2023 z = 10.2 [104]
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
UHZ1 2023– z = 10.2 Current distance record holder [104][70]
QSO J0313−1806 2021–2023 z = 7.64 [81][104]
ULAS J1342+0928 2017–2021 z = 7.54 [105]
ULAS J1120+0641 2011–2017 z = 7.085 Not the most distant object when discovered. First quasar with z > 7.[84]
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.[88][89][90][91][106][107][108]
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.[92][93][94][91][106][109][110][111][112][113]
SDSS J1030+0524
(SDSSp J103027.10+052455.0) 		2001–2003 z = 6.28 Most distant object when discovered. First object with z > 6.[97][95][98][99][101][102]
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.[114][115][101][102][106][116][117]
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).[118][119][115][120][106]
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).[120][106]
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).[106][114][121][122][123][124][125]
PC 1247+3406 1991–1998 z = 4.897 Most distant object when discovered.[114][126][127][128][129]
PC 1158+4635 1989–1991 z = 4.73 Most distant object when discovered.[114][129][130][131][132][133]
Q0051-279 1987–1989 z = 4.43 Most distant object when discovered.[134][130][133][135][136][137]
Q0000-26
(QSO B0000-26) 		1987 z = 4.11 Most distant object when discovered.[134][130][138]
PC 0910+5625
(QSO B0910+5625) 		1987 z = 4.04 Most distant object when discovered; second quasar with z > 4.[114][130][139][140]
Q0046–293
(QSO J0048-2903) 		1987 z = 4.01 Most distant object when discovered; first quasar with z > 4.[134][130][139][141][142]
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″.[139][143][144]
PKS 2000-330
(QSO J2003-3251, Q2000-330) 		1982–1986 z = 3.78 Most distant object when discovered.[56][139][145][146]
OQ172
(QSO B1442+101) 		1974–1982 z = 3.53 Most distant object when discovered.[147][148][149]
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".[147][149][150][151][152]
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.[56][57][149][153][154]
5C 02.56
(7C 105517.75+495540.95) 		1968–1970 z = 2.399 Most distant object when discovered.[154][155][78]
4C 25.05
(4C 25.5) 		1968 z = 2.358 Most distant object when discovered.[154][78][156]
PKS 0237-23
(QSO B0237-2321) 		1967–1968 z = 2.225 Most distant object when discovered.[56][156][157][158][159]
4C 12.39
(Q1116+12, PKS 1116+12) 		1966–1967 z = 2.1291 Most distant object when discovered.[78][159][160][161]
4C 01.02
(Q0106+01, PKS 0106+1) 		1965–1966 z = 2.0990 Most distant object when discovered.[78][159][160][162]
3C 9 1965 z = 2.018 Most distant object when discovered; first quasar with z > 2.[2][58][159][163][164][165]
3C 147 1964–1965 z = 0.545 First quasar to become the most distant object in the universe, beating radio galaxy 3C 295.[166][167][168][169]
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.[48][56][170][171][172][76][166]
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.[48][76][171][172][173]

Most powerful quasars

10 most luminous quasars[Actually 11 in list]
Rank Quasar Data Refs.
1 SMSS J215728.21-360215.1 Intrinsic bolometric luminosity of ~ 6.9 × 1014 Suns or ~ 2.6 × 1041 watts [174]
2 HS 1946+7658 Intrinsic bolometric luminosity in excess of 1014 Suns or 1041 watts [175][176]
3 SDSS J155152.46+191104.0 Luminosity of over 1041 watts [177][178]
4 HS 1700+6416 Luminosity of over 1041 watts [179]
5 SDSS J010013.02+280225.8 Luminosity of around 1.62 × 1041 watts [180]
6 SBS 1425+606 Luminosity of over 1041 watts – optically brightest for z>3 [181]
J1144-4308 Luminosity of 4.7 × 1040 watts or M_i(z=2) = −29.74 mag, optically brightest in last 9 Gyr [182]
SDSS J074521.78+473436.2 [183][184]
S5 0014+813
SDSS J160455.39+381201.6 z = 2.51, M(i) = 15.84
SDSS J085543.40-001517.7 [185]

See also

References

  1. ↑ Subir Sarkar (Jan 20, 2021). "Re-examining cosmic acceleration". Sommerfeld Theory Colloquium, LMU München. 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. ↑ "Astronomers and immersion kumu announce newly-named discovery: Pōniuāʻena", ʻImiloa Astronomy Center, June 25, 2020, https://imiloahawaii.org/news/poniuaena 
  4. ↑ 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. 
  5. ↑ 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. 
  6. ↑ 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. 
  7. ↑ 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. 
  8. ↑ 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. 
  9. ↑ 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. 
  10. ↑ 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. 
  11. ↑ 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. 
  12. ↑ 12.0 12.1 ScienceDaily, "Quasar Observed in Six Separate Light Reflections", 7 August 2013
  13. ↑ 13.0 13.1 13.2 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. 
  14. ↑ Burud, I.; Courbin, F.; Lidman, C.; Meylan, G.; Magain, P.; Jaunsen, A. O.; Hjorth, J.; Østensen, R. et al. (June 1998). "RX J0911.4+0551: a complex quadruply imaged gravitationally lensed QSO." (in en). The Messenger 92: 29–32. ISSN 0722-6691. Bibcode: 1998Msngr..92...29B. https://ui.adsabs.harvard.edu/abs/1998Msngr..92...29B/abstract. 
  15. ↑ Bade, N.; Siebert, J.; Lopez, S.; Voges, W.; Reimers, D. (January 1997). "RX J0911.4+0551: A new multiple QSO selected from the ROSAT All-Sky Survey." (in en). Astronomy and Astrophysics 317: L13–L16. ISSN 0004-6361. Bibcode: 1997A&A...317L..13B. https://ui.adsabs.harvard.edu/abs/1997A&A...317L..13B/abstract. 
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  106. ↑ 106.0 106.1 106.2 106.3 106.4 106.5 UW-Madison Astronomy, Confirmed High Redshift (z > 5.5) Galaxies - (Last Updated 10 February 2005)
  107. ↑ Iye, Masanori (2006). "A galaxy at a redshift z = 6.96". Nature 443 (7108): 186–8. doi:10.1038/nature05104. PMID 16971942. Bibcode: 2006Natur.443..186I. 
  108. ↑ BBC News, Astronomers claim galaxy record, 11 July 2007, 17:10 GMT 18:10 UK
  109. ↑ New Scientist, New record for Universe's most distant object, 17:19 14 March 2002
  110. ↑ BBC News, Far away stars light early cosmos, 14 March 2002, 11:38 GMT
  111. ↑ BBC News, Most distant galaxy detected, 25 March 2003, 14:28 GMT
  112. ↑ 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. 
  113. ↑ 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. 
  114. ↑ 114.0 114.1 114.2 114.3 114.4 "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. 
  115. ↑ 115.0 115.1 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. 
  116. ↑ PennState Eberly College of Science, X-rays from the Most Distant Quasar Captured with the XMM-Newton Satellite , Dec 2000
  117. ↑ SPACE.com, Most Distant Object in Universe Comes Closer, 1 December 2000
  118. ↑ NOAO Newsletter - NOAO Highlights - March 2000 - Number 61, The Most Distant Quasar Known
  119. ↑ Stern, Daniel (20 March 2002). "Chandra Detection of a Type II Quasar at z = 3.288". The Astrophysical Journal 568 (1): 71–81. doi:10.1086/338886. Bibcode: 2002ApJ...568...71S. 
  120. ↑ 120.0 120.1 Stern, Daniel; Spinrad, Hyron; Eisenhardt, Peter; Bunker, Andrew J.; Dawson, Steve; Stanford, S. A.; Elston, Richard (20 April 2000). "Discovery of a Color-selected Quasar at z = 5.50". The Astrophysical Journal 533 (2): L75–L78. doi:10.1086/312614. PMID 10770694. Bibcode: 2000ApJ...533L..75S. 
  121. ↑ SDSS 98-3 Scientists of Sloan Digital Sky Survey Discover Most Distant Quasar Dec 1998
  122. ↑ Fan, Xiaohui (January 2001). "High-Redshift Quasars Found in Sloan Digital Sky Survey Commissioning Data. IV. Luminosity Function from the Fall Equatorial Stripe Sample". The Astronomical Journal 121 (1): 54–65. doi:10.1086/318033. Bibcode: 2001AJ....121...54F. 
  123. ↑ SIMBAD, Object query : SDSSp J033829.31+002156.3, QSO J0338+0021 -- Quasar
  124. ↑ Henry Fountain (15 December 1998). "Observatory: Finding Distant Quasars". The New York Times: p. F5. https://www.nytimes.com/1998/12/15/science/observatory.html. 
  125. ↑ 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. 
  126. ↑ Smith, J. D (1994). "Multicolor detection of high-redshift quasars, 2: Five objects with Z greater than or approximately equal to 4". The Astronomical Journal 108: 1147. doi:10.1086/117143. Bibcode: 1994AJ....108.1147S. https://resolver.caltech.edu/CaltechAUTHORS:20170213-133303949. 
  127. ↑ New Scientist, issue 1842, 10 October 1992, page 17, Science: Infant galaxy's light show
  128. ↑ FermiLab Scientists of Sloan Digital Sky Survey Discover Most Distant Quasar 8 December 1998
  129. ↑ 129.0 129.1 Hook, I. M; McMahon, R. G (1998). "Discovery of radio-loud quasars with z = 4.72 and z = 4.010". Monthly Notices of the Royal Astronomical Society 294 (1): L7–L12. doi:10.1046/j.1365-8711.1998.01368.x. Bibcode: 1998MNRAS.294L...7H. 
  130. ↑ 130.0 130.1 130.2 130.3 130.4 Turner, Edwin L (1991). "Quasars and galaxy formation. I - the Z greater than 4 objects". The Astronomical Journal 101: 5. doi:10.1086/115663. Bibcode: 1991AJ....101....5T. 
  131. ↑ SIMBAD, Object query : PC 1158+4635, QSO B1158+4635 -- Quasar
  132. ↑ Cowie, Lennox L (1991). "Young Galaxies". Annals of the New York Academy of Sciences 647 (1 Texas/ESO-Cer): 31–41. doi:10.1111/j.1749-6632.1991.tb32157.x. Bibcode: 1991NYASA.647...31C. 
  133. ↑ 133.0 133.1 The New York Times, Peering to Edge of Time, Scientists Are Astonished, 20 November 1989
  134. ↑ 134.0 134.1 134.2 Warren, S. J; Hewett, P. C; Osmer, P. S; Irwin, M. J (1987). "Quasars of redshift z = 4.43 and z = 4.07 in the South Galactic Pole field". Nature 330 (6147): 453. doi:10.1038/330453a0. Bibcode: 1987Natur.330..453W. 
  135. ↑ Levshakov, S. A (1989). "Absorption spectra of quasars". Astrophysics 29 (2): 657–671. doi:10.1007/BF01005972. Bibcode: 1988Ap.....29..657L. 
  136. ↑ The New York Times, Objects Detected in Universe May Be the Most Distant Ever Sighted, 14 January 1988
  137. ↑ John Noble Wilford (10 May 1988). "Astronomers Peer Deeper Into Cosmo". The New York Times: p. C1. https://www.nytimes.com/1988/05/10/science/astronomers-peer-deeper-into-cosmos.html?pagewanted=all. 
  138. ↑ SIMBAD, Object query : Q0000-26, QSO B0000-26 -- Quasar
  139. ↑ 139.0 139.1 139.2 139.3 Schmidt, Maarten; Schneider, Donald P; Gunn, James E (1987). "PC 0910 + 5625 - an optically selected quasar with a redshift of 4.04". The Astrophysical Journal 321: L7. doi:10.1086/184996. Bibcode: 1987ApJ...321L...7S. 
  140. ↑ SIMBAD, Object query : PC 0910+5625, QSO B0910+5625 -- Quasar
  141. ↑ Warren, S. J.; Hewett, P. C.; Irwin, M. J.; McMahon, R. G.; Bridgeland, M. T.; Bunclark, P. S.; Kibblewhite, E. J. (8 January 1987). "First observation of a quasar with a redshift of 4". Nature 325 (6100): 131–133. doi:10.1038/325131a0. Bibcode: 1987Natur.325..131W. ; First observation of a quasar with a redshift of 4
  142. ↑ SIMBAD, Object query : Q0046-293, QSO J0048-2903 -- Quasar
  143. ↑ SIMBAD, Object query : Q1208+1011, QSO B1208+1011 -- Quasar
  144. ↑ NewScientist, Quasar doubles help to fix the Hubble constant, 16 November 1991
  145. ↑ Orwell Astronomical Society (Ipswich) - OASI; Archived Astronomy News Items, 1972 - 1997
  146. ↑ SIMBAD, Object query : PKS 2000-330, QSO J2003-3251 -- Quasar
  147. ↑ 147.0 147.1 OSU Big Ear, History of the OSU Radio Observatory
  148. ↑ SIMBAD, Object query : OQ172, QSO B1442+101 -- Quasar
  149. ↑ 149.0 149.1 149.2 QUASARS - THREE YEARS LATER, 1974
  150. ↑ "The Edge of Night". Time. 23 April 1973. http://www.time.com/time/magazine/article/0,9171,945213,00.html. 
  151. ↑ SIMBAD, Object query : OH471, QSO B0642+449 -- Quasar
  152. ↑ Warren, S J; Hewett, P C (1 August 1990). "The detection of high-redshift quasars". Reports on Progress in Physics 53 (8): 1095–1135. doi:10.1088/0034-4885/53/8/003. Bibcode: 1990RPPh...53.1095W. 
  153. ↑ Bahcall, John N; Oke, J. B (1971). "Some Inferences from Spectrophotometry of Quasi-Stellar Sources". The Astrophysical Journal 163: 235. doi:10.1086/150762. Bibcode: 1971ApJ...163..235B. 
  154. ↑ 154.0 154.1 154.2 Lynds, R; Wills, D (1970). "The Unusually Large Redshift of 4C 05.34". Nature 226 (5245): 532. doi:10.1038/226532a0. PMID 16057373. Bibcode: 1970Natur.226..532L. 
  155. ↑ SIMBAD, Object query : 5C 02.56, 7C 105517.75+495540.95 -- Quasar
  156. ↑ 156.0 156.1 Burbidge, Geoffrey (1968). "The Distribution of Redshifts in Quasi-Stellar Objects, N-Systems and Some Radio and Compact Galaxies". The Astrophysical Journal 154: L41. doi:10.1086/180265. Bibcode: 1968ApJ...154L..41B. 
  157. ↑ Time Magazine, A Farther-Out Quasar, 7 April 1967
  158. ↑ SIMBAD, Object query : QSO B0237-2321, QSO B0237-2321 -- Quasar
  159. ↑ 159.0 159.1 159.2 159.3 Burbidge, Geoffrey (1967). "On the Wavelengths of the Absorption Lines in Quasi-Stellar Objects". The Astrophysical Journal 147: 851. doi:10.1086/149072. Bibcode: 1967ApJ...147..851B. 
  160. ↑ 160.0 160.1 Time Magazine, The Man on the Mountain, Friday, Mar. 11, 1966
  161. ↑ SIMBAD, Object query : Q1116+12, 4C 12.39 -- Quasar
  162. ↑ SIMBAD, Object query : Q0106+01, 4C 01.02 -- Quasar
  163. ↑ Malcolm S. Longair (2006). The Cosmic Century: A History of Astrophysics and Cosmology. Cambridge University Press. p. 7. ISBN 978-0-521-47436-8. https://archive.org/details/cosmiccenturyhis0000long. 
  164. ↑ Schmidt, Maarten (1965). "Large Redshifts of Five Quasi-Stellar Sources". The Astrophysical Journal 141: 1295. doi:10.1086/148217. Bibcode: 1965ApJ...141.1295S. 
  165. ↑ Ivor Robinson, ed. "Introduction: The Discovery of Radio Galaxies and Quasars". Proceedings of the First Texas Symposium on Relativistic Astrophysics. The University of Chicago. http://www.astro.caltech.edu/~george/ay21/qso.txt. 
  166. ↑ 166.0 166.1 Schmidt, Maarten; Matthews, Thomas A (1964). "Redshift of the Quasi-Stellar Radio Sources 3c 47 and 3c 147". The Astrophysical Journal 139: 781. doi:10.1086/147815. Bibcode: 1964ApJ...139..781S. 
  167. ↑ Schmidt, Maarten; Matthews, Thomas A. (1965). "Redshifts of the Quasi-Stellar Radio Sources 3c 47 and 3c 147". in Ivor Robinson. Quasi-Stellar Sources and Gravitational Collapse, Proceedings of the 1st Texas Symposium on Relativistic Astrophysics. University of Chicago Press. p. 269. Bibcode: 1965qssg.conf..269S. 
  168. ↑ Schneider, Donald P; Van Gorkom, J. H; Schmidt, Maarten; Gunn, James E (1992). "Radio properties of optically selected high-redshift quasars. I - VLA observations of 22 quasars at 6 CM". The Astronomical Journal 103: 1451. doi:10.1086/116159. Bibcode: 1992AJ....103.1451S. 
  169. ↑ "Finding the Fastest Galaxy: 76,000 Miles per Second". Time. 10 April 1964. http://aolsvc.timeforkids.kol.aol.com/time/magazine/article/0,9171,875737,00.html. 
  170. ↑ Greenstein, Jesse L; Matthews, Thomas A (1963). "Red-Shift of the Unusual Radio Source: 3C 48". Nature 197 (4872): 1041. doi:10.1038/1971041a0. Bibcode: 1963Natur.197.1041G. 
  171. ↑ 171.0 171.1 "1961 May 12 meeting of the Royal Astronomical Society". The Observatory 81: 113–118. 1961. Bibcode: 1961Obs....81..113.. 
  172. ↑ 172.0 172.1 P., Varshni, Y. (March 1979). "No redshift in 3C 295". Bulletin of the American Astronomical Society 11: 458. Bibcode: 1979BAAS...11..458V. 
  173. ↑ The Origin of Matter Part 4
  174. ↑ Wolf, Christian (2018). "Discovery of the Most Ultra-Luminous QSO Using GAIA, Sky Mapper, and WISE". Publications of the Astronomical Society of Australia 35. doi:10.1017/pasa.2018.22. Bibcode: 2018PASA...35...24W. 
  175. ↑ Bachev, R; Strigachev, A; Semkov, E (2005). "Short-term optical variability of high-redshift QSO's". Monthly Notices of the Royal Astronomical Society 358 (3): 774–780. doi:10.1111/j.1365-2966.2005.08708.x. Bibcode: 2005MNRAS.358..774B. 
  176. ↑ Kuhn, O; Bechtold, J; Cutri, R; Elvis, M; Rieke, M (1995). "The spectral energy distribution of the z = 3 quasar: HS 1946+7658". The Astrophysical Journal 438: 643. doi:10.1086/175107. Bibcode: 1995ApJ...438..643K. 
  177. ↑ Pâris, Isabelle (2012). "The Sloan Digital Sky Survey quasar catalog: Ninth data release". Astronomy & Astrophysics 548: A66. doi:10.1051/0004-6361/201220142. Bibcode: 2012A&A...548A..66P. 
  178. ↑ Stern, Jonathan; Hennawi, Joseph F; Pott, Jörg-Uwe (2015). "Spatially Resolving the Kinematics of the <100 μas Quasar Broad Line Region using Spectroastrometry". The Astrophysical Journal 804 (1): 57. doi:10.1088/0004-637X/804/1/57. Bibcode: 2015ApJ...804...57S. 
  179. ↑ Eisenhardt, Peter R. M (2012). "The First Hyper-Luminous Infrared Galaxy Discovered by WISE". The Astrophysical Journal 755 (2): 173. doi:10.1088/0004-637X/755/2/173. Bibcode: 2012ApJ...755..173E. 
  180. ↑ Wu, Xue-Bing (2015). "An ultra-luminous quasar with a twelve-billion-solar-mass black hole at redshift 6.30". Nature 518 (7540): 512–515. doi:10.1038/nature14241. PMID 25719667. Bibcode: 2015Natur.518..512W. 
  181. ↑ Stepanian, J. A.; Green, R. F.; Foltz, C. B.; Chaffee, F.; Chavushyan, V. H.; Lipovetsky, V. A.; Erastova, L. K. (December 2001). "Spectroscopy and Photometry of Stellar Objects from the Second Byurakan Survey". The Astronomical Journal 122 (6): 3361–3382. doi:10.1086/324460. Bibcode: 2001AJ....122.3361S. 
  182. ↑ Onken, Christopher A.; Lai, Samuel; Wolf, Christian; Lucy, Adrian B.; Hon, Wei Jeat; Tisserand, Patrick; Sokoloski, Jennifer L.; Luna, Gerardo J. M. et al. (2022-06-08). "Discovery of the most luminous quasar of the last 9 Gyr". Publications of the Astronomical Society of Australia 39. doi:10.1017/pasa.2022.36. Bibcode: 2022PASA...39...37O. 
  183. ↑ Schneider, Donald P (2010). "The Sloan Digital Sky Survey Quasar Catalog V. Seventh Data Release". The Astronomical Journal 139 (6): 2360–2373. doi:10.1088/0004-6256/139/6/2360. Bibcode: 2010AJ....139.2360S. 
  184. ↑ Schneider, Donald P. (July 2007). "The Sloan Digital Sky Survey Quasar Catalog. IV. Fifth Data Release". The Astronomical Journal 134 (1): 102–117. doi:10.1086/518474. Bibcode: 2007AJ....134..102S. 
  185. ↑ Wu, Xue-Bing (2010). "A very bright i=16.44 quasar in the 'redshift desert' discovered by LAMOST". Research in Astronomy and Astrophysics 10 (8): 737. doi:10.1088/1674-4527/10/8/003. Bibcode: 2010RAA....10..737W. 



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