Ενεργός Γαλαξίας (Greek Wikipedia)

Analysis of information sources in references of the Wikipedia article "Ενεργός Γαλαξίας" in Greek language version.

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Philip Uttley, Ian M. McHardy (2004). «A brief review of long-term X-ray and optical variability in radio-quiet AGN». Prog.Theor.Phys. 155: 170-177. doi:10.1143/PTPS.155.170. http://arXiv:astro-ph/0402407v1. ^{[νεκρός σύνδεσμος]}

arxiv.org

Vasudevan, R. V.; Fabian, A. C.; Gandhi, P.; Winter, L. M.; Mushotzky, R. F. (2010). «The power output of local obscured and unobscured AGN: crossing the absorption barrier with Swift/BAT and IRAS». Monthly Notices of the Royal Astronomical Society 402 (2): 1081-1098. doi:10.1111/j.1365-2966.2009.15936.x. Bibcode: 2010MNRAS.402.1081V. http://arxiv.org/abs/0910.5256.
G. Risaliti, M. Elvis (2004). «A panchromatic view of AGN». Supermassive Black Holes in the Distant Universe 308: 187. Bibcode: 2004ASSL..308..187R. http://arxiv.org/abs/astro-ph/0403618R. ^{[νεκρός σύνδεσμος]}
Panessa, F.; Bassani, L.; Cappi, M.; Dadina, M.; Barcons, X.; Carrera, F. J.; Ho, L. C.; Iwasawa, K. (2006). «On the X-ray, optical emission line and black hole mass properties of local Seyfert galaxies». Astronomy and Astrophysics 455 (1): 173-185. doi:10.1051/0004-6361:20064894. Bibcode: 2006A&A...455..173P. http://arxiv.org/PS_cache/astro-ph/pdf/0605/0605236v1.pdf.
Beckmann, V.; Soldi, S.; Ricci, C.; Alfonso-Garzón, J.; Courvoisier, T. J.-L.; Domingo, A.; Gehrels, N.; Lubiński, P.; Mas-Hesse, J. M.; Zdziarski, A. A. (2009). «The second INTEGRAL AGN catalogue». Astronomy and Astrophysics 505 (1): 417-439. doi:10.1051/0004-6361/200912111. Bibcode: 2009A&A...505..417B. http://arxiv.org/PS_cache/arxiv/pdf/0907/0907.0654v2.pdf.
Gandhi, P.; Horst, H.; Smette, A.; Hönig, S.; Comastri, A.; Gilli, R.; Vignali, C.; Duschl, W. (2009). «Resolving the mid-infrared cores of local Seyferts». Astronomy and Astrophysics 502 (2): 457-472. doi:10.1051/0004-6361/200912111. Bibcode: 2009A&A...505..417B. http://arxiv.org/PS_cache/arxiv/pdf/0902/0902.2777v1.pdf.

doi.org

dx.doi.org

Vasudevan, R. V.; Fabian, A. C.; Gandhi, P.; Winter, L. M.; Mushotzky, R. F. (2010). «The power output of local obscured and unobscured AGN: crossing the absorption barrier with Swift/BAT and IRAS». Monthly Notices of the Royal Astronomical Society 402 (2): 1081-1098. doi:10.1111/j.1365-2966.2009.15936.x. Bibcode: 2010MNRAS.402.1081V. http://arxiv.org/abs/0910.5256.
Philip Uttley, Ian M. McHardy (2004). «A brief review of long-term X-ray and optical variability in radio-quiet AGN». Prog.Theor.Phys. 155: 170-177. doi:10.1143/PTPS.155.170. http://arXiv:astro-ph/0402407v1. ^{[νεκρός σύνδεσμος]}
Seyfert, Carl K. (1943). «Nuclear Emission in Spiral Nebulae.». ApJ 97: 28. doi:10.1086/144488. Bibcode: 1943ApJ....97...28S. http://adsabs.harvard.edu/abs/1943ApJ....97...28S.
Matthews, Thomas A.; Sandage, Allan R. (1963). «Optical Identification of 3c 48, 3c 196, and 3c 286 with Stellar Objects.». ApJ 138: 30. doi:10.1086/147615. Bibcode: 1963ApJ...138...30M. http://adsabs.harvard.edu/abs/1963ApJ...138...30M.
Schmidt, M. (1963). «3C 273 : A Star-Like Object with Large Red-Shift». Nature 197 (4872): 1040. doi:10.1038/1971040a0. Bibcode: 1963Natur.197.1040S. http://www.nature.com/nature/journal/v197/n4872/pdf/1971040a0.pdf.
Burbidge, G. R. (1961). «Galactic Explosions as Sources of Radio Emission». Nature 190 (4781): 1053-1056. doi:10.1038/1901053a0. Bibcode: 1961Natur.190.1053B. http://adsabs.harvard.edu/abs/1961Natur.190.1053B.
A. G. W. Cameron (1962). «Star Formation in Elliptical Galaxies and Intense Radio Sources». Nature 194: 963-964. doi:10.1038/194963a0. http://www.nature.com/nature/journal/v194/n4832/abs/194963a0.html.
Spitzer, Lyman, Jr.; Saslaw, William C. (1966). «On the Evolution of Galactic Nuclei». ApJ 143: 400. doi:10.1086/148523. Bibcode: 1966ApJ...143..400S. http://adsabs.harvard.edu/cgi-bin/bib_query?1966ApJ...143..400S.
Arons, J.; Kulsrud, R. M.; Ostriker, J. P. (1975). «A multiple pulsar model for quasi-stellar objects and active galactic nuclei». ApJ 198: 687-705. doi:10.1086/153647. Bibcode: 1975ApJ...198..687A. http://adsabs.harvard.edu/cgi-bin/bib_query?1975ApJ...198..687A.
Hoyle, F.; Fowler, W. A. (1963). «Nature of Strong Radio Sources». Nature 197 (4867): 533-535. doi:10.1038/197533a0. Bibcode: 1963Natur.197..533H. http://www.nature.com/nature/journal/v197/n4867/abs/197533a0.html.
Salpeter, E. E. (1964). «Accretion of Interstellar Matter by Massive Objects.». ApJ 140: 796-800. doi:10.1086/147973. Bibcode: 1964ApJ...140..796S. http://adsabs.harvard.edu/cgi-bin/bib_query?1964ApJ...140..796S.
Elvis, Martin; Wilkes, Belinda J.; McDowell, Jonathan C.; Green, Richard F.; Bechtold, Jill; Willner, S. P.; Oey, M. S.; Polomski, Elisha; Cutri, Roc (1994). «Atlas of quasar energy distributions». The Astrophysical Journal Supplement Series 95 (1): 1-68. doi:10.1086/192093. Bibcode: 1994ApJS...95....1E. http://adsabs.harvard.edu/abs/1994ApJS...95....1E.
Woltjer, L. (1959). «Emission Nuclei in Galaxies.». ApJ 130: 38. doi:10.1086/146694. Bibcode: 1959ApJ...130...38W. http://adsabs.harvard.edu/cgi-bin/bib_query?1959ApJ...130...38W.
Lynden-Bell, D. (1969). «Galactic Nuclei as Collapsed Old Quasars». Nature 223 (5207): 690-694. doi:10.1038/223690a0. Bibcode: 1969Natur.223..690L. http://www.nature.com/nature/journal/v223/n5207/abs/223690a0.html.
Pringle, J. E. (1981). «Accretion discs in astrophysics». Astron. Astroph. 19: 137-162. doi:10.1146/annurev.aa.19.090181.001033. Bibcode: 1981ARA&A..19..137P. http://adsabs.harvard.edu/abs/1981ARA%26A..19..137P.
Ho, Luis C. (2009). «Radiatively Inefficient Accretion in Nearby Galaxies». The Astrophysical Journal 699 (1): 626-637. doi:10.1088/0004-637X/699/1/626. Bibcode: 2009ApJ...699..626H. http://iopscience.iop.org/0004-637X/699/1/626/pdf/apj_699_1_626.pdf.
Williams, Reva Kay (1995). «Extracting x rays, γ rays, and relativistic e-e+ pairs from supermassive Kerr black holes using the Penrose mechanism». Physical Review D (Particles, Fields, Gravitation, and Cosmology) 51 (10): 5387-5427. doi:10.1103/PhysRevD.51.5387. Bibcode: 1995PhRvD..51.5387W. http://adsabs.harvard.edu/abs/1995PhRvD..51.5387W.
Williams, Reva Kay (2004). «Collimated Escaping Vortical Polar e-e+ Jets Intrinsically Produced by Rotating Black Holes and Penrose Processes». ApJ 611 (2): 952-963. doi:10.1086/422304. Bibcode: 2004ApJ...611..952W. http://adsabs.harvard.edu/abs/2004ApJ...611..952W.
Merloni, Andrea; Heinz, Sebastian; di Matteo, Tiziana (2003). «A Fundamental Plane of black hole activity». Monthly Notices of the Royal Astronomical Society 345 (4): 1057-1076. doi:10.1046/j.1365-2966.2003.07017.x. Bibcode: 2003MNRAS.345.1057M. http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?2003MNRAS.345.1057M&data_type=PDF_HIGH&whole_paper=YES&type=PRINTER&filetype=.pdf.
Gültekin, Kayhan; Cackett, Edward M.; Miller, Jon M.; Di Matteo, Tiziana; Markoff, Sera; Richstone, Douglas O. (2009). «The Fundamental Plane of Accretion onto Black Holes with Dynamical Masses». The Astrophysical Journal 706 (1): 404-416. doi:10.1088/0004-637X/706/1/404. Bibcode: 2009ApJ...706..404G. http://iopscience.iop.org/0004-637X/706/1/404/pdf/apj_706_1_404.pdf.
Panessa, F.; Bassani, L.; Cappi, M.; Dadina, M.; Barcons, X.; Carrera, F. J.; Ho, L. C.; Iwasawa, K. (2006). «On the X-ray, optical emission line and black hole mass properties of local Seyfert galaxies». Astronomy and Astrophysics 455 (1): 173-185. doi:10.1051/0004-6361:20064894. Bibcode: 2006A&A...455..173P. http://arxiv.org/PS_cache/astro-ph/pdf/0605/0605236v1.pdf.
Beckmann, V.; Soldi, S.; Ricci, C.; Alfonso-Garzón, J.; Courvoisier, T. J.-L.; Domingo, A.; Gehrels, N.; Lubiński, P.; Mas-Hesse, J. M.; Zdziarski, A. A. (2009). «The second INTEGRAL AGN catalogue». Astronomy and Astrophysics 505 (1): 417-439. doi:10.1051/0004-6361/200912111. Bibcode: 2009A&A...505..417B. http://arxiv.org/PS_cache/arxiv/pdf/0907/0907.0654v2.pdf.
Gandhi, P.; Horst, H.; Smette, A.; Hönig, S.; Comastri, A.; Gilli, R.; Vignali, C.; Duschl, W. (2009). «Resolving the mid-infrared cores of local Seyferts». Astronomy and Astrophysics 502 (2): 457-472. doi:10.1051/0004-6361/200912111. Bibcode: 2009A&A...505..417B. http://arxiv.org/PS_cache/arxiv/pdf/0902/0902.2777v1.pdf.
Antonucci, R. (1993). «Unified Models for Active Galactic Nuclei and Quasars». Annual Reviews in Astronomy and Astrophysics 31 (1): 473–521. doi:10.1146/annurev.aa.31.090193.002353. Bibcode: 1993ARA&A..31..473A.
Urry, P.; Paolo Padovani (1995). «Unified schemes for radioloud AGN». Publications of the Astronomical Society of the Pacific 107: 803–845. doi:10.1086/133630. Bibcode: 1995PASP..107..803U.

harvard.edu

adsabs.harvard.edu

Vasudevan, R. V.; Fabian, A. C.; Gandhi, P.; Winter, L. M.; Mushotzky, R. F. (2010). «The power output of local obscured and unobscured AGN: crossing the absorption barrier with Swift/BAT and IRAS». Monthly Notices of the Royal Astronomical Society 402 (2): 1081-1098. doi:10.1111/j.1365-2966.2009.15936.x. Bibcode: 2010MNRAS.402.1081V. http://arxiv.org/abs/0910.5256.
Clavel, J., Reichert, G. A., Alloin, D., Crenshaw, D. M., Kriss, G., Krolik, J. H., (1991). «Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. I - an 8 month campaign of monitoring NGC 5548 with IUE». ApJ 366: 64-81. ISSN 0004-637X. Bibcode: 1991ApJ...366...64C. http://adsabs.harvard.edu/full/1991ApJ...366...64C.
Seyfert, Carl K. (1943). «Nuclear Emission in Spiral Nebulae.». ApJ 97: 28. doi:10.1086/144488. Bibcode: 1943ApJ....97...28S. http://adsabs.harvard.edu/abs/1943ApJ....97...28S.
Matthews, Thomas A.; Sandage, Allan R. (1963). «Optical Identification of 3c 48, 3c 196, and 3c 286 with Stellar Objects.». ApJ 138: 30. doi:10.1086/147615. Bibcode: 1963ApJ...138...30M. http://adsabs.harvard.edu/abs/1963ApJ...138...30M.
Schmidt, M. (1963). «3C 273 : A Star-Like Object with Large Red-Shift». Nature 197 (4872): 1040. doi:10.1038/1971040a0. Bibcode: 1963Natur.197.1040S. http://www.nature.com/nature/journal/v197/n4872/pdf/1971040a0.pdf.
Burbidge, G. R. (1961). «Galactic Explosions as Sources of Radio Emission». Nature 190 (4781): 1053-1056. doi:10.1038/1901053a0. Bibcode: 1961Natur.190.1053B. http://adsabs.harvard.edu/abs/1961Natur.190.1053B.
Spitzer, Lyman, Jr.; Saslaw, William C. (1966). «On the Evolution of Galactic Nuclei». ApJ 143: 400. doi:10.1086/148523. Bibcode: 1966ApJ...143..400S. http://adsabs.harvard.edu/cgi-bin/bib_query?1966ApJ...143..400S.
Arons, J.; Kulsrud, R. M.; Ostriker, J. P. (1975). «A multiple pulsar model for quasi-stellar objects and active galactic nuclei». ApJ 198: 687-705. doi:10.1086/153647. Bibcode: 1975ApJ...198..687A. http://adsabs.harvard.edu/cgi-bin/bib_query?1975ApJ...198..687A.
Hoyle, F.; Fowler, W. A. (1963). «On the nature of strong radio sources». ApJ 125: 169. Bibcode: 1963MNRAS.125..169H. http://adsabs.harvard.edu/cgi-bin/bib_query?1963MNRAS.125..169H.
Hoyle, F.; Fowler, W. A. (1963). «Nature of Strong Radio Sources». Nature 197 (4867): 533-535. doi:10.1038/197533a0. Bibcode: 1963Natur.197..533H. http://www.nature.com/nature/journal/v197/n4867/abs/197533a0.html.
Salpeter, E. E. (1964). «Accretion of Interstellar Matter by Massive Objects.». ApJ 140: 796-800. doi:10.1086/147973. Bibcode: 1964ApJ...140..796S. http://adsabs.harvard.edu/cgi-bin/bib_query?1964ApJ...140..796S.
G. Risaliti, M. Elvis (2004). «A panchromatic view of AGN». Supermassive Black Holes in the Distant Universe 308: 187. Bibcode: 2004ASSL..308..187R. http://arxiv.org/abs/astro-ph/0403618R. ^{[νεκρός σύνδεσμος]}
Elvis, Martin; Wilkes, Belinda J.; McDowell, Jonathan C.; Green, Richard F.; Bechtold, Jill; Willner, S. P.; Oey, M. S.; Polomski, Elisha; Cutri, Roc (1994). «Atlas of quasar energy distributions». The Astrophysical Journal Supplement Series 95 (1): 1-68. doi:10.1086/192093. Bibcode: 1994ApJS...95....1E. http://adsabs.harvard.edu/abs/1994ApJS...95....1E.
Elvis, M.; Maccacaro, T.; Wilson, A. S.; Ward, M. J.; Penston, M. V.; Fosbury, R. A. E.; Perola, G. C. (1978). «Seyfert galaxies as X-ray sources». Royal Astronomical Society, Monthly Notices 183: 129-157. Bibcode: 1978MNRAS.183..129E. http://adsabs.harvard.edu/cgi-bin/bib_query?1978MNRAS.183..129E.
Woltjer, L. (1959). «Emission Nuclei in Galaxies.». ApJ 130: 38. doi:10.1086/146694. Bibcode: 1959ApJ...130...38W. http://adsabs.harvard.edu/cgi-bin/bib_query?1959ApJ...130...38W.
Lynden-Bell, D. (1969). «Galactic Nuclei as Collapsed Old Quasars». Nature 223 (5207): 690-694. doi:10.1038/223690a0. Bibcode: 1969Natur.223..690L. http://www.nature.com/nature/journal/v223/n5207/abs/223690a0.html.
Pringle, J. E. (1981). «Accretion discs in astrophysics». Astron. Astroph. 19: 137-162. doi:10.1146/annurev.aa.19.090181.001033. Bibcode: 1981ARA&A..19..137P. http://adsabs.harvard.edu/abs/1981ARA%26A..19..137P.
Ho, Luis C. (2009). «Radiatively Inefficient Accretion in Nearby Galaxies». The Astrophysical Journal 699 (1): 626-637. doi:10.1088/0004-637X/699/1/626. Bibcode: 2009ApJ...699..626H. http://iopscience.iop.org/0004-637X/699/1/626/pdf/apj_699_1_626.pdf.
Blandford, R. D.; Znajek, R. L. (1977). «Electromagnetic extraction of energy from Kerr black holes». Royal Astronomical Society, Monthly Notices 179: 433-456. Bibcode: 1977MNRAS.179..433B. http://adsabs.harvard.edu/abs/1977MNRAS.179..433B.
Penrose, Roger (1969). «Gravitational Collapse: the Role of General Relativity». Rivista del Nuovo Cimento 1: 252. Bibcode: 1969NCimR...1..252P. http://adsabs.harvard.edu/abs/1969NCimR...1..252P.
Williams, Reva Kay (1995). «Extracting x rays, γ rays, and relativistic e-e+ pairs from supermassive Kerr black holes using the Penrose mechanism». Physical Review D (Particles, Fields, Gravitation, and Cosmology) 51 (10): 5387-5427. doi:10.1103/PhysRevD.51.5387. Bibcode: 1995PhRvD..51.5387W. http://adsabs.harvard.edu/abs/1995PhRvD..51.5387W.
Williams, Reva Kay (2004). «Collimated Escaping Vortical Polar e-e+ Jets Intrinsically Produced by Rotating Black Holes and Penrose Processes». ApJ 611 (2): 952-963. doi:10.1086/422304. Bibcode: 2004ApJ...611..952W. http://adsabs.harvard.edu/abs/2004ApJ...611..952W.
Merloni, Andrea; Heinz, Sebastian; di Matteo, Tiziana (2003). «A Fundamental Plane of black hole activity». Monthly Notices of the Royal Astronomical Society 345 (4): 1057-1076. doi:10.1046/j.1365-2966.2003.07017.x. Bibcode: 2003MNRAS.345.1057M. http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?2003MNRAS.345.1057M&data_type=PDF_HIGH&whole_paper=YES&type=PRINTER&filetype=.pdf.
Gültekin, Kayhan; Cackett, Edward M.; Miller, Jon M.; Di Matteo, Tiziana; Markoff, Sera; Richstone, Douglas O. (2009). «The Fundamental Plane of Accretion onto Black Holes with Dynamical Masses». The Astrophysical Journal 706 (1): 404-416. doi:10.1088/0004-637X/706/1/404. Bibcode: 2009ApJ...706..404G. http://iopscience.iop.org/0004-637X/706/1/404/pdf/apj_706_1_404.pdf.
Panessa, F.; Bassani, L.; Cappi, M.; Dadina, M.; Barcons, X.; Carrera, F. J.; Ho, L. C.; Iwasawa, K. (2006). «On the X-ray, optical emission line and black hole mass properties of local Seyfert galaxies». Astronomy and Astrophysics 455 (1): 173-185. doi:10.1051/0004-6361:20064894. Bibcode: 2006A&A...455..173P. http://arxiv.org/PS_cache/astro-ph/pdf/0605/0605236v1.pdf.
Beckmann, V.; Soldi, S.; Ricci, C.; Alfonso-Garzón, J.; Courvoisier, T. J.-L.; Domingo, A.; Gehrels, N.; Lubiński, P.; Mas-Hesse, J. M.; Zdziarski, A. A. (2009). «The second INTEGRAL AGN catalogue». Astronomy and Astrophysics 505 (1): 417-439. doi:10.1051/0004-6361/200912111. Bibcode: 2009A&A...505..417B. http://arxiv.org/PS_cache/arxiv/pdf/0907/0907.0654v2.pdf.
Gandhi, P.; Horst, H.; Smette, A.; Hönig, S.; Comastri, A.; Gilli, R.; Vignali, C.; Duschl, W. (2009). «Resolving the mid-infrared cores of local Seyferts». Astronomy and Astrophysics 502 (2): 457-472. doi:10.1051/0004-6361/200912111. Bibcode: 2009A&A...505..417B. http://arxiv.org/PS_cache/arxiv/pdf/0902/0902.2777v1.pdf.
Antonucci, R. (1993). «Unified Models for Active Galactic Nuclei and Quasars». Annual Reviews in Astronomy and Astrophysics 31 (1): 473–521. doi:10.1146/annurev.aa.31.090193.002353. Bibcode: 1993ARA&A..31..473A.
Urry, P.; Paolo Padovani (1995). «Unified schemes for radioloud AGN». Publications of the Astronomical Society of the Pacific 107: 803–845. doi:10.1086/133630. Bibcode: 1995PASP..107..803U.

articles.adsabs.harvard.edu

Merloni, Andrea; Heinz, Sebastian; di Matteo, Tiziana (2003). «A Fundamental Plane of black hole activity». Monthly Notices of the Royal Astronomical Society 345 (4): 1057-1076. doi:10.1046/j.1365-2966.2003.07017.x. Bibcode: 2003MNRAS.345.1057M. http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?2003MNRAS.345.1057M&data_type=PDF_HIGH&whole_paper=YES&type=PRINTER&filetype=.pdf.

hea-harvard.edu

Martin Elvis. «Annotated Quasar Spectral Energy Distribution».

iop.org

iopscience.iop.org

Ho, Luis C. (2009). «Radiatively Inefficient Accretion in Nearby Galaxies». The Astrophysical Journal 699 (1): 626-637. doi:10.1088/0004-637X/699/1/626. Bibcode: 2009ApJ...699..626H. http://iopscience.iop.org/0004-637X/699/1/626/pdf/apj_699_1_626.pdf.
Gültekin, Kayhan; Cackett, Edward M.; Miller, Jon M.; Di Matteo, Tiziana; Markoff, Sera; Richstone, Douglas O. (2009). «The Fundamental Plane of Accretion onto Black Holes with Dynamical Masses». The Astrophysical Journal 706 (1): 404-416. doi:10.1088/0004-637X/706/1/404. Bibcode: 2009ApJ...706..404G. http://iopscience.iop.org/0004-637X/706/1/404/pdf/apj_706_1_404.pdf.

mpg.de

mpe.mpg.de

Andrea Merloni. «Accretion disc coronae and magnetic flares».

nature.com

Schmidt, M. (1963). «3C 273 : A Star-Like Object with Large Red-Shift». Nature 197 (4872): 1040. doi:10.1038/1971040a0. Bibcode: 1963Natur.197.1040S. http://www.nature.com/nature/journal/v197/n4872/pdf/1971040a0.pdf.
A. G. W. Cameron (1962). «Star Formation in Elliptical Galaxies and Intense Radio Sources». Nature 194: 963-964. doi:10.1038/194963a0. http://www.nature.com/nature/journal/v194/n4832/abs/194963a0.html.
Hoyle, F.; Fowler, W. A. (1963). «Nature of Strong Radio Sources». Nature 197 (4867): 533-535. doi:10.1038/197533a0. Bibcode: 1963Natur.197..533H. http://www.nature.com/nature/journal/v197/n4867/abs/197533a0.html.
Lynden-Bell, D. (1969). «Galactic Nuclei as Collapsed Old Quasars». Nature 223 (5207): 690-694. doi:10.1038/223690a0. Bibcode: 1969Natur.223..690L. http://www.nature.com/nature/journal/v223/n5207/abs/223690a0.html.

open.ac.uk

openlearn.open.ac.uk

ua.edu

astr.ua.edu

William C. Keel. «Markarian 421 across the Electromagnetic Spectrum».
William C. Keel. «Composite emission-line spectrum of NGC 4151».
William C. Keel. «Optical spectra of various kinds of active galactic nuclei».
William C. Keel. «Variability of Active Galactic Nuclei in various spectral domains».
William C. Keel. «The optical jet of M87».
William C. Keel. «Optical jets in radio galaxies».
William C. Keel. «The blowtorch jet in the radio galaxy NGC 6251».
William C. Keel. «The brightest quasar: 3C 273 and its jet».
William C. Keel. «The superluminal radio source in the gamma-ray blazar 3C 279».
«The MKI and the discovery of Quasars».
William C. Keel. «Radio structure in radio galaxies».

umd.edu

astro.umd.edu

«Accretion disk coronae». Αρχειοθετήθηκε από το πρωτότυπο στις 13 Ιανουαρίου 2012. Ανακτήθηκε στις 25 Ιουλίου 2011.

virginia.edu

astro.virginia.edu

«AGN Detection and Identification - Radio Surveys». Αρχειοθετήθηκε από το πρωτότυπο στις 1 Φεβρουαρίου 2011. Ανακτήθηκε στις 22 Ιουλίου 2011.

web.archive.org

«AGN Detection and Identification - Radio Surveys». Αρχειοθετήθηκε από το πρωτότυπο στις 1 Φεβρουαρίου 2011. Ανακτήθηκε στις 22 Ιουλίου 2011.
«Accretion disk coronae». Αρχειοθετήθηκε από το πρωτότυπο στις 13 Ιανουαρίου 2012. Ανακτήθηκε στις 25 Ιουλίου 2011.

worldcat.org

Clavel, J., Reichert, G. A., Alloin, D., Crenshaw, D. M., Kriss, G., Krolik, J. H., (1991). «Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. I - an 8 month campaign of monitoring NGC 5548 with IUE». ApJ 366: 64-81. ISSN 0004-637X. Bibcode: 1991ApJ...366...64C. http://adsabs.harvard.edu/full/1991ApJ...366...64C.