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Date and Time of the Query: 2019-03-20 T23:14:45 PDT
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Reference(s) for object [HB89] 0957+561

341 reference(s) found in NED.


1. 2018MNRAS.476.5075S Stacey, H. R.; ... Gravitational lensing reveals extreme dust-obscured star formation in quasar hos...
2. 2018ApJ...862..104M Mediavilla, E.;... Systematic Redshift of the Fe III UV Lines in Quasars: Measuring Supermassive Bl...
3. 2018ApJ...859...50F Fian, C.; Guerr... Microlensing and Intrinsic Variability of the Broad Emission Lines of Lensed Qua...
4. 2018A&A...616A.118G Gil-Merino, R.;... New database for a sample of optically bright lensed quasars in the northern hem...
5. 2016MNRAS.459..573A AL Otaibi, Sult... Kernel regression estimates of time delays between gravitationally lensed fluxes
6. 2016MNRAS.456..870B Bruderer, Claud... Light versus dark in strong-lens galaxies: dark matter haloes that are rounder t...
7. 2016ApJ...832...46M Mediavilla, E.;... Peculiar Transverse Velocities of Galaxies from Quasar Microlensing. Tentative E...
8. 2016ApJ...818..113N Neeleman, Marce... The H I Content of the Universe Over the Past 10 GYRS
9. 2015MNRAS.452.2423Y Yuan, C. C.; Wa... Cosmological test using strong gravitational lensing systems
10. 2015ApJS..219...39R Richards, Gordo... Bayesian High-redshift Quasar Classification from Optical and Mid-IR Photometry
11. 2015ApJ...806..251J Jimenez-Vicente... Probing the Dark Matter Radial Profile in Lens Galaxies and the Size of X-Ray Em...
12. 2015ApJ...805..161W Walton, D. J.; ... Broad Iron Emission from Gravitationally Lensed Quasars Observed by Chandra
13. 2015ApJ...799..149J Jimenez-Vicente... Dark Matter Mass Fraction in Lens Galaxies: New Estimates from Microlensing
14. 2015ApJ...799...48B Barnacka, Anna;... Strongly Lensed Jets, Time Delays, and the Value of H_0_
15. 2015AJ....149....2M Melia, Fulvio; ... A Comparison of Cosmological Models Using Strong Gravitational Lensing Galaxies
16. 2015A&A...583A..75S Souchay, J.; An... The third release of the Large Quasar Astrometric Catalog (LQAC-3): a compilatio...
17. 2015A&A...580A..38R Rathna Kumar, S... H_0_ from ten well-measured time delay lenses
18. 2014MNRAS.437..600S Sereno, Mauro; ... Hubble constant and dark energy inferred from free-form determined time delay di...
19. 2014ApJS..215...14D D'Abrusco, R.; ... The WISE Blazar-like Radio-loud Sources: An All-sky Catalog of Candidate gamma-r...
20. 2014ApJS..212...15F Farnes, J. S.; ... A Broadband Polarization Catalog of Extragalactic Radio Sources
21. 2014ApJ...788..190W Wei, Jun-Jie; W... A Comparison of Cosmological Models Using Time Delay Lenses
22. 2014ApJ...783...47J Jimenez-Vicente... The Average Size and Temperature Profile of Quasar Accretion Disks
23. 2013MNRAS.431.1528B Balmes, I.; Cor... Bayesian approach to gravitational lens model selection: constraining H_0_ with ...
24. 2013ApJ...778..123G Guerras, E.; Me... Microlensing of Quasar Ultraviolet Iron Emission
25. 2013ApJ...764..160G Guerras, E.; Me... Microlensing of Quasar Broad Emission Lines: Constraints on Broad Line Region Si...
26. 2012MNRAS.421..971R Rogerson, J. A.... Investigating Mg II absorption in paired quasar sight-lines
27. 2012ApJ...755...82M Motta, V.; Medi... Measuring Microlensing Using Spectra of Multiply Lensed Quasars
28. 2012ApJ...744..104H Hainline, Laura... A New Microlensing Event in the Doubly Imaged Quasar Q 0957+561
29. 2012ApJ...744...90B Bate, N. F.; Fl... A Graphics Processing Unit-enabled, High-resolution Cosmological Microlensing Pa...
30. 2012ApJ...744...47G Gil-Merino, Rod... Accretion onto the Supermassive Black Hole in the High-redshift Radio-loud AGN 0...
31. 2012AJ....143..120O Oguri, Masamune... The Sloan Digital Sky Survey Quasar Lens Search. VI. Constraints on Dark Energy ...
32. 2012A&A...540A.132S Shalyapin, V. N... A 5.5-year robotic optical monitoring of Q0957+561: substructure in a non-local ...
33. 2012A&A...538A..43C Cao, Shuo; Zhu,... Constraints on cosmological models from lens redshift data
34. 2012A&A...537A..99S Souchay, J.; An... The second release of the Large Quasar Astrometric Catalog (LQAC-2)
35. 2011MNRAS.413.2121M Mutka, P. T. Cusped mass density profiles and magnification ratios of double-image gravitatio...
36. 2011ApJ...742...93A Assef, R. J.; D... Black Hole Mass Estimates Based on C IV are Consistent with Those Based on the B...
37. 2011ApJ...740...97L Leier, Dominik;... Resolving the Baryon-fraction Profile in Lensing Galaxies
38. 2011ApJ...738...96M Mosquera, A. M.... The Microlensing Properties of a Sample of 87 Lensed Quasars
39. 2011ApJ...736...42R Ribaudo, Joseph... A Hubble Space Telescope Study of Lyman Limit Systems: Census and Evolution
40. 2011ApJ...730..108R Riechers, Domin... Molecular Gas in Lensed z >2 Quasar Host Galaxies and the Star Formation Law for...
41. 2010MNRAS.409..679C Cooke, Ryan; Pe... A newly discovered DLA and associated Ly-{alpha} emission in the spectra of the ...
42. 2010ApJ...712.1378P Paraficz, Danut... The Hubble Constant Inferred from 18 Time-delay Lenses
43. 2010ApJ...711..246F Fadely, R.; Kee... Improved Constraints on the Gravitational Lens Q0957+561. II. Strong Lensing
44. 2010A&A...520A.113B Bourda, G.; Cha... VLBI observations of optically-bright extragalactic radio sources for the alignm...
45. 2010A&A...515A...2S Streblyanska, A... A revision of the X-ray absorption nature of BALQSOs
46. 2009MNRAS.397..943M Monier, E. M.; ... On the sizes of neutral hydrogen regions giving rise to damped Ly-{alpha} absorp...
47. 2009MNRAS.396..223D D'Abrusco, R.; ... Quasar candidates selection in the Virtual Observatory era
48. 2009ApJS..184..138H Haakonsen, Chri... XID II: Statistical Cross-Association of ROSAT Bright Source Catalog X-ray Sourc...
49. 2009ApJ...706.1451M Mediavilla, E.;... Microlensing-based Estimate of the Mass Fraction in Compact Objects in Lens Gala...
50. 2009ApJ...702.1230T Taylor, A. R.; ... A Rotation Measure Image of the Sky
51. 2009ApJ...697.1793N Nakajima, R.; B... Improved Constraints on the Gravitational Lens Q0957+561. I. Weak Lensing
52. 2008MNRAS.387.1303S Shan, Huan Yuan... An analytic model for non-spherical lenses in covariant MOdified Newtonian Dynam...
53. 2008AJ....135..984H Haarsma, Debora... The Central Component of Gravitational Lens Q0957+561
54. 2008AJ....135..947S Schild, Rudolph... Direct Microlensing-Reverberation Observations of the Intrinsic Magnetic Structu...
55. 2008AJ....135..496I Inada, Naohisa;... The Sloan Digital Sky Survey Quasar Lens Search. II. Statistical Lens Sample fro...
56. 2008A&A...492..411G Goicoechea, L. ... Structure function of the UV variability of Q0957+561
57. 2008A&A...492..401S Shalyapin, V. N... New two-colour light curves of Q0957+561: time delays and the origin of intrinsi...
58. 2008A&A...478...95Y Yonehara, A.; H... Origin of chromatic features in multiple quasars. Variability, dust, or microlen...
59. 2007MNRAS.376..371J Jackson, N.; Ba... A survey of polarization in the JVAS/CLASS flat-spectrum radio source surveys - ...
60. 2007ApJ...669..821H Ho, Luis C. The CO Tully-Fisher Relation and Implications for the Host Galaxies of High-Reds...
61. 2007ApJ...667..645R Read, J. I.; Sa... Radial Density Profiles of Time-Delay Lensing Galaxies
62. 2007ApJ...660....1O Oguri, Masamune... Gravitational Lens Time Delays: A Statistical Assessment of Lens Model Dependenc...
63. 2007AJ....134.1245C Cohen, A. S.; L... The VLA Low-Frequency Sky Survey
64. 2007AJ....133..313A Anderson, Scott... A Large, Uniform Sample of X-Ray-emitting Active Galactic Nuclei from the ROSAT ...
65. 2007A&A...462..581H Hawkins, M. R. ... Timescale of variation and the size of the accretion disc in active galactic nuc...
66. 2006MNRAS.368..171Z Zhao, Hongsheng... Testing Bekenstein's relativistic Modified Newtonian Dynamics with lensing data
67. 2006ApJ...653..936S Saha, Prasenjit... Gravitational Lensing Model Degeneracies: Is Steepness All-Important?
68. 2006ApJ...650L..17S Saha, Prasenjit... The Hubble Time Inferred from 10 Time Delay Lenses
69. 2006ApJ...649..616P Peng, Chien Y.;... Probing the Coevolution of Supermassive Black Holes and Galaxies Using Gravitati...
70. 2006ApJ...641..683S Shields, G. A.;... The Black Hole-Bulge Relationship for QSOs at High Redshift
71. 2006ApJ...636L...5S Sazhin, M.; Cap... Further Spectroscopic Observations of the CSL 1 Object
72. 2006AJ....132..420S Schild, Rudolph... Observations Supporting the Existence of an Intrinsic Magnetic Moment inside the...
73. 2006A&A...460..647D Dobke, B. M.; K... A simple analysis of halo density profiles using gravitational lensing time dela...
74. 2006A&A...454..695C Cuevas-Tello, J... How accurate are the time delay estimates in gravitational lensing?
75. 2006A&A...450..461S Saha, P.; Courb... COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses. IV. Models of p...
76. 2005PASP..117..311T Trimble, Virgin... Astrophysics in 2004
77. 2005MNRAS.360L..60G Goicoechea, L. ... The dark halo of the main lens galaxy in QSO 0957 + 561
78. 2005MNRAS.359.1165G Greve, T. R.; B... An interferometric CO survey of luminous submillimetre galaxies
79. 2005MNRAS.357..135P Popovic, L. C.;... The influence of gravitational lensing on the spectra of lensed quasi-stellar ob...
80. 2005ApJ...624..463G Gott, J. Richar... A Map of the Universe
81. 2005ApJ...624..118M McGough, Christ... Measuring Extinction Curves of Lensing Galaxies
82. 2005ApJ...622..797K Kataoka, Jun; S... X-Ray Emission Properties of Large-Scale Jets, Hot Spots, and Lobes in Active Ga...
83. 2005ApJ...622..106O Oguri, Masamune... Discovery of Two Gravitationally Lensed Quasars with Image Separations of 3" fro...
84. 2005ApJ...619...19G Goicoechea, L. ... New VR Magnification Ratios of QSO 0957+561
85. 2005AJ....129.1225S Schild, Rudolph... Accretion Disk Structure and Orientation in the Lensed and Microlensed Q0957+561...
86. 2005A&A...431..879K Krips, M.; Neri... Q0957+561 revised: CO emission from a disk at z = 1.4
87. 2004MNRAS.352.1291P Peroux, Celine;... Classical and MgII-selected damped Lyman {alpha} absorbers: impact on {OMEGA}_HI...
88. 2004ApJ...616.1284M McGlynn, T. A.;... Automated Classification of ROSAT Sources Using Heterogeneous Multiwavelength So...
89. 2004ApJ...609...61H Hainline, Laura... A Study of CO Emission in High-Redshift QSOs Using the Owens Valley Millimeter A...
90. 2004ApJ...600L..23C Cheung, C. C. Radio Identification of the X-Ray Jet in the z=4.3 Quasar GB 1508+5714
91. 2004A&A...422..477S Schild, R.; Mas... Anomalous fluctuations in observations of Q0957+561 A,B: Smoking gun of a cosmic...
92. 2004A&A...420..881Z Zakharov, F.; P... On the contribution of microlensing to X-ray variability of high-redshifted QSOs
93. 2004A&A...414..425S Saha, P. Time-delay quasars: Scales and orders of magnitudes
94. 2003MNRAS.346.1103P Peroux, C.; McM... The evolution of {OMEGA}_HI_ and the epoch of formation of damped Lyman {alpha} ...
95. 2003MNRAS.346..415U Ullan, A.; Goic... GLITP optical monitoring of QSO 0957+561: VR light curves and variability
96. 2003MNRAS.345..795O Ovaldsen, J. E.... Five nights of intensive R- and V-band photometry of QSO 0957+561A,B
97. 2003MNRAS.344..924V van de Ven, G.;... The Fundamental Plane and the evolution of the M/L ratio of early-type field gal...
98. 2003MNRAS.343..639O Ofek, Eran O.; ... The redshift distribution of gravitational lenses revisited: constraints on gala...
99. 2003ApJ...594...97C Colley, Wesley ... A Rapid Microlensing Event in the Q0957+561A, B Gravitational Lens System
100. 2003ApJ...593..203C Churchill, Chri... The Spatial, Ionization, and Kinematic Conditions of the z=1.39 Damped Ly{alpha}...
101. 2003ApJ...588..711C Colley, W. N.; ... Rapid brightness fluctuations in Q0957+561A,B: microlensing or seeing
102. 2003ApJ...583...49K Kochanek, C. Gravitational Lens Time Delays in Cold Dark Matter
103. 2003AJ....126..689S Schild, Rudolph... Microlensing of a Ring Model for Quasar Structure
104. 2003AJ....126...24H Hutchings, J. B... Ultraviolet Structure in the Lensed QSO 0957+561
105. 2003A&A...412..707R Ryabinkov, A. I... A catalogue of absorption-line systems in QSO spectra
106. 2003A&A...407..899F Fan, J. H.; Zha... The core dominance parameter of extragalactic radio sources
107. 2003A&A...406..535Z Zickgraf, F.-J.... The Hamburg/RASS Catalogue of optical identifications. Northern high-galactic la...
108. 2003A&A...402..891O Ovaldsen, J. E.... New aperture photometry of QSO 0957+561; application to time delay and microlens...
109. 2002ApJS..140..143B Bechtold, J., D... A Uniform Analysis of the Ly{alpha} Forest at z = 0-5. III. Hubble Space Telesco...
110. 2002ApJ...578...25K Kochanek, C. What Do Gravitational Lens Time Delays Measure?
111. 2002ApJ...573L...1O Oscoz, A., Alca... A Large Brightness Enhancement of the QSO 0957+561 A Component
112. 2002ApJ...571..712B Barvainis, R., ... A Submillimeter Survey of Gravitationally Lensed Quasars
113. 2002ApJ...568..488O Oguri, M., Taru... Strong Gravitational Lensing Time Delay Statistics and the Density Profile of Da...
114. 2002ApJ...565..105C Colley, W., Sch... Around the Clock Observations of the Q0957+561A,B Gravitationally Lensed Quasar
115. 2002ApJ...565...96C Chartas, G., Gu... Constraining H_0_ from Chandra Observations of Q0957+561
116. 2002A&A...381..757L Liu, F., Zhang,... A new list of extra-galactic radio jets
117. 2001PASP..113..362C Condon, J., Yin... Offset Pointing Calibrators for Large Radio Telescopes
118. 2001MNRAS.328.1001P Phillips, P., B... The JVAS/CLASS search for 6-arcsec to 15-arcsec image separation lensing
119. 2001MNRAS.325.1527C Collier, S. Evidence for accretion disc reprocessing in QSO 0957+561
120. 2001MNRAS.322..397G Gil Merino, R.,... Short time-scale fluctuations in the difference light curves of QSO 0957+561A,B:...
121. 2001ApJ...554..496T Tsunemi, H., Mo... Improvement of the Spatial Resolution of the ACIS Using Split-Pixel Events
122. 2001ApJ...552...81O Oscoz, A., Alca... Time Delay in QSO 0957+561 From 1984-1999 Optical Data
123. 2001ApJ...550..153K Khare, P. Angular Separations of Lensed Quasar Images
124. 2001AJ....121...21B BURBIDGE, G., A... THE DISTRIBUTION OF REDSHIFTS IN NEW SAMPLES OF QUASI-STELLAR OBJECTS
125. 2001A&A...380..805B Burud, I., Maga... A novel approach for extracting time-delays from lightcurves of lensed quasar im...
126. 2000MNRAS.311..456M Mason, K. O., C... The ROSAT International X-ray/Optical Survey (RIXOS): source catalog
127. 2000ApJS..129..547B Bauer, F., Cond... RBSC-NVSS Sample. I. Radio and Optical Identifications of a Complete Sample of 1...
128. 2000ApJ...544...98W Witt, H., Mao, ... Analytic Time Delays and H_0_ Estimates for Gravitational Lenses
129. 2000ApJ...543..577C Churchhill, C. ... Low-and high-ionization absorption properties of MgII absorption-selected galaxi...
130. 2000ApJ...543..552S Storrie-Lombard... Surveys for z > 3 damped Ly{alpha} absorption systems: The evolution of natural ...
131. 2000ApJ...543..131K Kochanek, C. S.... The fundamental plane of gravitational lens galaxies and the evolution of early-...
132. 2000ApJ...531..635M Mediavilla, E.,... Spectroscopy of the Lens Galaxy of Q0957+561A,B: Implications of a Possible Cent...
133. 2000ApJ...531...81C Chartas, G. X-Ray Observations of Gravitationally Lensed Quasars: Evidence for a Hidden Quas...
134. 2000ApJ...529...77I Irwin, J., Widr... An Observational Test of Dark Matter as Cold Fractal Clouds
135. 2000AJ....119.2540G GRAZIAN, E., CR... The Asiago-ESO/RASS QSO survey. I. The catalog and the local QSO luminosity func...
136. 2000A&AS..147..169B Bicay, M., Step... Accurate optical positions for 2978 objects from the Second Byurakan Survey (SBS...
137. 2000A&A...363..141R Reich, W., Furs... Radio-loud active galaxies in the northern ROSAT All-Sky Survey. IV. Properties ...
138. 2000A&A...362L..37W Wambsganss, J.,... Microlensing results from APO monitoring of the double quasar Q0957+561A,B betwe...
139. 1999MNRAS.308..233M MITTAZ, J., CAR... X-ray spectra of the RIXOS source sample
140. 1999AstL...25..793Z Zhdanov, V. Autocorrelation function of microlensed radio emission
141. 1999ApJ...527..513K Koopmans, L., F... A Determination of H_0_ with the CLASS Gravitational Lens B1608+656. II. Mass Mo...
142. 1999ApJ...526...40S Serra Ricart, M... BVRI Photometry of QSO 0957+561A, B: Observations, New Reduction Method, and Tim...
143. 1999ApJ...524..582C CHAE, K. New Modeling of the Lensing Galaxy and Cluster of Q0957+561: Implications for th...
144. 1999ApJ...524..572P PENG, C., IMPEY... The Quasar Pair Q1634+267A,B and the Binary QSO versus Dark Lens Hypotheses
145. 1999ApJ...523..617F FALCO, E., IMPE... Dust and Extinction Curves in Galaxies with z>0: The Interstellar Medium of Grav...
146. 1999ApJ...520..479B BARKANA, R., LE... A Reassessment of the Data and Models of the Gravitational Lens Q0957+561
147. 1999ApJ...519L..31Y YONEHARA, A. Source Size Limitation from Variabilities of a Lensed Quasar
148. 1999ApJ...518..153C COLLEY, W., SCH... Precision Photometry for Q0957+561 Images A and B
149. 1999ApJ...516...18R ROMANOWSKY, A.,... Constraints on H_0 from the Central Velocity Dispersions of Lens Galaxies
150. 1999ApJ...515..512T TONRY, J., FRAN... Velocity Dispersion of the Gravitational Lens 0957+561
151. 1999ApJ...514..598S SCHILD, R. A Wavelet Exploration of the Q0957+561A,B Brightness Record
152. 1999ApJ...510..590K KOCHANEK, C., F... Why Quasar Pairs are Binary Quasars and Not Gravitational Lenses
153. 1999ApJ...510...64H HAARSMA, D., HE... The Radio Wavelength Time Delay of Gravitational Lens 0957+561
154. 1999ApJ...510...42C CHIBA, M., YOSH... New Limits on a Cosmological Constant from Statistics of Gravitational Lensing
155. 1999AJ....118...14B BERNSTEIN, G., ... Values of H_0 from Models of the Gravitational Lens 0957+561
156. 1998MNRAS.301..861W WU, X., CHIUEH,... A comparison of different cluster mass estimates: consistency or discrepancy?
157. 1998MNRAS.298..637P POOLEY, D., WAL... The 7C survey of radio sources at 151 MHz:three regions centred at RA10^h^05^m^,...
158. 1998ApJ...504..671K KAWAGUCHI, T., ... Optical Variability in Active Galactic Nuclei: Starbursts or Disk Instabilities?
159. 1998ApJ...504..661C CHARTAS, G., CH... X-Ray Detection of the Primary Lens Galaxy Cluster of the Gravitational Lens Sys...
160. 1998ApJ...493...54C CAGNONI, I., DE... A MEDIUM SURVEY OF THE HARD X-RAY SKY WITH THE ASCA GAS IMAGING SPECTROMETER: TH...
161. 1998ApJ...492...74G GOICOECHEA, L. ... THE INFLUENCE OF MICROLENSING ON TIME DELAY DETERMINATIONS IN DOUBLE-IMAGED QUAS...
162. 1998A&AS..127..145B Bade, N., Engel... The Hamburg/RASS Catalogue of optical identifications
163. 1998A&A...340..351P PIETSCH, W., TR... NGC 3079: X-ray emission from the nuclear super-bubble and halo
164. 1998A&A...336..829P PELT, J., SCHIL... Microlensing on different timescales in the lightcurves of QSO 0957+561 A,B
165. 1998A&A...335..379S SCHMIDT, R., WA... Limits on MACHOs from microlensing in the double quasar Q0957+561
166. 1997MNRAS.291..177P Puchnarewicz, E... Optical and X-ray properties of the RIXOS AGN - II. Emission lines
167. 1997MNRAS.289..933P Pijpers, F. P. The determination of time delays as an inverse problem - the case of the double ...
168. 1997ApJ...489..476P PARK, M.-G., AN... CURVATURE OF THE UNIVERSE AND OBSERVED GRAVITATIONAL LENS IMAGE SEPARATIONS VERS...
169. 1997ApJ...488L.121A AVRUCH, I. M., ... LOW SURFACE BRIGHTNESS RADIO STRUCTURES IN THE FIELD OF GRAVITATIONAL LENS 0957+...
170. 1997ApJ...486..117I ILER, A. L., SC... RADIO POLARIZATION IN EGRET BLAZARS
171. 1997ApJ...484...70F FALCO, E. E., S... AN ESTIMATE OF H_0_ FROM KECK SPECTROSCOPY OF THE GRAVITATIONAL LENS SYSTEM 0957...
172. 1997ApJ...483L..79B BERNSTEIN, G., ... IMPROVED PARAMETERS AND THE NEW LENSED FEATURES FOR Q0957+561 FROM WFPC2 IMAGING
173. 1997ApJ...483L..13G GOULD, A., AND ... SIGNATURES OF ACCRETION DISKS IN QUASAR MICROLENSING
174. 1997ApJ...482...75K KUNDIC, T., TUR... A ROBUST DETERMINATION OF THE TIME DELAY IN 0957+561A,B AND A MEASUREMENT OF THE...
175. 1997ApJ...479L..89O OSCOZ, A., MEDI... TIME DELAY OF QSO 0957+561 AND COSMOLOGICAL IMPLICATIONS
176. 1997ApJ...479..102H HAARSMA, D. B.,... THE 6 CENTIMETER LIGHT CURVES OF B0957+561, 1970-1994: NEW FEATURES AND IMPLICAT...
177. 1997ApJ...477..568Z ZUO, L., BEAVER... THE DUST-TO-GAS RATIO IN THE DAMPED Ly{alpha} CLOUDS TOWARD THE GRAVITATIONALLY ...
178. 1997ApJ...474..598M MICHALITSIANOS,... Ly{alpha} ABSORPTION-LINE SYSTEMS IN THE GRAVITATIONAL LENS Q0957+561
179. 1997AJ....114.2240H HARVANEK, M., S... HIGH DYNAMIC RANGE VLA OBSERVATIONS OF THE GRAVITATIONALLY LENSED QUASAR 0957+56...
180. 1997AJ....113..521F FISCHER, P., BE... THE MASS DISTRIBUTION OF THE CLUSTER 0957+561 FROM GRAVITATIONAL LENSING
181. 1997AJ....113..130S SCHILD, R., THO... THE Q0957+561 TIME DELAY FROM OPTICAL DATA
182. 1997A&AS..122..235L Laurent-Muehlei... Radio-loud active galaxies in the northern ROSAT All-Sky Survey
183. 1997A&A...328L..25H Hawkins, M. R. ... Dark galaxies-the dominant population
184. 1997A&A...325..877R Refsdal, S., an... Gravitational microlensing of large sources including shear term effects
185. 1996ApJS..105..369M MURPHY, E. M., ... GALACTIC H I COLUMN DENSITIES TOWARD QUASARS AND ACTIVE GALACTIC NUCLEI
186. 1996ApJ...473..570G GROGIN, N. A., ... ERRATUM: A NEW MODEL OF THE GRAVITATIONAL LENS 0957+561 AND A LIMIT ON THE HUBBL...
187. 1996ApJ...470L..19O OSCOZ, A., SERR... OFFICIAL PHOTOMETRY OF QUASAR 0957+561A,B
188. 1996ApJ...464...92G GROGIN, N. A., ... A NEW MODEL OF THE GRAVITATIONAL LENS 0957+561 AND A LIMIT ON THE HUBBLE CONSTAN...
189. 1996AJ....111.1945D DOUGLAS, J. N.,... THE TEXAS SURVEY OF RADIO SOURCES COVERING -35.5^deg^ <{delta} < 71.5^deg^ AT 36...
190. 1996A&A...305...97P Pelt, J., Kayse... The light curve and the time delay of QSO 0957+561
191. 1995MNRAS.274..447H Hales, S. E. G.... A revised machine-readable source list for the Rees 38-MHz survey
192. 1995ApJ...453..545K KOCHANEK, C. S.... GRAVITATIONAL LENSING LIMITS ON COLD DARK MATTER AND ITS VARIANTS
193. 1995ApJ...449..488R RAO, S. M., TUR... THE INCIDENCE OF DAMPED Ly{alpha} SYSTEMS IN THE REDSHIFT INTERVAL 0 < z < 4
194. 1995ApJ...445..140C CHARTAS, G., FA... ROSAT OBSERVATIONS OF THE GRAVITATIONALLY LENSED SYSTEM 0957+561
195. 1995ApJ...442...87D DOLAN, J. F., M... THE GRAVITATIONAL LENS SYSTEM Q0957+561 IN THE ULTRAVIOLET
196. 1995ApJ...440..435L LANZETTA, K. M.... THE IUE SURVEY FOR DAMPED LYMAN-{alpha} AND LYMAN-LIMIT ABSORPTION SYSTEMS: EVOL...
197. 1995AJ....109.1970S SCHILD, R., THO... TWIN QSO Q0957+561 TIME DELAY DATASET
198. 1995A&AS..110..213R Reid, A., Shone... High resolution radio maps of quasars from the Jodrell Bank 966 MHz survey
199. 1995A&AS..109..147B Brinkmann, W., ... The ROSAT AGN content of the 87GB 5 GHz survey: bulk properties of previously op...
200. 1995A&A...304..341B Beskin, G. M., ... The optical time delay in the double quasar Q0957+561 A,B
201. 1994MNRAS.268..690K Koen, C. Finding the lag between two irregularly observed random walk series
202. 1994ApJ...435L..79D DAHLE, H., MADD... DEEP IMAGING OF THE DOUBLE QUASAR QSO 0957+561: NEW CONSTRAINTS ON H_0_
203. 1994ApJ...434...54T THOMPSON, JR., ... A STATISTICAL ANALYSIS OF THE BROADBAND 0.1 TO 3.5 keV SPECTRAL PROPERTIES OF X-...
204. 1994ApJ...426..486C CAMPBELL, R. M.... TOWARD ESTIMATION OF H_0_ FROM VLBI OBSERVATIONS OF THE GRAVITATIONAL LENS SYSTE...
205. 1994A&A...291..411A Angonin-Willaim... Gravitational lensing of Q 0957+561: a study of the cluster at z = 0.355
206. 1994A&A...291...74P Paltani, S., an... Systematic study of the ultraviolet variability of active galactic nuclei
207. 1994A&A...286..775P Pelt, J., Hoff,... Time delay controversy on QSO 0957+561 not yet decided
208. 1993IrAJ...21..111M McBREEN B., PLU... Gamma-ray bursts, gravitational lensing and cosmology
209. 1993ApJS...87..451H HEWITT, A., AND... A REVISED AND UPDATED CATALOG OF QUASI-STELLAR OBJECTS
210. 1993ApJS...84..109L LANZETTA, K. M.... ULTRAVIOLET SPECTRA OF QSOs, BL LACERTAE OBJECTS AND SEYFERT GALAXIES
211. 1993ApJ...419...12K KOCHANEK, C. S.... THE ANALYSIS OF GRAVITATIONAL LENS SURVEYS. II. MAXIMUM LIKELIHOOD MODELS AND SI...
212. 1993ApJ...417L..57M MICHALITSIANOS,... DETECTION OF FAR-ULTRAVIOLET HIGH-EXCITATION LINE EMISSION AND LYMAN-{beta} ABSO...
213. 1993ApJ...417..438K KOCHANEK, C. S.... THE ANALYSIS OF GRAVITATIONAL LENS SURVEYS. I. SELECTION FUNCTIONS AND AMBIGUOIS...
214. 1993ApJ...410...21J JONES, C., STER... DISCOVERY OF A NEW COMPONENT IN THE GRAVITATIONALLY LENSED QUASAR 0957+561
215. 1993ApJ...407...60T TURNSHEK, D. A.... DAMPED LYMAN-ALPHA ABSORPTION IN Q0957+561A, B
216. 1993AJ....106..848D DRINKWATER, M. ... ON THE NATURE OF Mg II ABSORPTION LINE SYSTEMS IN QUASARS
217. 1992S&T....83....5B BUNGE R. First twin-quasar sightings
218. 1992NewSc1835...15C CROSWELL K. Black holes could drive quasar round the bend
219. 1992NewSc1807...23G GRIFFIN J. Quasar redshifts under the lens
220. 1992MNRAS.259p..31M Miralda-Escude,... Optical rings: a large number of gravitational lenses?
221. 1992MNRAS.256..589P Puchnarewicz, E... Optical properties of active galaxies with ultra-soft X-ray spectra
222. 1992MNRAS.254p..27G Garrett, M. A.,... Redshift measurements of the brightest cluster galaxies of the gravitational len...
223. 1992ApJS...81..661C CORDOVA, F. A.,... ACTIVE GALACTIC NUCLEI WITH ULTRASOFT X-RAY EMISSION
224. 1992ApJS...79..331W WHITE, R. L., A... A NEW CATALOG OF 30,239 1.4 GHz SOURCES
225. 1992ApJ...400..435K KORATKAR, A. P.... SEARCH FOR PARTIAL SYSTEMIC LYMAN EDGES IN NEARBY QUASARS
226. 1992ApJ...397L...1W WAMBSGANSS, J.,... A DIRECT GRAVITATIONAL LENSING TEST FOR 10^6^ M_sun_ BLACK HOLES IN HALOS OG GAL...
227. 1992ApJ...393....3F FUKUGITA, M., F... STATISTICAL PROPERTIES OF GRAVITATIONAL LENSES WITH A NONZERO COSMOLOGICAL CONST...
228. 1992ApJ...388...33K KASSIOLA, A., A... MULTIPLE QUASARS WITH LARGE MAGNITUDE DIFFERENCES: EXTREME MAGNIFICATION BY GRAV...
229. 1992ApJ...387L..61C CONNER, S. R., ... RECONCILING THE IMAGE BRIGHTNESS RATIOS IN THE GRAVITATIONAL LENS SYSTEM 0957+56...
230. 1992ApJ...385..416P PRESS, W. H., R... THE TIME DELAY OF GRAVITATIONAL LENS 0957+561. II. ANALYSIS OF RADIO DATA AND CO...
231. 1992ApJ...385..404P PRESS, W. H., A... THE TIME DELAY OF GRAVITATIONAL LENS 0957+561. I. METHODOLOGY AND ANALYSIS OF OP...
232. 1992ApJ...384..453L LEHAR, J., HEWI... THE RADIO TIME DELAY IN THE DOUBLE QUASAR 0957+561
233. 1992A&AS...95..249L Liu, F. K., and... A finding list of extragalactic radio jets and statistical results
234. 1992A&A...255L..20H Hjorth, P. G., ... Wavelet analysis of "double quasar" flux data
235. 1991S&W....30..422S STICKEL M. Gravitationslinse kontra Quasarpaar
236. 1991S&T....81..375S SCHILD R.E. Gravity is my telescope
237. 1991RevPD.191...15D DUMONT M. Astronomie - actualite
238. 1991PASP..103..694K KINNEY, A. L., ... WEIGHTED SLIT EXTRACTION OF LOW-DISPERSION IUE SPECTRAL DATA
239. 1991NewSc1761...22C CROSWELL K. 'Microlens' could reveal distant black holes
240. 1991Nat...353..708D DAR A. Quasar redshifts
241. 1991Nat...350..211R RHEE G. An estimate of the Hubble constant from the gravitational lensing of quasar 0957...
242. 1991MNRAS.251..698F Falco, E. E., W... The role of microlensing in estimates of the relative time delay for the gravita...
243. 1991MNRAS.248...58W Watson, A. M., ... QSO absorption lines and rotation measures
244. 1991Mgr....63...59H HAMMER F. and L... New NTT discoveries on distant galaxies and gravitational lensing
245. 1991BAAS...23..938H HEWITT J.N. Gravitational lenses : observational status and applications
246. 1991AZh....68..236M MANDZHOS A.V. Mutual coherence properties of images of a quasar observed through a gravitation...
247. 1991AZh....68...22M MANDZHOS A.V. Mutual coherence properties of images of a quasar observed through a gravitation...
248. 1991ApJS...75.1011G GREGORY, P. C.,... THE 87GB CATALOG OF RADIO SOURCES COVERING 0^deg^ < {delta} < +75^deg^ AT 4.85 G...
249. 1991ApJS...75..645K KINNEY, A. L., ... AN ULTRAVIOLET ATLAS OF QUASAR AND BLAZAR SPECTRA
250. 1991ApJS...75....1B BECKER, R. L., ... A NEW CATALOG OF 53,522 4.85 GHz SOURCES
251. 1991ApJ...382L...1D DAR, A. ARE QUASAR REDSHIFTS COSMOLOGICAL?
252. 1991ApJ...379...19W WEST, M. J. SUPERCLUSTERING AT HIGH REDSHIFTS
253. 1991ApJ...372..364F Falco, E. E., G... New model for the 0957-561 gravitational lens system: bounds on masses of a poss...
254. 1991ApJ...371..111I IRWIN, J. A., a... THE NEUTRAL HYDROGEN DISTRIBUTION OF NGC 3079
255. 1991AJ....101..813S Schild, R. E., ... MICROLENSING IN THE Q0957+561 GRAVITATIONAL MIRAGE
256. 1990SoSAO..64..108V VERHOGLYADOVA O... On mutual coherence of the images formed by gravitational lenses
257. 1990SoSAO..64..104S SHVARTSMAN V.F.... Electrophotometry of double quasar Q 0957+56A,B
258. 1990QJRAS..31..305B BLANDFORD R.D. Gravitational lenses
259. 1990MNRAS.246..256H Hales, S. E. G.... The 6C survey of radio sources - III. The zone 48^deg^ < {delta} < 68^deg^, 05^h...
260. 1990JRASC..84..199R RUSK R. Optical polarization properties of compact radio sources
261. 1990C&E...244...58L LE FEVRE O. Les mirages de l'espace-temps
262. 1990BCFHT..22...14A ANGONIN M.C., V... Spectrographie bidimensionnelle de 2 mirages gravitationnels avec SILFID
263. 1990BCFHT..22....1R ROUAN D., LACOM... CIRCUS : bilan de deux annees et perspective. Les programmes scientifiques et le...
264. 1990BAAS...22.1263L LEHAR J., HEWIT... VLA determination of the time delay in 0957+561
265. 1990BAAS...22.1195F FORMAN W., JONE... Einstein X-ray observations of the lensed quasar 0957+561
266. 1990AJ....100.1771S SCHILD, R. E. THE TIME DELAY IN THE TWIN QSO Q0957 + 561
267. 1990AcASn..31..132Z ZHU XING-FEN an... The redshift periodicity distribution of the multi-quasars associated with low r...
268. 1990A&A...239...33A Arp, H., Bi, H.... Periodicity in quasar redshifts
269. 1990A&A...232...16G Gallais, P., Ro... Direct 2.2 micron image of the gravitationally lensed quasar Q 0957+561
270. 1989Sci...245..824B BLANDFORD R.D. Gravitational lens optics
271. 1989PisAZ..15..654M MINAKOV A.A. Optical ray deflection in the gravitation field of a massive disk
272. 1989PhRvL..63.2017A ALLEN B. Gravitational lenses as long-base-line gravitational-wave detectors
273. 1989NewSc.123...51R REFSDAL S., STA... Stars that magnify quasars
274. 1989BAAS...21..797B BARNOTHY J.M., ... A topological lens effect : microwave background radiation
275. 1989ApJS...69....1H HEWITT, A., and... THE FIRST ADDITION TO THE NEW OPTICAL CATALOG OF QUASI-STELLAR OBJECTS
276. 1989ApJ...340...90C CAULET, A. THE EVOLUTION OF LOW-IONIZATION QSO ABSORPTION SYSTEMS
277. 1989ApJ...338...44N NARASIMHA, D., ... A DOPPLER INTERPRETATION FOR CLOSE PAIRS AND COMPACT GROUPS OF QUASARS
278. 1989AJ.....97.1283L LANGSTON, G. I.... MG 1654+1346: AN EINSTEIN RING IMAGE OF A QUASAR RADIO LOBE
279. 1989Afz....30..399K KOMBERG B.V. Binary quasars are true pairs ?
280. 1989A&A...226...45H Hammer, F., and... Giant luminous arcs from lensing: determination of the mass distribution inside ...
281. 1989A&A...215..211L Lacombe, F., Ti... Imagery with infrared arrays I. Ground-based system and astronomical performance
282. 1989A&A...215...14C Chu, Y., and Zh... No quasar clustering at z > 2
283. 1989A&A...215....1V Vanderriest, C.... The value of the time delay {DELTA}T(A, B) for the "double" quasar 0957+561 from...
284. 1988Mer....171..12W WEEDMAN D. Quasars : a progress report
285. 1988IUES....1..257A ALTNER B., HEAP... Analysis of spatially resolved IUE spectra of 0957+561A,B : a gravitationally le...
286. 1988IUES....1..253B BURKE B.F., DUP... Gravitational lensing
287. 1988IAUS..129..207F FALCO E.E., GOR... Can we measure Ho with VLBI observations of gravitational images ?
288. 1988IAUS..129..201G GORENSTEIN M.V.... VLBI observations of the 0957+561 gravitational lens system
289. 1988BAAS...20.1001L LANGSTON G.I., ... MG 1654+1346 : Einstein ring of a radio lobe ?
290. 1988Ast....16...60V VERSCHUUR G.L. A new 'yardstick' for the universe
291. 1988ApJ...334...42G GORENSTEIN, M. ... VLBI OBSERVATIONS OF THE GRAVITATIONAL LENS SYSTEM 0957+561: STRUCTURE AND RELAT...
292. 1988AJ.....96.1215P PICA, A. J., SM... LONG-TERM OPTICAL BEHAVIOR OF 144 COMPACT EXTRAGALACTIC OBJECTS: 1969-1988
293. 1988A&A...205....1C Chu, Y., and Zh... The dependence of quasar clustering on the type of the quasar
294. 1988A&A...198...49S Surdej, J., Mag... Observations of the new gravitational lens system UM 673=Q 0142-100
295. 1987Rech..192.1182B BLANCHARD A., H... Les mirages gravitationnels
296. 1987PBeiO..10...46Z ZHOU YUAN The lens effect of gravitation dyon black hole
297. 1987MitAG..70..210K KAYSER R. Mikro-Gravitationslinsen - ein neues Werzeug der extragalaktischen Astronomie
298. 1987ApJS...64..667T TYTLER D., BOKS... High-resolution spectra of 24 low-redshift QSOs: the properties of Mg II absorpt...
299. 1987ApJ...322..739L LANZETTA K.M., ... An absorption-line survey of 32 QSOs at red wavelengths : properties of the Mg I...
300. 1987ApJ...321...49T TYTLER D. The distribution of QSO absorption system column densities : evidence for a sing...
301. 1987ApJ...320L..75M MOLLER P., JAKO... z(abs)=z(em) absorption systems in quasar spectra : a correlation with radio and...
302. 1987ApJ...315L..83D DEKEL A., PIRAN... Gravitational lenses and decay of dark matter
303. 1987ApJ...313...13S SUBRAMANIAN K.,... The intensity ratio in different wave bands between images of gravitationally le...
304. 1986S&W....25..252K KAYSER R. Mikro-gravitationslinsen und ihre Bedeutung fur die Astrophysik
305. 1986Rech...1711576K KUNTH D. Une lentille gravitationnelle invisible
306. 1986MNRAS.222..787M MONK A.S., PENS... A search for QSOs in the fields of nearby galaxies - II. NGC 55,253,300 and 5364...
307. 1986IUE8E.R....715G GONDHALEKAR P.M... Ultraviolet light curve of the double quasar Q 0957+561, A, B and a determinatio...
308. 1986IUE8E.R....523U ULRICH M.H. Observations of active galactic nuclei with IUE and comparison with X-ray data
309. 1986Aste..100....3V VANDERRIST C. Les mirages gravitationnels : un outil de choix pour sonder l'univers
310. 1986ApL....25...99Z ZHENG W., HUBBA... An edge-on galaxy model for Q 0957+561
311. 1986ApJ...308..815N NEUGEBAUER G., ... Quasars measured by the INFRARED ASTRONOMICAL SATELLITE
312. 1986ApJ...300..209S SCHILD R.E., CH... CCD camera brightness monitoring of Q 0957+561 A,B
313. 1986Ap&SS.119..227F FUJISHITA M. Motion of quasar images by gravitational lens galaxies
314. 1986A&A...169....1B BERGERON J., ST... Absorption line systems in QSO spectra : properties derived from observations an...
315. 1986A&A...166L...5M METCALFE L., MC... Consequences of gravitational lensing for gamma radiation from 3C 273
316. 1985Nat...314..402G GASKELL C.M. Direct estimate of Hubble's constant from the double quasar
317. 1985MNRAS.215..639Z ZUIDERWIJK E.J.... The gravitational lens effect and the surface density of quasars near foreground...
318. 1985ApJ...298..732C CROTTS A.P.S. Two-point correlation function of QSO metal absorption systems from an inhomogen...
319. 1985ApJ...293..356R ROBERTS D.H., G... The multiple images of the quasar 0957+56.1
320. 1985ApJ...289L...1F FALCO E.E., GOR... On model-dependent bounds on H 0 from gravitational images : application to 0957...
321. 1985ApJ...289...18M MERRITT D. Relaxation and tidal stripping in rich clusters of galaxies. III. Growth of a ma...
322. 1985AJ.....90...30R RUSK R., SEAQUI... Alignment of radio and optical polarization with VLBI structure
323. 1984MNRAS.210...79N NARASIMHA D., S... Gravitational lens model of the double QSO 0957+561 A, B incorporating VLBI feat...
324. 1984BAAS...162.519H HEWITT J.N., BU... Radio flux monitoring of 0957+561 A and B
325. 1984ARA&A..22..319B Bridle, Alan H.... Extragalactic Radio Jets
326. 1984ApJ...287..538G GORENSTEIN M.V.... The milli-arcsecond images of Q0957+56.1
327. 1984ApJ...284....1T TURNER E.L., OS... The statistics of gravitational lenses : the distributions of image angular sepa...
328. 1984A&A...141..318B BORGEEST U., RE... The Hubble parameter : an upper limit from QSO 0957+561A, B
329. 1984A&A...139..289C CHITRE S.M., NA... 3C 273 : a gravitationally lensed quasar ?
330. 1984A&A...138L..19F FLORENTIN-NIELS... Determination of difference in light travel time for QSO 0957+561 A,B
331. 1983MSAIt..54..665S SHAVER P.A., RO... Absorption-line studies of QSO pairs
332. 1982ApJ...255...20K Keel, W. C. The nature of light variations in the Double Quasar Q0957+561
333. 1981LickO.824....1M MILLER J.S., AN... Variability of the double quasar 0957+561A,B
334. 1981ApJ...249..415Y YOUNG P., SARGE... The origin of a new absorption system discovered in both components of the doubl...
335. 1981ApJ...244..756Y YOUNG P. Q0957+561 : effects of random stars on the gravitational lens
336. 1981ApJ...243L..57H HASCHICK A.D., ... VLBI obvservations of the double quasar 0957+561
337. 1980Natur.288...69N NOBLE, R., WALS... MTRLI observations of the double QSO at 408 MHz
338. 1980Natur.286..865G GREENFIELD, P.,... The double quasar 0957+561 as a gravitational lens - Further VLA observations
339. 1980IUE2E.R....295G GONDHALEKAR P.M... IUE observations of the twin QSOs 0957+561 A, B
340. 1980ApJ...238....1W WILLS B.J., WIL... Spectrophotometry of the double QSO 0957+561
341. 1979Nat...279..381W WALSH, D., CARS... Q0957+561 A, B: twin quasistellar objects or gravitational lens?

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