NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-22 T04:12:20 PDT
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Reference(s) for object MRK 0421

1235 reference(s) found in NED.


1. 2019ApJ...870...28F Finke, Justin D... The Properties of Parsec-scale Blazar Jets
2. 2018RAA....18..120L Lin, Chao; Fan,... Spectral energy distributions for TeV blazars
3. 2018PASJ...70....5Q Qin, Longhua; W... Using the Markov chain Monte Carlo method to study the physical properties of Ge...
4. 2018MNRAS.480L.116S Sinha, Atreyee;... The flux distribution of individual blazars as a key to understand the dynamics ...
5. 2018MNRAS.480.4873A Aggrawal, Vishi... X-ray intraday variability of the TeV blazar Mrk 421 with Chandra
6. 2018MNRAS.480.2046G Goswami, Pranju... Influence of energy-dependent particle diffusion on the X-ray spectral curvature...
7. 2018MNRAS.480.1999G Gallant, D.; Ga... X-ray spectral variability of blazars using principal component analysis
8. 2018Galax...6...49L Liu, Jun; Bigna... Effelsberg Monitoring of a Sample of RadioAstron Blazars: Analysis of Intra-Day ...
9. 2018ATel11216....1T Turner, C. S.; ... Extended Optical Flaring of the Blazars 3C 279 and Mark 421
10. 2018ATel11199....1R Rannot, R. C. TACTIC detection of a strong TeV flare from Mrk 421
11. 2018ATel11195....1K Kadler, Matthia... Swift/BAT finds hard X-Ray flaring activity correlated with an ongoing TeV flare...
12. 2018ATel11194....1G Garcia-Gonzalez... HAWC observation of Mrk421 reaching peak TeV flux in month-long enhanced activit...
13. 2018ATel11186....1T Tachibana, Y.; ... MAXI/GSC detection of a rapid X-ray brightening from Mrk 421
14. 2018ATel11184....1B Biland, Adrian;... Exceptional Flare of Mrk 421 at TeV energies
15. 2018ApJS..237...32A Ackermann, M.; ... The Search for Spatial Extension in High-latitude Sources Detected by the Fermi ...
16. 2018ApJS..237...30M Meng, Nankun; Z... Multi-color Optical Monitoring of 10 Blazars from 2005 to 2011
17. 2018ApJS..237...11K Keeney, Brian A... A Galaxy Redshift Survey Near HST/COS AGN Sight Lines
18. 2018ApJ...868...87B Broderick, Aver... Missing Gamma-Ray Halos and the Need for New Physics in the Gamma-Ray Sky
19. 2018ApJ...864..164Y Yan, Dahai; Yan... Statistical Analysis on XMM-Newton X-Ray Flares of Mrk 421: Distributions of Pea...
20. 2018ApJ...861...31A Asano, Katsuaki... Blazar Spectra with Hard-sphere-like Acceleration of Electrons
21. 2018ApJ...859L..21C Chatterjee, Rit... Possible Accretion Disk Origin of the Emission Variability of a Blazar Jet
22. 2018ApJ...858...68K Kapanadze, B.; ... Swift Observations of Mrk 421 in Selected Epochs. II. An Extreme Spectral Flux V...
23. 2018ApJ...854...66K Kapanadze, B.; ... Swift Observations of Mrk 421 in Selected Epochs. I. The Spectral and Flux Varia...
24. 2018ApJ...853...68P Piner, B. Glenn... Multi-epoch VLBA Imaging of 20 New TeV Blazars: Apparent Jet Speeds
25. 2018ApJ...853...34Z Zhu, S. F.; Xue... Extremely Rapid X-Ray Flares of TeV Blazars in the RXTE Era
26. 2018A&A...620A.185N Nilsson, K.; Li... Long-term optical monitoring of TeV emitting blazars. I. Data analysis
27. 2017NewA...54...24S Singh, K. K.; S... A time dependent approach to model X-ray and gamma-ray light curves of Mrk 421 o...
28. 2017NatAs...1E.194P Padovani, Paolo... On the two main classes of active galactic nuclei
29. 2017MNRAS.472.3789C Carnerero, M. I... Dissecting the long-term emission behaviour of the BL Lac object Mrk 421
30. 2017MNRAS.469.1612L Lico, R.; Gomez... Interpreting the time variable RM observed in the core region of the TeV blazar ...
31. 2017MNRAS.468.4902P Paiano, S.; Fra... A new method to unveil blazars among multiwavelength counterparts of unassociate...
32. 2017MNRAS.468..597R Resconi, E.; Co... Connecting blazars with ultrahigh-energy cosmic rays and astrophysical neutrinos
33. 2017MNRAS.465.4690M McLaughlin, B. ... K-shell photoionization of O^4 +^ and O^5 +^ ions: experiment and theory
34. 2017MNRAS.465.3767Z Zacharias, Mich... Attenuation of TeV gamma-rays by the starlight photon field of the host galaxy
35. 2017MNRAS.465..180L Liodakis, I.; P... Detecting the elusive blazar counter-jets
36. 2017MNRAS.464..599D Ding, N.; Zhang... The physical properties of Fermi TeV BL Lac objects' jets
37. 2017ATel11086....1B Biland, Adrian;... Mrk 421 exceptionally bright at TeV energies
38. 2017ATel11077....1B Biland, Adrian;... Mrk 421 showing enhanced activity at TeV energies with two short bright outburst...
39. 2017ATel.9946....1M Martinez, I.; W... HAWC detection of further increase in TeV gamma-ray flux from Mrk 421
40. 2017ATel.9936....1W Wood, J.; Marti... Increased TeV gamma-ray activity from Mrk 421 on January 1-4
41. 2017ApJS..233...17R Ricci, C.; Trak... BAT AGN Spectroscopic Survey. V. X-Ray Properties of the Swift/BAT 70-month AGN ...
42. 2017ApJS..233....3T Truebenbach, Al... The VLBA Extragalactic Proper Motion Catalog and a Measurement of the Secular Ab...
43. 2017ApJS..232...18A Ajello, M.; Atw... 3FHL: The Third Catalog of Hard Fermi-LAT Sources
44. 2017ApJS..232....7F Fraija, N.; Ben... Long-term Optical Polarization Variability and Multiwavelength Analysis of Blaza...
45. 2017ApJ...851L...7M Mathur, S.; Nic... The O VI Mystery: Mismatch between X-Ray and UV Column Densities
46. 2017ApJ...850..157T Tiede, Paul; Br... Bow Ties in the Sky. II. Searching for Gamma-Ray Halos in the Fermi Sky Using An...
47. 2017ApJ...849..138K Kushwaha, Panka... Gamma-Ray Flux Distribution and Nonlinear Behavior of Four LAT Bright AGNs
48. 2017ApJ...848..103K Kapanadze, B.; ... Mrk 421 after the Giant X-Ray Outburst in 2013
49. 2017ApJ...846..136A Aartsen, M. G.;... Search for Astrophysical Sources of Neutrinos Using Cascade Events in IceCube
50. 2017ApJ...843..116A Abeysekara, A. ... The HAWC Real-time Flare Monitor for Rapid Detection of Transient Events
51. 2017ApJ...842..129C Chen, Liang On the Origin of the Hard X-Ray Excess of High-Synchrotron-Peaked BL Lac Object ...
52. 2017ApJ...841..123P Pandey, Ashwani... X-Ray Intraday Variability of Five TeV Blazars with NuSTAR
53. 2017ApJ...841..100A Abeysekara, A. ... Daily Monitoring of TeV Gamma-Ray Emission from Mrk 421, Mrk 501, and the Crab N...
54. 2017ApJ...836..220C Cavaliere, A.; ... Blazar Jets Perturbed by Magneto-gravitational Stresses in Supermassive Binaries
55. 2017ApJ...835..288A Archambault, S.... Search for Magnetically Broadened Cascade Emission from Blazars with VERITAS
56. 2017ApJ...835..151A Aartsen, M. G.;... All-sky Search for Time-integrated Neutrino Emission from Astrophysical Sources ...
57. 2017ApJ...834..171R Roy, Nirupam; F... C II Radiative Cooling of the Galatic Diffuse Interstellar Medium: Insight into ...
58. 2017ApJ...834..157P Park, Jongho; T... The Long-term Centimeter Variability of Active Galactic Nuclei: A New Relation b...
59. 2017ApJ...834...65A Algaba, J. C.; ... Resolving the Geometry of the Innermost Relativistic Jets in Active Galactic Nuc...
60. 2017ApJ...834....2A Abeysekara, A. ... A Search for Spectral Hysteresis and Energy-dependent Time Lags from X-Ray and T...
61. 2017A&A...607A.121B Bernardini, M. ... Limits on quantum gravity effects from Swift short gamma-ray bursts
62. 2017A&A...606A..68C Cerruti, M.; Be... Luminous and high-frequency peaked blazars: the origin of the gamma-ray emission...
63. 2017A&A...606A..59H H. E. S. S. Col... Measurement of the EBL spectral energy distribution using the VHE gamma-ray spec...
64. 2017A&A...603A..34F Franceschini, A... The extragalactic background light revisited and the cosmic photon-photon opacit...
65. 2017A&A...602A..25Z Zech, A.; Cerru... Expected signatures from hadronic emission processes in the TeV spectra of BL La...
66. 2017A&A...600A.132S Sandrinelli, A.... Gamma-ray and optical oscillations of 0716+714, MRK 421, and BL Lacertae
67. 2017A&A...598A..36R Righi, C.; Tave... High-energy emitting BL Lacs and high-energy neutrinos. Prospects for the direct...
68. 2016yCat.1337....0G Gaia Collaborat... VizieR Online Data Catalog: Gaia DR1 (Gaia Collaboration, 2016)
69. 2016PASP..128g4101L Li, H. Z.; Jian... Multiband Variability Analysis of Mrk 421
70. 2016PASJ...68R...1H Hirashita, Hiro... First-generation science cases for ground-based terahertz telescopes
71. 2016NewA...46....9D Du, L. M.; Xie,... The disk-jet connection of Fermi 2LAC blazars
72. 2016MNRAS.463.4481Z Zhu, Qianqian; ... Testing one-zone synchrotron-self-Compton models with spectral energy distributi...
73. 2016MNRAS.458.3260C Chen, Xuhui; Po... Particle diffusion and localized acceleration in inhomogeneous AGN jets - II. St...
74. 2016MNRAS.458...56W Wierzcholska, A... X-ray spectral studies of TeV gamma-ray emitting blazars
75. 2016MNRAS.457.3582P Padovani, P.; R... Extreme blazars as counterparts of IceCube astrophysical neutrinos
76. 2016MNRAS.457.2433P Prokhorov, D. A... A search for pair haloes around active galactic nuclei through a temporal analys...
77. 2016MNRAS.457..676N Nicastro, F.; S... X-ray detection of warm ionized matter in the Galactic halo
78. 2016MNRAS.456.2374T Tavecchio, F.; ... On the magnetization of BL Lac jets
79. 2016MNRAS.455.4000A Aditya, J. N. H... A Giant Metrewave Radio Telescope search for associated H I 21 cm absorption in ...
80. 2016MNRAS.455.1796H Hernan-Caballer... The infrared database of extragalactic observables from Spitzer - I. The redshif...
81. 2016ATel.9137....1B Biland, A.; Dor... Enhanced and increasing activity in gamma rays and X-rays from the HBL Mrk421
82. 2016ApJS..227....8L Lee, Sang-Sung;... Interferometric Monitoring of Gamma-Ray Bright AGNs. I. The Results of Single-ep...
83. 2016ApJS..226...20F Fan, J. H.; Yan... The Spectral Energy Distributions of Fermi Blazars
84. 2016ApJS..224...26M Mao, Peiyuan; U... A Comprehensive Statistical Description of Radio-through-Gamma-Ray Spectral Ener...
85. 2016ApJS..223...15B Bird, A. J.; Ba... The IBIS Soft Gamma-Ray Sky after 1000 Integral Orbits
86. 2016ApJS..222....6B Bartoli, B.; Be... 4.5 Years of Multi-wavelength Observations of MRK 421 During the ARGO-YBJ and FE...
87. 2016ApJS..222....5A Ackermann, M.; ... 2FHL: The Second Catalog of Hard Fermi-LAT Sources
88. 2016ApJ...833..117T Turley, C. F.; ... Search for Blazar Flux-correlated TeV Neutrinos in IceCube 40-string Data
89. 2016ApJ...833...77I Itoh, Ryosuke; ... Systematic Study of Gamma-ray-bright Blazars with Optical Polarization and Gamma...
90. 2016ApJ...832...76D Danforth, Charl... Far-UV Emission Properties of FR1 Radio Galaxies
91. 2016ApJ...831..102K Kapanadze, B.; ... X-Ray Flaring Activity of MRK 421 in the First Half of 2013
92. 2016ApJ...828...13I Inoue, Yoshiyuk... Baryon Loading Efficiency and Particle Acceleration Efficiency of Relativistic J...
93. 2016ApJ...827...55K Kataoka, Jun; S... Inverse Compton X-Ray Emission from TeV Blazar Mrk 421 During a Historical Low-f...
94. 2016ApJ...826..135L Lee, Sang-Sung;... Acceleration of Compact Radio Jets on Sub-parsec Scales
95. 2016ApJ...825...47P Peng, Fang-Kun;... Search for High-energy Gamma-ray Emission from Tidal Disruption Events with the ...
96. 2016ApJ...824..108L Lewis, Tiffany ... Time-dependent Electron Acceleration in Blazar Transients: X-Ray Time Lags and S...
97. 2016ApJ...822...21H Hodges-Kluck, E... The Rotation of the Hot Gas around the Milky Way
98. 2016ApJ...821...61P Partridge, B.; ... Absolute Calibration of the Radio Astronomy Flux Density Scale at 22 to 43 GHz U...
99. 2016ApJ...819..156B Balokovic, M.; ... Multiwavelength Study of Quiescent States of Mrk 421 with Unprecedented Hard X-R...
100. 2016ApJ...818L...2W Wei, Jun-Jie; W... Tests of the Einstein Equivalence Principle Using TeV Blazars
101. 2016ApJ...818..187I Inoue, Yoshiyuk... Lower Bound on the Cosmic TeV Gamma-Ray Background Radiation
102. 2016ApJ...818..113N Neeleman, Marce... The H I Content of the Universe Over the Past 10 GYRS
103. 2016ApJ...816...24K Kakuwa, Jun Stochastic Gyroresonant Acceleration for Hard Electron Spectra of Blazars: Effec...
104. 2016AJ....152...53B Berghea, C. T.;... A Global Astrometric Solution for Pan-STARRS Referenced to ICRF2
105. 2016AJ....152...12L Lister, M. L.; ... MOJAVE: XIII. Parsec-scale AGN Jet Kinematics Analysis Based on 19 years of VLBA...
106. 2016AJ....151..133L Lister, M. L.; ... Erratum: "Mojave. X. Parsec-scale Jet Orientation Variations and Superluminal Mo...
107. 2016AJ....151...79L Le Bail, K.; Gi... IVS Observation of ICRF2-Gaia Transfer Sources
108. 2016A&A...596A..45F Fuhrmann, L.; A... The F-GAMMA programme: multi-frequency study of active galactic nuclei in the Fe...
109. 2016A&A...596A..14S Saulder, Christ... The matter distribution in the local Universe as derived from galaxy groups in S...
110. 2016A&A...593A..98L Lindfors, E. J.... Optical and radio variability of the northern VHE gamma-ray emitting BL Lacertae...
111. 2016A&A...593A..91A Ahnen, M. L.; A... Long-term multi-wavelength variability and correlation study of Markarian 421 fr...
112. 2016A&A...592A..22H Hervet, O.; Boi... An innovative blazar classification based on radio jet kinematics
113. 2016A&A...591A..83S Sinha, A.; Shuk... Long-term study of Mkn 421 with the HAGAR Array of Telescopes
114. 2016A&A...590A..68R Richter, P.; Wa... An HST/COS legacy survey of intervening Si III absorption in the extended gaseou...
115. 2016A&A...587A..93R Rappoldi, A.; L... Search of MeV-GeV counterparts of TeV sources with AGILE in pointing mode
116. 2015PASJ...67...45I Itoh, Ryosuke; ... An emergence of a new polarized emission region in blazar Mrk 421 associated wit...
117. 2015MNRAS.452.4274P Pushkarev, A. B... Milky Way scattering properties and intrinsic sizes of active galactic nuclei co...
118. 2015MNRAS.452.3159A Armstrong, Thom... The detection of Fermi AGN above 100 GeV using clustering analysis
119. 2015MNRAS.451.4193C Chen, Y. Y.; Zh... Core-dominance parameter, black hole mass and jet-disc connection for Fermi blaz...
120. 2015MNRAS.451.2750X Xiong, Dingrong... From the 'blazar sequence' to unification of blazars and radio galaxies
121. 2015MNRAS.451.1502T Tavecchio, F.; ... High-energy cosmic neutrinos from spine-sheath BL Lac jets
122. 2015MNRAS.450.2658M Mufakharov, T.;... The observed radio/gamma-ray emission correlation for blazars with the Fermi-LAT...
123. 2015MNRAS.449..551K Kakuwa, Jun; To... Synchrotron self-Compton emission by relativistic electrons under stochastic acc...
124. 2015MNRAS.448.3766K Krivonos, R.; T... INTEGRAL 11-year hard X-ray survey above 100 keV
125. 2015MNRAS.448.3121H Hovatta, T.; Pe... A combined radio and GeV gamma-ray view of the 2012 and 2013 flares of Mrk 421
126. 2015MNRAS.448.2412P Petropoulou, M.... Photohadronic origin of gamma -ray BL Lac emission: implications for IceCube neu...
127. 2015ApJS..218...23A Acero, F.; Acke... Fermi Large Area Telescope Third Source Catalog
128. 2015ApJS..218...10V van den Bosch, ... Hunting for Supermassive Black Holes in Nearby Galaxies With the Hobby--Eberly T...
129. 2015ApJS..217...21F Fang, Taotao; B... XMM-Newton Survey of Local O VII Absorption Lines in the Spectra of Active Galac...
130. 2015ApJS..217....2M Massaro, F.; D'... Refining the Associations of the Fermi Large Area Telescope Source Catalogs
131. 2015ApJ...812...60B Biteau, J.; Wil... The Extragalactic Background Light, the Hubble Constant, and Anomalies: Conclusi...
132. 2015ApJ...811L...6B Bower, Geoffrey... A Black Hole Mass-Variability Timescale Correlation at Submillimeter Wavelengths
133. 2015ApJ...811..143P Paliya, Vaidehi... The Violent Hard X-Ray Variability of Mrk 421 Observed by NuSTAR in 2013 April
134. 2015ApJ...810...14A Ackermann, M.; ... The Third Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Tel...
135. 2015ApJ...807L..14N Niinuma, K.; Ki... Discovery of a Wandering Radio Jet Base after a Large X-Ray Flare in the Blazar ...
136. 2015ApJ...802..113K Kadowaki, L. H.... The Role of Fast Magnetic Reconnection on the Radio and Gamma-ray Emission from ...
137. 2015ApJ...799L...8K King, Ashley L.... The Rate of Gas Accretion onto Black Holes Drives Jet Velocity
138. 2015ApJ...798...27I Isobe, Naoki; S... MAXI Investigation into the Long-term X-Ray Variability from the Very-high-energ...
139. 2015AJ....150...58F Fey, A. L.; Gor... The Second Realization of the International Celestial Reference Frame by Very Lo...
140. 2015AJ....149..191L Liu, H. T.; Bai... Constraints on Black Hole Masses with Timescales of Variations in Blazars
141. 2015AJ....149..171T Tully, R. Brent... Galaxy Groups: A 2MASS Catalog
142. 2015AJ....149...32M Marvil, Joshua;... Integrated Radio Continuum Spectra of Galaxies
143. 2015A&A...583A..75S Souchay, J.; An... The third release of the Large Quasar Astrometric Catalog (LQAC-3): a compilatio...
144. 2015A&A...581A.126S Selig, Marco; V... The denoised, deconvolved, and decomposed Fermi gamma-ray sky. An application of...
145. 2015A&A...580A.100S Sinha, A.; Shuk... Underlying particle spectrum of Mkn 421 during the huge X-ray flare in April 201...
146. 2015A&A...579A..34A Arsioli, B.; Fr... 1WHSP: An IR-based sample of ~1000 VHE gamma-ray blazar candidates
147. 2015A&A...578A..92V Vovk, Ievgen; B... Minimal variability time scale - central black hole mass relation of the gamma-r...
148. 2015A&A...578A..61D Diaz-Gimenez, E... Where are compact groups in the local Universe?
149. 2015A&A...578A..22A Aleksic, J.; An... Unprecedented study of the broadband emission of Mrk 421 during flaring activity...
150. 2015A&A...576A.126A Aleksic, J.; An... The 2009 multiwavelength campaign on Mrk 421: Variability and correlation studie...
151. 2015A&A...573A..69W Wierzcholska, A... Longterm optical monitoring of bright BL Lacertae objects with ATOM: Spectral va...
152. 2014PASJ...66...83S Sakai, Kazuhiro... Structual study of Galactic hot gas toward Markarian 421 from X-ray absorption a...
153. 2014MNRAS.445..428M Max-Moerbeck, W... Time correlation between the radio and gamma-ray activity in blazars and the pro...
154. 2014MNRAS.443..474P Padovani, P.; R... Are both BL Lacs and pulsar wind nebulae the astrophysical counterparts of IceCu...
155. 2014MNRAS.442.3166Z Zheng, Y. G.; K... X-ray and gamma-ray variability of Mrk 421
156. 2014MNRAS.442..629R Raiteri, C. M.;... Infrared properties of blazars: putting the GASP-WEBT sources into context
157. 2014MNRAS.441.3591H Harris, J.; Cha... An investigation into the spectral properties of bright Fermi blazars
158. 2014MNRAS.441.3375X Xiong, D. R.; Z... Intrinsic gamma-ray luminosity, black hole mass, jet and accretion in Fermi blaz...
159. 2014MNRAS.441.1899F Fuhrmann, L.; L... Detection of significant cm to sub-mm band radio and gamma-ray correlated variab...
160. 2014MNRAS.439.2933Y Yan, Dahai; Zen... The physical properties of Fermi BL Lac objects jets
161. 2014MNRAS.439..690H Hovatta, T.; Pa... Connection between optical and gamma-ray variability in blazars
162. 2014MNRAS.438.3058R Richards, J. L.... Connecting radio variability to the characteristics of gamma-ray blazars
163. 2014ApJS..215...14D D'Abrusco, R.; ... The WISE Blazar-like Radio-loud Sources: An All-sky Catalog of Candidate gamma-r...
164. 2014ApJS..212...15F Farnes, J. S.; ... A Broadband Polarization Catalog of Extragalactic Radio Sources
165. 2014ApJ...797...25P Piner, B. Glenn... First-epoch VLBA Imaging of 20 New TeV Blazars
166. 2014ApJ...796..109A Aartsen, M. G.;... Searches for Extended and Point-like Neutrino Sources with Four Years of IceCube...
167. 2014ApJ...795...91S Sinha, Atreyee;... Estimation of the Extragalactic Background Light Using TeV Observations of BL La...
168. 2014ApJ...794..126F Fang, Ke; Fujii... Is the Ultra-high Energy Cosmic-Ray Excess Observed by the Telescope Array Corre...
169. 2014ApJ...794....8S Stern, Boris E.... The Mystery of Spectral Breaks: Lyman Continuum Absorption by Photon-Photon Pair...
170. 2014ApJ...793...36L Lyu, Fen; Liang... Distributions of Gamma-Ray Bursts and Blazars in the L_p_-E_p_-Plane and Possibl...
171. 2014ApJ...791...21F Finke, Justin D... Fourier Analysis of Blazar Variability
172. 2014ApJ...789..135W Williamson, Kar... Comprehensive Monitoring of Gamma-Ray Bright Blazars. I. Statistical Study of Op...
173. 2014ApJ...789...66Z Zhang, Haocheng... Synchrotron Polarization in Blazars
174. 2014ApJ...788..179C Chen, Liang Curvature of the Spectral Energy Distributions of Blazars
175. 2014ApJ...786..143S Sobolewska, M. ... Stochastic Modeling of the Fermi/LAT gamma-Ray Blazar Variability
176. 2014ApJ...786..129D Di Mauro, M.; D... Diffuse gamma-Ray Emission from Unresolved BL Lac Objects
177. 2014ApJ...785L..24F Fang, Taotao; J... High Resolution X-Ray Spectroscopy of the Local Hot Gas along the 3C 273 Sightli...
178. 2014ApJ...784...54H Henley, David B... Is the Milky Way's Hot Halo Convectively Unstable?
179. 2014ApJ...782..110A Abdo, A. A.; Ab... The Study of TeV Variability and the Duty Cycle of Mrk 421 from 3 yr of Observat...
180. 2014ApJ...781...19B Bulgarelli, A.;... The AGILE Alert System for Gamma-Ray Transients
181. 2014ApJ...780...73A Ajello, M.; Rom... The Cosmic Evolution of Fermi BL Lacertae Objects
182. 2014ApJ...780...64A Asano, Katsuaki... Time-dependent Models for Blazar Emission with the Second-order Fermi Accelerati...
183. 2014AJ....147..143H Hovatta, Talvik... MOJAVE: Monitoring of Jets in Active Galactic Nuclei with VLBA Experiments. XI. ...
184. 2014A&A...572A..59M Mingaliev, M. G... RATAN-600 multi-frequency data for the BL Lacertae objects
185. 2014A&A...571A..54L Lico, R.; Girol... Very Long Baseline polarimetry and the gamma-ray connection in Markarian 421 dur...
186. 2014A&A...570A..77P Pian, E.; Turle... An active state of the BL Lacertae object Markarian 421 detected by INTEGRAL in ...
187. 2014A&A...564A...9H H.E.S.S. Collab... Flux upper limits for 47 AGN observed with H.E.S.S. in 2004-2011
188. 2014A&A...563A..57S Soldi, S.; Beck... Long-term variability of AGN at hard X-rays
189. 2014A&A...562A..64W Wu, Zhongzu; Ji... Why are some BL Lacertaes detected by Fermi, but others not?
190. 2013PASP..125..344P Pace, Cameron J... The Stability of BVRI Comparison Stars Near Selected TeV Blazars
191. 2013PASJ...65..109C Cao, Gang; Wang... Particle Acceleration and Emission Processes in Mrk 421
192. 2013NewA...18....1D Du, L. M.; Bai,... The connection between the jet and accretion disk power for blazars
193. 2013MNRAS.436..304P Potter, William... Synchrotron and inverse-Compton emission from blazar jets - IV. BL Lac type blaz...
194. 2013MNRAS.434.2684M Mastichiadis, A... Mrk 421 as a case study for TeV and X-ray variability in leptohadronic models
195. 2013MNRAS.431.2661C Cotini, Stefano... The merger fraction of active and inactive galaxies in the local Universe throug...
196. 2013MNRAS.430.2464M March&227;, M. ... The CLASS BL Lac sample: the radio luminosity function
197. 2013ApJS..209...34A Ackermann, M.; ... The First Fermi-LAT Catalog of Sources above 10 GeV
198. 2013ApJS..207...36H Hiroi, Kazuo; U... The 37 Month MAXI/GSC Source Catalog of the High Galactic-Latitude Sky
199. 2013ApJS..207...28S Stroh, Michael ... Swift X-Ray Telescope Monitoring of Fermi-LAT Gamma-Ray Sources of Interest
200. 2013ApJS..207...19B Baumgartner, W.... The 70 Month Swift-BAT All-sky Hard X-Ray Survey
201. 2013ApJS..207...16M Massaro, F.; Pa... BL Lac Candidates for TeV Observations
202. 2013ApJS..206...12D D'Abrusco, R.; ... Unveiling the Nature of Unidentified Gamma-Ray Sources. I. A New Method for the ...
203. 2013ApJ...779...92A Aliu, E.; Archa... Long Term Observations of B2 1215+30 with VERITAS
204. 2013ApJ...779...27B Bartoli, B.; Be... TeV Gamma-Ray Survey of the Northern Sky Using the ARGO-YBJ Detector
205. 2013ApJ...777L..21D Darling, Jeremy... Objects Appear Smaller as they Recede: How Proper Motions can Directly Reveal th...
206. 2013ApJ...774L...5Z Zhang, Jin; Lia... Radiation Mechanism and Jet Composition of Gamma-Ray Bursts and GeV-TeV-selected...
207. 2013ApJ...773..177N Nakagawa, Kenji... Time Series Analysis of Gamma-Ray Blazars and Implications for the Central Black...
208. 2013ApJ...772..114R Rivers, Elizabe... Full Spectral Survey of Active Galactic Nuclei in the Rossi X-ray Timing Explore...
209. 2013ApJ...771L..42T Takahashi, Keit... Lower Bounds on Magnetic Fields in Intergalactic Voids from Long-term GeV-TeV Li...
210. 2013ApJ...771...57A Ackermann, M.; ... The Fermi All-sky Variability Analysis: A List of Flaring Gamma-Ray Sources and ...
211. 2013ApJ...770...77D Dominguez, A.; ... Detection of the Cosmic gamma-Ray Horizon from Multiwavelength Observations of B...
212. 2013ApJ...770...60S Shimizu, T. Tar... The First Hard X-Ray Power Spectral Density Functions of Active Galactic Nucleus
213. 2013ApJ...768..197I Inoue, Yoshiyuk... Extragalactic Background Light from Hierarchical Galaxy Formation: Gamma-Ray Att...
214. 2013ApJ...768...52P Paliya, Vaidehi... The Nature of gamma-Ray Loud Narrow-line Seyfert I Galaxies PKS 1502+036 and PKS...
215. 2013ApJ...767..103V Vovk, Ie.; Nero... Variability of Gamma-Ray Emission from Blazars on Black Hole Timescales
216. 2013ApJ...767...14P Pursimo, Tapio;... The Micro-Arcsecond Scintillation-Induced Variability (MASIV) Survey. III. Optic...
217. 2013ApJ...765..122Y Yan, Dahai; Zha... Emitting Electrons Spectra and Acceleration Processes in the Jet of Mrk 421: Fro...
218. 2013ApJ...765...54A Ackermann, M.; ... Determination of the Point-spread Function for the Fermi Large Area Telescope fr...
219. 2013ApJ...764..119S Senturk, G. D.;... Gamma-ray Observational Properties of TeV-detected Blazars
220. 2013AJ....146..120L Lister, M. L.; ... MOJAVE. X. Parsec-scale Jet Orientation Variations and Superluminal Motion in Ac...
221. 2013AJ....145...31K Kapanadze, Bidz... Catalog and Statistical Study of X-Ray Selected BL Lacertae Objects
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1087. 1985ApJS...59..513A ALLER H.D., ALL... Spectra and linear polarizations of extragalactic variable sources at centimeter...
1088. 1985ApJS...59..323S SITKO M.L., SCH... Optical polarimetry of BL Lacertae objects and violent variable quasars
1089. 1985ApJS...58..255M MOLES M., GARCI... UBVRI observations of BL Lacertae objects
1090. 1985ApJ...298..630L LEDDEN J.E., O'... The radio-optical-X-ray spectral flux distributions of blazars
1091. 1985ApJ...297..199S SINGH K.P., GAR... Soft X-ray observations of two BL Lacertae objects : Markarian 421 and 501
1092. 1985ApJ...294..158A ANTONUCCI R.R.J... Extended radio emission and the nature of blazars
1093. 1985AJ.....90...30R RUSK R., SEAQUI... Alignment of radio and optical polarization with VLBI structure
1094. 1985A&AS...59..255F Ficarra, A., Gr... A new Bologna sky survey at 408 MHz
1095. 1984MNRAS.209..697L LLOYD C. Optical monitoring of radio sources
1096. 1984MNRAS.209..665A ALLINGTON-SMITH... A complete sample of extragalactic radio sources at 1 Jy at 408 MHz - III. Estim...
1097. 1984MitAG..62..101B BIERMANN P. First results from the X-ray satellite EXOSAT
1098. 1984IUE6N.R....143M MUFSON S.L., HU... Coordinated multifrequency observations of the BL Lac objects MRK 180, MRK 421, ...
1099. 1984IUE6N.R....139U URRY C.M., KOND... Very recent IUE observations of 2 BL Lacertae objects
1100. 1984IKryO..69...78E EFANOV V.A., MO... The observations of extragalactic radio sources at 8.2 and 13.5 mm wavelengths
1101. 1984ApJS...56..507W WOOD K.S., MEEK... The HEAO A-1 X-ray source catalog
1102. 1984ApJ...287..633M MARSHALL F.J., ... SAS 3 survey of the soft X-ray background
1103. 1984ApJ...284..519W WEHRLE, A. E., ... A SEARCH AT THE MILLIJANSKY LEVEL FOR MILLI-ARCSECOND CORES IN A COMPLETE SAMPLE...
1104. 1984ApJ...284...54U UBERTINI P., BA... Hard X-ray variability of three active galactic nuclei
1105. 1984ApJ...279...93W WARDLE J.F.C., ... The radio morphology of blazars and relationships to optical polarization and to...
1106. 1984ApJ...276..466U ULRICH M.H., HA... Variability of the ultraviolet spectrum of BL Lacertae objects
1107. 1984AJ.....89.1111H HEESCHEN D.S. Flickering of extragalactic radio sources
1108. 1984AJ.....89..441C CRUZ-GONZALEZ I... Continuum distributions of an X-ray observed sample of BL Lac objects
1109. 1984AJ.....89..189U ULVESTAD J.S., ... A search for arcminute -scale radio emission in BL Lacertae objects
1110. 1984A&AS...58..317T TOVMASSIAN H.M.... The radio emission of Markarian galaxies at lambda 11 cm
1111. 1983PASP...95..842S SEIELSTAD G.A.,... 10.8-GHz flux density variations among a complete sample of sources from the NRA...
1112. 1983PASP...95..724S SITKO M.L., STE... 0.35-3.5 micron photometry of polarized QSOs
1113. 1983MSAIt..54..399M MARASCHI L., TA... Far ultraviolet observations of BL Lac objects
1114. 1983MNRAS.205..875P PYE J.P., MCHAR... The Ariel V sky survey of fast-transient X-ray sources
1115. 1983MNRAS.204p..23B Browne, I. W. A... Is it possible to turn an elliptical radio galaxy into a BL Lac object?
1116. 1983MNRAS.204..811C CLEMENTS E.D. Optical positions of Seyfert galaxies- II
1117. 1983MNRAS.202..397I IMPEY C.D. Multiaperture infrared photometry of extragalactic radio sources
1118. 1983BAAS...15..876H HUTTER D.J., MU... Coordinated multifrequency observations and source models of the BL Lac Objects ...
1119. 1983ApJS...52...89H HUCHRA J., DAVI... A survey of galaxy redshifts. IV. The data
1120. 1983ApJS...51....1N NUGENT J.J., JE... HEAO A-2 soft X-ray source catalog
1121. 1983ApJ...275..467M Madejski, G. M.... X-ray studies of BL Lacertae objects with the Einstein Observatory - Confrontati...
1122. 1983ApJ...272..400H Heckman, T. M.;... An infrared and optical investigation of galactic nuclei with compact radio sour...
1123. 1983ApJ...272...11P Pica, A. J.; Sm... Optical variability, absolute luminosity, and the Hubble diagram for QSOs
1124. 1983ApJ...268...68L LANDAU R., JONE... Extragalactic 1 mm sources : simultaneous observations at cm, mm and visual wave...
1125. 1983ApJ...266..459S SCHWARTZ D.A., ... Studies of BL Lac objects with the Einstein x-ray observatory : the absolute vol...
1126. 1983ApJ...266...18U ULVESTAD J.S., ... The arc second radio structure of 12 BL Lacertae objects
1127. 1983ApJ...264...92T TENNANT A.F., M... The absence of rapid X-ray variability in active galaxies
1128. 1983Ap&SS..91...35C COE M.J., BOWRI... A study of the long-term variability in radio emission of active galaxies
1129. 1983AJ.....88..143M MACHALSKI J., C... A complete sample of intermediate-strength radio sources selected from the GB/GB...
1130. 1983Afz....19..199H HAGEN-THORN V.A... B2 1101+38 (Mkn 421) polarization and photometric behaviour in the optical durin...
1131. 1983A&A...125...52B BASSANI L., DEA... Super-Eddington luminosity characteristics of active galactic nuclei
1132. 1983A&A...120..297E Ekers, R. D., F... Variability at 5 GHz in low luminosity radio nuclei of galaxies and quasars
1133. 1983A&A...119L...3S SHOSTAK G.S., V... A search for neutral hydrogen in radio galaxies
1134. 1982SvA....26..371L LIPUNOV V.M., S... X-ray astronomy
1135. 1982Natur.298..140S STANNARD, D., M... Extended radio structure of BL Lac type objects
1136. 1982MNRAS.201..331A ALLINGTON-SMITH... A complete sample of extragalactic radio sources at 1 Jy at 408 MHz. II. The opt...
1137. 1982MNRAS.199..611A ALLINGTON-SMITH... A complete sample of extragalactic radio sources at 1 Jy at 408 MHz - I. The rad...
1138. 1982IUE4N.R....335H HACKNEY R.L., H... Spectral anomalies in low-dispersion SWP images
1139. 1982IAUS...97..335A ALLER, M., ALLE... Cm-wavelength fluxes and polarizations of compact extra-galactic X-ray sources
1140. 1982BAAS...14..932T Ubertini, P. No Title available
1141. 1982BAAS...14..932F Feigelson, E.D.... X-Ray Observations of 20 Bright Radio Galaxies
1142. 1982ATsir1247....1M MALUMIAN, V. ON THE VARIABILITY OF THE RADIO EMISSION OF MARKARIAN421
1143. 1982ATsi.1247....1M MALUMIAN V.H. On the variability of the radio emission of Markarian 421
1144. 1982ARA&A..20..431B Balick, B., Hec... Extranuclear clues to the origin and evolution of activity in galaxies
1145. 1982ApL....23...17C COE M.J., BOWRI... A search for short time variability in the radio emission from active galaxies
1146. 1982ApJ...261...12U URRY C.M., MUSH... Ultraviolet and x-ray observations of the BL Lac PKS 0548-322
1147. 1982ApJ...259...96U ULVESTAD J.S. An investigation of the star-burst model for radio emission from Seyfert galaxie...
1148. 1982ApJ...258...53H HICKSON P., FAH... CCD photometry of Markarian 421 and 501
1149. 1982ApJ...253...38U URRY C.M., MUSH... PKS 2155-304 : relativistically beamed synchrotron radiation from a BL Lacertae ...
1150. 1982AJ.....87.1132M MACHALSKI, J., ... A COMPLETE SAMPLE OF INTERMEDIATE-STRENGTH RADIO SOURCES SELECTED FROM THE GB/GB...
1151. 1982AJ.....87..517M MORABITO, D. D.... ARCSECOND POSITIONS FOR MILLIARCSECOND VLBI NUCLEI OF EXTRAGALACTIC RADIO SOURCE...
1152. 1981SvA....25..397A Artyukh, V. S.,... A survey of BL Lacertae-type radio sources at 102 MHz
1153. 1981SSRev..30...47H Hall, R. No Title Available
1154. 1981PASP...93..681M MILLER J.S. The galaxy components of BL Lacertae objects, N systems, and quasi-stellar objec...
1155. 1981MNRAS.197..893M McHardy, I. M.,... The Ariel V (3A) catalogue of X-ray sources - II. Sources at high galactic latit...
1156. 1981MNRAS.197..627B BAILEY J., CUNN... Infrared and optical polarization of Markarian 421
1157. 1981BAAS...13..531H Hickson, P., Fa... CCD Observations of Mkn 421 and Mkn 501
1158. 1981ApJ...248L..61M MUFSON S.L., HU... The detection of x-ray emission from the BL Lacertae object Markarian 180
1159. 1981ApJ...243..700K KONIGL A. Relativistic jets as X-ray and gamma-ray sources
1160. 1981ApJ...243..690K KONDO Y., WORRA... Quasi-simultaneous observations of BL Lac object Mrk 501 in X-ray, UV, visible, ...
1161. 1981ApJ...243..681U ULMER M.P., KOW... A survey of rich clusters of galaxies with HEAO 1. II
1162. 1981ApJ...243...53W WORRALL D.M., B... Variable X-ray spectra of BL Lac objects : HEAO 1 observations of PKS 0548-322 a...
1163. 1981AJ.....86.1585H HUTTER D.J., MU... An optical and X-ray survey of S- type Markarian galaxies
1164. 1981Afz....17..403A AFANASEV, V., S... Velocity field of the Seyfert galaxy Markaryan 744
1165. 1981A&AS...45...61F FANTI, C., FANT... Low frequency variable sources 5 year monitoring program at 408 MHz
1166. 1981A&AS...43..121B BALKOWSKI, C., ... Optical and radio determinations of radial velocities of the parent galaxies of ...
1167. 1981A&A...103..342Z ZEKL, H., KLARE... OPTICAL BRIGHTNESS VARIATIONS OF BL-LACERTAE OBJECTS
1168. 1981A&A....96..316B BAATH L.B., ELG... The radio fine structure of the BL Lac objects A0235+164, 0735+178, BL Lac, 1749...
1169. 1980MNRAS.190..269W WEILER K.W., JO... A study of BL Lac objects
1170. 1980IUE2E.R....267B BROMAGE G.E., B... Observations of the star-like BL Lac object OI 090.4
1171. 1980ApJ...241...74M MUFSON S.L., WI... The continuous spectrum of Mrk 421 during periods of X-ray satellite observation...
1172. 1980ApJ...240..447P PEROLA G.C., TA... IUE spectra of the jet and the nucleus of M 87
1173. 1980ApJ...237..331P Puschell, J. J.... Observations of Strongly Polarized Extragalactic Sources
1174. 1980AJ.....85.1555W WILLS, D., WILL... OPTICAL POLARIMETRY OF QUASI-STELLAR AND BL LAC OBJECTS
1175. 1980AJ.....85.1462K KOJOIAN G., TOV... Radio survey of Markarian galaxies at 6 and 11 cm
1176. 1980AJ.....85.1442P PICA, A., POLLO... Long-term optical behavior of 114 extragalactic sources
1177. 1980AJ.....85..363L LANDAU, R., EPS... VARIABLE RADIO SOURCES: 90 GHz FLUX DENSITIES
1178. 1980AJ.....85..351O OWEN, F. N., SP... SIMULTANEOUS RADIO SPECTRA OF SOURCES WITH STRONG MILLIMETER COMPONENTS
1179. 1980A&A....81..235B BIERMANN, P., P... Radio continuum observations of Markarian Galaxies at 1410, 2380, and 5000 MHz
1180. 1979MNRAS.187..581G Guthrie, B. N. ... Orientations of radio galaxies
1181. 1979BAAS...11..465W Worrall, D.M., ... X-Ray Spectra of BL Lacertae Objects
1182. 1979ApL....20...63C COE M.J., DENNI... High energy X-ray observations of BL Bac objects
1183. 1979ApJ...232L..17M MUSHOTZKY, R., ... A change in the X-ray spectrum of Markarian 421
1184. 1979ApJ...229L..53S SCHWARTZ D.A., ... X-ray emitting BL Lac objects located by the scanning modulation collimator expe...
1185. 1979ApJ...227L..63H HEARN, D., MARS... Discovery of soft X-ray flux from 2A 1102+384 = Markarian 421
1186. 1979AJ.....84..164M MACHALSKI, J., ... Detailed radio spectra of flat-spectrum sources in the GB2 1400-MHz survey
1187. 1979A&A....74L..11K KAPAHI, V. Westerbork observations of flat spectrum galaxies in the 5 GHz 'S4' survey
1188. 1978PittC.B....169M Mushotzky, R. F... No Title Available
1189. 1978PittC.B....159M Wolfe, A. M. No Title Available
1190. 1978Natur.275..404B BOKSENBERG, A.,... IUE observations of extragalactic objects
1191. 1978IAUC.3224....1M Marshall, F. J.... No Title Available
1192. 1978IAUC.3221....1T TAYLOR, G., DUN... Occultation of SAO 85009 by (2) Pallas on 1978 May 29
1193. 1978IAUC.3212....1H HEARN, D., MARS... 2A 1102+384
1194. 1978IAUC.3161....1H HOLT, S., KALUZ... X-Ray Flare
1195. 1978BAAS...10..503M Mushotzky, R.F.... HEAO-1 Observations of Compact Extragalactic X-Ray Sources
1196. 1978ApJS...38..267O O'Dell, S. L., ... The Changes in Spectral-Flux Distribution During Variability of Extragalactic No...
1197. 1978ApJ...226L..65M MUSHOTZKY, R., ... X-ray observations of BL Lacertae objects
1198. 1978ApJ...224..368M MAZA, J., MARTI... On the composite nature of the BL Lacertae objects Markarian 421 and 501
1199. 1978ApJ...224...22O O'Dell, S. L., ... Coordinated Photometric and Spectroscopic Observations of Strong Extragalactic 9...
1200. 1978ApJ...222L...3U Ulrich, M. H. Spectra of the Stellar Population in Three Objects Related to BL Lacertae
1201. 1978ApJ...221..456C CONDON, J., DRE... Compact radio sources in and near bright galaxies
1202. 1978AJ.....83.1021M MARGON, B., JON... X-ray emission from BL-Lacertae objects. II - The nature of Markarian 421
1203. 1978AJ.....83..685O Owen, F. N., Po... Observations of Radio Sources with Flat Spectra
1204. 1978AJ.....83..451P PAULINY-TOTH, I... THE 5 GHz STRONG SOURCE SURVEYS. IV. SURVEY OF THE AREA BETWEEN DECLINATION 35 A...
1205. 1977TrLen..33...15H Hagen-Thorn, V.... Photographic photometry of compact extragalactic objects. V
1206. 1977PASP...89..119P PURTON, C., KOJ... Markarian 421: A Lacertid
1207. 1977ApL....18..151A ANDRILLAT Y., S... 8000-11000 A spectra of emission line galaxies with infrared excesses
1208. 1977ApJS...35..171H Huchra, J. P. The Nature of Markarian Galaxies
1209. 1977ApJ...218L..37R Rieke, G. H., L... Infrared and Visible Polarimetry and Photometry of Highly Variable Quasistellar ...
1210. 1977ApJ...218L..33S Setti, G.; Wolt... Clustering of quasars
1211. 1977ApJ...217..382M MILLER, H., WIL... A recent photometric investigation of the BL Lacertae object, B2 1101+38
1212. 1977A&A....60..353B BIEGING, J., PA... Radio continuum observations of Markarian galaxies at 1410 MHz and 2700 MHz
1213. 1976PASP...88..870J Joyce, R. R., a... 3-Millimeter and Infrared Continuum Observations of Markarian Galaxies
1214. 1976BAAS....8..313P Pollock, J. T. No Title Available
1215. 1976ApJ...207..367A ALLEN D.A. The near-infrared continua of emission-line galaxies
1216. 1976ApJ...205....1K KINMAN, T. Photoelectric magnitudes and polarization data for possible BL Lacertae objects
1217. 1976ApJ...203..323K KOJOIAN, G., DI... The radio spectra of Markarian galaxies
1218. 1976AN....297..283D DICKINSON, D., ... Radio spectra of some Markarian galaxies
1219. 1976AJ.....81..582S SULENTIC, J. Radio emission and optical morphology in Markarian galaxies
1220. 1976AJ.....81....7S SCOTT, R., LEAC... Optical behavior of 64 extragalactic radio sources
1221. 1976A&AS...25..287V VERON, P., VERO... UBV sequences in the fields of Mrk 421 and 501
1222. 1975SoByu..47....3A ARAKELIAN M.A. The galaxies of high surface brightness
1223. 1975BAAS....7..453S Serkowski, K. No Title Available
1224. 1975ApJ...201L.109M MILLER H.R. B2 1101+38: a BL Lac object
1225. 1975ApJ...198..261U ULRICH M.H., KI... Nonthermal continuum radiation in three elliptical galaxies
1226. 1975ApJ...196..339S SRAMEK, R., TOV... A radio survey of Markarian galaxies at 6 centimeters
1227. 1975Afz....11...21V Vardanian, R. A... Some properties of Markarian Galaxies
1228. 1975A&AS...20....1C Colla, G., Fant... Radio and Optical Data on a Complete Sample of Radio Faint Galaxies
1229. 1975A&A....39..281V VERON, P., VERO... Photographic Photometry of Five BL Lacertae-type Objects
1230. 1975A&A....38..209C Colla, G., Fant... A Complete Sample of Radiosources identified with Elliptical Galaxies: Radio Lum...
1231. 1973UGC...C...0000N Nilson, P. Uppsala General Catalogue of Galaxies, 1973, Acta Universitatis Upsalienis, Nova...
1232. 1973AJ.....78..811P Peterson, S. D.... Optical Positions of the Markarian Galaxies
1233. 1973A&AS...11..291C Colla, G., Fant... THE B2 CATALOGUE OF RADIO SOURCES - THIRD PART
1234. 1972Afz.....8..155M Markarian, B. E... Galaxies with Ultraviolet Continuum V
1235. 1966CGCG3.C...0000Z Zwicky, F., Her... "Catalogue of Galaxies and of Clusters of Galaxies", 1966, volume III, Pasadena:...

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