Show simple item record

dc.contributor.authorKim, Jae-Young
dc.contributor.authorKrichbaum, Thomas P.
dc.contributor.authorBroderick, Avery E.
dc.contributor.authorWielgus, Maciek
dc.contributor.authorBlackburn, Lindy
dc.contributor.authorGomez, Jose L.
dc.contributor.authorJohnson, Michael D.
dc.contributor.authorBouman, Katherine L.
dc.contributor.authorChael, Andrew
dc.contributor.authorAkiyama, Kazunori
dc.contributor.authorJorstad, Svetlana
dc.contributor.authorMarscher, Alan P.
dc.contributor.authorIssaoun, Sara
dc.contributor.authorJanssen, Michael
dc.contributor.authorChan, Chi-kwan
dc.contributor.authorSavolainen, Tuomas
dc.contributor.authorPesce, Dominic W.
dc.contributor.authorOzel, Feryal
dc.contributor.authorAlberdi, Antxon
dc.contributor.authorAlef, Walter
dc.contributor.authorAsada, Keiichi
dc.contributor.authorAzulay, Rebecca
dc.contributor.authorBaczko, Anne-Kathrin
dc.contributor.authorBall, David
dc.contributor.authorBalokovic, Mislav
dc.contributor.authorBarrett, John
dc.contributor.authorBintley, Dan
dc.contributor.authorBoland, Wilfred
dc.contributor.authorBower, Geoffrey C.
dc.contributor.authorBremer, Michael
dc.contributor.authorBrinkerink, Christiaan D.
dc.contributor.authorBrissenden, Roger
dc.contributor.authorBritzen, Silke
dc.contributor.authorBroguiere, Dominique
dc.contributor.authorBronzwaer, Thomas
dc.contributor.authorByun, Do-Young
dc.contributor.authorCarlstrom, John E.
dc.contributor.authorChatterjee, Shami
dc.contributor.authorChatterjee, Koushik
dc.contributor.authorChen, Ming-Tang
dc.contributor.authorChen, Yongjun
dc.contributor.authorCho, Ilje
dc.contributor.authorChristian, Pierre
dc.contributor.authorConway, John E.
dc.contributor.authorCordes, James M.
dc.contributor.authorCrew, Geoffrey B.
dc.contributor.authorCui, Yuzhu
dc.contributor.authorDavelaar, Jordy
dc.contributor.authorDe Laurentis, Mariafelicia
dc.contributor.authorDeane, Roger
dc.contributor.authorDempsey, Jessica
dc.contributor.authorDesvignes, Gregory
dc.contributor.authorDexter, Jason
dc.contributor.authorDoeleman, Sheperd S.
dc.contributor.authorEatough, Ralph P.
dc.contributor.authorFalcke, Heino
dc.contributor.authorFish, Vincent L.
dc.contributor.authorFomalont, Ed
dc.contributor.authorFraga-Encinas, Raquel
dc.contributor.authorFriberg, Per
dc.contributor.authorFromm, Christian M.
dc.contributor.authorGalison, Peter
dc.contributor.authorGammie, Charles F.
dc.contributor.authorGarcia, Roberto
dc.contributor.authorGentaz, Olivier
dc.contributor.authorGeorgiev, Boris
dc.contributor.authorGoddi, Ciriaco
dc.contributor.authorGold, Roman
dc.contributor.authorGu, Minfeng
dc.contributor.authorGurwell, Mark
dc.contributor.authorHada, Kazuhiro
dc.contributor.authorHecht, Michael H.
dc.contributor.authorHesper, Ronald
dc.contributor.authorHo, Luis C.
dc.contributor.authorHo, Paul
dc.contributor.authorHonma, Mareki
dc.contributor.authorHuang, Chih-Wei L.
dc.contributor.authorHuang, Lei
dc.contributor.authorHughes, David H.
dc.contributor.authorIkeda, Shiro
dc.contributor.authorInoue, Makoto
dc.contributor.authorJames, David J.
dc.contributor.authorJannuzi, Buell T.
dc.contributor.authorJeter, Britton
dc.contributor.authorJiang, Wu
dc.contributor.authorJimenez-Rosales, Alejandra
dc.contributor.authorJung, Taehyun
dc.contributor.authorKarami, Mansour
dc.contributor.authorKaruppusamy, Ramesh
dc.contributor.authorKawashima, Tomohisa
dc.contributor.authorKeating, Garrett K.
dc.contributor.authorKettenis, Mark
dc.contributor.authorKim, Junhan
dc.contributor.authorKim, Jongsoo
dc.contributor.authorKino, Motoki
dc.contributor.authorKoay, Jun Yi
dc.contributor.authorKoch, Patrick M.
dc.contributor.authorKoyama, Shoko
dc.contributor.authorKramer, Michael
dc.contributor.authorKramer, Carsten
dc.contributor.authorKuo, Cheng-Yu
dc.contributor.authorLauer, Tod R.
dc.contributor.authorLee, Sang-Sung
dc.contributor.authorLi, Yan-Rong
dc.contributor.authorLi, Zhiyuan
dc.contributor.authorLindqvist, Michael
dc.contributor.authorLico, Rocco
dc.contributor.authorLiu, Kuo
dc.contributor.authorLiuzzo, Elisabetta
dc.contributor.authorLo, Wen-Ping
dc.contributor.authorLobanov, Andrei P.
dc.contributor.authorLoinard, Laurent
dc.contributor.authorLonsdale, Colin
dc.contributor.authorLu, Ru-Sen
dc.contributor.authorMacDonald, Nicholas R.
dc.contributor.authorMao, Jirong
dc.contributor.authorMarkoff, Sera
dc.contributor.authorMarrone, Daniel P.
dc.contributor.authorMarti-Vidal, Ivan
dc.contributor.authorMatsushita, Satoki
dc.contributor.authorMatthews, Lynn D.
dc.contributor.authorMedeiros, Lia
dc.contributor.authorMenten, Karl M.
dc.contributor.authorMizuno, Yosuke
dc.contributor.authorMizuno, Izumi
dc.contributor.authorMoran, James M.
dc.contributor.authorMoriyama, Kotaro
dc.contributor.authorMoscibrodzka, Monika
dc.contributor.authorMueller, Cornelia
dc.contributor.authorNagai, Hiroshi
dc.contributor.authorNagar, Neil M.
dc.contributor.authorNakamura, Masanori
dc.contributor.authorNarayan, Ramesh
dc.contributor.authorNarayanan, Gopal
dc.contributor.authorNatarajan, Iniyan
dc.contributor.authorNeri, Roberto
dc.contributor.authorNi, Chunchong
dc.contributor.authorNoutsos, Aristeidis
dc.contributor.authorOkino, Hiroki
dc.contributor.authorOlivares, Hector
dc.contributor.authorOrtiz-Leon, Gisela N.
dc.contributor.authorOyama, Tomoaki
dc.contributor.authorPalumbo, Daniel C. M.
dc.contributor.authorPark, Jongho
dc.contributor.authorPatel, Nimesh
dc.contributor.authorPen, Ue-Li
dc.contributor.authorPietu, Vincent
dc.contributor.authorPlambeck, Richard
dc.contributor.authorPopStefanija, Aleksandar
dc.contributor.authorPorth, Oliver
dc.contributor.authorPrather, Ben
dc.contributor.authorPreciado-Lopez, Jorge A.
dc.contributor.authorPsaltis, Dimitrios
dc.contributor.authorPu, Hung-Yi
dc.contributor.authorRamakrishnan, Venkatessh
dc.contributor.authorRao, Ramprasad
dc.contributor.authorRawlings, Mark G.
dc.contributor.authorRaymond, Alexander W.
dc.contributor.authorRezzolla, Luciano
dc.contributor.authorRipperda, Bart
dc.contributor.authorRoelofs, Freek
dc.contributor.authorRogers, Alan
dc.contributor.authorRos, Eduardo
dc.contributor.authorRose, Mel
dc.contributor.authorRoshanineshat, Arash
dc.contributor.authorRottmann, Helge
dc.contributor.authorRoy, Alan L.
dc.contributor.authorRuszczyk, Chet
dc.contributor.authorRyan, Benjamin R.
dc.contributor.authorRygl, Kazi L. J.
dc.contributor.authorSanchez, Salvador
dc.contributor.authorSanchez-Arguelles, David
dc.contributor.authorSasada, Mahito
dc.contributor.authorSchloerb, F. Peter
dc.contributor.authorSchuster, Karl-Friedrich
dc.contributor.authorShao, Lijing
dc.contributor.authorShen, Zhiqiang
dc.contributor.authorSmall, Des
dc.contributor.authorSohn, Bong Won
dc.contributor.authorSooHoo, Jason
dc.contributor.authorTazaki, Fumie
dc.contributor.authorTiede, Paul
dc.contributor.authorTilanus, Remo P. J.
dc.contributor.authorTitus, Michael
dc.contributor.authorToma, Kenji
dc.contributor.authorTorne, Pablo
dc.contributor.authorTrent, Tyler
dc.contributor.authorTraianou, Efthalia
dc.contributor.authorTrippe, Sascha
dc.contributor.authorTsuda, Shuichiro
dc.contributor.authorvan Bemmel, Ilse
dc.contributor.authorvan Langevelde, Huib Jan
dc.contributor.authorvan Rossum, Daniel R.
dc.contributor.authorWagner, Jan
dc.contributor.authorWardle, John
dc.contributor.authorWard-Thompson, Derek
dc.contributor.authorWeintroub, Jonathan
dc.contributor.authorWex, Norbert
dc.contributor.authorWharton, Robert
dc.contributor.authorWong, George N.
dc.contributor.authorWu, Qingwen
dc.contributor.authorYoon, Doosoo
dc.contributor.authorYoung, Andre
dc.contributor.authorYoung, Ken
dc.contributor.authorYounsi, Ziri
dc.contributor.authorYuan, Feng
dc.contributor.authorYuan, Ye-Fei
dc.contributor.authorZensus, J. Anton
dc.contributor.authorZhao, Guangyao
dc.contributor.authorZhao, Shan-Shan
dc.contributor.authorZhu, Ziyan
dc.contributor.authorAlgaba, Juan-Carlos
dc.contributor.authorAllardi, Alexander
dc.contributor.authorAmestica, Rodrigo
dc.contributor.authorAnczarski, Jadyn
dc.contributor.authorBach, Uwe
dc.contributor.authorBaganoff, Frederick K.
dc.contributor.authorBeaudoin, Christopher
dc.contributor.authorBenson, Bradford A.
dc.contributor.authorBerthold, Ryan
dc.contributor.authorBlanchard, Jay M.
dc.contributor.authorBlundell, Ray
dc.contributor.authorBustamente, Sandra
dc.contributor.authorCappallo, Roger
dc.contributor.authorCastillo-Dominguez, Edgar
dc.contributor.authorChang, Chih-Cheng
dc.contributor.authorChang, Shu-Hao
dc.contributor.authorChang, Song-Chu
dc.contributor.authorChen, Chung-Chen
dc.contributor.authorChilson, Ryan
dc.contributor.authorChuter, Tim C.
dc.contributor.authorRosado, Rodrigo Cordova
dc.contributor.authorCoulson, Iain M.
dc.contributor.authorCrowley, Joseph
dc.contributor.authorDerome, Mark
dc.contributor.authorDexter, Matthew
dc.contributor.authorDornbusch, Sven
dc.contributor.authorDudevoir, Kevin A.
dc.contributor.authorDzib, Sergio A.
dc.contributor.authorEckart, Andreas
dc.contributor.authorEckert, Chris
dc.contributor.authorErickson, Neal R.
dc.contributor.authorEverett, Wendeline B.
dc.contributor.authorFaber, Aaron
dc.contributor.authorFarah, Joseph R.
dc.contributor.authorFath, Vernon
dc.contributor.authorFolkers, Thomas W.
dc.contributor.authorForbes, David C.
dc.contributor.authorFreund, Robert
dc.contributor.authorGomez-Ruiz, Arturo, I
dc.contributor.authorGale, David M.
dc.contributor.authorGao, Feng
dc.contributor.authorGeertsema, Gertie
dc.contributor.authorGraham, David A.
dc.contributor.authorGreer, Christopher H.
dc.contributor.authorGrosslein, Ronald
dc.contributor.authorGueth, Frederic
dc.contributor.authorHaggard, Daryl
dc.contributor.authorHalverson, Nils W.
dc.contributor.authorHan, Chih-Chiang
dc.contributor.authorHan, Kuo-Chang
dc.contributor.authorHao, Jinchi
dc.contributor.authorHasegawa, Yutaka
dc.contributor.authorHenning, Jason W.
dc.contributor.authorHernandez-Gomez, Antonio
dc.contributor.authorHerrero-Illana, Ruben
dc.contributor.authorHeyminck, Stefan
dc.contributor.authorHirota, Akihiko
dc.contributor.authorHoge, James
dc.contributor.authorHuang, Yau-De
dc.contributor.authorImpellizzeri, C. M. Violette
dc.contributor.authorJiang, Homin
dc.contributor.authorJohn, David
dc.contributor.authorKamble, Atish
dc.contributor.authorKeisler, Ryan
dc.contributor.authorKimura, Kimihiro
dc.contributor.authorKono, Yusuke
dc.contributor.authorKubo, Derek
dc.contributor.authorKuroda, John
dc.contributor.authorLacasse, Richard
dc.contributor.authorLaing, Robert A.
dc.contributor.authorLeitch, Erik M.
dc.contributor.authorLi, Chao-Te
dc.contributor.authorLin, Lupin C-C
dc.contributor.authorLiu, Ching-Tang
dc.contributor.authorLiu, Kuan-Yu
dc.contributor.authorLu, Li-Ming
dc.contributor.authorMarson, Ralph G.
dc.contributor.authorMartin-Cocher, Pierre L.
dc.contributor.authorMassingill, Kyle D.
dc.contributor.authorMatulonis, Callie
dc.contributor.authorMcColl, Martin P.
dc.contributor.authorMcWhirter, Stephen R.
dc.contributor.authorMessias, Hugo
dc.contributor.authorMeyer-Zhao, Zheng
dc.contributor.authorMichalik, Daniel
dc.contributor.authorMontana, Alfredo
dc.contributor.authorMontgomerie, William
dc.contributor.authorMora-Klein, Matias
dc.contributor.authorMuders, Dirk
dc.contributor.authorNadolski, Andrew
dc.contributor.authorNavarro, Santiago
dc.contributor.authorNeilsen, Joseph
dc.contributor.authorNguyen, Chi H.
dc.contributor.authorNishioka, Hiroaki
dc.contributor.authorNorton, Timothy
dc.contributor.authorNowak, Michael A.
dc.contributor.authorNystrom, George
dc.contributor.authorOgawa, Hideo
dc.contributor.authorOshiro, Peter
dc.contributor.authorOyama, Tomoaki
dc.contributor.authorParsons, Harriet
dc.contributor.authorPenalver, Juan
dc.contributor.authorPhillips, Neil M.
dc.contributor.authorPoirier, Michael
dc.contributor.authorPradel, Nicolas
dc.contributor.authorPrimiani, Rurik A.
dc.contributor.authorRaffin, Philippe A.
dc.contributor.authorRahlin, Alexandra S.
dc.contributor.authorReiland, George
dc.contributor.authorRisacher, Christopher
dc.contributor.authorRuiz, Ignacio
dc.contributor.authorSaez-Madain, Alejandro F.
dc.contributor.authorSassella, Remi
dc.contributor.authorSchellart, Pim
dc.contributor.authorShaw, Paul
dc.contributor.authorSilva, Kevin M.
dc.contributor.authorShiokawa, Hotaka
dc.contributor.authorSmith, David R.
dc.contributor.authorSnow, William
dc.contributor.authorSouccar, Kamal
dc.contributor.authorSousa, Don
dc.contributor.authorSridharan, T. K.
dc.contributor.authorSrinivasan, Ranjani
dc.contributor.authorStahm, William
dc.contributor.authorStark, Antony A.
dc.contributor.authorStory, Kyle
dc.contributor.authorTimmer, Sjoerd T.
dc.contributor.authorVertatschitsch, Laura
dc.contributor.authorWalther, Craig
dc.contributor.authorWei, Ta-Shun
dc.contributor.authorWhitehorn, Nathan
dc.contributor.authorWhitney, Alan R.
dc.contributor.authorWoody, David P.
dc.contributor.authorWouterloot, Jan G. A.
dc.contributor.authorWright, Melvin
dc.contributor.authorYamaguchi, Paul
dc.contributor.authorYu, Chen-Yu
dc.contributor.authorZeballos, Milagros
dc.contributor.authorZhang, Shuo
dc.contributor.authorZiurys, Lucy
dc.date.accessioned2021-04-02T19:51:18Z
dc.date.available2021-04-02T19:51:18Z
dc.date.issued2020-08
dc.identifier.citationKim, J. Y., Krichbaum, T. P., Broderick, A. E., Wielgus, M., Blackburn, L., Gómez, J. L., ... & Plambeck, R. (2020). Event Horizon Telescope imaging of the archetypal blazar 3C 279 at an extreme 20 microarcsecond resolution. Astronomy & Astrophysics, 640, A69.
dc.identifier.issn0004-6361
dc.identifier.doi10.1051/0004-6361/202037493
dc.identifier.urihttp://hdl.handle.net/10150/657387
dc.description.abstract3C 279 is an archetypal blazar with a prominent radio jet that show broadband flux density variability across the entire electromagnetic spectrum. We use an ultra-high angular resolution technique - global Very Long Baseline Interferometry (VLBI) at 1.3 mm (230 GHz) - to resolve the innermost jet of 3C 279 in order to study its fine-scale morphology close to the jet base where highly variable gamma -ray emission is thought to originate, according to various models. The source was observed during four days in April 2017 with the Event Horizon Telescope at 230 GHz, including the phased Atacama Large Millimeter/submillimeter Array (ALMA), at an angular resolution of similar to 20 mu as (at a redshift of z=0.536 this corresponds to similar to 0.13 pc similar to 1700 Schwarzschild radii with a black hole mass M-BH=8x10(8) M-circle dot). Imaging and model-fitting techniques were applied to the data to parameterize the fine-scale source structure and its variation. We find a multicomponent inner jet morphology with the northernmost component elongated perpendicular to the direction of the jet, as imaged at longer wavelengths. The elongated nuclear structure is consistent on all four observing days and across different imaging methods and model-fitting techniques, and therefore appears robust. Owing to its compactness and brightness, we associate the northern nuclear structure as the VLBI "core". This morphology can be interpreted as either a broad resolved jet base or a spatially bent jet. We also find significant day-to-day variations in the closure phases, which appear most pronounced on the triangles with the longest baselines. Our analysis shows that this variation is related to a systematic change of the source structure. Two inner jet components move non-radially at apparent speeds of similar to 15 c and similar to 20 c (similar to 1.3 and similar to 1.7 mu as day(-1), respectively), which more strongly supports the scenario of traveling shocks or instabilities in a bent, possibly rotating jet. The observed apparent speeds are also coincident with the 3C 279 large-scale jet kinematics observed at longer (cm) wavelengths, suggesting no significant jet acceleration between the 1.3 mm core and the outer jet. The intrinsic brightness temperature of the jet components are less than or similar to 10(10) K, a magnitude or more lower than typical values seen at >= 7 mm wavelengths. The low brightness temperature and morphological complexity suggest that the core region of 3C 279 becomes optically thin at short (mm) wavelengths.
dc.language.isoen
dc.publisherEDP SCIENCES S A
dc.rights© J.-Y. Kim et al. 2020. Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectgalaxies: active
dc.subjectgalaxies: jets
dc.subjectgalaxies: individual: 3C 279
dc.subjecttechniques: interferometric
dc.titleEvent Horizon Telescope imaging of the archetypal blazar 3C 279 at an extreme 20 microarcsecond resolution
dc.typeArticle
dc.typetext
dc.identifier.eissn1432-0746
dc.contributor.departmentUniv Arizona, Steward Observ
dc.contributor.departmentUniv Arizona, Dept Astron
dc.contributor.departmentUniv Arizona, Data Sci Inst
dc.identifier.journalASTRONOMY & ASTROPHYSICS
dc.description.noteOpen access article
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
dc.eprint.versionFinal published version
dc.source.journaltitleASTRONOMY & ASTROPHYSICS
refterms.dateFOA2021-04-02T19:51:18Z


Files in this item

Thumbnail
Name:
aa37493-20.pdf
Size:
3.575Mb
Format:
PDF
Description:
Final Published Version

This item appears in the following Collection(s)

Show simple item record

© J.-Y. Kim et al. 2020. Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Except where otherwise noted, this item's license is described as © J.-Y. Kim et al. 2020. Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.