File Download

There are no files associated with this item.

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)
Related Researcher

김재영

Kim, Jae-Young
Read More

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

First Sagittarius A* Event Horizon Telescope Results. VII. Polarization of the Ring

Author(s)
Akiyama, KazunoriAlberdi, AntxonAlef, WalterAlgaba, Juan CarlosAnantua, RichardAsada, KeiichiAzulay, RebeccaBach, UweBaczko, Anne-KathrinBall, DavidBalokovic, MislavBandyopadhyay, BidishaBarrett, JohnBaubock, MichiBenson, Bradford A.Bintley, DanBlackburn, LindyBlundell, RaymondBouman, Katherine L.Bower, Geoffrey C.Boyce, HopeBremer, MichaelBrinkerink, Christiaan D.Brissenden, RogerBritzen, SilkeBroderick, Avery E.Broguiere, DominiqueBronzwaer, ThomasBustamante, SandraByun, Do-YoungCarlstrom, John E.Ceccobello, ChiaraChael, AndrewChan, Chi-KwanChang, Dominic O.Chatterjee, KoushikChatterjee, ShamiChen, Ming-TangChen, YongjunCheng, XiaopengCho, IljeChristian, PierreConroy, Nicholas S.Conway, John E.Cordes, James M.Crawford, Thomas M.Crew, Geoffrey B.Cruz-Osorio, AlejandroCui, YuzhuDahale, RohanDavelaar, JordyDe laurentis, MariafeliciaDeane, RogerDempsey, JessicaDesvignes, GregoryDexter, JasonDhruv, VedantDihingia, Indu K.Doeleman, Sheperd S.Dougal, Sean TaylorDzib, Sergio A.Eatough, Ralph P.Emami, RaziehFalcke, HeinoFarah, JosephFish, Vincent L.Fomalont, EdwardFord, H. AlysonFoschi, MariannaFraga-Encinas, RaquelFreeman, William T.Friberg, PerFromm, Christian M.Fuentes, AntonioGalison, PeterGammie, Charles F.Garcia, RobertoGentaz, OlivierGeorgiev, BorisGoddi, CiriacoGold, RomanGomez-Ruiz, Arturo I.Gomez, Jose L.Gu, MinfengGurwell, MarkHada, KazuhiroHaggard, DarylHaworth, KariHecht, Michael H.Hesper, RonaldHeumann, DirkHo, Luis C.Ho, PaulHonma, MarekiHuang, Chih-Wei L.Huang, LeiHughes, David H.Ikeda, ShiroImpellizzeri, C. M. VioletteInoue, MakotoIssaoun, SaraJames, David J.Jannuzi, Buell T.Janssen, MichaelJeter, BrittonJiang, WuJimenez-Rosales, AlejandraJohnson, Michael D.Jorstad, SvetlanaJoshi, Abhishek V.Jung, TaehyunKarami, MansourKaruppusamy, RameshKawashima, TomohisaKeating, Garrett K.Kettenis, MarkKim, Dong-JinKim, Jae-YoungKim, JongsooKim, JunhanKino, MotokiKoay, Jun YiKocherlakota, PrashantKofuji, YutaroKoch, Patrick M.Koyama, ShokoKramer, CarstenKramer, Joana A.Kramer, MichaelKrichbaum, Thomas P.Kuo, Cheng-YuLa Bella, NoemiLauer, Tod R.Lee, DaeyoungLee, Sang-SungLeung, Po KinLevis, AviadLi, ZhiyuanLico, RoccoLindahl, GregLindqvist, MichaelLisakov, MikhailLiu, JunLiu, KuoLiuzzo, ElisabettaLo, Wen-PingLobanov, Andrei P.Loinard, LaurentLonsdale, Colin J.Lowitz, Amy E.Lu, Ru-SenMacDonald, Nicholas R.Mao, JirongMarchili, NicolaMarkoff, SeraMarrone, Daniel P.Marscher, Alan P.Marti-Vidal, IvanMatsushita, SatokiMatthews, Lynn D.Medeiros, LiaMenten, Karl M.Michalik, DanielMizuno, IzumiMizuno, YosukeMoran, James M.Moriyama, KotaroMoscibrodzka, MonikaMulaudzi, WangaMueller, CorneliaMueller, HendrikMus, AlejandroMusoke, GibwaMyserlis, IoannisNadolski, AndrewNagai, HiroshiNagar, Neil M.Nakamura, MasanoriNarayanan, GopalNatarajan, IniyanNathanail, AntoniosNavarro Fuentes, SantiagoNeilsen, JoeyNeri, RobertoNi, ChunchongNoutsos, AristeidisNowak, Michael A.Oh, JunghwanOkino, HirokiOlivares, HectorOrtiz-Leon, Gisela N.Oyama, TomoakiOzel, FeryalPalumbo, Daniel C. M.Paraschos, Georgios FilipposPark, JonghoParsons, HarrietPatel, NimeshPen, Ue-LiPesce, Dominic W.Pietu, VincentPlambeck, RichardPopStefanija, AleksandarPorth, OliverPoetzl, Felix M.Prather, BenPreciado-Lopez, Jorge A.Psaltis, DimitriosPu, Hung-YiRamakrishnan, VenkatesshRao, RamprasadRawlings, Mark G.Raymond, Alexander W.Rezzolla, LucianoRicarte, AngeloRipperda, BartRoelofs, FreekRogers, AlanRomero-Canizales, CristinaRos, EduardoRoshanineshat, ArashRottmann, HelgeRoy, Alan L.Ruiz, IgnacioRuszczyk, ChetRygl, Kazi L. J.Sanchez, SalvadorSanchez-Arguelles, DavidSanchez-Portal, MiguelSasada, MahitoSatapathy, KaushikSavolainen, TuomasSchloerb, F. PeterSchonfeld, JonathanSchuster, Karl-FriedrichShao, LijingShen, ZhiqiangSmall, DesSohn, Bong WonSooHoo, JasonSalas, Leon David SosapantaSouccar, KamalStanway, Joshua S.Sun, HeTazaki, FumieTetarenko, Alexandra J.Tiede, PaulTilanus, Remo P. J.Titus, MichaelTorne, PabloToscano, TeresaTraianou, EfthaliaTrent, TylerTrippe, SaschaTurk, Matthewvan Bemmel, Ilsevan Langevelde, Huib Janvan Rossum, Daniel R.Vos, JesseWagner, JanWard-Thompson, DerekWardle, JohnWashington, Jasmin E.Weintroub, JonathanWharton, RobertWielgus, MaciekWiik, KajWitzel, GuntherWondrak, Michael F.Wong, George N.Wu, QingwenYadlapalli, NitikaYamaguchi, PaulYfantis, AristomenisYoon, DoosooYoung, AndreYoung, KenYounsi, ZiriYu, WeiYuan, FengYuan, Ye-FeiZensus, J. AntonZhang, ShuoZhao, Guang-YaoZhao, Shan-Shan
Issued Date
2024-04
DOI
10.3847/2041-8213/ad2df0
URI
https://scholarworks.unist.ac.kr/handle/201301/83740
Citation
ASTROPHYSICAL JOURNAL LETTERS, v.964, no.2, pp.L25
Abstract
The Event Horizon Telescope observed the horizon-scale synchrotron emission region around the Galactic center supermassive black hole, Sagittarius A* (Sgr A*), in 2017. These observations revealed a bright, thick ring morphology with a diameter of 51.8 +/- 2.3 mu as and modest azimuthal brightness asymmetry, consistent with the expected appearance of a black hole with mass M approximate to 4 x 10(6)M(circle dot). From these observations, we present the first resolved linear and circular polarimetric images of Sgr A*. The linear polarization images demonstrate that the emission ring is highly polarized, exhibiting a prominent spiral electric vector polarization angle pattern with a peak fractional polarization of similar to 40% in the western portion of the ring. The circular polarization images feature a modestly (similar to 5%-10%) polarized dipole structure along the emission ring, with negative circular polarization in the western region and positive circular polarization in the eastern region, although our methods exhibit stronger disagreement than for linear polarization. We analyze the data using multiple independent imaging and modeling methods, each of which is validated using a standardized suite of synthetic data sets. While the detailed spatial distribution of the linear polarization along the ring remains uncertain owing to the intrinsic variability of the source, the spiraling polarization structure is robust to methodological choices. The degree and orientation of the linear polarization provide stringent constraints for the black hole and its surrounding magnetic fields, which we discuss in an accompanying publication.
Publisher
IOP Publishing Ltd
ISSN
2041-8205
Keyword
SCATTER-BROADENED IMAGENEAR-INFRARED FLARESGALACTIC-CENTERLINEAR-POLARIZATIONACCRETION FLOWCIRCULAR-POLARIZATIONFARADAY-ROTATIONINTRINSIC STRUCTUREMAGNETIC-FIELD STRUCTURESUPERMASSIVE BLACK-HOLE

qrcode

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.