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2021-04-14Zeitschriftenartikel DOI: 10.18452/26482
Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign
dc.contributor.authorAlgaba, J. C.
dc.contributor.authorAnczarski, J.
dc.contributor.authorAsada, K.
dc.contributor.authorBaloković, M.
dc.contributor.authorChandra, S.
dc.contributor.authorCui, Y.-Z.
dc.contributor.authorFalcone, A. D.
dc.contributor.authorGiroletti, M.
dc.contributor.authorGoddi, C.
dc.contributor.authorHada, K.
dc.contributor.authorHaggard, D.
dc.contributor.authorJorstad, S.
dc.contributor.authorKaur, A.
dc.contributor.authorKawashima, T.
dc.contributor.authorKeating, G.
dc.contributor.authorKim, J.-Y.
dc.contributor.authorKino, M.
dc.contributor.authorKomossa, S.
dc.contributor.authorKravchenko, E. V.
dc.contributor.authorKrichbaum, T. P.
dc.contributor.authorLee, S.-S.
dc.contributor.authorLu, R.-S.
dc.contributor.authorLucchini, M.
dc.contributor.authorMarkoff, S.
dc.contributor.authorNeilsen, J.
dc.contributor.authorNowak, M. A.
dc.contributor.authorPark, J.
dc.contributor.authorPrincipe, G.
dc.contributor.authorRamakrishnan, V.
dc.contributor.authorReynolds, M. T.
dc.contributor.authorSasada, M.
dc.contributor.authorSavchenko, S. S.
dc.contributor.authorWilliamson, K. E.
dc.contributor.authorAkiyama, Kazunori
dc.contributor.authorAlberdi, Antxon
dc.contributor.authorAlef, Walter
dc.contributor.authorAnantua, Richard
dc.contributor.authorAzulay, Rebecca
dc.contributor.authorBaczko, Anne-Kathrin
dc.contributor.authorBall, David
dc.contributor.authorBarrett, John
dc.contributor.authorBintley, Dan
dc.contributor.authorBenson, Bradford A.
dc.contributor.authorBlackburn, Lindy
dc.contributor.authorBlundell, Raymond
dc.contributor.authorBoland, Wilfred
dc.contributor.authorBouman, Katherine L.
dc.contributor.authorBower, Geoffrey C.
dc.contributor.authorBoyce, Hope
dc.contributor.authorBremer, Michael
dc.contributor.authorBrinkerink, Christiaan D.
dc.contributor.authorBrissenden, Roger
dc.contributor.authorBritzen, Silke
dc.contributor.authorBroderick, Avery E.
dc.contributor.authorBroguiere, Dominique
dc.contributor.authorBronzwaer, Thomas
dc.contributor.authorByun, Do-Young
dc.contributor.authorCarlstrom, John E.
dc.contributor.authorChael, Andrew
dc.contributor.authorChan, Chi-kwan
dc.contributor.authorChatterjee, Shami
dc.contributor.authorChatterjee, Koushik
dc.contributor.authorChen, Ming-Tang
dc.contributor.authorChen, Yongjun
dc.contributor.authorChesler, Paul M.
dc.contributor.authorCho, Ilje
dc.contributor.authorChristian, Pierre
dc.contributor.authorConway, John E.
dc.contributor.authorCordes, James M.
dc.contributor.authorCrawford, Thomas M.
dc.contributor.authorCrew, Geoffrey B.
dc.contributor.authorCruz-Osorio, Alejandro
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.authorFarah, Joseph
dc.contributor.authorFish, Vincent L.
dc.contributor.authorFomalont, Ed
dc.contributor.authorFord, H. Alyson
dc.contributor.authorFraga-Encinas, Raquel
dc.contributor.authorFriberg, Per
dc.contributor.authorFromm, Christian M.
dc.contributor.authorFuentes, Antonio
dc.contributor.authorGalison, Peter
dc.contributor.authorGammie, Charles F.
dc.contributor.authorGarcía, Roberto
dc.contributor.authorGentaz, Olivier
dc.contributor.authorGeorgiev, Boris
dc.contributor.authorGold, Roman
dc.contributor.authorGómez, José L.
dc.contributor.authorGómez-Ruiz, Arturo I.
dc.contributor.authorGu, Minfeng
dc.contributor.authorGurwell, Mark
dc.contributor.authorHecht, Michael H.
dc.date.accessioned2023-05-05T08:23:35Z
dc.date.available2023-05-05T08:23:35Z
dc.date.issued2021-04-14none
dc.date.updated2022-02-07T18:47:10Z
dc.identifier.issn2041-8205
dc.identifier.urihttp://edoc.hu-berlin.de/18452/27164
dc.description.abstractIn 2017, the Event Horizon Telescope (EHT) Collaboration succeeded in capturing the first direct image of the center of the M87 galaxy. The asymmetric ring morphology and size are consistent with theoretical expectations for a weakly accreting supermassive black hole of mass ∼6.5 × 109 M ⊙. The EHTC also partnered with several international facilities in space and on the ground, to arrange an extensive, quasi-simultaneous multi-wavelength campaign. This Letter presents the results and analysis of this campaign, as well as the multi-wavelength data as a legacy data repository. We captured M87 in a historically low state, and the core flux dominates over HST-1 at high energies, making it possible to combine core flux constraints with the more spatially precise very long baseline interferometry data. We present the most complete simultaneous multi-wavelength spectrum of the active nucleus to date, and discuss the complexity and caveats of combining data from different spatial scales into one broadband spectrum. We apply two heuristic, isotropic leptonic single-zone models to provide insight into the basic source properties, but conclude that a structured jet is necessary to explain M87’s spectrum. We can exclude that the simultaneous γ-ray emission is produced via inverse Compton emission in the same region producing the EHT mm-band emission, and further conclude that the γ-rays can only be produced in the inner jets (inward of HST-1) if there are strongly particle-dominated regions. Direct synchrotron emission from accelerated protons and secondaries cannot yet be excluded.eng
dc.language.isoengnone
dc.publisherHumboldt-Universität zu Berlin
dc.rights(CC BY 3.0) Attribution 3.0 Unportedger
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/
dc.subjectActive galactic nucleieng
dc.subjectRadio coreseng
dc.subjectLow-luminosity active galactic nucleieng
dc.subjectHigh energy astrophysicseng
dc.subjectAstrophysical black holeseng
dc.subjectAccretioneng
dc.subject.ddc520 Astronomie und zugeordnete Wissenschaftennone
dc.subject.ddc530 Physiknone
dc.titleBroadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaignnone
dc.typearticle
dc.identifier.urnurn:nbn:de:kobv:11-110-18452/27164-2
dc.identifier.doihttp://dx.doi.org/10.18452/26482
dc.type.versionpublishedVersionnone
local.edoc.pages43none
local.edoc.type-nameZeitschriftenartikel
local.edoc.container-typeperiodical
local.edoc.container-type-nameZeitschrift
dc.description.versionPeer Reviewednone
dc.identifier.eissn2041-8213
dcterms.bibliographicCitation.doi10.3847/2041-8213/abef71none
dcterms.bibliographicCitation.journaltitleThe astrophysical journalnone
dcterms.bibliographicCitation.volume911none
dcterms.bibliographicCitation.issue1none
dcterms.bibliographicCitation.articlenumberL11none
dcterms.bibliographicCitation.originalpublishernameInstitute of Physics Publ.none
dcterms.bibliographicCitation.originalpublisherplaceLondonnone
bua.departmentMathematisch-Naturwissenschaftliche Fakultätnone

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