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Verfasst von:Abdalla, Hassan [VerfasserIn]   i
 Aharonian, Felix A. [VerfasserIn]   i
 Bernlöhr, Konrad [VerfasserIn]   i
 Eisenacher Glawion, Dorit [VerfasserIn]   i
 Hinton, James Anthony [VerfasserIn]   i
 Hofmann, Wilfried [VerfasserIn]   i
 Jankowsky, Felix [VerfasserIn]   i
 King, Johannes [VerfasserIn]   i
 Lenain, Jean-Philippe [VerfasserIn]   i
 Marx, Ramin [VerfasserIn]   i
 Mohamed, Mahmoud [VerfasserIn]   i
 Pühlhofer, Gerd [VerfasserIn]   i
 Quirrenbach, Andreas [VerfasserIn]   i
 Rieger, Frank M. [VerfasserIn]   i
 Schwemmer, Stephanie [VerfasserIn]   i
 Völk, Heinrich J. [VerfasserIn]   i
 Wagner, Stefan [VerfasserIn]   i
 Wierzcholska, Alicja [VerfasserIn]   i
Titel:Resolving acceleration to very high energies along the jet of Centaurus A
Körperschaft:H.E.S.S. Collaboration [VerfasserIn]   i
Verf.angabe:the H.E.S.S. Collaboration
E-Jahr:2020
Jahr:17 June 2020
Umfang:11 S.
Teil:volume:582
 year:2020
 number:7812
 pages:356-366
 extent:11
Fussnoten:Gesehen am 28.04.2021 ; The H.E.S.S. Collaboration: H. Abdalla, R. Adam, F. Aharonian, F. Ait Benkhali, E.O. Anguner, M. Arakawa, C. Arcaro, C. Armand, H. Ashkar, M. Backes, V. Barbosa Martins, M. Barnard, Y. Becherini, D. Berge, K. Bernloehr, R. Blackwell, M. Bottcher, C. Boisson, J. Bolmont, S. Bonnefoy, J. Bregeon, M. Breuhaus, F. Brun, P. Brun, M. Bryan, M. Buechele, T. Bulik, T. Bylund, M. Capasso, S. Caroff, A. Carosi, S. Casanova, M. Cerruti, T. Chand, S. Chandra, A. Chen, S. Colafrancesco, M. Curylo, I.D. Davids, C. Deil, J. Devin, P. DeWilt, L. Dirson, A. Djannati-Atai, A. Dmytriiev, A. Donath, V. Doroshenko, L. O'c Drury, J. Dyks, K. Egberts, G. Emery, J.-P. Ernenwein, S. Eschbach, K. Feijen, S. Fegan, A. Fiasson, G. Fontaine, S. Funk, M. Fuessling, S. Gabici, Y.A. Gallant, F. Gate, G. Giavitto, D. Glawion, J.F. Glicenstein, D. Gottschall, M.-H. Grondin, J. Hahn, M. Haupt, G. Heinzelmann, G. Henri, G. Hermann, J. A. Hinton, W. Hofmann, C. Hoischen, T.L. Holch, M. Holler, D. Horns, D. Huber, H. Iwasaki, M. Jamrozy, D. Jankowsky, F. Jankowsky, A. Jardin-Blicq, I. Jung-Richardt, M.A. Kastendieck, K. Katarzynski, M. Katsuragawa, U. Katz, D. Khangulyan, B. Khelifi, J. King, S. Klepser, W. Kluzniak, N. Komin, K. Kosack, D. Kostunin, M. Kraus, G. Lamanna, J. Lau, A. Lemiere, M. Lemoine-Goumard, J.-P. Lenain, E. Leser, C. Levy, T. Lohse, I. Lypova, J. Mackey, J. Majumdar, D. Malyshev, V. Marandon, A. Marcowith, A. Mares, C. Mariaud, G. Marti-Devesa, R. Marx, G. Maurin, P.J. Meintjes, A.M.W. Mitchell, R. Moderski, M. Mohamed, L. Mohrmann, C. Moore, E. Moulin, J. Muller, T. Murach, S. Nakashima, M. de Naurois, H. Ndiyavala, F. Niederwanger, J. Niemiec, L. Oakes, P. O'Brien, H. Odaka, S. Ohm, E. de Ona Wilhelmi, M. Ostrowski, I. Oya, M. Panter, R.D. Parsons, C. Perennes, P.-O. Petrucci, B. Peyaud, Q. Piel, S. Pita, V. Poireau, A. Priyana Noel, D. A. Prokhorov, H. Prokoph, G. Puehlhofer, M. Punch, A. Quirrenbach, S. Raab, R. Rauth, A. Reimer, O. Reimer, Q. Remy, M. Renaud, F. Rieger, L. Rinchiuso, C. Romoli, G. Rowell, B. Rudak, E. Ruiz-Velasco, V. Sahakian, S. Saito, D.A. Sanchez, A. Santangelo, M. Sasaki, R. Schlickeiser, F. Schussler, A. Schulz, H.M. Schutte, U. Schwanke, S. Schwemmer, M. Seglar-Arroyo, M. Senniappan, A.S. Seyffert, N. Shafi, K. Shiningayamwe, R. Simoni, A. Sinha, H. Sol, A. Specovius, M. Spir-Jacob, L. Stawarz, R. Steenkamp, C. Stegmann, C. Steppa, T. Takahashi, T. Tavernier, A.M. Taylor, R. Terrier, D. Tiziani, M. Tluczykont, C. Trichard, M. Tsirou, N. Tsuji, R. Tuffs, Y. Uchiyama, D.J. van der Walt, C. van Eldik, C. van Rensburg, B. van Soelen, G. Vasileiadis, J. Veh, C. Venter, P. Vincent, J. Vink, F. Voisin, H.J. Voelk, T. Vuillaume, Z. Wadiasingh, S.J. Wagner, R. White, A. Wierzcholska, R. Yang, H. Yoneda, M. Zacharias, R. Zanin, A.A. Zdziarski, A. Zech, A. Ziegler, J. Zorn, N. Zywucka
Titel Quelle:Enthalten in: Nature <London>
Ort Quelle:London [u.a.] : Nature Publ. Group, 1869
Jahr Quelle:2020
Band/Heft Quelle:582(2020), 7812, Seite 356-366
ISSN Quelle:1476-4687
Abstract:The nearby radio galaxy Centaurus A belongs to a class of active galaxies that are luminous at radio wavelengths. Most show collimated relativistic outflows known as jets, which extend over hundreds of thousands of parsecs for the most powerful sources. Accretion of matter onto the central supermassive black hole is believed to fuel these jets and power their emission(1). Synchrotron radiation from relativistic electrons causes the radio emission, and it has been suggested that the X-ray emission from Centaurus A also originates in electron synchrotron processes(2-4). Another possible explanation is inverse Compton scattering with cosmic microwave background (CMB) soft photons(5-7). Synchrotron radiation needs ultrarelativistic electrons (about 50 teraelectronvolts) and, given their short cooling times, requires some continuous re-acceleration mechanism(8). Inverse Compton scattering, on the other hand, does not require very energetic electrons, but the jets must stay highly relativistic on large scales (exceeding 1 megaparsec). Some recent evidence disfavours inverse Compton-CMB models(9-12), although other work seems to be compatible with them(13,14). In principle, the detection of extended gamma-ray emission, which directly probes the presence of ultrarelativistic electrons, could distinguish between these options. At gigaelectronvolt energies there is also an unusual spectral hardening(15,16)in Centaurus A that has not yet been explained. Here we report observations of Centaurus A at teraelectronvolt energies that resolve its large-scale jet. We interpret the data as evidence for the acceleration of ultrarelativistic electrons in the jet, and favour the synchrotron explanation for the X-rays. Given that this jet is not exceptional in terms of power, length or speed, it is possible that ultrarelativistic electrons are commonplace in the large-scale jets of radio-loud active galaxies. Observations of the radio galaxy Centaurus A at teraelectronvolt energies resolve its large-scale jet and favour electron synchrotron processes as the source of its X-ray emission.
DOI:doi:10.1038/s41586-020-2354-1
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext: https://doi.org/10.1038/s41586-020-2354-1
 DOI: https://doi.org/10.1038/s41586-020-2354-1
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:a clues
 electrons
 gamma-ray emission
 radio
 scale jets
K10plus-PPN:1756275815
Verknüpfungen:→ Zeitung

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