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http://hdl.handle.net/20.500.12386/27716
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dc.contributor.author | H. E. S. S. Collaboration | en_US |
dc.contributor.author | Abdalla, H. | en_US |
dc.contributor.author | Aharonian, F. | en_US |
dc.contributor.author | Ait Benkhali, F. | en_US |
dc.contributor.author | Angüner, E. O. | en_US |
dc.contributor.author | Arakawa, M. | en_US |
dc.contributor.author | Arcaro, C. | en_US |
dc.contributor.author | Armand, C. | en_US |
dc.contributor.author | Arrieta, M. | en_US |
dc.contributor.author | Backes, M. | en_US |
dc.contributor.author | Barnard, M. | en_US |
dc.contributor.author | Becherini, Y. | en_US |
dc.contributor.author | Becker Tjus, J. | en_US |
dc.contributor.author | Berge, D. | en_US |
dc.contributor.author | Bernhard, S. | en_US |
dc.contributor.author | Bernlöhr, K. | en_US |
dc.contributor.author | Blackwell, R. | en_US |
dc.contributor.author | Böttcher, M. | en_US |
dc.contributor.author | Boisson, C. | en_US |
dc.contributor.author | Bolmont, J. | en_US |
dc.contributor.author | Bonnefoy, S. | en_US |
dc.contributor.author | Bordas, P. | en_US |
dc.contributor.author | Bregeon, J. | en_US |
dc.contributor.author | Brun, F. | en_US |
dc.contributor.author | Brun, P. | en_US |
dc.contributor.author | Bryan, M. | en_US |
dc.contributor.author | Büchele, M. | en_US |
dc.contributor.author | Bulik, T. | en_US |
dc.contributor.author | Bylund, T. | en_US |
dc.contributor.author | Capasso, M. | en_US |
dc.contributor.author | Caroff, S. | en_US |
dc.contributor.author | Carosi, A. | en_US |
dc.contributor.author | Casanova, S. | en_US |
dc.contributor.author | Cerruti, M. | en_US |
dc.contributor.author | Chakraborty, N. | en_US |
dc.contributor.author | Chandra, S. | en_US |
dc.contributor.author | Chaves, R. C. G. | en_US |
dc.contributor.author | Chen, A. | en_US |
dc.contributor.author | Colafrancesco, S. | en_US |
dc.contributor.author | Condon, B. | en_US |
dc.contributor.author | Davids, I. D. | en_US |
dc.contributor.author | Deil, C. | en_US |
dc.contributor.author | Devin, J. | en_US |
dc.contributor.author | deWilt, P. | en_US |
dc.contributor.author | Dirson, L. | en_US |
dc.contributor.author | Djannati-Ataï, A. | en_US |
dc.contributor.author | Dmytriiev, A. | en_US |
dc.contributor.author | Donath, A. | en_US |
dc.contributor.author | Drury, L. O. 'C. | en_US |
dc.contributor.author | Dyks, J. | en_US |
dc.contributor.author | Egberts, K. | en_US |
dc.contributor.author | Emery, G. | en_US |
dc.contributor.author | Ernenwein, J. -P. | en_US |
dc.contributor.author | Eschbach, S. | en_US |
dc.contributor.author | Fegan, S. | en_US |
dc.contributor.author | Fiasson, A. | en_US |
dc.contributor.author | Fontaine, G. | en_US |
dc.contributor.author | Funk, S. | en_US |
dc.contributor.author | Füßling, M. | en_US |
dc.contributor.author | Gabici, S. | en_US |
dc.contributor.author | Gallant, Y. A. | en_US |
dc.contributor.author | Garrigoux, T. | en_US |
dc.contributor.author | Gaté, F. | en_US |
dc.contributor.author | Giavitto, G. | en_US |
dc.contributor.author | Glawion, D. | en_US |
dc.contributor.author | Glicenstein, J. F. | en_US |
dc.contributor.author | Gottschall, D. | en_US |
dc.contributor.author | Grondin, M. -H. | en_US |
dc.contributor.author | Hahn, J. | en_US |
dc.contributor.author | Haupt, M. | en_US |
dc.contributor.author | Heinzelmann, G. | en_US |
dc.contributor.author | Henri, G. | en_US |
dc.contributor.author | Hermann, G. | en_US |
dc.contributor.author | Hinton, J. A. | en_US |
dc.contributor.author | Hofmann, W. | en_US |
dc.contributor.author | Hoischen, C. | en_US |
dc.contributor.author | Holch, T. L. | en_US |
dc.contributor.author | Holler, M. | en_US |
dc.contributor.author | Horns, D. | en_US |
dc.contributor.author | Huber, D. | en_US |
dc.contributor.author | Iwasaki, H. | en_US |
dc.contributor.author | Jacholkowska, A. | en_US |
dc.contributor.author | Jamrozy, M. | en_US |
dc.contributor.author | Jankowsky, D. | en_US |
dc.contributor.author | Jankowsky, F. | en_US |
dc.contributor.author | Jouvin, L. | en_US |
dc.contributor.author | Jung-Richardt, I. | en_US |
dc.contributor.author | Kastendieck, M. A. | en_US |
dc.contributor.author | Kataŕnski, K. | en_US |
dc.contributor.author | Katsuragawa, M. | en_US |
dc.contributor.author | Katz, U. | en_US |
dc.contributor.author | Kerszberg, D. | en_US |
dc.contributor.author | Khangulyan, D. | en_US |
dc.contributor.author | Khélifi, B. | en_US |
dc.contributor.author | King, J. | en_US |
dc.contributor.author | Klepser, S. | en_US |
dc.contributor.author | Ḱzniak, W. | en_US |
dc.contributor.author | Komin, Nu. | en_US |
dc.contributor.author | Kosack, K. | en_US |
dc.contributor.author | Krakau, S. | en_US |
dc.contributor.author | Kraus, M. | en_US |
dc.contributor.author | Krüger, P. P. | en_US |
dc.contributor.author | Lamanna, G. | en_US |
dc.contributor.author | Lau, J. | en_US |
dc.contributor.author | Lefaucheur, J. | en_US |
dc.contributor.author | Lemière, A. | en_US |
dc.contributor.author | Lemoine-Goumard, M. | en_US |
dc.contributor.author | Lenain, J. -P. | en_US |
dc.contributor.author | Leser, E. | en_US |
dc.contributor.author | Lohse, T. | en_US |
dc.contributor.author | Lorentz, M. | en_US |
dc.contributor.author | López-Coto, R. | en_US |
dc.contributor.author | Lypova, I. | en_US |
dc.contributor.author | Malyshev, D. | en_US |
dc.contributor.author | Marandon, V. | en_US |
dc.contributor.author | Marcowith, A. | en_US |
dc.contributor.author | Mariaud, C. | en_US |
dc.contributor.author | Martí-Devesa, G. | en_US |
dc.contributor.author | Marx, R. | en_US |
dc.contributor.author | Maurin, G. | en_US |
dc.contributor.author | Meintjes, P. J. | en_US |
dc.contributor.author | Mitchell, A. M. W. | en_US |
dc.contributor.author | Moderski, R. | en_US |
dc.contributor.author | Mohamed, M. | en_US |
dc.contributor.author | Mohrmann, L. | en_US |
dc.contributor.author | Moulin, E. | en_US |
dc.contributor.author | Murach, T. | en_US |
dc.contributor.author | Nakashima, S. | en_US |
dc.contributor.author | de Naurois, M. | en_US |
dc.contributor.author | Ndiyavala, H. | en_US |
dc.contributor.author | Niederwanger, F. | en_US |
dc.contributor.author | Niemiec, J. | en_US |
dc.contributor.author | Oakes, L. | en_US |
dc.contributor.author | O'Brien, P. | en_US |
dc.contributor.author | Odaka, H. | en_US |
dc.contributor.author | Ohm, S. | en_US |
dc.contributor.author | Ostrowski, M. | en_US |
dc.contributor.author | Oya, I. | en_US |
dc.contributor.author | Padovani, Marco | en_US |
dc.contributor.author | Panter, M. | en_US |
dc.contributor.author | Parsons, R. D. | en_US |
dc.contributor.author | Perennes, C. | en_US |
dc.contributor.author | Petrucci, P. -O. | en_US |
dc.contributor.author | Peyaud, B. | en_US |
dc.contributor.author | Piel, Q. | en_US |
dc.contributor.author | Pita, S. | en_US |
dc.contributor.author | Poireau, V. | en_US |
dc.contributor.author | Priyana Noel, A. | en_US |
dc.contributor.author | Prokhorov, D. A. | en_US |
dc.contributor.author | Prokoph, H. | en_US |
dc.contributor.author | Pühlhofer, G. | en_US |
dc.contributor.author | Punch, M. | en_US |
dc.contributor.author | Quirrenbach, A. | en_US |
dc.contributor.author | Raab, S. | en_US |
dc.contributor.author | Rauth, R. | en_US |
dc.contributor.author | Reimer, A. | en_US |
dc.contributor.author | Reimer, O. | en_US |
dc.contributor.author | Renaud, M. | en_US |
dc.contributor.author | Rieger, F. | en_US |
dc.contributor.author | Rinchiuso, L. | en_US |
dc.contributor.author | Romoli, C. | en_US |
dc.contributor.author | Rowell, G. | en_US |
dc.contributor.author | Rudak, B. | en_US |
dc.contributor.author | Ruiz-Velasco, E. | en_US |
dc.contributor.author | Sahakian, V. | en_US |
dc.contributor.author | Saito, S. | en_US |
dc.contributor.author | Sanchez, D. A. | en_US |
dc.contributor.author | Santangelo, A. | en_US |
dc.contributor.author | Sasaki, M. | en_US |
dc.contributor.author | Schlickeiser, R. | en_US |
dc.contributor.author | Schüssler, F. | en_US |
dc.contributor.author | Schulz, A. | en_US |
dc.contributor.author | Schwanke, U. | en_US |
dc.contributor.author | Schwemmer, S. | en_US |
dc.contributor.author | Seglar-Arroyo, M. | en_US |
dc.contributor.author | Senniappan, M. | en_US |
dc.contributor.author | Seyffert, A. S. | en_US |
dc.contributor.author | Shafi, N. | en_US |
dc.contributor.author | Shilon, I. | en_US |
dc.contributor.author | Shiningayamwe, K. | en_US |
dc.contributor.author | Simoni, R. | en_US |
dc.contributor.author | Sinha, A. | en_US |
dc.contributor.author | Sol, H. | en_US |
dc.contributor.author | Spanier, F. | en_US |
dc.contributor.author | Specovius, A. | en_US |
dc.contributor.author | Spir-Jacob, M. | en_US |
dc.contributor.author | Stawarz, Ł. | en_US |
dc.contributor.author | Steenkamp, R. | en_US |
dc.contributor.author | Stegmann, C. | en_US |
dc.contributor.author | Steppa, C. | en_US |
dc.contributor.author | Sushch, I. | en_US |
dc.contributor.author | Takahashi, T. | en_US |
dc.contributor.author | Tavernet, J. -P. | en_US |
dc.contributor.author | Tavernier, T. | en_US |
dc.contributor.author | Taylor, A. M. | en_US |
dc.contributor.author | Terrier, R. | en_US |
dc.contributor.author | Tibaldo, L. | en_US |
dc.contributor.author | Tiziani, D. | en_US |
dc.contributor.author | Tluczykont, M. | en_US |
dc.contributor.author | Trichard, C. | en_US |
dc.contributor.author | Tsirou, M. | en_US |
dc.contributor.author | Tsuji, N. | en_US |
dc.contributor.author | Tuffs, R. | en_US |
dc.contributor.author | Uchiyama, Y. | en_US |
dc.contributor.author | van der Walt, D. J. | en_US |
dc.contributor.author | van Eldik, C. | en_US |
dc.contributor.author | van Rensburg, C. | en_US |
dc.contributor.author | van Soelen, B. | en_US |
dc.contributor.author | Vasileiadis, G. | en_US |
dc.contributor.author | Veh, J. | en_US |
dc.contributor.author | Venter, C. | en_US |
dc.contributor.author | Viana, A. | en_US |
dc.contributor.author | Vincent, P. | en_US |
dc.contributor.author | Vink, J. | en_US |
dc.contributor.author | Voisin, F. | en_US |
dc.contributor.author | Völk, H. J. | en_US |
dc.contributor.author | Vuillaume, T. | en_US |
dc.contributor.author | Wadiasingh, Z. | en_US |
dc.contributor.author | Wagner, S. J. | en_US |
dc.contributor.author | Wagner, P. | en_US |
dc.contributor.author | Wagner, R. M. | en_US |
dc.contributor.author | White, R. | en_US |
dc.contributor.author | Wierzcholska, A. | en_US |
dc.contributor.author | Wörnlein, A. | en_US |
dc.contributor.author | Yang, R. | en_US |
dc.contributor.author | Zaborov, D. | en_US |
dc.contributor.author | Zacharias, M. | en_US |
dc.contributor.author | Zanin, R. | en_US |
dc.contributor.author | Zdziarski, A. A. | en_US |
dc.contributor.author | Zech, A. | en_US |
dc.contributor.author | Zefi, F. | en_US |
dc.contributor.author | Ziegler, A. | en_US |
dc.contributor.author | Zorn, J. | en_US |
dc.contributor.author | Żywucka, N. | en_US |
dc.date.accessioned | 2020-10-12T12:40:41Z | - |
dc.date.available | 2020-10-12T12:40:41Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/27716 | - |
dc.description.abstract | Context. NGC 253 is one of only two starburst galaxies found to emit γ-rays from hundreds of MeV to multi-TeV energies. Accurate measurements of the very-high-energy (VHE; E > 100 GeV) and high-energy (HE; E > 60 MeV) spectra are crucial to study the underlying particle accelerators, probe the dominant emission mechanism(s) and to study cosmic-ray interaction and transport. <BR /> Aims: The measurement of the VHE γ-ray emission of NGC 253 published in 2012 by H.E.S.S. was limited by large systematic uncertainties. Here, the most up to date measurement of the γ-ray spectrum of NGC 253 is investigated in both HE and VHE γ-rays. Assuming a hadronic origin of the γ-ray emission, the measurement uncertainties are propagated into the interpretation of the accelerated particle population. <BR /> Methods: The data of H.E.S.S. observations are reanalysed using an updated calibration and analysis chain. The improved Fermi-LAT analysis employs more than 8 yr of data processed using pass 8. The cosmic-ray particle population is evaluated from the combined HE-VHE γ-ray spectrum using NAIMA in the optically thin case. <BR /> Results: The VHE γ-ray energy spectrum is best fit by a power-law distribution with a flux normalisation of (1.34 ± 0.14<SUP>stat</SUP> ± 0.27<SUP>sys</SUP>) × 10<SUP>-13</SUP> cm<SUP>-2</SUP> s<SUP>-1</SUP> TeV<SUP>1</SUP> at 1 TeV - about 40% above, but compatible with the value obtained in Abramowski et al. (2012). The spectral index Γ = 2.39 ± 0.14<SUP>stat</SUP> ± 0.25<SUP>sys</SUP> is slightly softer than but consistent with the previous measurement within systematic errors. In the Fermi energy range an integral flux of F(E > 60 MeV) = (1.56 ± 0.28<SUP>stat</SUP> ± 0.15<SUP>sys</SUP>) × 10<SUP>-8</SUP> cm<SUP>-2</SUP> s<SUP>-1</SUP> is obtained. At energies above ∼3 GeV the HE spectrum is consistent with a power-law ranging into the VHE part of the spectrum measured by H.E.S.S. with an overall spectral index Γ = 2.22 ± 0.06<SUP>stat</SUP>. <BR /> Conclusions: Two scenarios for the starburst nucleus are tested, in which the gas in the starburst nucleus acts as either a thin or a thick target for hadronic cosmic rays accelerated by the individual sources in the nucleus. In these two models, the level to which NGC 253 acts as a calorimeter is estimated to a range of f<SUB>cal</SUB> = 0.1 to 1 while accounting for the measurement uncertainties. The presented spectrum is likely to remain the most accurate measurements until the Cherenkov Telescope Array (CTA) has collected a substantial set of data towards NGC 253. | en_US |
dc.language.iso | eng | en_US |
dc.title | The starburst galaxy NGC 253 revisited by H.E.S.S. and Fermi-LAT | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201833202 | en_US |
dc.identifier.scopus | 2-s2.0-85054201459 | en_US |
dc.identifier.isi | 000445045400001 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/abs/2018/09/aa33202-18/aa33202-18.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 617 | en_US |
dc.relation.firstpage | A73 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | ASTRONOMY & ASTROPHYSICS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2018A&A...617A..73H | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_6 Stars and stellar systems | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.orcid | 0000-0003-2303-0096 | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
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