Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/41332
Title: Measurement of the EBL spectral energy distribution using the VHE gamma-ray spectra of HESS blazars
Authors: Abdalla, H
Abramowski, A
Aharonian, F
Benkhali, F. A.
Akhperjanian, A. G.
Andersson, T
Anguner, E. O.
Arakawa, M
Arrieta, M
Aubert, P
Backes, M
Balzer, A
Barnard, M
Becherini, Y
Tjus, J. B.
Berge, D
Bernhard, S
Bernloehr, K
Blackwell, R
Bottcher, M
Boisson, C
Bolmont, J
Bonnefoy, S
Bordas, P
Bregeon, J
Brun, F
Brun, P
Bryan, M
Buechele, M
Bulik, T
Capasso, M
Carr, J
Casanova, S
Cerruti, M
Chakraborty, N
Chaves, R. C. G.
Chen, A
Chevalier, J
Coffaro, M
Colafrancesco, S
Cologna, G
Condon, B
Conrad, J
Cui, Y
Davids, I. D.
Decock, J
Degrange, B
Deil, C
Devin, J
de Wilt, P
Dirson, L
Djannati-Atai, A
Domainko, W
Donath, A
Drury, L. O.
Dutson, K
Dyks, J
Edwards, T
Egberts, K
Eger, P
Ernenwein, J. -P.
Eschbach, S
Farnier, C
Fegan, S
Fernandes, M. V.
Fiasson, A
Fontaine, G
Foerster, A
Funk, S
Fuessling, M
Gabici, S
Gallant, Y. A.
Garrigoux, T
Giavitto, G
Giebels, B
Glicenstein, J. F.
Gottschall, D
Goyal, A
Grondin, M. -H.
Hahn, J
Haupt, M
Hawkes, J
Heinzelmann, G
Henri, G
Hermann, G
Hinton, J. A.
Hofmann, W
Hoischen, C
Holch, T. L.
Holler, M
Horns, D
Ivascenko, A
Iwasaki, H
Jacholkowska, A
Jamrozy, M
Janiak, M
Jankowsky, D
Jankowsky, F
Jingo, M
Jogler, T
Jouvin, L
Jung-Richardt, I
Kastendieck, MA
Katarzynski, K
Katsuragawa, M
Katz, U
Kerszberg, D
Khangulyan, D
Khelifi, B
King, J
Klepser, S
Klochkov, D
Kluzniak, W
Kolitzus, D
Komin, N
Kosack, K
Krakau, S
Kraus, M
Kruger, P. P.
Laffon, H
Lamanna, G
Lau, J
Lees, J. -P.
Lefaucheur, J
Lefranc, V
Lemiere, A
Lemoine-Goumard, M
Lenain, J. -P.
Leser, E
Lohse, T
Lorentz, M
Liu, R
Lopez-Coto, R
Lypova, I
Marandon, V
Marcowith, A
Mariaud, C
Marx, R
Maurin, G
Maxted, N
Mayer, M
Meintjes, P. J.
Meyer, M
Mitchell, A. M. W.
Moderski, R
Mohamed, M
Mohrmann, L
Mora, K
Moulin, E
Murach, T
Nakashima, S
de Naurois, M
Niederwanger, F
Niemiec, J
Oakes, L
O'Brien, P
Odaka, H
Ohm, S
Ostrowski, M
Oya, I
Padovani, M
Panter, M
Parsons, R. D.
Pekeur, N. W.
Pelletier, G
Perennes, C
Petrucci, P-O
Peyaud, B
Piel, Q
Pita, S
Poon, H
Prokhorov, D
Prokoph, H
Puehlhofer, G
Punch, M
Quirrenbach, A
Raab, S
Rauth, R
Reimer, A
Reimer, O
Renaud, M
de los Reyes, R
Richter, S
Rieger, F
Romoli, C
Rowell, G
Rudak, B
Rulten, C. B.
Sahakian, V
Saito, S
Salek, D
Sanchez, D. A.
Santangelo, A
Sasaki, M
Schlickeiser, R
Schussler, F
Schulz, A
Schwanke, U
Schwemmer, S
Seglar-Arroyo, M
Settimo, M
Seyffert, A. S.
Shafi, N
Shilon, I
Simoni, R
Sol, H
Spanier, F
Spengler, G
Spies, F
Stawarz, L
Steenkamp, R
Stegmann, C
Stycz, K
Sushch, I
Takahashi, T
Tavernet, J. -P.
Tavernier, T
Taylor, A. M.
Terrier, R
Tibaldo, L
Tiziani, D
Tluczykont, M
Trichard, C
Tsuji, N
Tuffs, R
Uchiyama, Y
van der Walt, D. J.
van Eldik, C
van Rensburg, C
van Soelen, B
Vasileiadis, G
Veh, J
Venter, C
Viana, A
Vincent, P
Vink, J
Voisin, F
Voelk, HJ
Vuillaume, T
Wadiasingh, Z
Wagner, S. J.
Wagner, P
Wagner, RM
White, R
Wierzcholska, A
Willmann, P
Woernlein, A
Wouters, D
Yang, R
Zaborov, D
Zacharias, M
Zanin, R
Zdziarski, A. A.
Zech, A
Zefi, F
Ziegler, A
Zywucka, N
First Published: 10-Oct-2017
Publisher: EDP Sciences
Citation: Astronomy and Astrophysics, 2017, 606, A59, p 11
Abstract: Very high-energy γ-rays (VHE, E & 100 GeV) propagating over cosmological distances can interact with the low-energy photons of the extragalactic background light (EBL) and produce electron-positron pairs. The transparency of the universe to VHE γ-rays is then directly related to the spectral energy distribution (SED) of the EBL. The observation of features in the VHE energy spectra of extragalactic sources allows the EBL to be measured, which otherwise is very difficult to determine. An EBL-model independent measurement of the EBL SED with the H.E.S.S. array of Cherenkov telescopes is presented. It is obtained by extracting the EBL absorption signal from the reanalysis of high-quality spectra of blazars. From H.E.S.S. data alone the EBL signature is detected at a significance of 9.5σ, and the intensity of the EBL obtained in different spectral bands is presented together with the associated γ-ray horizon
DOI Link: 10.1051/0004-6361/201731200
ISSN: 0004-6361
eISSN: 1432-0746
Links: https://www.aanda.org/articles/aa/abs/2017/10/aa31200-17/aa31200-17.html
http://hdl.handle.net/2381/41332
Version: Post-print
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2017, EDP Sciences. Deposited with reference to the publisher’s open access archiving policy. (http://www.rioxx.net/licenses/all-rights-reserved)
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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