Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S.

Abramowski A, Acero F, Aharonian F, Akhperjanian AG, Anton G, Balenderan S, Balzer A, Barnacka A, Becherini Y, Tjus JB, Bernloehr K, Birsin E, Biteau J, Bochow A, Boisson C, Bolmont J, Bordas P, Brucker J, Brun F, Brun P, Bulik T, Carrigan S, Casanova S, Cerruti M, Chadwick PM, Charbonnier A, Chaves RCG, Cheesebrough A, Cologna G, Conrad J, Couturier C, Dalton M, Daniel MK, Davids ID, Degrange B, Deil C, Dewilt P, Dickinson HJ, Djannati-Atai A, Domainko W, Drury LO, Dubus G, Dutson K, Dyks J, Dyrda M, Egberts K, Eger P, Espigat P, Fallon L, Farnier C, Fegan S, Feinstein F, Fernandes MV, Fernandez D, Fiasson A, Fontaine G, Foerster A, Fuessling M, Gajdus M, Gallant YA, Garrigoux T, Gast H, Giebels B, Glicenstein JF, Glueck B, Göring D, Grondin MH, Häffner S, Hague JD, Hahn J, Hampf D, Harris J, Heinz S, Heinzelmann G, Henri G, Hermann G, Hillert A, Hinton JA, Hofmann W, Hofverberg P, Holler M, Horns D, Jacholkowska A, Jahn C, Jamrozy M, Jung I, Kastendieck MA, Katarzynski K, Katz U, Kaufmann S, Khelifi B, Klochkov D, Kluzniak W, Kneiske TM, Komin N, Kosack K, Kossakowski R, Krayzel F, Laffon H, Lamanna G, Lenain JP, Lennarz D, Lohse T, Lopatin A, Lu CC, Marandon V, Marcowith A, Masbou J, Maurin G, Maxted N, Mayer M, Mccomb TJL, Medina MC, Mehault J, Menzler U, Moderski R, Mohamed M, Moulin E, Naumann CL, Naumann-Godo M, De Naurois M, Nedbal D, Nguyen N, Niemiec J, Nolan SJ, Ohm S, Wilhelmi EDO, Opitz B, Ostrowski M, Oya I, Panter M, Parsons D, Arribas MP, Pekeur NW, Pelletier G, Perez J, Petrucci PO, Peyaud B, Pita S, Puehlhofer G, Punch M, Quirrenbach A, Raue M, Reimer A, Reimer O, Renaud M, De Los Reyes R, Rieger F, Ripken J, Rob L, Rosier-Lees S, Rowell G, Rudak B, Rulten CB, Sahakian V, Sanchez DA, Santangelo A, Schlickeiser R, Schulz A, Schwanke U, Schwarzburg S, Schwemmer S, Sheidaei F, Skilton JL, Sol H, Spengler G, Stawarz L, Steenkamp R, Stegmann C, Stinzing F, Stycz K, Sushch I, Szostek A, Tavernet JP, Terrier R, Tluczykont M, Valerius K, van Eldik C, Vasileiadis G, Venter C, Viana A, Vincent P, Voelk HJ, Volpe F, Vorobiov S, Vorster M, Wagner SJ, Ward M, White R, Wierzcholska A, Wouters D, Zacharias M, Zajczyk A, Zdziarski AA, Zech A, Zechlin HS (2013)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2013

Journal

Publisher: EDP Sciences

Book Volume: 550

Article Number: A4

DOI: 10.1051/0004-6361/201220355

Abstract

The extragalactic background light (EBL) is the diffuse radiation with the second highest energy density in the Universe after the cosmic microwave background. The aim of this study is the measurement of the imprint of the EBL opacity to γ-rays on the spectra of the brightest extragalactic sources detected with the High Energy Stereoscopic System (H.E.S.S.). The originality of the method lies in the joint fit of the EBL optical depth and of the intrinsic spectra of the sources, assuming intrinsic smoothness. Analysis of a total of ∼10γ-ray events enables the detection of an EBL signature at the 8.8σ level and constitutes the first measurement of the EBL optical depth using very-high energy (E > 100 GeV) γ-rays. The EBL flux density is constrained over almost two decades of wavelengths [0.30 μm, 17 μm] and the peak value at 1.4 μm is derived as λF = 15 ± 2 ± 3 nW m sr. © 2013 ESO.

Authors with CRIS profile

Involved external institutions

Universität Hamburg (UHH) Germany (DE) University of Montpellier / Université Montpellier France (FR) Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics Germany (DE) National Academy of Sciences of the Republic of Armenia (NAS RA) / Հայաստանի Հանրապետության գիտությունների ազգային ակադեմիա, ՀՀ ԳԱԱ Armenia (AM) Durham University United Kingdom (GB) Nicolaus Copernicus Astronomical Centre of the Polish Academy of Sciences Poland (PL) University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot France (FR) Ruhr-Universität Bochum (RUB) Germany (DE) Humboldt-Universität zu Berlin Germany (DE) Institut national de physique nucléaire et de physique des particules (IN2P3) France (FR) Eberhard Karls Universität Tübingen Germany (DE) Commissariat à l'énergie atomique France (FR) University of Warsaw / Uniwersytet Warszawski Poland (PL) Ruprecht-Karls-Universität Heidelberg Germany (DE) Stockholm University / Stockholms universitet Sweden (SE) University of Namibia (UNAM) Namibia (NA) University of Adelaide Australia (AU) Dublin Institute for Advanced Studies (DIAS) Ireland (IE) Université Joseph Fourier (UJF Grenoble 1) France (FR) University of Leicester United Kingdom (GB) Institute of Nuclear Physics PAN / Instytut Fizyki Jądrowej im. Henryka Niewodniczańskiego PAN Poland (PL) Leopold-Franzens-Universität Innsbruck / University of Innsbruck Austria (AT) University of Savoy Mont Blanc / Université Savoie Mont Blanc France (FR) Nicolaus Copernicus University (NCU) / Uniwersytet Mikołaja Kopernika w Toruniu (UMK) Poland (PL) Université Bordeaux 1, Sciences et Technologies France (FR) Univerzita Karlova v Praze / Charles University in Prague Czech Republic (CZ) Jagiellonian University / Uniwersytet Jagielloński (UJ) Poland (PL) Noordwes-Universiteit / North-West University South Africa (ZA)

How to cite

APA:

Abramowski, A., Acero, F., Aharonian, F., Akhperjanian, A.G., Anton, G., Balenderan, S.,... Zechlin, H.-S. (2013). Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S. Astronomy & Astrophysics, 550. https://doi.org/10.1051/0004-6361/201220355

MLA:

Abramowski, A., et al. "Measurement of the extragalactic background light imprint on the spectra of the brightest blazars observed with H.E.S.S." Astronomy & Astrophysics 550 (2013).

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