HESS and Fermi-LAT discovery of γ-rays from the blazar 1ES 1312-423

Abramowski A, Acero F, Aharonian F, Akhperjanian AG, Anguener E, Anton G, Balenderan S, Balzer A, Barnacka A, Becherini Y, Tjus JB, Bernloehr K, Birsin E, Bissaldi E, Biteau J, Boisson C, Bolmont J, Bordas P, Brucker J, Brun F, Brun P, Bulik T, Carrigan S, Casanova S, Cerruti M, Chadwick PM, Chalme-Calvet R, Chaves RCG, Cheesebrough A, Chretien M, Colafrancesco S, 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, Edwards T, Egberts K, Eger P, Espigat P, 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, Göring D, Grondin MH, Grudzinska M, Häffner S, Hague JD, Hahn J, Harris J, Heinzelmann G, Henri G, Hermann G, Hervet O, Hillert A, Hinton JA, Hofmann W, Hofverberg P, Holler M, Horns D, Jacholkowska A, Jahn C, Jamrozy M, Janiak M, Jankowsky F, Jung I, Kastendieck MA, Katarzynski K, Katz U, Kaufmann S, Khelifi B, Kieffer M, Klepser S, Klochkov D, Kluzniak W, Kneiske T, Kolitzus D, Komin N, Kosack K, Krakau S, Krayzel F, Krueger PP, Laffon H, Lamanna G, Lefaucheur J, Lemoine-Goumard M, Lenain JP, Lennarz D, Lohse T, Lopatin A, Lu CC, Marandon V, Marcowith A, Maurin G, Maxted N, Mayer M, Mccomb TJL, Medina MC, Mehault J, Menzler U, Meyer M, Moderski R, Mohamed M, Moulin E, Murach T, Naumann CL, De Naurois M, Nedbal D, Niemiec J, Nolan SJ, Oakes L, Ohm S, Wilhelmi EDO, Opitz B, Ostrowski M, Oya I, Panter M, Parsons RD, Arribas MP, Pekeur NW, Pelletier G, Perez J, Petrucci PO, Peyaud B, Pita S, Poon H, Pühlhofer G, Punch M, Quirrenbach A, Raab S, Raue M, Reimer A, Reimer O, Renaud M, De Los Reyes R, Rieger F, Rob L, Rosier-Lees S, Rowell G, Rudak B, Rulten CB, Sahakian V, Sanchez DA, Santangelo A, Schlickeiser R, Schuessler F, Schulz A, Schwanke U, Schwarzburg S, Schwemmer S, Sol H, Spengler G, Spiess F, Stawarz L, Steenkamp R, Stegmann C, Stinzing F, Stycz K, Sushch I, Szostek A, Tavernet JP, Terrier R, Tluczykont M, Trichard C, Valerius K, van Eldik C, Vasileiadis G, Venter C, Viana A, Vincent P, Voelk HJ, Volpe F, Vorster M, Wagner SJ, Wagner P, Ward M, Weidinger M, White R, Wierzcholska A, Willmann P, Wörnlein A, Wouters D, Zacharias M, Zajczyk A, Zdziarski AA, Zech A, Zechlin HS, Perkins JS, Ojha R, Stevens J, Edwards PG, Kadler M (2013)


Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2013

Journal

Publisher: Oxford University Press (OUP): Policy P - Oxford Open Option A

Book Volume: 434

Pages Range: 1889-1901

Journal Issue: 3

DOI: 10.1093/mnras/stt1081

Abstract

A deep observation campaign carried out by the High Energy Stereoscopic System (HESS) on Centaurus A enabled the discovery of γ-rays from the blazar 1ES 1312-423, 2° away from the radio galaxy. With a differential flux at 1 TeV of f(1 TeV) = (1.9 ± 0.6 ± 0.4) × 10 cm s TeV corresponding to 0.5 per cent of the Crab nebula differential flux and a spectral index γ = 2.9 ± 0.5 ± 0.2, 1ES 1312-423 is one of the faintest sources ever detected in the very high energy (E <100 GeV) extragalactic sky. A careful analysis using three and a half years of Fermi Large Area Telescope (Fermi-LAT) data allows the discovery at high energies (100 < E MeV) of a hard spectrum (γ =1.4±0.4stat ±0.2sys) source coincident with 1ES 1312-423. Radio, optical, UV and X-ray observations complete the spectral energy distribution of this blazar, now covering 16 decades in energy. The emission is successfully fitted with a synchrotron self-Compton model for the non-thermal component, combined with a blackbody spectrum for the optical emission from the host galaxy. © 2013 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.

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How to cite

APA:

Abramowski, A., Acero, F., Aharonian, F., Akhperjanian, A.G., Anguener, E., Anton, G.,... Kadler, M. (2013). HESS and Fermi-LAT discovery of γ-rays from the blazar 1ES 1312-423. Monthly Notices of the Royal Astronomical Society, 434(3), 1889-1901. https://doi.org/10.1093/mnras/stt1081

MLA:

Abramowski, A., et al. "HESS and Fermi-LAT discovery of γ-rays from the blazar 1ES 1312-423." Monthly Notices of the Royal Astronomical Society 434.3 (2013): 1889-1901.

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