H.E.S.S and Fermi-LAT discovery of gamma rays from the blazar 1ES 1312-423
Creators: name: Collaboration, H. E. S. S.
name: Abramowski, A.
name: Acero, F.
name: Aharonian, F.
name: Akhperjanian, A. G.
name: Angüner, E.
name: Anton, G.
name: Balenderan, S.
name: Balzer, A.
name: Barnacka, A.
name: Becherini, Y.
name: Tjus, J. Becker
name: Bernlöhr, K.
name: Birsin, E.
name: Bissaldi, E.
name: Biteau, J.
name: Boisson, C.
name: Bolmont, J.
name: Bordas, P.
name: Brucker, J.
name: Brun, F.
name: Brun, P.
name: Bulik, T.
name: Carrigan, S.
name: Casanova, S.
name: Cerruti, M.
name: Chadwick, P. M.
name: Chalme-Calvet, R.
name: Chaves, R. C. G.
name: Cheesebrough, A.
name: Chrétien, M.
name: Colafrancesco, S.
name: Cologna, G.
name: Conrad, J.
name: Couturier, C.
name: Dalton, M.
name: Daniel, M. K.
name: Davids, I. D.
name: Degrange, B.
name: Deil, C.
name: deWilt, P.
name: Dickinson, H. J.
name: Djannati-Ataï, A.
name: Domainko, W.
name: Drury, L. O'C.
name: Dubus, G.
name: Dutson, K.
name: Dyks, J.
name: Dyrda, M.
name: Edwards, T.
name: Egberts, K.
name: Eger, P.
name: Espigat, P.
name: Farnier, C.
name: Fegan, S.
name: Feinstein, F.
name: Fernandes, M. V.
name: Fernandez, D.
name: Fiasson, A.
name: Fontaine, G.
name: Förster, A.
name: Füßling, M.
name: Gajdus, M.
name: Gallant, Y. A.
name: Garrigoux, T.
name: Gast, H.
name: Giebels, B.
name: Glicenstein, J. F.
name: Göring, D.
name: Grondin, M. -H.
name: Grudzińska, M.
name: Häffner, S.
name: Hague, J. D.
name: Hahn, J.
name: Harris, J.
name: Heinzelmann, G.
name: Henri, G.
name: Hermann, G.
name: Hervet, O.
name: Hillert, A.
name: Hinton, J. A.
name: Hofmann, W.
name: Hofverberg, P.
name: Holler, M.
name: Horns, D.
name: Jacholkowska, A.
name: Jahn, C.
name: Jamrozy, M.
name: Janiak, M.
name: Jankowsky, F.
name: Jung, I.
name: Kastendieck, M. A.
name: Katarzyński, K.
name: Katz, U.
name: Kaufmann, S.
name: Khélifi, B.
name: Kieffer, M.
name: Klepser, S.
name: Klochkov, D.
name: Kluźniak, W.
name: Kneiske, T.
name: Kolitzus, D.
name: Komin, Nu.
name: Kosack, K.
name: Krakau, S.
name: Krayzel, F.
name: Krüger, P. P.
name: Laffon, H.
name: Lamanna, G.
name: Lefaucheur, J.
name: Lemoine-Goumard, M.
name: Lenain, J. -P.
name: Lennarz, D.
name: Lohse, T.
name: Lopatin, A.
name: Lu, C. -C.
name: Marandon, V.
name: Marcowith, A.
name: Maurin, G.
name: Maxted, N.
name: Mayer, M.
name: McComb, T. J. L.
name: Medina, M. C.
name: Méhault, J.
name: Menzler, U.
name: Meyer, M.
name: Moderski, R.
name: Mohamed, M.
name: Moulin, E.
name: Murach, T.
name: Naumann, C. L.
name: de Naurois, M.
name: Nedbal, D.
name: Niemiec, J.
name: Nolan, S. J.
name: Oakes, L.
name: Ohm, S.
name: de OñaWilhelmi, E.
name: Opitz, B.
name: Ostrowski, M.
name: Oya, I.
name: Panter, M.
name: Parsons, R. D.
name: Arribas, M. Paz
name: Pekeur, N. W.
name: Pelletier, G.
name: Perez, J.
name: Petrucci, P. -O.
name: Peyaud, B.
name: Pita, S.
name: Poon, H.
name: Pühlhofer, G.
name: Punch, M.
name: Quirrenbach, A.
name: Raab, S.
name: Raue, M.
name: Reimer, A.
name: Reimer, O.
name: Renaud, M.
name: Reyes, R. de los
name: Rieger, F.
name: Rob, L.
name: Rosier-Lees, S.
name: Rowell, G.
name: Rudak, B.
name: Rulten, C. B.
name: Sahakian, V.
name: Sanchez, D. A.
name: Santangelo, A.
name: Schlickeiser, R.
name: Schüssler, F.
name: Schulz, A.
name: Schwanke, U.
name: Schwarzburg, S.
name: Schwemmer, S.
name: Sol, H.
name: Spengler, G.
name: Spieß, F.
name: Stawarz, {Ł. }
name: Steenkamp, R.
name: Stegmann, C.
name: Stinzing, F.
name: Stycz, K.
name: Sushch, I.
name: Szostek, A.
name: Tavernet, J. -P.
name: Terrier, R.
name: Tluczykont, M.
name: Trichard, C.
name: Valerius, K.
name: van Eldik, C.
name: Vasileiadis, G.
name: Venter, C.
name: Viana, A.
name: Vincent, P.
name: Völk, H. J.
name: Volpe, F.
name: Vorster, M.
name: Wagner, S. J.
name: Wagner, P.
name: Ward, M.
name: Weidinger, M.
name: White, R.
name: Wierzcholska, A.
name: Willmann, P.
name: Wörnlein, A.
name: Wouters, D.
name: Zacharias, M.
name: Zajczyk, A.
name: Zdziarski, A. A.
name: Zech, A.
name: Zechlin, H. -S.
name: Perkins, J. S.
name: Ojha, R.
name: Stevens, J.
name: Edwards, P. G.
name: Kadler, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: A deep observation campaign carried out by the High Energy Stereoscopic System (H.E.S.S.) on Centaurus A enabled the discovery of gamma rays from the blazar 1ES 1312-423, two degrees away from the radio galaxy. With a differential flux at 1 TeV of (1.9 +/-0.6(stat) +/-0.4(sys)) x 10^{-13} /cm^2 /s /TeV corresponding to 0.5% of the Crab nebula differential flux and a spectral index of 2.9 +/- 0.5 (stat) +/- 0.2 (sys), 1ES 1312-423 is one of the faintest sources ever detected in the very high energy (E&gt;100 GeV) extragalactic sky. A careful analysis using three and a half years of Fermi-LAT data allows the discovery at high energies (E&gt;100 MeV) of a hard spectrum (index of 1.4 +/- 0.4 (stat) +/- 0.2 (sys)) 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 black-body spectrum for the optical emission from the host galaxy.
description: 12 pages, 10 figures, accepted in MNRAS