Authors
Attila Abramowski, F Aharonian, F Ait Benkhali, AG Akhperjanian, E Angüner, Gisela Anton, Michael Backes, Shangkari Balenderan, Agnès Balzer, Anna Barnacka, Yvonne Becherini, J Becker Tjus, K Bernlöhr, E Birsin, E Bissaldi, Jonathan Biteau, Markus Boettcher, Catherine Boisson, J Bolmont, Pol Bordas, J Brucker, Francois Brun, Pierre Brun, Tomasz Bulik, Svenja Carrigan, Sabrina Casanova, Paula M Chadwick, R Chalme-Calvet, Ryan CG Chaves, A Cheesebrough, M Chrétien, Sergio Colafrancesco, Gabriele Cologna, Jan Conrad, C Couturier, Y Cui, M Dalton, MK Daniel, ID Davids, B Degrange, C Deil, P Dewilt, HJ Dickinson, A Djannati-Ataï, W Domainko, LO’C Drury, G Dubus, K Dutson, J Dyks, M Dyrda, Tanya Edwards, K Egberts, Peter Eger, P Espigat, C Farnier, S Fegan, F Feinstein, MV Fernandes, D Fernandez, A Fiasson, G Fontaine, Andreas Förster, M Füßling, M Gajdus, YA Gallant, T Garrigoux, G Giavitto, B Giebels, JF Glicenstein, M-H Grondin, M Grudzińska, S Häffner, J Hahn, J Harris, G Heinzelmann, G Henri, G Hermann, O Hervet, A Hillert, JA Hinton, W Hofmann, P Hofverberg, M Holler, D Horns, A Jacholkowska, C Jahn, Marek Jamrozy, M Janiak, F Jankowsky, I Jung, MA Kastendieck, K Katarzyński, U Katz, S Kaufmann, B Khélifi, Michel Kieffer, S Klepser, D Klochkov, W Kluźniak, T Kneiske, D Kolitzus, Nu Komin, K Kosack, S Krakau, F Krayzel, PP Krüger, H Laffon, G Lamanna, J Lefaucheur, A Lemière, M Lemoine-Goumard, J-P Lenain, T Lohse, A Lopatin, C-C Lu, V Marandon, Alexandre Marcowith, R Marx, G Maurin, N Maxted, M Mayer, TJL Mccomb, J Méhault, PJ Meintjes, U Menzler, M Meyer, R Moderski, M Mohamed, Emmanuel Moulin, T Murach, CL Naumann, M De Naurois, J Niemiec, SJ Nolan, L Oakes, H Odaka, S Ohm, E de Oña Wilhelmi, B Opitz, Michał Ostrowski, I Oya, M Panter, RD Parsons, M Paz Arribas, NW Pekeur, G Pelletier, J Perez, P-O Petrucci, B Peyaud, S Pita
Publication date
2014/2/1
Journal
Astronomy & Astrophysics
Volume
562
Pages
A145
Publisher
EDP Sciences
Description
Context
Very-high-energy (VHE; E > 100 GeV) γ-ray emission from blazars inevitably gives rise to electron-positron pair production through the interaction of these γ-rays with the extragalactic background light (EBL). Depending on the magnetic fields in the proximity of the source, the cascade initiated from pair production can result in either an isotropic halo around an initially beamed source or a magnetically broadened cascade flux.
Aims
Both extended pair-halo (PH) and magnetically broadened cascade (MBC) emission from regions surrounding the blazars 1ES 1101-232, 1ES 0229+200, and PKS 2155-304 were searched for using VHE γ-ray data taken with the High Energy Stereoscopic System (H.E.S.S.) and high-energy (HE; 100 MeV < E < 100 GeV) γ-ray data with the Fermi Large Area Telescope (LAT).
Methods
By comparing the angular distributions of the reconstructed γ-ray events to the angular profiles …
Scholar articles
A Abramowski, F Aharonian, FA Benkhali… - Astronomy & Astrophysics, 2014