Authors
H Abdalla, A Abramowski, F Aharonian, F Ait Benkhali, AG Akhperjanian, Tom Andersson, EO Angüner, M Arakawa, M Arrieta, P Aubert, M Backes, A Balzer, M Barnard, Yvonne Becherini, J Becker Tjus, D Berge, S Bernhard, K Bernlöhr, R Blackwell, M Böttcher, C Boisson, J Bolmont, S Bonnefoy, P Bordas, J Bregeon, F Brun, P Brun, M Bryan, M Büchele, Tomasz Bulik, M Capasso, J Carr, S Casanova, M Cerruti, N Chakraborty, RCG Chaves, A Chen, J Chevalier, M Coffaro, S Colafrancesco, G Cologna, B Condon, J Conrad, Y Cui, ID Davids, J Decock, B Degrange, C Deil, J Devin, P Dewilt, L Dirson, A Djannati-Ataï, W Domainko, A Donath, LO’C Drury, K Dutson, J Dyks, T Edwards, K Egberts, P Eger, J-P Ernenwein, S Eschbach, Christian Farnier, S Fegan, MV Fernandes, A Fiasson, G Fontaine, A Förster, S Funk, M Fuessling, S Gabici, YA Gallant, T Garrigoux, G Giavitto, B Giebels, JF Glicenstein, D Gottschall, Arti Goyal, M-H Grondin, J Hahn, M Haupt, J Hawkes, G Heinzelmann, G Henri, G Hermann, JA Hinton, W Hofmann, C Hoischen, TL Holch, M Holler, D Horns, A Ivascenko, H Iwasaki, A Jacholkowska, Marek Jamrozy, M Janiak, D Jankowsky, F Jankowsky, M Jingo, T Jogler, L Jouvin, I Jung-Richardt, MA Kastendieck, K Katarzyński, Miho Katsuragawa, U Katz, D Kerszberg, D Khangulyan, B Khélifi, J King, S Klepser, D Klochkov, W Kluźniak, D Kolitzus, Nu Komin, K Kosack, S Krakau, M Kraus, PP Krüger, H Laffon, G Lamanna, J Lau, J-P Lees, J Lefaucheur, V Lefranc, A Lemière, M Lemoine-Goumard, J-P Lenain, E Leser, T Lohse, M Lorentz, R Liu, R López-Coto, I Lypova, V Marandon, Alexandre Marcowith, C Mariaud, R Marx, G Maurin, N Maxted, M Mayer, PJ Meintjes, M Meyer, AMW Mitchell, R Moderski, M Mohamed, L Mohrmann, K Morå, E Moulin, T Murach
Publication date
2018/4/1
Journal
Astronomy & Astrophysics
Volume
612
Pages
A9
Publisher
EDP Sciences
Description
The diffuse very high-energy (VHE; >100 GeV) γ-ray emission observed in the central 200 pc of the Milky Way by H.E.S.S. was found to follow dense matter distribution in the central molecular zone (CMZ) up to a longitudinal distance of about 130 pc to the Galactic centre (GC), where the flux rapidly decreases. This was initially interpreted as the result of a burst-like injection of energetic particles 104 yr ago, but a recent more sensitive H.E.S.S. analysis revealed that the cosmic-ray (CR) density profile drops with the distance to the centre, making data compatible with a steady cosmic PeVatron at the GC. In this paper, we extend this analysis to obtain, for the first time, a detailed characterisation of the correlation with matter and to search for additional features and individual γ-ray sources in the inner 200 pc. Taking advantage of 250 h of H.E.S.S. data and improved analysis techniques, we perform a detailed …
Scholar articles
H Abdalla, A Abramowski, F Aharonian, FA Benkhali… - Astronomy & Astrophysics, 2018