Details

Autor(en) / Beteiligte

• Aharonian, F.
• Arakawa, M.
• Armand, C.
• Barbosa Martins, V.
• Berge, D.
• Bernlöhr, K.
• Boisson, C.
• Brun, F.
• Brun, P.
• Bryan, M.
• Büchele, M.
• Bulik, T.
• Bylund, T.
• Caroff, S.
• Casanova, S.
• Cerruti, M.
• Chandra, S.
• Curyło, M.
• deWilt, P.
• Djannati-Ataï, A.
• Dmytriiev, A.
• Doroshenko, V.
• Ernenwein, J.-P.
• Füßling, M.
• Gabici, S.
• Gottschall, D.
• Henri, G.
• Hinton, J. A.
• Hoischen, C.
• Iwasaki, H.
• Jankowsky, D.
• Jardin-Blicq, A.
• Kastendieck, M. A.
• Katsuragawa, M.
• King, J.
• Lamanna, G.
• Lemoine-Goumard, M.
• Lenain, J.-P.
• Leser, E.
• Lypova, I.
• Mackey, J.
• Marandon, V.
• Marcowith, A.
• Maurin, G.
• Meintjes, P. J.
• Mohamed, M.
• Mohrmann, L.
• Niederwanger, F.
• Ohm, S.
• Ostrowski, M.
• Perennes, C.
• Petrucci, P.-O.
• Peyaud, B.
• Piel, Q.
• Poireau, V.
• Prokoph, H.
• Punch, M.
• Raab, S.
• Reimer, A.
• Reimer, O.
• Rinchiuso, L.
• Romoli, C.
• Sailer, S.
• Sanchez, D. A.
• Santangelo, A.
• Schlickeiser, R.
• Schutte, H. M.
• Schwemmer, S.
• Seglar-Arroyo, M.
• Shiningayamwe, K.
• Specovius, A.
• Stawarz, Ł.
• Steenkamp, R.
• Stegmann, C.
• Takahashi, T.
• Tavernier, T.
• Terrier, R.
• Trichard, C.
• Tsirou, M.
• Tsuji, N.
• Tuffs, R.
• van der Walt, D. J.
• van Rensburg, C.
• Wagner, S. J.
• White, R.
• Wierzcholska, A.
• Zanin, R.
• Zech, A.
• Żywucka, N.
• Madejski, G. M.
• Nalewajko, K.
• Chiang, J.
• Baloković, M.
• Paneque, D.
• Urry, C. M.
• Ajello, M.
• Harrison, F. A.
• Stern, D.
• Puccetti, S.
• Tagliaferri, G.

Titel

Simultaneous observations of the blazar PKS 2155−304 from ultra-violet to TeV energies

Ist Teil von

• Astronomy and astrophysics (Berlin), 2020-07, Vol.639, p.A42

Ort / Verlag

Heidelberg: EDP Sciences

Erscheinungsjahr

2020

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Here we report the results of the first ever contemporaneous multi-wavelength observation campaign on the BL Lac object PKS 2155−304 involving Swift , NuSTAR , Fermi -LAT, and H.E.S.S. The use of these instruments allows us to cover a broad energy range, which is important for disentangling the different radiative mechanisms. The source, observed from June 2013 to October 2013, was found in a low flux state with respect to previous observations but exhibited highly significant flux variability in the X-rays. The high-energy end of the synchrotron spectrum can be traced up to 40 keV without significant contamination by high-energy emission. A one-zone synchrotron self-Compton model was used to reproduce the broadband flux of the source for all the observations presented here but failed for previous observations made in April 2013. A lepto-hadronic solution was then explored to explain these earlier observational results.