| Title: |
Simultaneous observations of the blazar PKS 2155−304 from ultra-violet to TeV energies |
| Authors: |
Abdalla, H.; Adam, R.; Barbosa Martins, V.; Lenain, J.-P.; Leser, E.; Levy, C.; Lohse, T.; Lypova, I.; Mackey, J.; Majumdar, J.; Malyshev, D.; Marandon, V.; Marcowith, A.; Barnard, M.; Mares, A.; Mariaud, C.; Martí-Devesa, G.; Marx, R.; Maurin, G.; Meintjes, P. J.; Mitchell, A. M. W.; Moderski, R.; Mohamed, M.; Mohrmann, L.; Becherini, Y.; Moore, C.; Moulin, E.; Muller, J.; Murach, T.; Nakashima, S.; de Naurois, M.; Ndiyavala, H.; Niederwanger, F.; Niemiec, J.; Oakes, L.; Berge, D.; O'Brien, P.; Odaka, H.; Ohm, S.; de Ona Wilhelmi, E.; Ostrowski, M.; Oya, I.; Panter, M.; Parsons, R. D.; Perennes, C.; Petrucci, P.-O.; Bernlohr, K.; Peyaud, B.; Piel, Q.; Pita, S.; Poireau, V.; Priyana Noel, A.; Prokhorov, D. A.; Prokoph, H.; Puhlhofer, G.; Punch, M.; Quirrenbach, A.; Blackwell, R.; Raab, S.; Rauth, R.; Reimer, A.; Reimer, O.; Remy, Q.; Renaud, M.; Rieger, F.; Rinchiuso, L.; Romoli, C.; Rowell, G.; Bottcher, M.; Rudak, B.; Ruiz-Velasco, E.; Sahakian, V.; Sailer, S.; Saito, S.; Sanchez, D. A.; Santangelo, A.; Sasaki, M.; Schlickeiser, R.; Schussler, F.; Boisson, C.; Schulz, A.; Schutte, H. M.; Schwanke, U.; Schwemmer, S.; Seglar-Arroyo, M.; Senniappan, M.; Seyffert, A. S.; Shafi, N.; Shiningayamwe, K.; Simoni, R.; Bolmont, J.; Sinha, A.; Sol, H.; Specovius, A.; Spir-Jacob, M.; Stawarz, Ł.; Steenkamp, R.; Stegmann, C.; Steppa, C.; Takahashi, T.; Tavernier, T.; Bonnefoy, S.; Taylor, A. M.; Terrier, R.; Tiziani, D.; Tluczykont, M.; Trichard, C.; Tsirou, M.; Tsuji, N.; Tuffs, R.; Uchiyama, Y.; van der Walt, D. J.; Aharonian, F.; Bregeon, J.; van Eldik, C.; van Rensburg, C.; van Soelen, B.; Vasileiadis, G.; Veh, J.; Venter, C.; Vincent, P.; Vink, J.; Volk, H. J.; Vuillaume, T.; Breuhaus, M.; Wadiasingh, Z.; Wagner, S. J.; White, R.; Wierzcholska, A.; Yang, R.; Yoneda, H.; Zacharias, M.; Zanin, R.; Zdziarski, A. A.; Zech, A.; Brun, F.; Zorn, J.; Zywucka, N.; Madejski, G. M.; Nalewajko, K.; Madsen, K. K.; Chiang, J.; Balokovic, M.; Paneque, D.; Furniss, A. K.; Hayashida, M.; Brun, P.; Urry, C. M.; Ajello, M.; Harrison, F. A.; Giebels, B.; Stern, D.; Forster, K.; Giommi, P.; Perri, M.; Puccetti, S.; Zoglauer, A.; Bryan, M.; Tagliaferri, G.; H. E. S. S. Collaboration; NuSTAR Collaboration; Fermi-LAT Collaboration; Swift Collaboration; Buchele, M.; Bulik, T.; Bylund, T.; Caroff, S.; Carosi, A.; Ait Benkhali, F.; Casanova, S.; Cerruti, M.; Chand, T.; Chandra, S.; Chen, A.; Colafrancesco, S.; Curyło, M.; Davids, I. D.; Deil, C.; Devin, J.; Anguner, E. O.; deWilt, P.; Dirson, L.; Djannati-Ataï, A.; Dmytriiev, A.; Donath, A.; Doroshenko, V.; Dyks, J.; Egberts, K.; Emery, G.; Ernenwein, J.-P.; Arakawa, M.; Eschbach, S.; Feijen, K.; Fegan, S.; Fiasson, A.; Fontaine, G.; Funk, S.; Fußling, M.; Gabici, S.; Gallant, Y. A.; Gaté, F.; Arcaro, C.; Giavitto, G.; Giunti, L.; Glawion, D.; Glicenstein, J. F.; Gottschall, D.; Grondin, M.-H.; Hahn, J.; Haupt, M.; Heinzelmann, G.; Henri, G.; Armand, C.; Hermann, G.; Hinton, J. A.; Hofmann, W.; Hoischen, C.; Holch, T. L.; Holler, M.; Horns, D.; Huber, D.; Iwasaki, H.; Jamrozy, M.; Ashkar, H.; Jankowsky, D.; Jankowsky, F.; Jardin-Blicq, A.; Jung-Richardt, I.; Kastendieck, M. A.; Katarzynski, K.; Katsuragawa, M.; Katz, U.; Khangulyan, D.; Khelifi, B.; Backes, M.; King, J.; Klepser, S.; Kluzniak, W.; Komin, Nu.; Kosack, K.; Kostunin, D.; Kreter, M.; Lamanna, G.; Lemiere, A.; Lemoine-Goumard, M. |
| Source: |
Astronomy and astrophysics 639, A42 - (2020). doi:10.1051/0004-6361/201936900 |
| Publisher Information: |
EDP Sciences |
| Publication Year: |
2020 |
| Collection: |
DESY Publication Database (PUBDB) |
| Subject Terms: |
info:eu-repo/classification/ddc/520; flux; synchrotron; blazar; GLAST; ultraviolet; X-ray; HESS; BL Lacertae objects: individual: PKS 2155−304; astroparticle physics |
| Subject Geographic: |
DE |
| Description: |
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. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| ISSN: |
1432-0746; 0004-6361 |
| Relation: |
info:eu-repo/semantics/altIdentifier/arxiv/arXiv:1912.07273; info:eu-repo/semantics/altIdentifier/issn/1432-0746; info:eu-repo/semantics/altIdentifier/wos/WOS:000550675400002; info:eu-repo/semantics/altIdentifier/issn/0004-6361 |
| Availability: |
https://bib-pubdb1.desy.de/record/452417; https://bib-pubdb1.desy.de/search?p=id:%22PUBDB-2020-04667%22 |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edsbas.48F63A2C |
| Database: |
BASE |