Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/127270
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Type: | Journal article |
Title: | Simultaneous observations of the blazar PKS 2155-304 from ultra-violet to TeV energies |
Author: | Abdalla, H. Adam, R. Aharonian, F. Benkhali, F.A. Anguner, E.O. Arakawa, M. Arcaro, C. Armand, C. Ashkar, H. Backes, M. Martins, V.B. Barnard, M. Becherini, Y. Berge, D. Bernlohr, K. Blackwell, R. Bottcher, M. Boisson, C. Bolmont, J. Bonnefoy, S. et al. |
Citation: | Astronomy and Astrophysics: a European journal, 2020; 639:A42-1-A42-13 |
Publisher: | EDP Sciences |
Issue Date: | 2020 |
ISSN: | 0004-6361 1432-0746 |
Statement of Responsibility: | H. Abdalla … R. Blackwell …. P. deWilt … K. Feijen … G. Rowell … et al. |
Abstract: | 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. |
Rights: | © H. Abdalla et al. 2020. Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
DOI: | 10.1051/0004-6361/201936900 |
Grant ID: | ARC |
Published version: | http://dx.doi.org/10.1051/0004-6361/201936900 |
Appears in Collections: | Aurora harvest 4 Physics publications |
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hdl_127270.pdf | Published Version | 761.28 kB | Adobe PDF | View/Open |
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