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dc.contributor.authorAbdalla, H.
dc.contributor.authorArcaro, C.
dc.contributor.authorBackes, M.
dc.contributor.authorBarnard, M.
dc.contributor.authorBöttcher, M.
dc.contributor.authorChand, T.
dc.contributor.authorChandra, S.
dc.contributor.authorKreter, M.
dc.contributor.authorNdiyavala, H.
dc.contributor.authorSchutte, H.M.
dc.contributor.authorSeyffert, A.S.
dc.contributor.authorVan der Walt, D.J.
dc.contributor.authorVan Rensburg, C.
dc.contributor.authorVenter, C.
dc.contributor.authorWadiasingh, Z.
dc.contributor.authorZacharias, M.
dc.contributor.authorZywucka, N.
dc.contributor.authorH.E.S.S. Collaboration
dc.contributor.authorFermi LAT
dc.date.accessioned2020-08-07T11:36:11Z
dc.date.available2020-08-07T11:36:11Z
dc.date.issued2020
dc.identifier.citationAbdalla, H. et al. 2020. Simultaneous observations of the blazar PKS 2155-304 from ultra-violet to TeV energies. Astronomy & astrophysics, 639: #A42. [https://doi.org/10.1051/0004-6361/201936900]en_US
dc.identifier.issn0004-6361
dc.identifier.issn1432-0746 (Online)
dc.identifier.urihttp://hdl.handle.net/10394/35526
dc.identifier.urihttps://www.aanda.org/articles/aa/pdf/2020/07/aa36900-19.pdf
dc.identifier.urihttps://doi.org/10.1051/0004-6361/201936900
dc.description.abstractHere 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 resultsen_US
dc.language.isoenen_US
dc.publisherEDP Sciencesen_US
dc.subjectBL Lacertae objects: individual: PKS 2155−304en_US
dc.subjectAstroparticle physicsen_US
dc.titleSimultaneous observations of the blazar PKS 2155-304 from ultra-violet to TeV energiesen_US
dc.typeArticleen_US
dc.contributor.researchID26598973 - Abdalla, Hassan
dc.contributor.researchID30588766 - Arcaro, Cornelia
dc.contributor.researchID28644743 - Backes, Michael
dc.contributor.researchID20574266 - Barnard, Monica
dc.contributor.researchID24420530 - Böttcher, Markus
dc.contributor.researchID30366755 - Chand, Tej B.
dc.contributor.researchID31125417 - Chandra, Sunil
dc.contributor.researchID33379009 - Kreter, Michael
dc.contributor.researchID26403366 - Ndiyavala, Hambeleleni
dc.contributor.researchID22799133 - Schutte, Hester M.
dc.contributor.researchID20126999 - Seyffert, Albertus Stefanus
dc.contributor.researchID10060499 - Van der Walt, Diederick Johannes
dc.contributor.researchID21106266 - Van Rensburg, Carlo
dc.contributor.researchID12006653 - Venter, Christo
dc.contributor.researchID26594080 - Wadiasingh, Zorawar
dc.contributor.researchID29092086 - Zacharias, Michael
dc.contributor.researchID34208968 - Zywucka-Hejzner, Natalia


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