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dc.contributor.authorDavids, Isak Delberth
dc.contributor.authorBöttcher, Markus
dc.contributor.authorBackes, Michael
dc.date.accessioned2019-08-02T11:06:36Z
dc.date.available2019-08-02T11:06:36Z
dc.date.issued2019
dc.identifier.citationDavids, I.D. et al. 2019. Centaurus A: hard x-ray and high-energy gamma-ray light curve correlation. Galaxies, 7(2): Article no 44. [https://doi.org/10.3390/galaxies7020044]en_US
dc.identifier.issn2075-4434 (Online)
dc.identifier.urihttp://hdl.handle.net/10394/33086
dc.identifier.urihttps://www.mdpi.com/2075-4434/7/2/44/pdf
dc.identifier.urihttps://doi.org/10.3390/galaxies7020044
dc.description.abstractCentaurus A, powered by a 55 million solar mass supermassive black hole, has been intensively monitored in all accessible wavelength ranges of the electromagnetic spectrum. However, its very-high energy gamma ( γ ) ray flux (TeV photons), obtained from H.E.S.S. is relatively faint, hampering detailed light curve analyses in the most energetic energy band. Yet, the extensive long-term light curve data from Fermi-LAT and Swift-BAT (hard X-rays) allows for cross-correlation studies. We find a hint that X-ray emission from Centaurus A precedes the γ rays by 25±125 days. If this lag is real and related to a γγ absorption effect in the broad-line region (BLR) around the central source, we can constrain the size of the BLR using light-travel time arguments. These are first results of extended light curve correlation studies between high-energy γ rays and X-rays from Centaurus Aen_US
dc.language.isoenen_US
dc.publisherMDPIen_US
dc.subjectActive galactic nucleusen_US
dc.subjectRadio galaxyen_US
dc.subjectCentaurus Aen_US
dc.subjectGeV γ-raysen_US
dc.subjectTeV γ-raysen_US
dc.subjectLight curveen_US
dc.subjectDiscrete correlation functionen_US
dc.titleCentaurus A: hard x-ray and high-energy gamma-ray light curve correlationen_US
dc.typeArticleen_US
dc.contributor.researchID13146629 - Davids, Isak Delberth
dc.contributor.researchID24420530 - Böttcher, Markus
dc.contributor.researchID28644743 - Backes, Michael


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