| dc.contributor.author | Davids, I.D. | |
| dc.contributor.author | Böttcher, M. | |
| dc.contributor.author | Backes, M. | |
| dc.date.accessioned | 2019-04-29T06:02:45Z | |
| dc.date.available | 2019-04-29T06:02:45Z | |
| dc.date.issued | 2017 | |
| dc.identifier.citation | Davids, I.D. et al. 2017. Centaurus A: hard X-ray and soft gamma-ray lightcurve correlation. 5th Annual Conference on High Energy Astrophysics in Southern Africa (HEASA), 4-6 Oct 2017, University of the Witwatersrand (Wits), South Africa. Proceedings of science, 319: art. #10. [https://doi.org/10.22323/1.319.0010] | en_US |
| dc.identifier.issn | 1824-8039 (Online) | |
| dc.identifier.uri | http://hdl.handle.net/10394/32272 | |
| dc.identifier.uri | https://pos.sissa.it/319/010/pdf | |
| dc.identifier.uri | https://doi.org/10.22323/1.319.0010 | |
| dc.description.abstract | Centaurus A (Cen 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 gamma-ray flux, both in the H.E.S.S. very-high and the Fermi-LAT high-energy gamma-ray regimes, is relatively faint, hampering lightcurve analyses. 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 Cen A precedes the gamma rays by 25 days. If this lag is real and related to a gamma-gamma absorption effect in the broad-line region (BLR) around the central source, then 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 gamma rays and X-rays from Cen A | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | Sissa Medialab | en_US |
| dc.title | Centaurus A: hard X-ray and soft gamma-ray lightcurve correlation | en_US |
| dc.type | Presentation | en_US |
| dc.contributor.researchID | 13146629 - Davids, Isak Delberth | |
| dc.contributor.researchID | 24420530 - Böttcher, Markus | |
| dc.contributor.researchID | 28644743 - Backes, Michael | |
