Show simple item record

dc.contributor.authorKreter, Michael
dc.contributor.authorBöttcher, Markus
dc.contributor.authorKadler, Matthias
dc.contributor.authorKrauss, Felicia
dc.contributor.authorBuson, Sara
dc.date.accessioned2020-06-19T09:24:04Z
dc.date.available2020-06-19T09:24:04Z
dc.date.issued2019
dc.identifier.citationKreter, M. et al. 2019. Search for High-redshift Blazars with Fermi/LAT. 36th International Cosmic Ray Conference -ICRC2019, 24 Jul-1Aug, Madison, WI, U.S.A. Proceedings of science, 358: #573. [https://pos.sissa.it/358/573/pdf]en_US
dc.identifier.issn1824-8039 (Online)
dc.identifier.urihttp://hdl.handle.net/10394/34810
dc.identifier.urihttps://pos.sissa.it/358/573/pdf
dc.description.abstractHigh-redshift blazars (z ≥ 2.5) are one of the most powerful classes of γ-ray sources in the Universe. These objects possess the highest jet powers and luminosities and have black-hole masses often in excess of 109 solar masses. In addition, high-redshift blazars are important cosmological probes and serve as test objects for blazar evolution models. Due to their large distance, their high-energy emission peaks are often downshifted to energies below the GeV range, which makes them difficult to study with Fermi/LAT and only the very brightest objects are detectable. Hence, only a small number of high-redshift blazars could be detected with Fermi/LAT so far. In this work, we present a strategy to increase the detection statistics at redshift z ≥ 2.5 via a search for flaring events in high-redshift γ-ray blazars whose long-term flux is just below the sensitivity limit of Fermi/LAT. Seven previously GeV undetected high-redshift blazars have been identified from their bright monthly outburst periods, while more detections are expected in the futureen_US
dc.language.isoenen_US
dc.publisherSissa Medialaben_US
dc.titleSearch for High-redshift Blazars with Fermi/LATen_US
dc.typePresentationen_US
dc.contributor.researchID24420530 - Böttcher, Markus
dc.contributor.researchID33379009 - Kreter, Michael


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record