English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Recently, a new method to constrain the distances of blazars with unknownredshift using combined observations in the GeV and TeV regimes has beendeveloped. The underlying assumption is that the Very High Energy (VHE, E > 100GeV) spectrum corrected for the absorption of TeV photons by the ExtragalacticBackground Light (EBL) via photon-photon interaction should still be softerthan the gamma-ray spectrum observed by Fermi/LAT. The constraints found arerelated to the real redshifts by a simple linear relation, that has been usedto infer the unknown or uncertain distance of blazars. The sample is revisedwith the up-to-date spectra in both TeV and GeV bands and the method applied tothe unknown distance blazar PKS 1424+240 detected at VHE.

Constraining blazars distances with combined GeV and TeV data