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

With the installation of a new 28-m diameter imaging atmospheric Cherenkovtelescope in the middle of the array, the H.E.S.S. instrument has entered since2012 into its Phase II. The fifth large-size telescope is particularlyimportant to lower the threshold energy of the array, and is thus a uniqueinstrument to observe low-frequency-peaked blazars, such as flat-spectrumradio-quasars (FSRQs), which remain rare in the very-high- energy (VHE; E $>$100 GeV) $\gamma$-ray domain. In this contribution, we report on the discoverywith the H.E.S.S. telescopes of VHE $\gamma$-ray emission from the FSRQ PKS0736+017 (z=0.189). H.E.S.S. observations were triggered as atarget-of-opportunity in February 2015 following the detection of $\gamma$-rayflaring activity in the MeV-GeV energy-band with Fermi-LAT. Significant VHEemission is detected with H.E.S.S. only during one of the nights of theobserving campaign, showing at least night-by-night variability in the VHEregime. We discuss the location of the $\gamma$-ray emitting region within therelativistic jet, using opacity and variability constraints.

H.E.S.S. discovery of very-high-energy emission from the blazar PKS 0736+017: on the location of the $\gamma$-ray emitting region in FSRQs