1–5 Oct 2024
Africa/Johannesburg timezone

H.E.S.S. detection and multiwavelength study of the z ∼ 1 blazar PKS 0346-27

4 Oct 2024, 13:45
15m
Contributed Talk Active Galactic Nuclei AGN IV

Speaker

Ogochukwu Chibueze (NORTH WEST UNIVERSITY, POTCHEFSTROOM, SOUTH AFRICA)

Description

We report the detection of a TeV blazar PKS 0346-27 at redshift 0.99 by the High Energy Stereoscopic System (H.E.S.S.) on 3rd November, 2021 with a significance above 5 σ. The spectral energy distribution (SED) consists of the simultaneous observations by Fermi-LAT, Swift XRT and UVOT during the H.E.S.S detection period. We show that a hadronic one-zone model (modified by strong EBL absorption) can provide a satisfactory fit to the data. The lightcurve consists of the multiwavelength data for all the observation periods and we were able to test some time lag between the GeV and TeV bands.

Author

Ogochukwu Chibueze (NORTH WEST UNIVERSITY, POTCHEFSTROOM, SOUTH AFRICA)

Co-author

Prof. Markus Bottcher (NORTH WEST UNIVERSITY, POTCHEFSTROOM, SOUTH AFRICA)

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