International audienceVery high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov telescope array in December 2009. This blazar is one of the brightest extragalactic objects in the Fermi bright source list and has a hard spectrum in the MeV to GeV range. In the TeV range, a photon index of 3.89 ± 0.37 (stat) ±0.22 (sys) and a flux normalisation at 1 TeV, Φ1 TeV = (3.5 ± 1.1(stat) ± 0.9(sys)) × 10-13 cm-2 s-1 TeV-1 were found. The detection with H.E.S.S. triggered observations in the X-ray band with the Swift and RXTE telescopes. Simultaneous UV and optical data from Swift UVOT and data from the optical telescopes ATOM and ROTSE...
Very high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov telescope...
Very high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov telescope...
International audienceThe active galactic nucleus PKS 0301−243 (z = 0.266) is a high-synchrotron-pea...
Very high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov telescope...
Reproduced with permission from Astronomy & Astrophysics, © ESOVery high-energy γ-ray emission from ...
Very high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov...
Very high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov telescope...
Very high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov telescope...
International audienceThe active galactic nucleus PKS 0301−243 (z = 0.266) is a high-synchrotron-pea...
Very high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov telescope...
Reproduced with permission from Astronomy & Astrophysics, © ESOVery high-energy γ-ray emission from ...
Very high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov...
Very high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov telescope...
Very high-energy γ-ray emission from PKS 0447−439 was detected with the H.E.S.S. Cherenkov telescope...
International audienceThe active galactic nucleus PKS 0301−243 (z = 0.266) is a high-synchrotron-pea...