We report on the detection of very high energy (VHE; E > 100 GeV) γ-ray emission from the BL Lac objects KUV 00311−1938 and PKS 1440−389 with the High Energy Stereoscopic System (H.E.S.S.). H.E.S.S. observations were accompanied or preceded by multiwavelength observations with Fermi/LAT, XRT and UVOT onboard the Swift satellite, and ATOM. Based on an extrapolation of the Fermi/LAT spectrum towards the VHE γ-ray regime, we deduce a 95 per cent confidence level upper limit on the unknown redshift of KUV 00311−1938 of z < 0.98 and of PKS 1440−389 of z < 0.53. When combined with previous spectroscopy results, the redshift of KUV 00311−1938 is constrained to 0.51 ≤ z < 0.98 and of PKS 1440−389 to 0.14 ⪅ z < 0.53.H. Abdalla … P. deWilt … K. Feije...
We report the first detection of very-high-energy (VHE) gamma-ray emission above 140GeV from PKS 142...
Aims. We study the possible detection of and properties of very high-energy (VHE) γ-ray emission (in...
The active galactic nucleus PKS 0301-243 (z=0.266) is a high-synchrotron-peaked BL Lac object that i...
We report on the detection of very high energy (VHE; E > 100 GeV) γ-ray emission from the BL Lac obj...
ABSTRACT We report on the detection of very high energy (VHE; E > 100 GeV) γ-ray emis...
We report on the detection of very high energy (VHE; E > 100 GeV) γ-ray emission from the BL Lac obj...
Aims. We study the possible detection of and properties of very high-energy (VHE) γ-ray emission (in...
The BL Lac object PKS 1440-389, located at a tentative redshift of z=0.065 (6dF Galaxy Survey, Jones...
We report the first detection of very high energy83Gamma-ray emission above 100 GeV. (VHE) gamma-ray...
We report the first detection of very high energy83Gamma-ray emission above 100 GeV. (VHE) gamma-ray...
We report the first detection of very-high-energy (VHE) gamma-ray emission above 140GeV from PKS 142...
Aims. We study the possible detection of and properties of very high-energy (VHE) γ-ray emission (in...
The active galactic nucleus PKS 0301-243 (z=0.266) is a high-synchrotron-peaked BL Lac object that i...
We report on the detection of very high energy (VHE; E > 100 GeV) γ-ray emission from the BL Lac obj...
ABSTRACT We report on the detection of very high energy (VHE; E > 100 GeV) γ-ray emis...
We report on the detection of very high energy (VHE; E > 100 GeV) γ-ray emission from the BL Lac obj...
Aims. We study the possible detection of and properties of very high-energy (VHE) γ-ray emission (in...
The BL Lac object PKS 1440-389, located at a tentative redshift of z=0.065 (6dF Galaxy Survey, Jones...
We report the first detection of very high energy83Gamma-ray emission above 100 GeV. (VHE) gamma-ray...
We report the first detection of very high energy83Gamma-ray emission above 100 GeV. (VHE) gamma-ray...
We report the first detection of very-high-energy (VHE) gamma-ray emission above 140GeV from PKS 142...
Aims. We study the possible detection of and properties of very high-energy (VHE) γ-ray emission (in...
The active galactic nucleus PKS 0301-243 (z=0.266) is a high-synchrotron-peaked BL Lac object that i...