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    Discovery of VHE gamma-rays from the high-frequency-peaked BL Lacertae object RGB J0152+017 

    Aharonian, F.; Büsching, I.; De Jager, O.C.; Holleran, M.; Raubenheimer, B.C.; Venter, C.; H.E.S.S. Collaboration (EDP Sciences, 2008)
    Aims. The BL Lac object RGB J0152+017 (z=0.080) was predicted to be a very high-energy (VHE; >100 GeV) $\gamma$-ray source, due to its high X-ray and radio fluxes. Our aim is to understand the radiative processes by ...
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    Simultaneous observations of PKS 2155-304 with HESS, FERMI, RXTE, and ATOM: spectral energy distributions and variability in a low state 

    Aharonian, F.; Büsching, I.; Davids, I.D.; De Jager, O.C.; Holleran, M.; Raubenheimer, B.C.; Venter, C.; H.E.S.S. Collaboration (IOP Publishing, 2009)
    We report on the first simultaneous observations that cover the optical, X-ray, and high-energy gamma-ray bands of the BL Lac object PKS 2155–304. The gamma-ray bands were observed for 11 days, between 2008 August 25 and ...
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    Simultaneous multiwavelength observations of the second exceptional y-ray flare of PKS 2155-304 in July 2006 

    Aharonian, F.; Büsching, I.; Davids, I.D.; De Jager, O.C.; Holleran, M.; Raubenheimer, B.C.; Venter, C.; H.E.S.S. Collaboration (EDP Sciences, 2009)
    Aims. The X-ray-TeV connection and the evolution of the emitting particle population is studied in high-energy peaked BL Lac objects, by obtaining spectral information in both bands on sub-hour timescales. Methods. ...
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    Upper limits from HESS active galactic nuclei observations in 2005-2007 

    Aharonian, F.; Büsching, I.; De Jager, O.C.; Holleran, M.; Raubenheimer, B.C.; Venter, C.; H.E.S.S. Collaboration (EDP Sciences, 2008)
    Aims.Very high energy (VHE; GeV) γ-ray studies were performed for 18 active galactic nuclei (AGN) from a variety of AGN classes. Methods.VHE observations of a sample of 14 AGN, considered candidate VHE emitters, were ...

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    AuthorAharonian, F. (4)Büsching, I. (4)De Jager, O.C. (4)H.E.S.S. Collaboration (4)Holleran, M. (4)Raubenheimer, B.C. (4)Venter, C. (4)Davids, I.D. (2)Subject
    Galaxies: active (4)
    Gamma rays: observations (4)
    BL Lacertae objects: individual (PKS 2155−304) (1)Galaxies: BL Lacertae objects: general (1)Galaxies: BL Lacertae objects: individual: PKS 2155-304 (1)Galaxies: BL Lacertae objects: individual: RGB J0152+017 (1)X-rays: galaxies (1)... View MoreDate Issued2008 (2)2009 (2)Has File(s)
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