author={Felix Aharonian and A. G. Akhperjanian and Gisela Anton and Ulisses Barres de Almeida and A. R. Bazer-Bachi and Y Becherini and Bagmeet Behera and Wystan Benbow and Konrad Bernl{\"o}hr and Catherine Boisson and Anne Bochow and V. Borrel and E. Brion and J. Brucker and P. Brun and Rolf B{\"u}hler and Tomasz Bulik and I. B{\"u}sching and Timoth{\'e} Boutelier and Paula M Chadwick and Ald{\'e}e Charbonnier and Ryan C. G. Chaves and A. Cheesebrough and L. M. Chounet and A. C. Clapson and Nicolas Produit and Matthew Dalton and M. K. Daniel and I. D. Davids and Bernard Degrange and Christoph Deil and Hugh J. Dickinson and Arache Djannati-Ata{\"i} and Wilfried F. Domainko and Luke O'c. Drury and Franky Dubois and Guillaume Dubus and Jarosław Dyks and Michal Dyrda and Kathrin Egberts and D. Emmanoulopoulos and P. Espigat and Christian Farnier and Fabrice Feinstein and A. Fiasson and Andreas F{\"o}rster and G. Fontaine and Matthias F{\"u}{\ss}ling and Stefano Gabici and Yves A. Gallant and Lucie G{\'e}rard and Berrie Giebels and J. F. Glicenstein and B. Gl{\"u}ck and Philippe Goret and D. G{\"o}hring and Dominik Hauser and Marcus Hauser and S. Heinz and G. Heinzelmann and Gilles Henri and German Hermann and J. A. Hinton and A. Hoffmann and W. Hofmann and M. Holleran and Silke Hoppe and Dieter Horns and A. Jacholkowska and O. C. de Jager and Constanze Jahn and Ira Jung and Krzysztof Katarzyński and Uli Katz and Sarah Kaufmann and E. Kendziorra and Matthias Kerschhaggl and Dmitry Khangulyan and B. Kh{\'e}lifi and D. Keogh and W. Kluźniak and Tanja M. Kneiske and Nu. Komin and K. Kosack and Giovanni Lamanna and I. J. Latham and J.-P. Lenain and T. Lohse and V. Marandon and J. M. Martin and Olivier Martineau-Huynh and Alexandre Marcowith and David Maurin and T. J. L. Mccomb and Maria Clara Medina and Rafal Moderski and Emmanuel Moulin and Melitta Naumann-Godo and Mathieu de Naurois and Dalibor Nedbal and Daniil Nekrassov and Jacek Niemiec and S. J. Nolan and S. Ohm and J-F. Olive and Emma de O{\~n}a Wilhelmi and K. J. Orford and Michał Ostrowski and Mike Panter and Manuel Paz Arribas and Giovanna Pedaletti and Guy Pelletier and P. Petrucci and Santiago Pita and Gerd P{\"u}hlhofer and M. Punch and Andreas Quirrenbach and B. C. Raubenheimer and Martin Raue and Stephen Mark Rayner and M. Renaud and Frank M. Rieger and Joachim Ripken and L. Rob and S. Rosier-Lees and Gavin Rowell and B. Rudak and Cameron B Rulten and J. Ruppel and Vardan Sahakian and A. Santangelo and Reinhard Schlickeiser and F. M. Sch{\"o}ck and R. Schr{\"o}der and U. Schwanke and Stefan Schwarzburg and Stefanie Schwemmer and Andreas Shalchi and Marek Sikora and J. L. Skilton and H'elene Sol and D. Spangler and Łukasz Stawarz and Riaan Steenkamp and Christian M. Stegmann and Giulia Superina and Anna Z. Sz{\'o}stek and P. H. Thomas Tam and J-P. Tavernet and R. Terrier and Omar Tibolla and Martin Tluczykont and C. van Eldik and Georges Vasileiadis and Christo Venter and L. Venter and J. P. Vialle and P. Vincent and Jacco Vink and Matthieu Vivier and H. J. V{\"o}lk and Francesca Volpe and Stephen J. Wagner and M. Ward and A. A. Zdziarski and Andreas Zech},
  journal={The Astrophysical Journal},
  pages={L40 - L44}
We report the discovery of faint very high energy (VHE; E > 100 GeV) γ-ray emission from the radio galaxy Centaurus A in observations performed with the High Energy Stereoscopic System (H.E.S.S.) experiment, an imaging atmospheric Cherenkov telescope array consisting of four telescopes located in Namibia. Centaurus A has been observed for more than 120 hr. A signal with a statistical significance of 5.0σ is detected from the region including the radio core and the inner kpc jets. The integral… 

The γ-ray spectrum of the core of Centaurus A as observed with H.E.S.S. and Fermi-LAT

Centaurus A (Cen A) is the nearest radio galaxy discovered as a very-high-energy (VHE; 100 GeV–100 TeV) γ-ray source by the High Energy Stereoscopic System (H.E.S.S.). It is a faint VHE γ-ray

The search for very high energy γ-rays from misaligned AGN

The aim of this work is to study the potential for emission at very high energies (100 GeV) by misaligned active galactic nuclei (AGN) and the future prospects for observations of these objects with

Deep observation of the giant radio lobes of Centaurus A with the Fermi Large Area Telescope

The detection of high-energy (HE) γ-ray emission up to ∼ 3 GeV from the giant lobes of the radio galaxy Centaurus A has been recently reported by the Fermi-LAT Collaboration based on ten months of

High-Energy γ -Ray Emission from PKS 0625-35

We present the γ -ray observations of the radio galaxy PKS 0625-35, using the Fermi Large Area Telescope data accumulated during 2008-2017. γ -rays up to 100 GeV have been detected with a detection

Very high-energy γ-ray emission from IC 310

Context. We search for persistent extragalactic sources of γ-rays with energies above 100 GeV with the Fermi telescope. Aims. We construct a systematic survey of the extragalactic γ-ray sky at

Interpreting correlated observations of cosmic rays and gamma-rays from Centaurus A with a proton blazar inspired model

The nearest active radio galaxy Centaurus (Cen) A is a gamma-ray emitter in GeV to TeV energy scale. The High Energy Stereoscopic System (H.E.S.S.) and non-simultaneous Fermi-LAT observation indicate

Gamma-ray fluxes from the core emission of Centaurus A: a puzzle solved

A high-energy component in the radio galaxy Centaurus A was reported after analyzing four years of Fermi data. The spectrum of this component is described by means of a broken power law with a break

Very high-energy gamma-ray signature of ultrahigh-energy cosmic ray acceleration in Centaurus A

The association of at least a dozen ultrahigh-energy cosmic-ray (UHECR) events with energy $\gtrsim 55$ EeV detected by the Pierre Auger Observatory (PAO) from the direction of Centaurus-A, the


Centaurus A (Cen A) is the closest active galaxy (3.8 Mpc) and presents strong activity over a wide spectral range from radio to very-high energy gamma-rays. We propose a lepto-hadronic model for the


The spectral energy distribution of giant lobes shows one main peak detected by the Wilkinson Microwave Anisotropy Probe at the low energy of 10−5 eV and a faint γ-ray flux imaged by the Fermi Large



High energy radiation from Centaurus A

We calculate, for the nearest active galactic nucleus (AGN), Centaurus A (Cen A), the flux of high-energy cosmic rays (CR) and of accompanying secondary photons and neutrinos expected from hadronic


The intermediate-frequency peaked BL Lacertae (IBL) object 3C 66A is detected during 2007–2008 in VHE (very high energy; E > 100 GeV) γ rays with the VERITAS stereoscopic array of imaging atmospheric

Is the Giant Radio Galaxy M 87 a TeV Gamma-Ray Emitter?

For the first time an excess of photons above an energy threshold of 730 GeV from the giant radio galaxy M 87 has been measured at a significance level above 4 σ. The data have been taken during the

High-energy particle acceleration at the radio-lobe shock of Centaurus A

We present new results on the shock around the southwest radio lobe of Centaurus A using data from the Chandra Very Large Programme observations (740 ks total observing time). The X-ray spectrum of

Absorption of nuclear γ-rays on the starlight radiation in FR I sources: the case of Centaurus A

Several BL Lac objects are confirmed sources of variable and strongly Doppler-boosted TeV emission produced in the nuclear portions of their relativistic jets. It is more than probable that also many

High-energy Particle Acceleration and Production of Ultra-high-energy Cosmic Rays in the Giant Lobes of Centaurus A

The nearby radio galaxy Centaurus A is poorly studied at high frequencies with conventional radio telescopes because of its very large angular size, but is one of a very few extragalactic objects to

A synchrotron self-Compton scenario for the very high energy γ-ray emission of the radiogalaxy M 87. Unifying the TeV emission of blazars and other AGNs?

Context. M 87 is the first extragalactic source detected in the TeV range that is not a blazar. With the increasing performances of ground-based y Cerenkov telescopes, we can now probe the

The BL Lac heart of Centaurus A

Emission from the nucleus of the closest radio galaxy, Centaurus A, is observed from the radio to the gamma ray band. We build, for the first time, its overall Spectral Energy Distribution (SED) that

Chandra Observations of the X-Ray Jet in Centaurus A

We present high angular resolution X-ray images and spectra from two Chandra AXAF CCD Imaging Spectrometer (ACIS-I) observations of the X-ray jet in the nearby radio galaxy Cen A. We find that the