A. Szostek

Search for TeV Gamma-ray Emission from GRB 100621A, an extremely bright GRB in X-rays, with H.E.S.S.

A. Abramowski, F. Aharonian, F. Ait Benkhali, A. G. Akhperjanian et autres

The long gamma-ray burst (GRB) 100621A, at the time the brightest X-ray transient ever detected by Swift-XRT in the 0.3–10 keV range, has been observed with the H.E.S.S. imaging air Cherenkov telescope array, sensitive to gamma radiation in the very-high-energy (VHE, >100 …

de, ie, am, gb, pl, at, fr, Afrique du Sud, us, se, Namibie, au (code pays fourni par la source)

HESS J1818–154, a new composite supernova remnant discovered in TeV gamma rays and X-rays

A. Abramowski, F. Aharonian, F. Ait Benkhali, A. G. Akhperjanian et autres

Composite supernova remnants (SNRs) constitute a small subclass of the remnants of massive stellar explosions where non-thermal radiation is observed from both the expanding shell-like shock front and from a pulsar wind nebula (PWN) located inside of the SNR. These systems represent …

de, ie, am, gb, pl, se, at, fr, Afrique du Sud, us, Namibie, au (code pays fourni par la source)

Discovery of TeVγ-ray emission from PKS 0447-439 and derivation of an upper limit on its redshift

A. Abramowski, F. Acero, A. G. Akhperjanian, G. Anton et autres

Very 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 …

de, fr, am, gb, pl, Afrique du Sud, se, Namibie, au, ie, at (code pays fourni par la source)

SPECTRAL ANALYSIS AND INTERPRETATION OF THE γ-RAY EMISSION FROM THE STARBURST GALAXY NGC 253

A. Abramowski, F. Acero, F. Aharonian, A. G. Akhperjanian et autres

Very high energy (VHE; E100 GeV) and high-energy (HE; 100 MeV E 100 GeV) data from γ -ray observations performed with the H.E.S.S. telescope array and the Fermi-LAT instrument, respectively, are analyzed in order to investigate the non-thermal processes in the starburst …

de, fr, ie, am, pl, Afrique du Sud, gb, se, Namibie, at (code pays fourni par la source)

THE STRUCTURE AND EMISSION MODEL OF THE RELATIVISTIC JET IN THE QUASAR 3C 279 INFERRED FROM RADIO TO HIGH-ENERGY γ-RAY OBSERVATIONS IN 2008-2010

M. Hayashida, G. Madejski, Krzysztof Nalewajko, M. Sikora et autres

We present time-resolved broadband observations of the quasar 3C 279 obtained from multi-wavelength campaigns conducted during the first two years of the Fermi Gamma-ray Space Telescope mission. While investigating the previously reported γ-ray/optical flare accompanied by a change in optical polarization, we …

jp, us, pl, de, se, it, at, dk, au, es, ru, mx, fi, tw, ie, ge, cl, gb (code pays fourni par la source)

HESS observations of the Carina nebula and its enigmatic colliding wind binary Eta Carinae

A. Abramowski, F. Acero, F. Aharonian, A. G. Akhperjanian et autres

The massive binary system Eta Carinae and the surrounding H ii complex, the Carina nebula, are potential particle acceleration sites from which very high energy (VHE; E≥ 100 GeV) γ-ray emission could be expected. This paper presents data collected during VHE γ-ray …

de, fr, ie, am, pl, Afrique du Sud, gb, se, Namibie, at (code pays fourni par la source)

Localizing the VHE gamma-ray source at the Galactic Centre

F. Acero, F. Aharonian, A. G. Akhperjanian, G. Anton et autres

fr (code pays fourni par la source)

Probing the ATIC peak in the cosmic-ray electron spectrum with H.E.S.S.

F. Aharonian, A. G. Akhperjanian, G. Anton, U. Barres de Almeida et autres

The measurement of an excess in the cosmic-ray electron spectrum between 300 and 800 GeV by the ATIC experiment has – together with the PAMELA detection of a rise in the positron fraction up to ≈100 GeV – motivated many interpretations in …

ie, de, am, gb, fr, pl, Afrique du Sud, Namibie (code pays fourni par la source)

DISCOVERY OF VERY HIGH ENERGY γ-RAY EMISSION FROM CENTAURUS A WITH H.E.S.S.

F. Aharonian, A. G. Akhperjanian, G. Anton, U. Barres de Almeida et autres

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 …

ie, de, am, gb, fr, us, pl, Afrique du Sud, Namibie, cz (code pays fourni par la source)