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Search for Gamma-rays from Dark Matter annihilations around Intermediate Mass Black Holes with the H.E.S.S. experiment
HESS Collaboration, F Aharonian, G. Bertone
The H.E.S.S. array of Cherenkov telescopes has performed, from 2004 to 2007, a survey of the inner Galactic plane at photon energies above 100 GeV. About 400 hours of data have bee…
Exploring a SNR/Molecular Cloud Association Within HESS J1745-303
HESS Collaboration, F. Aharonian
HESS J1745-303 is an extended, unidentified VHE (very high energy) gamma-ray source discovered using HESS in the Galactic Plane Survey. Since no obvious counterpart has previously…
Discovery of VHE gamma-rays from the high-frequency-peaked BL Lac object RGB J0152+017
HESS Collaboration, F. Aharonian
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 unde…
HESS VHE Gamma-Ray Sources Without Identified Counterparts
HESS Collaboration, F. Aharonian
The detection of gamma rays in the very-high-energy (VHE) energy range (100 GeV--100 TeV) provides a direct view of the parent population of ultra-relativistic particles found in a…
Upper Limits from HESS AGN Observations in 2005-2007
HESS Collaboration, F. Aharonian
AIMS: Very high energy (VHE; E>100 GeV) gamma-ray studies were performed for 18 active galactic nuclei (AGN) from a variety of AGN classes. METHODS: VHE observations of a sample of…
New constraints on the Mid-IR EBL from the HESS discovery of VHE gamma rays from 1ES 0229+200
HESS Collaboration, F. Aharonian
AIMS: To investigate the very high energy (VHE: >100 GeV) gamma-ray emission from the high-frequency peaked BL Lac 1ES 0229+200. METHODS: Observations of 1ES 0229+200 at energies a…
H.E.S.S. observations of galaxy clusters
W. Domainko, W. Benbow, J. A. Hinton +5
Clusters of galaxies, the largest gravitationally bound objects in the universe, are expected to contain a significant population of hadronic and leptonic cosmic rays. Potential so…
Discovery of a point-like very-high-energy gamma-ray source in Monoceros
F. Aharonian
The complex Monoceros Loop SNR/Rosette Nebula region contains several potential sources of very-high-energy (VHE) gamma-ray emission and two as yet unidentified high-energy EGRET s…
Detection of extended very-high-energy gamma-ray emission towards the young stellar cluster Westerlund 2
HESS Collaboration, F. Aharonian
Results from gamma-ray observations by the H.E.S.S. telescope array in the direction of the young stellar cluster Westerlund 2 are presented. Stereoscopic imaging of Cherenkov ligh…
First ground based measurement of atmospheric Cherenkov light from cosmic rays
HESS Collaboration, F. A. Aharonian
A recently proposed novel technique for the detection of cosmic rays with arrays of Imaging Atmospheric Cherenkov Telescopes is applied to data from the High Energy Stereoscopic Sy…
Discovery of Very High Energy Gamma-Ray Emission from the BL Lac Object H2356-309 with the H.E.S.S. Cherenkov Telescopes
Aharonian et al.
The extreme synchrotron BL Lac object H2356-309, located at a redshift of z = 0.165, was observed from June to December 2004 with a total exposure of approx. 40 h live-time with th…
Energy dependent gamma-ray morphology in the Pulsar wind nebula HESSJ1825-137
F. Aharonian
Detailed morphological and spatially resolved spectral studies reveal the very high-energy (VHE) gamma-ray aspects of this object with unprecedented precision. We confirm previous…
Observations of the Crab Nebula with H.E.S.S
The HESS Collaboration, F. Aharonian
The Crab nebula was observed with the H.E.S.S. stereoscopic Cherenkov-telescope array between October 2003 and January 2005 for a total of 22.9 hours (after data quality selection)…
First detection of a VHE gamma-ray spectral maximum from a Cosmic source: H.E.S.S. discovery of the Vela X nebula
Aharonian et al.
The Vela supernova remnant (SNR) is a complex region containing a number of sources of non-thermal radiation. The inner section of this SNR, within 2 degrees of the pulsar PSR B083…
Evidence for VHE Gamma-ray Emission from the Distant BL Lac PG 1553+113
Aharonian et al.
The high-frequency peaked BL Lac PG 1553+113 was observed in 2005 with the H.E.S.S. stereoscopic array of imaging atmospheric-Cherenkov telescopes in Namibia. Using the H.E.S.S. st…
Evidence for TeV Gamma-Ray Emission from the Galactic Plane
the Milagro Collaboration
Gamma-ray emission from a narrow band at the Galactic equator has previously been detected up to 30 GeV. We report evidence for a TeV gamma-ray signal from the Galactic plane by Mi…