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Blog Archives

July 1, 2008 by H.E.S.S. Collaboration

H.E.S.S. upper limits for Kepler’s supernova remnant

Observations of Kepler’s supernova remnant (G4.5+6.8) with the H.E.S.S. telescope array in 2004 and 2005 with a total live time of 13 h are presented. Stereoscopic imaging of Cherenkov radiation from extensive air showers…

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July 1, 2008 by H.E.S.S. Collaboration

Search for Gamma-rays from Dark Matter annihilations around Intermediate Mass Black Holes with the H.E.S.S. experiment

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 been accumulated in…

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July 1, 2008 by H.E.S.S. Collaboration

Discovery of a VHE gamma-ray source coincident with the supernova remnant CTB 37A

The supernova remnant (SNR) complex CTB 37 is an interesting candidate for observations with Very High Energy (VHE) gamma-ray telescopes such as H.E.S.S. In this region, three SNRs are seen. One of them is…

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July 1, 2008 by H.E.S.S. Collaboration

Chandra and H.E.S.S. observations of the Supernova Remnant CTB 37B

The >100 GeV gamma-ray source, HESS J1713-381, apparently associated with the shell-type supernova remnant (SNR) CTB 37B, was discovered using H.E.S.S. in 2006. X-ray follow-up observations with Chandra were performed in 2007 with the…

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July 1, 2008 by H.E.S.S. Collaboration

Discovery of very-high-energy gamma-ray emission from the vicinity of PSR J1913+1011 with H.E.S.S

The H.E.S.S. experiment, an array of four Imaging Atmospheric Cherenkov Telescopes with high sensitivity and large field-of-view, has been used to search for emitters of very-high-energy (VHE, >100 GeV) gamma-rays along the Galactic plane,…

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July 1, 2007 by H.E.S.S. Collaboration

An exceptional VHE gamma-ray flare of PKS 2155-304

The high-frequency peaked BL Lac PKS 2155-304 at redshift z=0.116 is a well-known VHE (>100 GeV) gamma-ray emitter. Since 2002 its VHE flux has been monitored using the H.E.S.S. stereoscopic array of imaging atmospheric-Cherenkov…

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July 1, 2007 by H.E.S.S. Collaboration

Discovery of two candidate pulsar wind nebulae in very-high-energy gamma rays

We present the discovery of two very-high-energy gamma-ray sources in an ongoing systematic search for emission above 100 GeV from pulsar wind nebulae in survey data from the H.E.S.S. telescope array. Imaging Atmospheric Cherenkov…

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July 1, 2007 by H.E.S.S. Collaboration

Detection of VHE gamma-ray emission from the distant blazar 1ES 1101-232 with H.E.S.S. and broadband characterisation

The blazar 1ES 1101-232 was observed with the High Energy Stereoscopic System (H.E.S.S.) of Atmospheric Cherenkov Telescopes (ACT) in 2004 and 2005, for a live time of 43 hours. VHE (E > 10^11 eV)…

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July 1, 2007 by H.E.S.S. Collaboration

Discovery of a point-like very-high-energy gamma-ray source in Monoceros

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 sources. Sensitive VHE observations are required to probe acceleration processes in…

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July 1, 2007 by H.E.S.S. Collaboration

Detection of extended very-high-energy gamma-ray emission towards the young stellar cluster Westerlund 2

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 light emission of gamma-ray induced showers in the atmosphere…

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Recent sources

The Vela Pulsar – the most Highly Energetic ClockNovember 1, 2023
HESS J1645−455 – A gem on the ring?October 1, 2023
The identity crisis of the blazar PKS 1510-089August 1, 2023
Cosmic Conspiracy Theories: Neutrinos and Gamma Rays from PKS 0735+178?July 1, 2023
Flares in the atmosphereJune 1, 2023

Fields

Atmosphere black holes Blazar Galactic Center galactic plane galactic source gamma-rays neutrinos pulsar

Contact

You can contact us for scientific queries and general informations using :
hess-ec@lsw.uni-heidelberg.de

Sources of the month

The Vela Pulsar – the most Highly Energetic ClockNovember 1, 2023
HESS J1645−455 – A gem on the ring?October 1, 2023
The identity crisis of the blazar PKS 1510-089August 1, 2023
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Last sources of the month

The Vela Pulsar – the most Highly Energetic ClockNovember 1, 2023
HESS J1645−455 – A gem on the ring?October 1, 2023
The identity crisis of the blazar PKS 1510-089August 1, 2023

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