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Blog Archives

July 1, 2010 by H.E.S.S. Collaboration

First detection of VHE gamma-rays from SN 1006 by H.E.S.S

July 1, 2010 by H.E.S.S. Collaboration

Multi-wavelength observations of H 2356-309

July 1, 2010 by H.E.S.S. Collaboration

PKS 2005-489 at VHE: Four Years of Monitoring with HESS and Simultaneous Multi-wavelength Observations

VHE observations of PKS 2005-489 were made with HESS from 2004 through 2007, together with three simultaneous multi-wavelength campaigns performed with XMM-Newton and RXTE in 2004 and 2005. A strong VHE signal, ~17sigma total,…

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July 1, 2010 by H.E.S.S. Collaboration

Localizing the VHE gamma-ray source at the Galactic Centre

The inner 10 pc of our galaxy contains many counterpart candidates of the very high energy (VHE; > 100 GeV) gamma-ray point source HESS J1745-290. Within the point spread function of the H.E.S.S. measurement,…

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July 1, 2009 by H.E.S.S. Collaboration

Constraints on the multi-TeV particle population in the Coma Galaxy Cluster with H.E.S.S. observations

The H.E.S.S. (High Energy Stereoscopic System) telescopes observed Coma for ~8hr in a search for gamma-ray emission at energies >1TeV. The large 3.5deg FWHM field of view of H.E.S.S. is ideal for viewing a…

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July 1, 2009 by H.E.S.S. Collaboration

Detection of very high energy radiation from HESS J1908+063 confirms the Milagro unidentified source MGRO J1908+06

Detection of a gamma-ray source above 300 GeV is reported, confirming the unidentified source MGRO J1908+06, discovered by the Milagro collaboration at a median energy of 20 TeV. The source was observed during 27…

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July 1, 2009 by H.E.S.S. Collaboration

H.E.S.S. upper limit on the very high energy gamma-ray emission from the globular cluster 47 Tucanae

Observations of the globular cluster 47 Tucanae (NGC 104), which contains at least 23 millisecond pulsars, were performed with the H.E.S.S. telescope system. The observations lead to an upper limit of F(E>800 GeV) <…

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July 1, 2009 by H.E.S.S. Collaboration

Discovery of very high energy gamma-ray emission from Centaurus A with H.E.S.S

We report the discovery of faint very high energy (VHE, E>100 GeV) gamma-ray emission from the radio galaxy Centaurus A in observations performed with the H.E.S.S. experiment, an imaging atmospheric Cherenkov telescope array consisting…

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July 1, 2009 by H.E.S.S. Collaboration

Simultaneous observations of PKS 2155-304 with H.E.S.S., Fermi, RXTE and ATOM: spectral energy distributions and variability in a low state

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 25…

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July 1, 2009 by H.E.S.S. Collaboration

H.E.S.S. observations of gamma-ray bursts in 2003-2007

Very-high-energy (VHE; >~100 GeV) gamma-rays are expected from gamma-ray bursts (GRBs) in some scenarios. Exploring this photon energy regime is necessary for understanding the energetics and properties of GRBs. GRBs have been one of…

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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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