Jim Hinton MPI-R, Bonn

3.12.04

Stefan Funk for H.E.S.S., XXXXth Rencontres de Moriond – 15th of march 2005, La Thuile

First results from the H.E.S.S. Galactic First results from the H.E.S.S. Galactic Plane SurveyPlane Survey

Stefan Funk (MPI-K Heidelberg) for the H.E.S.S. Stefan Funk (MPI-K Heidelberg) for the H.E.S.S. CollaborationCollaboration

Jim Hinton MPI-R, Bonn

3.12.04

Stefan Funk for H.E.S.S., XXXXth Rencontres de Moriond – 15th of march 2005, La Thuile

HHigh igh EEnergy nergy SStereoscopic tereoscopic SSystemystem

Array of 4 Imaging Cherenkov Telescopes

In Namibia, 1800 m a.s.l.

– Good optical site - dry, high and clear

– Location perfect for central part of our galaxy

System completed December 2003

Jim Hinton MPI-R, Bonn

3.12.04

Stefan Funk for H.E.S.S., XXXXth Rencontres de Moriond – 15th of march 2005, La Thuile

-ray astronomy-ray astronomy

The sky in high energy gamma-rays: EGRET

AGNSNR

PulsarsUnidentified sources

Diffuse emission from CR interactions

Jim Hinton MPI-R, Bonn

3.12.04

Stefan Funk for H.E.S.S., XXXXth Rencontres de Moriond – 15th of march 2005, La Thuile

The sky in very high energy gamma-rays: IACTs

AGN

SNR

Pulsars

Unidentified sources

(Diffuse emission from CR interactions)

VHEVHE-ray astronomy-ray astronomy Handful of known galactic sources from pointed observations

HEGRA survey (nothern sky) in VHE Gamma-rays– Found no sources– Average sensitivity: 15-30% Crab

Jim Hinton MPI-R, Bonn

3.12.04

Stefan Funk for H.E.S.S., XXXXth Rencontres de Moriond – 15th of march 2005, La Thuile

Technical detailsTechnical details

Conducted between May and July 2004 Galactic Longitude -30° to +30°, Latitude -1°, 0°, 1° 504 runs, 230 hours of data Reached average flux sensitivity below 3% of Crab Known VHE Gamma-ray sources in the Region:

– Galactic Centre and G0.9+0.1– SNR RXJ1713.7-3946

Galactic survey region

GC RXJ 1713

Jim Hinton MPI-R, Bonn

3.12.04

Stefan Funk for H.E.S.S., XXXXth Rencontres de Moriond – 15th of march 2005, La Thuile

CounterpartsCounterparts

Three plausible associations with pulsar wind nebulae, two with SNRs

Only two of the new sources are vaguely close to EGRET sources (different populations?)

At least two of the sources have no known counterpart in any other waveband

Need multiwavelength data to understand these new sources

Jim Hinton MPI-R, Bonn

3.12.04

Stefan Funk for H.E.S.S., XXXXth Rencontres de Moriond – 15th of march 2005, La Thuile

SummarySummary

First sensitive scan of inner part of Galactic plane 8 new sources, more to come Will extend the survey this year First results in upcoming Science paper