first results from the h.e.s.s. galactic plane survey
DESCRIPTION
First results from the H.E.S.S. Galactic Plane Survey. Stefan Funk (MPI-K Heidelberg) for the H.E.S.S. Collaboration. H igh E nergy S tereoscopic S ystem. Array of 4 Imaging Cherenkov Telescopes In Namibia, 1800 m a.s.l. Good optical site - dry, high and clear - PowerPoint PPT PresentationTRANSCRIPT
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