Jim Hinton MPI-R, Bonn 3.12.04 Galactic TeV Gamma Ray Sources Galactic TeV Gamma Ray Sources A Brief Overview of H.E.S.S. A Brief Overview of H.E.S.S. Observations Observations Gavin Rowell (MPIK Heidelberg) for the H.E.S.S. Collaboration Gavin Rowell (MPIK Heidelberg) for the H.E.S.S. Collaboration MPI Kernphysik, Heidelberg Humboldt Univ. Berlin Ruhr-Univ. Bochum Univ. Hamburg Landessternwarte Heidelberg Univ. Kiel Ecole Polytechnique, Palaiseau College de France, Paris Univ. Paris VI-VII Univ. Montpellier II CEA Saclay CESR Toulouse LAOG Grenoble Paris Observatory Durham Univ. Dublin Inst. for Adv. Studies Charles Univ., Prague Yerewan Physics Inst. Univ. Potchefstroom Univ. of Namibia, Windhoek The H.E.S.S. Collaboration:
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Jim Hinton MPI-R, Bonn 3.12.04 Galactic TeV Gamma Ray Sources A Brief Overview of H.E.S.S. Observations Gavin Rowell (MPIK Heidelberg) for the H.E.S.S.
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Jim Hinton
MPI-R,
Bonn
3.12.04
Galactic TeV Gamma Ray SourcesGalactic TeV Gamma Ray Sources
A Brief Overview of H.E.S.S. ObservationsA Brief Overview of H.E.S.S. Observations
Gavin Rowell (MPIK Heidelberg) for the H.E.S.S. Collaboration Gavin Rowell (MPIK Heidelberg) for the H.E.S.S. Collaboration
MPI Kernphysik, HeidelbergHumboldt Univ. BerlinRuhr-Univ. BochumUniv. HamburgLandessternwarte HeidelbergUniv. KielEcole Polytechnique, PalaiseauCollege de France, ParisUniv. Paris VI-VIIUniv. Montpellier II
CEA SaclayCESR ToulouseLAOG GrenobleParis ObservatoryDurham Univ.Dublin Inst. for Adv. StudiesCharles Univ., PragueYerewan Physics Inst.Univ. PotchefstroomUniv. of Namibia, Windhoek
--> Observations so far : roughly ½ Galactic, ½ Extragal
--> 2005: Much time for reobservation/confirmation of new
sources!
Jim Hinton
MPI-R,
Bonn
3.12.04
H.E.S.S. PerformanceH.E.S.S. Performance
HEGRA- 5% of Crab flux in 100 hrs
- 500 GeV Threshold
- Crab flux ~ 10 sigma/sqrt(hr)
H.E.S.S.- 5% Crab flux in 1 hour
- 0.5% Crab in 100 hours
- 100 GeV Threshold
- Angular res better than 0.1°
per event.
- Energy res <= 20%
- Crab flux ~60 sigma/sqrt(hr)
- Similar to ASCA in ang & energy flux sensitivity!
30 sec
1 night
1 year
H.E.S.S. 2004
Crab1989
Cas A2002
H.E.S.S EGRET
Jim Hinton
MPI-R,
Bonn
3.12.04
--> First TeV source with resolved morphology
SNR RX J1713-3946SNR RX J1713-3946
2004: 4-tels 33hrs data2003: 2-tels 18hrs data
42 sigma (2003+2004 data)
--> 2nd paper in preparation
PSFHESS Preliminary
Jim Hinton
MPI-R,
Bonn
3.12.04
RX J1713 – H.E.S.S & ASCARX J1713 – H.E.S.S & ASCA Gamma-ray and X-ray morphology quite similar
ASCA1 – 3 keVUchiyama 2002
HESS Preliminary
Jim Hinton
MPI-R,
Bonn
3.12.04
Preliminary
RX J1713 Spectrum: Whole SNR
Quite hard spectrum
- dN/dE ~ E-2.20+-0.02
- Total flux similar to Crab
- Spectrum extends to E ~ 30 TeV
(>6 sigma E>10 TeV)
--> High ZA obs in 2005 soon!
cf. CANGAROO
dN/dE ~ E -2.84+- 0.15
Jim Hinton
MPI-R,
Bonn
3.12.04
RX J1713: Variations in spectra?
No evidence for a
change in spectral
slope with current
statistics
Factors of 2 change
in brightness.
(similar to X-ray)
HESS Preliminary
Jim Hinton
MPI-R,
Bonn
3.12.04
RX J0852.0-4622 – 'Vela Junior'
2004
- 3hr observation
- 4 tels
- dN/dE E-2.2
- 12 sigma from entire SNR (rad < 1 deg)
~ 1 Crab flux
2005
--> further obs. ~15hr expected soon
--> high ZA obs!
ASCA0.7 – 10 keVSlane 2001
HESS Preliminary
Jim Hinton
MPI-R,
Bonn
3.12.04
Galactic Centre Galactic Centre
-17 hrs data - 2 telescopes - 11 sigma signal - Point source A&A 425, L13 (2004)
- 50 hrs data- 4 telescopes- Sgr A (HESS J1745-290) ~ 35 sigma- 5 sigma/sqrt(hour) - No long term (weekly/monthly) variability- Flux and Spectrum compatible with 2003 --> new paper in preparation
AND a new source seen in the same FoV!
2003
2004
Sgr A
New source!
Jim Hinton
MPI-R,
Bonn
3.12.04
Gal. Centre: at TeV EnergiesGal. Centre: at TeV Energies