gamma astronomycattaneo/astroparticelle/lez7.pdf-10 km using cherenkov telescopes gamma- ray...
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GAMMA ASTRONOMY
Satellite detectors
TeV Cherenkov detectors
[Air Shower detectors]
Intimate Relation between :
Cosmic Ray Physics
High Energy Gamma Astronomy
Neutrino Astronomy
Cosmic Ray Source
e±
p
Populations ofrelativistic protons, Nucleielectrons/positrons
Emission of:
rays
Neutrinos
“Hadronic Emission”
“Leptonic Emission”
Compton Gamma Ray Observatory
1991
2000
CGRO
EGRET
EGRET all Sky Map
EGRET SOURCE CATALOGUE
TOTAL Sources 271
AGN 94Pulsars 5LMC 1Solar Flare 1
Non-identified 170
5 Gamma Ray Bursts In addition
GLAST
10 15 times more sensitive than EGRET
Launch end of 2006
AGILE detector (Italian Space Agency)
Scheduled launch: Fall 2005
Cherenkov (TeV: 1012 eV) Telescopes
WHIPPLE(Arizona USA) CANGAROO (Australia)
HESS (Namibia)
Mirror110 m2
Camera 5o Field of view
Camera960 Pixels of 0.16o
5o Field of view (1.4 m)Readout integrated in camera body
CHERENKOV IMAGINGTECHNIQUE
HESS
SN observation(26 hours 18 h selected)
MILAGRO detector
ARGO: TIBET
TeV (Cherenkov Sources) before HESS
(Red confirmed) 8 sources (6 AGN) (2 Pulsars)
HESSScienceMarch - 2005
“SCAN”of the
Galactic Plane
SourcesareExtended
Likely Identifications
PulsarsSN Remnants