gamma astronomycattaneo/astroparticelle/lez7.pdf-10 km using cherenkov telescopes gamma- ray...

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