CYlindrical GAmma-ray Monitor  


CYGAM CHARACTERISTICS ACCORDING TO RESULTS OF MONTE-CARLO SIMULATIOUS

a - the e - e + pair opening angle 

Effective area versus photon energy for normal incidence. Green and blue curves - CYGAM telescope (squares - no constraints on the angle a, triangles - a<0.50 ); red curve - EGRET telescope. 

Effective area versus photon incidence angle to relative the longitudinal telescope axis (squares - no constraints on the angle a, triangles - a<0.50, spectral index g=2). 

Angular resolution versus photon energy for normal incidence. Green and blue curves- CYGAM telescope (squares - no constraints on the angle a, triangles - a<0,50); red curve - EGRET telescope. 

Angular resolution for normal to the axis X incidence versus source power law spectrum index (squares- no constraints on the angle a, triangles- a<0,5 0). 

Angular resolution versus photon incidence angle relative to the longitudinal telescope axis (squares - no constraints on the angle a, triangles - a<0,5 0, spectral index g=2). 

Minimum detectable flux of a compact source 
versus the source power law spectrum index (
a<0,5 0, one year of observation). 

Source location capability for a year of observation for a source with the flux 10 8 cm-2 s 1 (Eg>1GeV) versus the source power law spectrum index. 

Relative accuracy of  spectral index estimation after a year of observation for a source  with the flux 10 8 cm -2 s 1 (Eg>1GeV)  versus the source power law 
spectrum index. 

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CYGAM (PDF, 450 Kb)

Space Research Institute,  2002- 2003

 

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Last updated on 10.06.03