50 likes | 184 Views
Connecting diffuse and point source fluxes. Connecting diffuse and point source fluxes. Number of observable point sources. Typical source luminosity. Limit on diffuse flux. Assumptions:. Flux sensitivity for point sources. Isotropically distributed sources
E N D
Connecting diffuse and point source fluxes Number of observable point sources Typical source luminosity Limit on diffuse flux Assumptions: Flux sensitivity for point sources • Isotropically distributed sources • Fixed luminosity for all sources • dN/dE ~ E-2 for all sources • Euclidian Universe, uniform source density • No evolution of source density and luminosity over Hubble time
Connecting diffuse and point source fluxes Number of observable point sources Typical source luminosity Limit on diffuse flux Flux sensitivity for point sources Amanda present Amanda Ns< 0.01- 0.1
Connecting diffuse and point source fluxes Number of observable point sources Typical source luminosity Limit on diffuse flux Flux sensitivity for point sources Amanda present IceCube Ns< 1- 10
All arguments suggest that 1 km³ has a fair – but not too large! – discovery chance for single sources. • Increase point source sensitivity • by an area >> 1 km² • by better pointing • by getting rid of part of atmospheric neutrinos • Not excluded that first a diffuse excess will be discovered