https://github.com/sflender/sclyy

https://github.com/sflender/sclyy

Last synced: 4 months ago
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• Host: GitHub
• URL: https://github.com/sflender/sclyy
• Owner: sflender
• Created: 2017-03-10T20:39:12.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2017-03-10T20:48:26.000Z (over 8 years ago)
• Last Synced: 2025-01-21T12:33:52.921Z (10 months ago)
• Language: Python
• Size: 1.95 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README

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README

          
sclyy.cpp 

simple computation of Cl_yy 

by Samuel Flender

this code computes the 1-halo term of the y-y auto power spectrum:

Cl_yy = int dz dV/dz/dOmega int dM dn/dM (y_ell(M,z))^2

which is mathematically equivalent to 

Cl_yy = (1/(4*pi)) sum_ij DeltaN(M_i,z_j) y_ell(M_i,z_j)^2

where DeltaN is the binned halo count on the lightcone.

The DeltaN_i,j components are counted in the lightcone simulation which needs to be provided as input parameter.