XMM-Newton Science Analysis System


pointsrc (pointsrc-0.12.4) [22.0.0-9173c7d25-20250127]

Algorithm

Read in:
 Name of logN-logS function
  Choices: Hasinger, Mushotzky, Cappelluti, or Mateos
 Source flux cutoff
 Normalization of the Cosmic XRB
 Photon power law index of the Cosmic XRB

Return Xspec Normalization for power law
Call subroutine based on user selected function choice
 Returns: 
  Integral from 0-infinity
  Integral from 0-(source flux cutoff)
  numb/deg2
  0.5-2.0 keV flux/deg2
  Variance in flux
Calculate tot_flux, min_flux
Calculate conversion from energy in 0.5-2.0 keV to normalization
Calculate the energy in 0.5-2.0 in keV
Convert keV to erg
Convert erg/cm2/s/sr to keV/cm2/s/sr/keV
Calculate the bias: bias = cxrb_norm - tot_flux
Calculate the Xspec normalization:
  xnorm = bias + tot_flux
Convert to per arcmin:
  xnorm = xnorm/degree_per_ster/3600.

Output xnorm