skymodel.simulate_nvss_ps

skymodel.simulate_nvss_ps(freq, nside_out=4096, beam_FWHM=None, unit='cmb')

Computes a map that contains all ~1,800,000 point sources from the NVSS PS catalog (Condon et al. 1998). The measured 1.4 GHz fluxes are extrapolated to the mm/sub-mm regime my assigning each source a random spectral index drawn from N(-0.5, 0.1). This function is not part of the default CCAT-p sky model and serves only for allow to reproduce the forecast results obtained with previous sky models

Parameters

freq: float or float array

Frequency of the output map in Hz. Must be a valid SO or CCAT-prime central band frequency, i.e. 27, 39, 93, 145, 225, 279, 220, 280, 350, 405, or 860 GHz.

nside_out: float, optional

Healpix nside parameter of the output map. Must be a valid value for nside. Default: 4096

beam_FWHM: bool, optional

If set, the output will be convolved with a gaussian. The FWHM of the Gaussian in units of arcmin is given by the provided value. Default: None

unit: bool, optional

Determines the units of the output map. The available units are ‘mjy’ –> MJy/sr (specific intensity), ‘cmb’ –> K_CMB (thermodynamic temperature), and ‘rj’ –> K_RJ (brightness temperature). Default: ‘cmb’.

Returns

ps_model: float array

Healpix all-sky map containing the NVSS point sources.