WhiteNoise

class mesmer.WhiteNoise(weights=None, sens=None, pol=True)

Bases: object

Simple white noise model. See eqs (1) and (2) from arxiv: 9705188.

Methods Summary

get_pix_var_map(nside)	Function to return a map containing the variance in each pixel at each frequency.
map(nside[, seed])	Function to generate a realization of the noise level as a HEALPix map, with a given nside.
spectrum(lmax[, fwhm])

Methods Documentation

get_pix_var_map(nside)

Function to return a map containing the variance in each pixel at each frequency. This is a product consumed by the mesmer.likelihood.LogProb object, and is provided for convenient use with that.

Parameters

nside: int

Nside parameter of the HEALPix maps to be produced.

Returns

ndarray

Array containing the variance in each pixel at each frequency.

map(nside, seed=3232)

Function to generate a realization of the noise level as a HEALPix map, with a given nside.

Parameters

nside: int

Nside parameter of the HEALPix map to be produced.

seed: int (optional, default=3232)

RNG seed.

Returns

ndarray

Noise realization as a HEALPix map.

spectrum(lmax, fwhm=None)