synthesizer.kernel_functions

Functions

synthesizer.kernel_functions.cubic(r)

synthesizer.kernel_functions.gadget_2(r)

synthesizer.kernel_functions.quintic(r)

synthesizer.kernel_functions.sph_anarchy(r)

synthesizer.kernel_functions.uniform(r)

Classes

class synthesizer.kernel_functions.Kernel(name='sph_anarchy', binsize=10000)

Line of sight distance along a particle, l = 2*sqrt(h^2 + b^2), where h and b are the smoothing length and the impact parameter respectively. This needs to be weighted along with the kernel density function W(r), to calculate the los density. Integrated los density, D = 2 * integral(W(r)dz) from 0 to sqrt(h^2-b^2), where r = sqrt(z^2 + b^2), W(r) is in units of h^-3 and is a function of r and h. The parameters are normalized in terms of the smoothing length, helping us to create a look-up table for every impact parameter along the line-of-sight. Hence we substitute x = x/h and b = b/h.

This implies D = h^-2 * 2 * integral(W(r) dz) for x = 0 to sqrt(1.-b^2). The division by h^2 is to be done separately for each particle along the line-of-sight.

W_dz(z, b)

W(r)dz

create_kernel()

Saves the computed kernel for easy look-up as .npz file

get_kernel()

h^-2 * 2 * integral(W(r) dz) from x = 0 to sqrt(1.-b^2) for various values of b

Examples using synthesizer.kernel_functions.Kernel

Line of sight example

Line of sight example

Plot line of sight diagnostics

Plot line of sight diagnostics

Plot line of sight optical depth calculations

Plot line of sight optical depth calculations

Rotating particle distributions

Rotating particle distributions