bremsstrahlung_thin_target#

sunkit_spex.emission.bremsstrahlung_thin_target(photon_energies, p, eebrk, q, eelow, eehigh, efd=True, integrator=None)[source]#

Computes the thin-target bremsstrahlung x-ray/gamma-ray spectrum from an isotropic electron distribution function provided in broken_powerlaw. The units of the computed flux is photons per second per keV per square centimeter.

The electron flux distribution function is a double power law in electron energy with a low-energy cutoff and a high-energy cutoff.

Parameters:

photon_energies (numpy.array) – Array of photon energies to evaluate flux at
p (float) – Slope below the break energy
eebrk (float) – Break energy
q (float) – Slope above the break energy
eelow (float) – Low energy electron cut off
eehigh (float) – High energy electron cut off
efd (bool) – True (default) - input electron distribution is electron flux density distribution (unit electrons cm^-2 s^-1 keV^-1), False - input electron distribution is electron density distribution. (unit electrons cm^-3 keV^-1), This input is not used in the main routine, but is passed to brm2_dmlin and Brm2_Fthin
integrator (callable) – A Python function or method to integrate must support vector limits and match signture fun(x, a, b, n, *args, **kwargs)

Returns:

flux – Multiplying the output of Brm2_ThinTarget by a0 gives an array of photon fluxes in photons s^-1 keV^-1 cm^-2, corresponding to the photon energies in the input array eph. The detector is assumed to be 1 AU rom the source. The coefficient a0 is calculated as a0 = nth * V * nnth, where nth: plasma density; cm^-3) V: volume of source; cm^3) nnth: Integrated nonthermal electron flux density (cm^-2 s^-1), if efd = True, or Integrated electron number density (cm^-3), if efd = False

Return type:

numpy.array

Notes

If you want to plot the derivative of the flux, or the spectral index of the photon spectrum as a function of photon energy, you should set RERR to 1.d-6, because it is more sensitive to RERR than the flux.

Adapted from SSW Brm2_ThinTarget