darkhistory.low_energy.lowE_photons

Deposition of energy from low-energy photons

As detailed in section III.F.1 of the paper, low-energy photons (sub-3keV photons) may deposit their energy into the IGM through hydrogen/helium ionization, hydrogen excitation, and by contributing to continuum photons. By contributing to continuum photons, we mean that a certain component of low-energy photons (sub-10.2eV photons) have insufficient energy to effectively interact with the IGM, so they just free-stream and can be thought of as an additional component of the CMB continuum.

Functions

compute_fs(photspec, x, dE_dVdt_inj, dt[, ...])	Compute f(z) fractions for continuum photons, photoexcitation of HI, and photoionization of HI, HeI, HeII
get_kappa_2s(photspec)	Compute kappa_2s for use in kappa_DM function
getf_continuum(photspec, norm_fac[, cross_check])
getf_excitation(photspec, norm_fac, dt, xe, ...)
getf_ion(photspec, norm_fac, n, method[, ...])
kappa_DM(photspec, xe)	Compute kappa_DM of the modified tla.