  Thermal radiation of photons and dileptons from hadronic matter plays an
essential role in understanding electromagnetic emission spectra in high-energy
heavy-ion collisions. In particular, baryons and anti-baryons have been found
to be strong catalysts for electromagnetic radiation, even at collider energies
where the baryon chemical potential is small. Here, we conduct a systematic
analysis of $\pi$- and $\omega$-meson-induced reactions off a large set of
baryon states. The interactions are based on effective hadronic Lagrangians
where the parameters are quantitatively constrained by empirical information
from vacuum decay branchings and scattering data, and gauge invariance is
maintained by suitable regularization procedures. The thermal emission rates
are computed using kinetic theory but can be directly compared to previous
calculations using hadronic many-body theory. The comparison to existing
calculations in the literature reveals our newly identified contributions to be
rather significant.
