  We develop a model-independent procedure to single out static and spherically
symmetric wormhole solutions based on the general relativistic
Poynting-Robertson effect and the extension of the ray-tracing formalism in
generic static and spherically symmetric wormhole metrics. Simulating the flux
emitted by the Poynting-Robertson critical hypersurface (i.e., a stable
structure where gravitational and radiation forces attain equilibrium) or also
from another X-ray source in these general geometrical environments toward a
distant observer, we are able to reconstruct, only locally to the emission
region, the wormhole solutions which are in agreement with the high-energy
astrophysical observational data. This machinery works only if wormhole
evidences have been detected. Indeed, in our previous paper we showed how the
Poynting-Robertson critical hypersurfaces can be located in regions of strong
gravitational field and become valuable astrophysical probe to observationally
search for wormholes' existence. As examples, we apply our method to selected
wormhole solutions in different extended theories of gravity by producing
lightcurves, spectra, and images of an accretion disk. In addition, the present
approach may constitute a procedure to also test the theories of gravity.
Finally, we discuss the obtained results and draw the conclusions.
