We analyze high-resolution Very Large Array and Jansky Very Large Array continuum observations of the M8 region carried out at several epochs that span a period of 30 yr. Our maps reveal two compact sources .
One is associated with Her 36 SE , a possible companion of the O7 luminous massive star Her 36 , and the other is associated to G5.97-1.17 , whose proplyd nature was previously established .
With the analyzed data , we do not find significant time variability in any of these sources .
The derived spectral index of \geq 0.1 for Her 36 SE , the marginal offset of the radio emission with the previous IR detection and the associated X-ray emission previously reported suggest the presence of an unresolved interaction region between the strong winds of Her 36 and Her 36 SE .
This region would produce non-thermal contamination to the global wind emission of Her 36 flattening its spectral index .
On the other hand , the emission of G5.97-1.17 can be also explained by a mixture of thermal and non-thermal emission components , with different relative contribution of both emission mechanisms along the proplyd .
We argue that the shock created by the photo-evaporation flow of the proplyd with the collimated stellar wind of Her 36 accelerates charged particles in G5.97-1.17 producing considerable synchrotron emission .
On the contrary , an electron density enhancement at the southwest of G5.97-1.17 makes the thermal emission dominant over this region .