This model was established in 2012 by Argentinean astrophysicists (PhD student María del Valle, under the supervision of Professor Gustavo Romero) while, a short time later, a catalogue of astronomical high-energy sources detected by the Fermi satellite was published, identifying a source of gamma rays whose position coincided with one of these runaway stars, HD195592. Michaël De Becker immediately brought this to the attention of Professor Gustavo Romero, with whom he has collaborated for several years, and this was the starting point of collaboration on this object. Based on the theoretical model developed by the Argentinian researchers and the combination of specific information from several observational studies, in particular, by Michaël De Becker, quantitative predictions have revealed that HD195592 could well be the origin of the gamma-ray emission detected by the Fermi satellite. Based on comparison between the only existing model with the particular case of HD195592, the emission of gamma rays as detected by Fermi can be explained by the existence of accelerated relativistic electrons from the shock between the stellar wind and the interstellar matter. Thus, HD195592 could well be the very first gamma-ray emitting massive runaway star to be known up to the present.

Interstellar chemistry

An extension of this research will perhaps one day be found in a discipline which is being developed today: astrochemistry. Galactic cosmic rays play a fundamental role in the chemical processes which occur in interstellar environments. The formation and destruction of molecules in interstellar clouds are common knowledge in fact: more than 170 molecules have been found in them, from very simple molecules like H₂ or CO to antifreeze, acetone, methanol, a simple sugar and direct precursors to glycine, the most simple of amino acids. The parcels of interstellar clouds with the highest particle densities can contain 1 million particles per cm³. On Earth, by comparison there are of the order 1019 at the sea level!  This may not seem very dense but it is sufficient for cosmic rays to interact significantly with this environment, dissociate molecules, ionize others, etc., and in environments that are sufficiently dense to prevent UV light from penetrating these environments and playing the same role. By bringing some energy to dark interstellar clouds and activating the kinetics of chemical reactions which are produced there, cosmic rays are therefore important components of interstellar chemistry.