Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-05-13
Int.J.Mod.Phys.D17:1889-1894,2008
Astronomy and Astrophysics
Astrophysics
4 pages, 2 figures, accepted to be published in the International Journal of Modern Physics D, proceedings of HEPRO meeting, h
Scientific paper
10.1142/S0218271808013534
Recent radio observations support a picture for star formation where there is accretion of matter onto a central protostar with the ejection of molecular outflows that can affect the surrounding medium. The impact of a supersonic outflow on the ambient gas can produce a strong shock that could accelerate particles up to relativistic energies. A strong evidence of this has been the detection of non-thermal radio emission coming from the jet termination region of some young massive stars. In the present contribution, we study the possible high-energy emission due to the interaction of relativistic particles, electrons and protons, with the magnetic, photon and matter fields inside a giant molecular cloud. Electrons lose energy via relativistic Bremsstrahlung, synchrotron radiation and inverse Compton interactions, and protons cool mainly through inelastic collisions with atoms in the cloud. We conclude that some massive young stellar objects might be detectable at gamma-rays by next generation instruments, both satellite-borne and ground based.
Araudo Anabella T.
Bosch-Ramon Valenti
Paredes Javier M.
Romero Gustavo E.
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