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| Paper: |
Synthetic Maps of Synchrotron Emission in Massive Binary Systems from
MHD Numerical Simulations |
| Volume: |
464, Circumstellar Dynamics at High Resolution |
| Page: |
153 |
| Authors: |
Falceta-Gonçalves, D. |
| Abstract: |
Massive binary systems are known to be sources of thermal and non-thermal
radio emissions, as well as gamma-rays. Several objects, such as WR 146 and
WR 147, have been observed for years with spatial resolution revealing that
most of this emission has its origin in the wind-wind shock region. In the
past decade, theoretical works attempted to clarify the basic processes of the
origin of non-thermal emission in these objects, though very simplified,
usually hydrodynamic models that apply ad hoc assumptions of the evolution of
the magnetic field within the shocks. In this work we present the first full
MHD numerical simulations of the wind-wind shock region of a massive binary
system. We compute self-consistently the free-free and synchrotron
emissivities, as well as the radiative transfer along any line of sight. We
show that the synchrotron emission may be the dominant source of radio
emission in the range of 1–10 GHz for most of the systems known. |
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