Radio emission models of colliding-wind binary systems

• DOI: 10.1051/0004-6361:20031048
• Publication Date: 2003-09-12T10:43:08Z
• Authors: S. M. Dougherty; J. M. Pittard; L. Kasian; R. F. Coker; P. M. Williams; H. M. Lloyd
• Keywords: stars:Wolf-Rayet; stars:early-type; Astrophysics (astro-ph); stars: individual: WR 147; FOS: Physical sciences; stars: early-type; radio continuum:stars; Astrophysics; 01 natural sciences; 7. Clean energy; 13. Climate action; 0103 physical sciences; stars: binaries: general; stars: Wolf-Rayet; stars:binaries:general; radio continuum: stars; stars:individual:WR 147

We present preliminary calculations of the spatial distribution of the radio emission from a WR+OB colliding wind system, based on high-resolution hydrodynamical simulations and solutions to the radiative transfer equation. We account for both thermal and non-thermal radio emission, under the assumption of equipartition between magnetic and relativistic particle energy densities, and that the latter is a simple fraction of the thermal particle energy density. These calculations provide the foundation for modeling high resolution radio images and light curves of colliding-wind systems like WR 140, WR 146 and WR 147.