Synchrotron radiation and absence of linear polarization in the colliding wind binary WR 146 C. A. Hales, P. Benaglia, S. del Palacio, G. E. Romero and B. S. Koribalski A&A, 598 (2017) A42 Published online: 27 January 2017 DOI: 10.1051/0004-6361/201629644