Constraints on the non-thermal emission from η Carinae’s blast wave of 1843 J. L. Skilton, W. Domainko, J. A. Hinton, D. I. Jones, S. Ohm and J. S. Urquhart A&A, 539 (2012) A101 Published online: 29 February 2012 DOI: 10.1051/0004-6361/201118434