Stellar streams as gravitational experiments - II. Asymmetric tails of globular cluster streams G. F. Thomas, B. Famaey, R. Ibata, F. Renaud, N. F. Martin and P. Kroupa A&A, 609 (2018) A44 Published online: 05 January 2018 DOI: 10.1051/0004-6361/201731609