A neutron star with a massive progenitor in Westerlund

Michael P. Muno^*, J. Simon Clark, Paul A. Crowther, Sean M. Dougherty, Richard De Grus, Casey Law, Stephen L W Mcmillan, Mark R. Morris, Ignacio Negueruela, David Pooley, Simon Portegies Zwart, Farhad Yusef-Zadeh

^*Corresponding author for this work