Refined Chandra analysis of GRB 050509b. Patel, S. ; Kouveliotou, C. ; Burrows, D. N. ; Grupe, D. ; Gehrels, N. ; Meszaros, P. ; Zhang, B. ; Wijers, R. Abstract Publication: GRB Coordinates Network Pub Date: 2005 Bibcode: 2005GCN..3419....1P