GRB 130609B: Swift detection of a burst with an optical counterpart. Krimm, H. A. ; Barthelmy, S. D. ; Burrows, D. N. ; Kennea, J. A. ; Malesani, D. ; Markwardt, C. B. ; Marshall, F. E. ; Maselli, A. Abstract Publication: GRB Coordinates Network Pub Date: 2013 Bibcode: 2013GCN.14841....1K