GRB031220: 2nd Chandra observation and X-ray afterglow candidate. Gendre, B. ; de Pasquale, M. ; Piro, L. ; Costa, E. ; Feroci, M. ; Garcia, M. ; Antonelli, L. A. ; Garmire, G. ; Ricker, G. ; Tagliaferri, G. ; in't Zand, J. Abstract Publication: GRB Coordinates Network Pub Date: 2004 Bibcode: 2004GCN..2523....1G