Chandra observations of GW170817 ~581 days since merger. Hajela, A. ; Margutti, R. ; Fong, W. ; Alexander, K. D. ; Blanchard, P. ; Chornock, R. ; Coppejans, D. ; Gomez, S. ; Hosseinzadeh, G. ; Terreran, G. ; Villar, A. Abstract Publication: GRB Coordinates Network Pub Date: 2019 Bibcode: 2019GCN.23986....1H