Robuta

https://gcn.nasa.gov/circulars/30576?query=210730A GCN - Circulars - 30576 - GRB 210731A: Swift-XRT refined Analysis gcn circulars grb swift xrt https://gcn.nasa.gov/circulars/30578?query=210730A GCN - Circulars - 30578 - GRB 210731A: MASTER optical afterglow detection gcn circulars grb master optical https://gcn.nasa.gov/circulars/30574 GCN - Circulars - 30574 - GRB 210731A: GROND observations gcn circulars grb grond observations https://gcn.nasa.gov/circulars/30572 GCN - Circulars - 30572 - GRB 210731A: Swift/UVOT Detection of an optical afterglow https://gcn.nasa.gov/circulars/30582 GCN - Circulars - 30582 - GRB 210731A: KAIT Optical Detection gcn circulars grb kait optical