Robuta

https://gcn.nasa.gov/circulars/6337 GCN - Circulars - 6337 - GRB 070420: Swift XRT refined analysis gcn circulars grb swift xrt https://test.gcn.nasa.gov/circulars/6342 GCN - Circulars - 6342 - GRB 070420 Swift-BAT Refined Analysis gcn circulars grb swift bat https://gcn.nasa.gov/circulars/6344 GCN - Circulars - 6344 - Konus-Wind observation of GRB 070420 gcn circulars konus wind observation