GRB 090926A and Bright Late-time Fermi LAT GRB Afterglows

C. A. Swenson, A. Maxham, P. W. A. Roming +10

GRB 090926A was detected by both the GBM and LAT instruments on-board the Fermi Gamma-Ray Space Telescope. Swift follow-up observations began ~13 hours after the initial trigger. T…