Signature of a spin-up magnetar from multi-band afterglow rebrightening of GRB 100814A

Y. B. Yu, Y. F. Huang, X. F. Wu +2

In recent years, more and more gamma-ray bursts with late rebrightenings in multi-band afterglows unveil the late-time activities of the central engines. GRB 100814A is a special o…