Image Details
Caption: Figure 3.
XRT PC-mode 0.8–5.0 keV images from ObsIDs 01126853004 (top left), 01126853006 (top right), 01126853008/09 (bottom left), and 01126853010/11 (bottom right), illustrating the echo expansion with time. The echo event radial positions were scaled by t −0.5 to each observation midtime (given in the upper left corner of each image in days since GBM trigger) to counter the halo expansion within each observation.
© 2023. The Author(s). Published by the American Astronomical Society.