Conveners
Afternoon session - Parallel A
- Jorge Horvath (IAG-USP)
Dr
Paul Lasky
(School of Physics, melbourne University)
26/03/2014, 15:55
The favoured progenitor model for short gamma-ray bursts (SGRBs) is the merger of two neutron stars that triggers an explosion with a burst of collimated gamma-rays. Following the initial prompt emission, some SGRBs exhibit a plateau phase in their X-ray light curves that indicates additional energy injection from a central engine, believed to be a rapidly rotating, highly magnetised neutron...
Dr
M. De Pasquale
(Mullard Space Science Laboratory - University College London)
26/03/2014, 16:15
We present observations of GRB 130831A obtained by Swift, Chandra, and multiple ground-based observatories. This burst shows a remarkable drop in the X-ray light curve at about 10^5 s after the trigger, with a decay slope of \alpha_X \simeq 5. Such behaviour cannot be explained in the standard Forward Shock (FS) model, whereas it can be explained if the high energy emission is powered by a...