Gamma-Ray Bursts in Pulsar Wind Bubbles: Putting the Pieces Together

Details Gamma-Ray Bursts in Pulsar Wind Bubbles: Putting the Pieces Together Gamma-Ray Bursts in Pulsar Wind Bubbles: Putting the Pieces Together

2002-11-07

arxiv.org/abs/astro-ph/0211136v1

Astronomy and Astrophysics

Astrophysics

11 pages, 1 figure

Scientific paper

We present the main observational features expected for GRBs that occur inside pulsar wind bubbles (PWBs). This is the most natural outcome of supranova model where initially a supernova explosion takes place, leaving a supra-massive NS, which loses its rotational energy over a time t_sd and collapses to a BH, triggering a GRB explosion. We find that the time delay t_sd between the supernova and GRB events is the most important parameter that determines the behavior of the system. We consider the afterglow, prompt GRB and direct emission from the PWB. The observational signatures for different t_sd are described and joined together into one coherent framework. Constraints on the model are derived for a spherical PWB, from the lack of detection of the PWB emission and afterglow observations. For very low values of t_sd<1 hr the supranova model reduces to the collapsar model; 0.4

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