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| Paper: |
Observational Properties of Short GRBs in the Merger Scenario |
| Volume: |
312, Third Rome Workshop on Gamma-Ray Bursts in the Afterglow Era |
| Page: |
393 |
| Authors: |
Perna, R. |
| Abstract: |
Data accumulated over the years have shown that the distribution of the GRB time duration is bimodal. While there is some evidence that long bursts are associated with star-forming regions, nothing is known regarding the class of short bursts. Their very short timescales are hard to explain with the collapse of a massive star, but would be naturally produced by the merger of two compact objects, such as two neutron starts (NS), or a neutron star and a black hole (BH). As for the case of long bursts, afterglow observations for short bursts should help reveal their origin. By using the updated population synthesis code Star-Track, we simulate a cosmological population of merging NS-NS and NS-BH, and compute the distribution of their galactic off-sets, the density distribution of their environment, and, if needed associated with GRBs, their expected afterglow characteristics. |
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