The Late-time X-ray Behavior of Short Gamma-ray Bursts: Implications for Energetics and Rates
Abstract
The distribution of jet angles for short gamma-ray bursts (SGRBs) is critical to constrain because it directly affects the true energy scale and event rate. The event rate is of particular interest in the gravitational wave era. Our current knowledge of the jet angle distribution comes almost exclusively from X-ray observations at >1 day after the burst. Here, we propose for Chandra TOO observations to monitor an SGRB afterglow and constrain its collimation, either from the detection of a jet break, or the non-detection of a break to place a lower limit of >5-25 deg. A precise calculation of the jet angle also requires broad-band afterglow observations, which will be leveraged to provide the tightest constraints on the jet angle.
- Publication:
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Chandra Proposal
- Pub Date:
- September 2022
- Bibcode:
- 2022cxo..prop.6302F
- Keywords:
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- Chandra Proposal ID #24400307