Abstract
We present a sample of 27 gamma-ray bursts (GRBs) with detailed Swift light curves supplemented by late-time Chandra observations. To answer the missing jet-break problem in general, we develop a numerical-simulation-based model that can be directly fit to the data using Monte Carlo methods. Our numerical model takes into account all the factors that can shape a jet break: (i) lateral expansion, (ii) edge effects, and (iii) off-axis effects. Our results provide improved fits to the light curves and constraints on physical parameters. More importantly, our results suggest that off-axis effects are important and must be included in interpretations of GRB jet breaks.
Original language | English |
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Pages (from-to) | 15 |
Number of pages | 1 |
Journal | Astrophysical Journal |
Volume | 806 |
Issue number | 1 |
DOIs | |
Publication status | Published - 3 Jun 2015 |
Keywords
- gamma-ray burst: general, methods: numerical