Abstract
We present numerical solutions of the two-dimensional relativistic hydrodynamics equations describing the deceleration and expansion of highly relativistic conical jets, of opening angles 0.05 t(s) = r(theta)/c the emission of radiation from the jet blast wave is similar to that of a spherical blast wave carrying the same energy (significant deviations at t similar to t(s) occur only for well off-axis observers, theta(obs) similar to 1 >> theta(0)). Thus, the total (calorimetric) energy of gamma-ray burst blast waves may be estimated with only a small fractional error based on t > t(s) observations.
Original language | English |
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Article number | L23 |
Number of pages | 6 |
Journal | Astrophysical Journal Letters |
Volume | 738 |
Issue number | 2 |
DOIs | |
State | Published - Sep 2011 |