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Table 6
Emission parameters obtained for GRB 120711A for two cases with different radiation efficiencies, ηγ.
Parameter | Symbol | Approx. values | Approx. values | |
for ηγ = 0.2 | for ηγ = 0.5 | |||
|
||||
Electron spectral index | p | 2.1 | 2.1 | |
Redshift | z | 1.405 | 1.405 | |
Luminosity distance | d L | 3.18 × 1028 cm | 3.18 × 1028 cm | |
Deceleration time | t dec | T0 + 126 s | T0 + 126 s | |
Time of the jet | t jet | T0 + 8.5 Ms | T0 + 8.5 Ms | |
Peak energy | E peak | 1130 keV | 1130 keV | |
Rest-frame peak energy | E peak,z | 2260 keV | 2260 keV | |
Isotropic energy | E γ,iso | 1.65 × 1054 erg | 1.65 × 1054 erg | |
Isotropic kinetic energy | E k,iso | 6.6 × 1054 erg | 1.65 × 1054 erg | |
Wind density parameter | A ∗ | 0.11 | 1.6 | |
Electron energy fraction | ϵ e | 0.03 | 0.12 | |
Magnetic energy fraction | ϵ B | 2 × 10-3 | 4 × 10-5 | |
Mass-loss rate | Ṁ W | 10-6 M⊙ yr-1 | 10-5 M⊙ yr-1 | |
Initial bulk Lorentz factor | γ 0 | 340 | 124 | |
Jet half-opening angle | θ jet | 0.03 rad (2°) | 0.09 rad (5°) | |
Collimation factor | f b | 4 × 10-4 | 4 × 10-3 | |
Radiated energy | E γ | 7 × 1050 erg | 7 × 1051 erg | |
Kinetic energy | E k | 3 × 1051 erg | 7 × 1051 erg | |
Total energy | E total | 4 × 1051 erg | 1.4 × 1052 erg | |
Deceleration radius | R dec | 1016 cm | 1015 cm | |
Baryon load | M fb | 2 × 10-5 M⊙ | 1 × 10-4 M⊙ |
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