Table 4: Spectral lag measurements for INTEGRAL GRBs. The columns refer to (from left to right): GRB; supergalactic longitude (SGL) and latitude (SGB); burst interval used in spectral lag determination relative to trigger time and as marked on time profiles in the Appendix; spectral lags measured between Channel 2 (50-100 keV) and Channel 1 (25-50 keV), $\tau _{2,1}$, Channels 2 and 3 combined (50-300 keV) and Channel 1 (25-50 keV), $\tau _{2+3,1}$ and Channel 3 (100-300 keV) and Channel 1 (25-50 keV), $\tau _{3,1}$.
GRB SGL SGB Lag interval Spectral lag
        $\tau _{2,1}$ (s) $\tau _{2+3,1}$ (s) $\tau _{3,1}$ (s)
GRB 021219 29.91 73.72 29.5-33 s $0.33\pm0.02$ $0.39\pm0.01$ $0.63\pm0.02$
GRB 030320 -174.44 46.17 -5-50 s $0.08\pm0.03$ $0.15\pm0.03$ $0.28\pm0.03$
      5-20 s $0.33\pm0.03$ $0.33\pm0.03$ $0.28\pm0.03$
      37-49 s $-0.05\pm0.03$ $0.05\pm0.03$ $0.28^{\rm +0.05}_{-0.03}$
GRB 030501 -137.97 80.21 0-30 s $-0.30\pm0.10$ $-0.25\pm0.10$ --
GRB 030529  $^\dagger$ 178.44 -38.74 -5-16 s $0.30\pm0.30$ $0.40^{\rm +0.20}_{-0.25}$ --
GRB 031203 178.37 -61.73 -5-20 s $-0.05^{\rm +0.04}_{-0.05}$ $0.04\pm0.03$ $0.17^{\rm +0.03}_{-0.04}$
GRB 040106 161.11 -22.05 -2-53 s $0.00^{\rm +0.10}_{-0.05}$ $0.05\pm0.05$ --
      -2-10 s $0.15^{\rm +0.05}_{-0.10}$ $0.05^{\rm +0.10}_{-0.05}$ --
      37-53 s $-0.35\pm0.10$ $-0.30\pm0.05$ --
GRB 0402231  $^\dagger$ 179.35 24.44 -15-15 s $1.05^{\rm +0.30}_{-0.35}$ $1.80^{\rm +0.35}_{-0.25}$ --
GRB 0403231 170.14 -3.73 0-20 s $0.80^{\rm +0.05}_{-0.10}$ $1.15^{\rm +0.15}_{-0.05}$ $1.80^{\rm +0.10}_{-0.20}$
GRB 0404031  $^\dagger$ 30.70 -5.66 -10-10 s $0.60\pm0.20$ $0.95^{\rm +0.25}_{-0.15}$ --
GRB 040422 -167.01 75.91 0-10 s $0.01\pm0.01$ $0.01\pm0.01$ --
      2.5-4 s $-0.01\pm0.01$ $-0.01\pm0.01$ --
      4-8 s $0.04\pm0.01$ $0.02^{\rm +0.02}_{-0.02}$ --
GRB 0406242  $^\dagger$ 120.23 0.26 -5-50 s -- $2.75\pm0.20$ --
GRB 0407303  $^\dagger$ -177.00 8.47 15-40 s $2.80\pm0.50$ $3.05^{\rm +0.40}_{-0.45}$ $3.30^{\rm +0.45}_{-0.35}$
GRB 040812 179.07 20.75 4-12 s $-0.05^{\rm +0.05}_{-0.10}$ $-0.15\pm0.10$ --
      4-7.7 s $0.00\pm0.05$ $0.00\pm^{\rm +0.10}_{-0.15}$ --
      7.7-12 s $-0.20^{\rm +0.15}_{-0.10}$ $-0.30^{\rm +0.15}_{-0.10}$ --
GRB 0408272  $^\dagger$ 144.61 27.49 5-30 s $3.15^{\rm +0.20}_{-0.30}$ $4.85^{\rm +0.15}_{-0.30}$ --
GRB 040903  $^\dagger$ -170.84 47.15 0-20 s $\tau_{1,15-25}=0.10^{\rm +0.25}_{-0.15}$
GRB 041218 7.76 11.40 20-63 s $0.05^{\rm +0.02}_{-0.01}$ $0.04^{\rm +0.01}_{-0.03}$ $-0.03^{\rm +0.04}_{-0.02}$
      20-29 s $0.24^{\rm +0.06}_{-0.04}$ $0.15^{\rm +0.05}_{-0.06}$ --
      31-40 s $-0.01^{\rm +0.02}_{-0.03}$ $-0.02\pm0.02$ $-0.01^{\rm +0.04}_{-0.02}$
      50-63 s $-0.02\pm0.03$ $-0.06^{\rm +0.04}_{-0.02}$ --
GRB 041219a -1.86 17.42 261-414 s $0.12\pm0.02$ $0.15\pm0.02$ $0.21\pm0.02$
      -1-7 s $0.50^{\rm +0.50}_{-0.08}$ $0.65^{\rm +0.05}_{-0.06}$ $1.00^{\rm +0.10}_{-0.09}$
      261-327 s $0.06\pm0.02$ $0.08\pm0.02$ $0.14\pm0.02$
      356-414 s $0.10\pm0.02$ $0.13\pm0.03$ $0.18\pm0.03$
GRB 050502a 75.87 16.88 -16.5- -3.5 s $-0.12^{\rm +0.05}_{-0.08}$ $-0.03\pm0.06$ $0.11^{\rm +0.07}_{-0.06}$
GRB 0505043 77.79 15.58 -5-60 s $1.35^{\rm +0.30}_{-0.20}$ $2.40^{\rm +0.35}_{-0.25}$ $4.35^{\rm +1.45}_{-0.70}$
GRB 050520 86.68 6.85 0-80 s $0.07\pm0.02$ $0.07\pm0.02$ --
GRB 050522  $^\dagger$ 93.81 12.17 0-20 s $\tau_{1,15-25}=0.70^{\rm +0.15}_{-0.25}$
      2.5-6 s $\tau_{1,15-25}=0.80^{\rm +0.75}_{-0.50}$
      7-16 s $\tau_{1,15-25}=0.70^{\rm +0.15}_{-0.20}$
GRB 050525a 51.74 78.15 0-12 s $0.056\pm0.001$ $0.069\pm0.001$ $0.130^{\rm +0.003}_{-0.002}$
      0-4 s $0.053\pm0.001$ $0.068\pm0.001$ $0.131^{\rm +0.003}_{-0.002}$
      4-12 s $0.066^{\rm +0.003}_{-0.002}$ $0.068\pm0.002$ $0.096^{\rm +0.003}_{-0.005}$
GRB 0506263  $^\dagger$ 178.46 -17.14 50-110 s $3.35^{\rm +0.45}_{-0.40}$ $3.25^{\rm +0.35}_{-0.45}$ --
GRB 050918 -174.74 45.97 0-325 s $0.17^{\rm +0.04}_{-0.03}$ $0.17^{\rm +0.03}_{-0.02}$ --
      0-50 s $0.43^{\rm +0.04}_{-0.05}$ $0.50^{\rm +0.05}_{-0.04}$ --
      220-350 s $-0.06\pm0.01$ $-0.14\pm0.01$ --
GRB 051211b2 -8.74 28.77 10-80 s $1.95\pm{0.35}$ $1.70^{\rm +0.30}_{-0.35}$ $1.55^{\rm +0.65}_{-0.35}$
GRB 0601303  $^\dagger$ 163.67 16.50 -10-45 s $4.05^{\rm +0.15}_{-0.30}$ $3.45^{\rm +0.35}_{-0.45}$ --
             
GRB 060901 -144.72 67.40 0-4 s $0.2\pm0.1$ $0.2\pm0.1$ $0.2\pm0.1$
GRB 061025 -140.43 24.19 -10-10 s $0.35^{\rm +0.10}_{-0.05}$ $0.40^{\rm +0.05}_{-0.10}$ $0.40\pm0.05$
GRB 0703091  $^\dagger$ -172.41 33.13 -25-10 s -- $1.70^{\rm +0.35}_{-0.30}$ --
GRB 070615  $^\dagger$ -59.34 -30.58 0-20 s $0.70^{\rm +0.25}_{-0.15}$ $0.40^{\rm +0.15}_{-0.20}$ --
GRB 070707  $^\ast$ -159.26 4.64 0.4-1.5 s $0.025\pm0.005$ $0.005\pm0.005$ $0.020\pm0.005$
1 Long-lag GRB in PCFoV to 50% coding. 2 Long-lag GRB in PCFoV outside 50% coding. 3 Long-lag GRB in FCFoV. $\dagger$ Lag measured using wavelet-smoothed lightcurves. $\ast$ Short-duration GRB.


Source LaTeX | All tables | In the text